SK1927T [SEMTECH]

Low Skew Clock Driver, 9 True Output(s), 0 Inverted Output(s), PQFP32, 5 X 5 MM, TQFP-32;
SK1927T
型号: SK1927T
厂家: SEMTECH CORPORATION    SEMTECH CORPORATION
描述:

Low Skew Clock Driver, 9 True Output(s), 0 Inverted Output(s), PQFP32, 5 X 5 MM, TQFP-32

文件: 总30页 (文件大小:928K)
中文:  中文翻译
下载:  下载PDF数据表文档文件
SK19XX ꢀamily  
1:9 Signal Distribution  
PRELIMINARY  
HIGH-PERꢀORMANCE PRODUCTS  
SK19XX ꢀamily ꢀunctional Block Diagram  
OUT0  
OUT0*  
OUT1  
OUT1*  
OUT2  
OUT2*  
OUT3  
OUT3*  
D Q  
IN  
OUT4  
D* Q*  
0
1
IN*  
OUT4*  
OUT5  
OUT5*  
CLK  
CLK*  
OUT6  
OUT6*  
SEL*  
SEL  
OUT7  
OUT7*  
OUT8  
OUT8*  
Revision 1/January 23, 2001  
www.semtech.com  
1
SK19XX ꢀamily  
1:9 Signal Distribution  
PRELIMINARY  
HIGH-PERꢀORMANCE PRODUCTS  
SK19XX ꢀamily Product Selection Guide  
3
GHzSynch  
/
1:9 Signal Distribution  
Logic ꢀamily  
Output Configuration  
Power  
Supply  
Output  
Availability  
Internal  
50Source Current Sink  
50Ω  
Double  
Termination  
Open  
Emitter  
Product  
3.3V 5.2V  
Termination  
(Double  
Termination)  
SK1900  
SK1901  
SK1902  
SK1903  
SK1904  
l
l
l
l
l
l
l
l
ECL / PECL  
Double Swing / TTL  
ECL / PECL  
Now  
Now  
Now  
Now  
Now  
l
l
l
l
l
ECL / PECL  
l
ECL / PECL  
Logic / Translation ꢀamily  
Translation  
Output Configuration  
Availability  
50Ω  
Source  
Termination  
Open  
Emitter  
50Double  
Termination  
Product  
SK1925  
SK1926  
SK1927  
SK1928  
SK1929  
SK1930  
Anything to PECL  
Anything to ECL  
Anything to PECL  
Anything to ECL  
Anything to PECL  
Anything to ECL  
l
l
Now  
Now  
Now  
Now  
Now  
Now  
l
l
l
l
Open Collector Logic ꢀamily  
Output Configuration  
Output Current  
Availability  
Product  
Open Collector  
SK1999  
l
12mA  
Q2 2001  
Revision 1/January 3, 2001  
2
www.semtech.com  
SK19XX ꢀamily  
1:9 Signal Distribution  
PRELIMINARY  
HIGH-PERꢀORMANCE PRODUCTS  
SK19XX ꢀamily Package Information  
5mm x 5mm TQꢀP  
3
D, E  
2
4
D1, E1  
See  
Figure 3.  
b
8
Top View  
e
A
A2  
SEATING  
PLANE  
A1  
b
10  
Side View  
Revision 1/January 3, 2001  
3
www.semtech.com  
SK19XX ꢀamily  
1:9 Signal Distribution  
PRELIMINARY  
HIGH-PERꢀORMANCE PRODUCTS  
HIGH-PERꢀORMANCE PRODUCTS  
SK19XX ꢀamily Package Information (continued)  
5mm x 5mm TQꢀP  
WITH  
PLATING  
9
7
b
02  
e / 2  
2
R1  
01  
c 1  
c
R2  
S
GAGE PLANE  
03  
11  
00  
L
b
(L1)  
9
b1  
Figure 1.  
Figure 2.  
Figure 3.  
JEDEC Variation  
All Dimensions in Millimeters  
Symbol  
A
MIN  
1.00  
0.05  
0.95  
NOM  
1.10  
0.10  
1.00  
7.00 BSC  
5.00 BSC  
7.00 BSC  
5.00 BSC  
32  
MAX  
1.20  
0.15  
1.05  
Note Comments  
1. All dimensions and tolerancing conforms  
to ANSI Y14.5M-1982.  
2. The top package body size may be smaller  
than the bottom package body size by as  
much as 0.15 mm.  
Package Stand Off Height  
Air Gap  
A1  
A2  
D
Package Body Thickness  
3
3. To be determined at seating plane.  
4. Dimensions D1 and E1 do not include  
mold protrusion. Allowable protrusion  
is 0.25 mm per side. D1 and E1 are  
maximum plastic body size dimensions  
including mold mismatch.  
5. Details of Pin 1 identifier optional, but  
must be located within the zone indicated.  
6. All dimensions are in millimeters.  
7. Dimension b does not include Dambar  
protrusion. Allowable Dambar protrusion  
shall not cause the lead width to exceed  
the maximum b dimension by more than  
0.08 mm. Dambar cannot be located  
on the lower radius or the foot. Minimum  
space between protrusion and an  
adjacent lead is 0.07 mm for 0.4 mm and  
0.5 mm pitch packages.  
D1  
E
4, 2 Package Body Length  
3
E1  
N
4, 2 Package Body Width  
Lead Count  
e
0.50 BSC  
0.22  
0.20  
–
Lead Pitch  
b
0.17  
0.17  
0.08  
0.08  
0o  
0.27  
0.23  
–
7
LeadsThicknes  
b1  
R1  
R2  
00  
01  
02  
03  
S
–
0.20  
7o  
3.5o  
0o  
–
–
11o  
12o  
13o  
13o  
–
11o  
12o  
0.20  
0.09  
0.09  
0.45  
–
c
–
0.20  
0.16  
0.75  
c1  
L
–
8. Exact shape of each corner is optional.  
9. These dimensions apply to the flat  
section of the lead between 0.10 mm  
and 0.25 mm from the lead tip.  
10. A1 is defined as the distance from the  
seating plane to the lowest point of the  
package body.  
0.60  
1.00 REꢀ  
0.20  
0.20  
0.08  
0.08  
L1  
aaa  
bbb  
ccc  
ddd  
Revision 1/January 23, 2001  
www.semtech.com  
4
SK19XX ꢀamily  
1:9 Signal Distribution  
HIGH-PERꢀORMANCE PRODUCTS  
PRELIMINARY  
Absolute Maximum Ratings*  
Absolute Maximum Ratings*  
Symbol  
Parameter  
Value  
Unit  
V
V
Power Supply (V = 0V)  
CC  
-6.0 to 0  
V
EE  
Power Supply (V = 0V)  
EE  
6.0 to 0  
-6.0 to 0  
6.0 to 0  
V
V
V
CC  
V
Input Voltage (V = 0V, V not more negative than V )  
CC EE  
I
I
I
V
Input Voltage (V = 0V, V not more positive than V )  
CC  
E
I
Output Current  
Continuous  
Surge  
I
50  
mA  
mA  
OUT  
100  
o
T
Operating Temperature Range  
Storage Temperature  
0 to +70  
-65 to +150  
265  
C
A
o
T
C
stg  
sol  
o
o
T
Solder Temperature (<2 to 3 seconds: 245 C desired)  
C
* Maximum Ratings are those values beyond which damage to the device may occur.  
Revision 1/January 23, 2001  
5
www.semtech.com  
SK1900  
1:9 Signal Distribution  
PRELIMINARY  
HIGH-PERꢀORMANCE PRODUCTS  
Description  
ꢀeatures  
The SK1900 is an extremely fast, stable, and accurate  
low skew 1:9 clock / signal distributor featuring a  
synchronous enable, which allows the outputs to be  
turned off and on without the risk of an unpredictable  
output pulse. The D - flip-flop is triggered on the falling  
edge of the clock.  
1:9 Clock/Data Driver  
3 GHz Fmax  
3.3V / 5.2V Compatible  
Output Options  
Open Emitter  
The SK1900 uses standard open emitter ECL outputs  
optimized for:  
VCC  
• General purpose ECL compatible applications  
• Multiple destination applications (daisy  
chain).  
OUT  
OUT*  
ꢀunctional Block Diagram  
Output Swing  
VCC  
1.3V  
OUT0  
OUT0*  
700 mV  
OUT1  
OUT1*  
3.3V  
or  
5.2V  
OUT2  
OUT2*  
OUT3  
OUT3*  
VEE  
IN  
D
Q
OUT4  
D* Q*  
IN*  
OUT4*  
OUT5  
OUT5*  
CLK  
CLK*  
OUT6  
OUT6*  
SEL*  
SEL  
Pin Description  
OUT7  
OUT7*  
OUT8  
OUT8*  
VEE  
SEL  
SEL*  
CLK  
CLK*  
IN  
VCC  
OUT3*  
OUT3  
OUT4  
OUT4*  
OUT5*  
OUT5  
VEE  
Package Information  
IN*  
32 pin, 5 mm x 5 mm  
TQFP Package  
VCC  
Revision 1/January 23, 2001  
www.semtech.com  
6
SK1900  
1:9 Signal Distribution  
PRELIMINARY  
HIGH-PERꢀORMANCE PRODUCTS  
DC Characteristics  
Parameter  
Symbol  
Min  
Typ  
Max  
Units  
Inputs  
Input High  
Input Low  
VIH  
VIL  
VEE + 2.0  
VEE  
VCC  
VCC - .2  
V
V
(IN - IN*, CLK - CLK*, SEL - SEL*)  
Differential Input Voltage (Note 1)  
| Input - Input* |  
.2  
4.3  
V
Timing Inputs (CLK / CLK*)  
Input High Current  
Input Low Current  
IIH  
IIL  
+1  
-1  
+25  
+1  
µA  
µA  
ꢀunctional Inputs (IN / IN*, SEL / SEL*)  
Input Current  
IIH, IIL  
-420  
+250  
µA  
Outputs  
Digital Output Voltage  
Output Common Mode Range  
| OUT - OUT* |  
(OUT + OUT*) / 2  
600  
VCC - 1.5  
700  
VCC - 1.3  
mV  
V
VCC - 1.1  
Power Supply  
Power Supply Current  
Power Supply Voltage  
IEE  
VCC - VEE  
135  
170  
5.5  
mA  
V
3.0  
Test Conditions: Outputs terminated with 50to VCC – 2V.  
Note 1: Production tested to a maximum V = 2.0V.  
diff  
AC Characteristics  
Parameter  
Symbol  
Min  
Typ  
Max  
Units  
High Performance Option  
Propagation Delay  
CLK to OUT (SEL = 0)  
CLK to OUT (SEL = 1)  
SEL to OUT  
Tpd  
Tpd  
Tpd  
490  
340  
330  
590  
440  
430  
690  
540  
530  
ps  
ps  
ps  
Channel to Channel Skew  
<20  
ps  
GHz  
ps  
Maximum Operating ꢀrequency (Note 1)  
Minimum Pulse Width (Note 1)  
ꢀmax  
3.0  
PW min  
160  
IN to CLK (Note 1)  
Set Up Time  
Hold Time  
Tsu  
Th  
100  
100  
ps  
ps  
Output Rise and ꢀall Times (20% / 80%)  
Temperature Coefficient  
Tr / Tf  
125  
<1  
150  
ps  
o
ps / C  
Tpd / T  
AC Test Conditions: Outputs terminated with 50to VCC – 2V.  
Note 1: Guaranteed by characterization. Not production tested.  
Revision 1/January 23, 2001  
7
www.semtech.com  
SK1901  
1:9 Signal Distribution  
PRELIMINARY  
HIGH-PERꢀORMANCE PRODUCTS  
Description  
ꢀeatures  
The SK1901 is an extremely fast, stable, and accurate  
low skew 1:9 clock / signal distributor featuring a  
synchronous enable, which allows the outputs to be  
turned off and on without the risk of an unpredictable  
output pulse. The D - flip-flop is triggered on the falling  
edge of the clock.  
1:9 Clock/Data Driver  
2 GHz Fmax  
4.5V / 5.2V Compatible  
Output Options  
Open Emitter  
The SK1901 uses open emitter outputs with a double  
amplitude swing suitable for the following applications:  
• TTL compatible destinations  
VCC  
• Double termination situations that require  
a full swing at the destination  
• Long cables  
OUT  
OUT*  
ꢀunctional Block Diagram  
Output Swing  
VCC  
T
T *  
1.9V  
T
T1*  
1.4V  
4.5V  
or  
5.2V  
T
T2*  
T
T *  
IN  
T
T4*  
VEE  
*
*
*
T
T *  
LK  
LK*  
T
T *  
EL*  
E
T
T7*  
Pin Description  
T
T *  
VEE  
SEL  
SEL*  
CLK  
CLK*  
IN  
VCC  
OUT3*  
OUT3  
OUT4  
OUT4*  
OUT5*  
OUT5  
VEE  
Package Information  
IN*  
32 pin, 5 mm x 5 mm  
TQFP Package  
VCC  
Revision 1/January 23, 2001  
www.semtech.com  
8
SK1901  
1:9 Signal Distribution  
HIGH-PERꢀORMANCE PRODUCTS  
PRELIMINARY  
DC Characteristics  
Parameter  
Inputs  
Symbol  
Min  
Typ  
Max  
Units  
Input High  
Input Low  
VIH  
VIL  
VEE + 2.0  
VEE  
VCC  
VCC -.2  
V
V
(IN - IN*, CLK - CLK*, SEL -SEL*)  
Differential Input Voltage  
| Input -Input* |  
.2  
4.3  
V
Timing Inputs (CLK / CLK*)  
Input High Current  
Input Low Current  
IIH  
IIL  
+1  
-1  
+25  
+1  
µA  
µA  
ꢀunctional Inputs (IN / IN*, SEL / SEL*)  
Input Current  
IIH, IIL  
-420  
+250  
µA  
Outputs  
Digital Output Voltage  
Output Common Mode Range  
| OUT -OUT* |  
(OUT + OUT*) / 2  
1.2  
VCC -2.1  
1.4  
VCC - 1.9  
V
V
VCC - 1.7  
Power Supply  
Power Supply Current  
Power Supply Voltage  
IEE  
VCC -VEE  
135  
170  
5.5  
mA  
V
4.2  
Test Conditions: Outputs terminated with 50to VCC – 3V.  
AC Characteristics  
Parameter  
Symbol  
Min  
Typ  
Max  
Units  
High Performance Option  
Propagation Delay  
CLK to OUT (SEL = 0)  
CLK to OUT (SEL = 1)  
SEL to OUT  
Tpd  
Tpd  
Tpd  
490  
340  
330  
590  
440  
430  
690  
540  
530  
ps  
ps  
ps  
Channel to Channel Skew  
<20  
ps  
GHz  
ps  
Maximum Operating ꢀrequency (Note 1)  
Minimum Pulse Width (Note 1)  
ꢀmax  
2.0  
PW min  
250  
IN to CLK (Note 1)  
Set Up Time  
Hold Time  
Tsu  
Th  
100  
100  
ps  
ps  
Output Rise and ꢀall Times (20% / 80%)  
Temperature Coefficient  
Tr / Tf  
200  
<1  
250  
ps  
o
ps / C  
Tpd /T  
AC Test Conditions: Outputs terminated with 50to VCC – 3V.  
Note 1: Guaranteed by characterization. Not production tested.  
Revision 1/January 23, 2001  
9
www.semtech.com  
SK1902  
1:9 Signal Distribution  
PRELIMINARY  
HIGH-PERꢀORMANCE PRODUCTS  
Description  
ꢀeatures  
The SK1902 is an extremely fast, stable, and accurate  
low skew 1:9 clock / signal distributor featuring a  
synchronous enable, which allows the outputs to be  
turned off and on without the risk of an unpredictable  
output pulse. The D - flip-flop is triggered on the falling  
edge of the clock.  
1:9 Clock/Data Driver  
3 GHz Fmax  
3.3V / 5.2V Compatible  
Output Options  
50Source / Sink  
The SK1902 uses 50outputs with source /sink  
capability, and is optimized for applications that require:  
• Point to point, double terminated, timing  
critical lines  
VCC  
50Ω  
50Ω  
OUT  
OUT  
*
4 mA  
VEE  
4 mA  
VEE  
ꢀunctional Block Diagram  
Output Swing  
VCC  
1.3V  
T
T *  
350 mV  
T
T1*  
3.3V  
or  
5.2V  
At destination  
(double termination)  
T
T2*  
T
T *  
IN  
T
T4*  
*
*
*
VEE  
T
T *  
LK  
LK*  
T
T *  
EL*  
E
T
T7*  
Pin Description  
T
T *  
VEE  
SEL  
SEL*  
CLK  
CLK*  
IN  
VCC  
OUT3*  
OUT3  
OUT4  
OUT4*  
OUT5*  
OUT5  
VEE  
Package Information  
IN*  
32 pin, 5 mm x 5 mm  
TQFP Package  
VCC  
Revision 1/January 23, 2001  
www.semtech.com  
10  
SK1902  
1:9 Signal Distribution  
PRELIMINARY  
HIGH-PERꢀORMANCE PRODUCTS  
DC Characteristics  
Parameter  
Inputs  
Symbol  
Min  
Typ  
Max  
Units  
Input High  
Input Low  
VIH  
VIL  
VEE + 2.0  
VEE  
VCC  
VCC - .2  
V
V
(IN - IN*, CLK - CLK*, SEL - SEL*)  
Differential Input Voltage  
| Input - Input* |  
.2  
4.3  
V
Timing Inputs (CLK / CLK*)  
Input High Current  
Input Low Current  
IIH  
IIL  
+1  
-1  
+25  
+1  
µA  
µA  
ꢀunctional Inputs (IN / IN*, SEL / SEL*)  
Input Current  
IIH, IIL  
-420  
+250  
µA  
Outputs  
Digital Output Voltage  
Output Common Mode Range  
Internal Current Source  
Output Impedance  
| OUT - OUT* |  
(OUT + OUT*) / 2  
ISINK  
600  
VCC - 1.5  
TBD  
700  
VCC -1.3  
5
mV  
V
mA  
VCC - 1.1  
TBD  
ROUT  
40  
45  
50  
Power Supply  
Power Supply Current  
Power Supply Voltage  
IEE  
VCC - VEE  
210  
265  
5.5  
mA  
V
3.0  
Test Conditions: Outputs unterminated.  
AC Characteristics  
Parameter  
Symbol  
Min  
Typ  
Max  
Units  
High Performance Option  
Propagation Delay  
CLK to OUT (SEL = 0)  
CLK to OUT (SEL = 1)  
SEL to OUT  
Tpd  
Tpd  
Tpd  
490  
340  
330  
590  
440  
430  
690  
540  
530  
ps  
ps  
ps  
Channel to Channel Skew  
<20  
ps  
GHz  
ps  
Maximum Operating ꢀrequency (Note 1)  
Minimum Pulse Width (Note 1)  
ꢀmax  
3.0  
PW min  
160  
IN to CLK (Note 1)  
Set Up Time  
Hold Time  
Tsu  
Th  
100  
100  
ps  
ps  
Output Rise and ꢀall Times (20% / 80%)  
Temperature Coefficient  
Tr / Tf  
125  
<1  
150  
ps  
o
ps / C  
Tpd /T  
AC Test Conditions: Outputs are terminated with 50 to VCC - 2V.  
Note 1: Guaranteed by characterization. Not production tested.  
Revision 1/January 23, 2001  
11  
www.semtech.com  
SK1903  
1:9 Signal Distribution  
PRELIMINARY  
HIGH-PERꢀORMANCE PRODUCTS  
Description  
ꢀeatures  
The SK1903 is an extremely fast, stable, and accurate  
low skew 1:9 clock / signal distributor featuring a  
synchronous enable, which allows the outputs to be  
turned off and on without the risk of an unpredictable  
output pulse. The D - flip-flop is triggered on the falling  
edge of the clock.  
1:9 Clock/Data Driver  
3 GHz Fmax  
3.3V / 5.2V Compatible  
Output Options  
The SK1903 outputs are open emitter with an internal  
current source, optimized for applications that are:  
• Point to point, double terminated, timing  
critical lines  
Internal Current Sink  
VCC  
• Non-50transmission lines  
OUT  
OUT  
*
4 mA  
VEE  
4 mA  
ꢀunctional Block Diagram  
VEE  
Output Swing  
T
T *  
VCC  
1.3V  
T
T1*  
350 mV  
T
T2*  
3.3V  
or  
5.2V  
T
T *  
At destination  
(double termination)  
IN  
T
T4*  
*
*
*
T
T *  
VEE  
LK  
LK*  
T
T *  
EL*  
E
T
T7*  
T
T *  
Pin Description  
VEE  
SEL  
SEL*  
CLK  
CLK*  
IN  
VCC  
OUT3*  
OUT3  
OUT4  
OUT4*  
OUT5*  
OUT5  
VEE  
Package Information  
IN*  
32 pin, 5 mm x 5 mm  
TQFP Package  
VCC  
Revision 1/January 23, 2001  
www.semtech.com  
12  
SK1903  
1:9 Signal Distribution  
PRELIMINARY  
HIGH-PERꢀORMANCE PRODUCTS  
DC Characteristics  
Parameter  
Inputs  
Symbol  
Min  
Typ  
Max  
Units  
Input High  
Input Low  
VIH  
VIL  
VEE + 2.0  
VEE  
VCC  
VCC - .2  
V
V
(IN - IN*, CLK - CLK*, SEL - SEL*)  
Differential Input Voltage  
| Input - Input* |  
.2  
4.3  
V
Timing Inputs (CLK / CLK*)  
Input High Current  
Input Low Current  
IIH  
IIL  
+1  
-1  
+25  
+1  
µA  
µA  
ꢀunctional Inputs (IN / IN*, SEL / SEL*)  
Input Current  
IIH, IIL  
-420  
+250  
µA  
Outputs  
Digital Output Voltage  
Output Common Mode Range  
Internal Current Source  
| OUT - OUT* |  
(OUT + OUT*) / 2  
ISINK  
600  
VCC - 1.5  
TBD  
700  
VCC -1.3  
5
mV  
V
mA  
VCC - 1.1  
TBD  
Power Supply  
Power Supply Current  
Power Supply Voltage  
IEE  
VCC - VEE  
210  
265  
5.5  
mA  
V
3.0  
Test Conditions: Outputs Unterminated.  
AC Characteristics  
Parameter  
Symbol  
Min  
Typ  
Max  
Units  
High Performance Option  
Propagation Delay  
CLK to OUT (SEL = 0)  
CLK to OUT (SEL = 1)  
SEL to OUT  
Tpd  
Tpd  
Tpd  
490  
340  
330  
590  
440  
430  
690  
540  
530  
ps  
ps  
ps  
Channel to Channel Skew  
<20  
ps  
GHz  
ps  
Maximum Operating ꢀrequency (Note 1)  
Minimum Pulse Width (Note 1)  
ꢀmax  
3.0  
PW min  
160  
IN to CLK (Note 1)  
Set Up Time  
Hold Time  
Tsu  
Th  
100  
100  
ps  
ps  
Output Rise and ꢀall Times (20% / 80%)  
Temperature Coefficient  
Tr / Tf  
125  
<1  
150  
ps  
o
ps / C  
Tpd / T  
AC Test Conditions: Outputs are terminated with 50 to VCC - 2V.  
Note 1: Guaranteed by characterization. Not production tested.  
Revision 1/January 23, 2001  
13  
www.semtech.com  
SK1904  
1:9 Signal Distribution  
PRELIMINARY  
HIGH-PERꢀORMANCE PRODUCTS  
Description  
ꢀeatures  
The SK1904 is an extremely fast, stable, and accurate  
low skew 1:9 clock / signal distributor featuring a  
synchronous enable, which allows the outputs to be  
turned off and on without the risk of an unpredictable  
output pulse. The D - flip-flop is triggered on the falling  
edge of the clock.  
1:9 Clock/Data Driver  
3 GHz Fmax  
3.3V / 5.2V Compatible  
Output Options  
The SK1904 outputs are 50with source and sink  
capability, optimized for:  
50Source / Sink  
VGG  
• Point to point, series terminated, timing  
critical lines  
50Ω  
50Ω  
OUT  
OUT  
*
8 mA  
8 mA  
VEE  
VEE  
ꢀunctional Block Diagram  
Output Swing  
T
T *  
VCC  
1.3V  
T
T1*  
700 mV  
T
T2*  
3.3V  
or  
T
T *  
5.2V  
IN  
T
T4*  
*
*
*
T
T *  
VEE  
LK  
LK*  
T
T *  
EL*  
E
T
T7*  
T
T *  
Pin Description  
VEE  
SEL  
SEL*  
CLK  
CLK*  
IN  
VCC  
OUT3*  
OUT3  
OUT4  
OUT4*  
OUT5*  
OUT5  
VEE  
Package Information  
IN*  
32 pin, 5 mm x 5 mm  
TQFP Package  
VCC  
Revision 1/January 23, 2001  
www.semtech.com  
14  
SK1904  
1:9 Signal Distribution  
PRELIMINARY  
HIGH-PERꢀORMANCE PRODUCTS  
DC Characteristics  
Parameter  
Inputs  
Symbol  
Min  
Typ  
Max  
Units  
Input High  
Input Low  
VIH  
VIL  
VEE + 2.0  
VEE  
VCC  
VCC - .2  
V
V
(IN - IN*, CLK - CLK*, SEL - SEL*)  
Differential Input Voltage  
| Input - Input* |  
.2  
4.3  
V
Timing Inputs (CLK / CLK*)  
Input High Current  
Input Low Current  
IIH  
IIL  
+1  
-1  
+25  
+1  
µA  
µA  
ꢀunctional Inputs (IN / IN*, SEL / SEL*)  
Input Current  
IIH, IIL  
-420  
+250  
µA  
Outputs  
Digital Output Voltage  
Output Common Mode Range  
Internal Current Source  
Output Impedance  
| OUT - OUT* |  
(OUT + OUT*) / 2  
ISINK  
600  
VCC - 1.5  
6.5  
700  
VCC -1.3  
8
mV  
V
mA  
VCC - 1.1  
10  
ROUT  
40  
45  
50  
Power Supply  
Power Supply Current  
Power Supply Voltage  
IEE  
VCC - VEE  
280  
353  
5.5  
mA  
V
3.0  
Test Conditions: Outputs unterminated.  
AC Characteristics  
Parameter  
Symbol  
Min  
Typ  
Max  
Units  
High Performance Option  
Propagation Delay  
CLK to OUT (SEL = 0)  
CLK to OUT (SEL = 1)  
SEL to OUT  
Tpd  
Tpd  
Tpd  
490  
340  
330  
590  
440  
430  
690  
540  
530  
ps  
ps  
ps  
Channel to Channel Skew  
<20  
ps  
GHz  
ps  
Maximum Operating ꢀrequency (Note 1)  
Minimum Pulse Width (Note 1)  
ꢀmax  
3.0  
PW min  
160  
IN to CLK (Note 1)  
Set Up Time  
Hold Time  
Tsu  
Th  
100  
100  
ps  
ps  
Output Rise and ꢀall Times (20% / 80%)  
Temperature Coefficient  
Tr / Tf  
125  
<1  
150  
ps  
o
ps / C  
Tpd /T  
AC Test Conditions: Outputs are terminated with 50 to VCC - 2V.  
Note 1: Guaranteed by characterization. Not production tested.  
Revision 1/January 23, 2001  
15  
www.semtech.com  
SK1925  
Anything to PECL Translator  
PRELIMINARY  
HIGH-PERꢀORMANCE PRODUCTS  
Description  
ꢀeatures  
The SK1925 is an extremely fast, stable, and accurate  
low skew 1:9 clock / signal distributor featuring a  
synchronous enable, which allows the outputs to be  
turned off and on without the risk of an upredictable  
output pulse. It is also capable of receiving inputs of  
any technology or voltage level. The D - flip-flop is  
triggered on the falling edge of the clock.  
1:9 Clock/Data Driver  
3 GHz Fmax  
Anything to PECL Translation  
Output Options  
Open Emitter  
The SK1925 has open emitter PECL outputs.  
VCC  
Target applications:  
• High speed clock / data lines  
that require translation  
• Multiple destination (daisy chain)  
applications  
OUT  
OUT*  
Input Swing  
Output Swing  
ꢀunctional Block Diagram  
VCC  
VIH  
VIL  
VCC  
1.3V  
T
T *  
700 mV  
.
.
.
.
T
T1*  
T
T2*  
VIH  
VIL  
T
T *  
VEE  
VEE  
IN  
T
T4*  
*
*
*
T
T *  
LK  
LK*  
T
T *  
EL*  
E
Pin Description  
T
T7*  
T
T *  
VEE  
SEL  
SEL*  
CLK  
CLK*  
IN  
VCC  
OUT3*  
OUT3  
OUT4  
OUT4*  
OUT5*  
OUT5  
VEE  
Package Information  
IN*  
32 pin, 5 mm x 5 mm  
TQFP Package  
VCC  
Revision 1/January 23, 2001  
www.semtech.com  
16  
SK1925  
Anything to PECL Translator  
PRELIMINARY  
HIGH-PERꢀORMANCE PRODUCTS  
DC Characteristics  
Parameter  
Inputs  
Symbol  
Min  
Typ  
Max  
Units  
Input High  
Input Low  
VIH  
VIL  
VEE + 2.0  
VEE  
VCC  
VCC -.2  
V
V
(IN - IN*, CLK - CLK*, SEL -SEL*)  
Differential Input Voltage  
| Input - Input* |  
.2  
4.3  
V
Timing Inputs (CLK / CLK*)  
Input High Current  
Input Low Current  
IIH  
IIL  
+1  
-1  
+25  
+1  
µA  
µA  
ꢀunctional Inputs (IN / IN*, SEL / SEL*)  
Input Current  
IIH, IIL  
-420  
+250  
µA  
Outputs  
Digital Output Voltage  
Output Common Mode Range  
| OUT -OUT* |  
(OUT + OUT*) / 2  
600  
VCC -1.5  
700  
VCC -1.3  
mV  
V
VCC -1.1  
Power Supply  
Power Supply Current  
Positive Supply Voltage  
Negative Supply Voltage  
IEE  
VCC  
VEE  
135  
3.3  
-3.3  
170  
3.6  
-3.0  
mA  
V
V
3.0  
-3.6  
Test Conditions: Outputs terminated with 50to VCC – 2V.  
AC Characteristics  
Parameter  
Symbol  
Min  
Typ  
Max  
Units  
High Performance Option  
Propagation Delay  
CLK to OUT (SEL = 0)  
CLK to OUT (SEL = 1)  
SEL to OUT  
Tpd  
Tpd  
Tpd  
490  
340  
330  
590  
440  
430  
690  
540  
530  
ps  
ps  
ps  
Channel to Channel Skew  
<20  
ps  
GHz  
ps  
Maximum Operating ꢀrequency (Note 1)  
Minimum Pulse Width (Note 1)  
ꢀmax  
3.0  
PW min  
160  
IN to CLK (Note 1)  
Set Up Time  
Hold Time  
Tsu  
Th  
100  
100  
ps  
ps  
Output Rise and ꢀall Times (20% / 80%)  
Temperature Coefficient  
Tr / Tf  
125  
<1  
150  
ps  
o
ps / C  
Tpd /T  
AC Test Conditions: Outputs are terminated with 50 to VCC - 2V.  
Note 1: Guaranteed by characterization. Not production tested.  
Revision 1/January 23, 2001  
17  
www.semtech.com  
SK1926  
Anything to ECL Translator  
PRELIMINARY  
HIGH-PERꢀORMANCE PRODUCTS  
Description  
ꢀeatures  
The SK1926 is an extremely fast, stable and accurate  
low skew 1:9 clock / signal distributor featuring a  
synchronous enable, which allows the outputs to be  
turned off and on without the risk of an upredictable  
output pulse. It is also capable of receiving inputs of  
any technology or voltage level. The D - flip-flop is  
triggered on the falling edge of the clock.  
1:9 Clock/Data Driver  
3 GHz Fmax  
Anything to ECL Translation  
Output Options  
Open Emitter  
The SK1926 has standard open emitter ECL outputs.  
VGG  
Target applications:  
• High speed clock / data lines  
that require translation  
• Multiple destination (daisy chain)  
applications  
OUT  
OUT*  
Input Swing  
Output Swing  
ꢀunctional Block Diagram  
VCC  
VIH  
VIL  
T
T *  
.
.
.
.
T
T1*  
VGG  
VEE  
1.3V  
T
T2*  
700 mV  
VIH  
VIL  
T
T *  
VEE  
IN  
T
T4*  
*
*
*
T
T *  
LK  
LK*  
T
T *  
EL*  
E
Pin Description  
T
T7*  
T
T *  
VEE  
SEL  
SEL*  
CLK  
CLK*  
IN  
VGG  
Package Information  
OUT3*  
OUT3  
OUT4  
OUT4*  
OUT5*  
OUT5  
VEE  
32 pin, 5 mm x 5 mm  
TQFP Package  
IN*  
VCC  
Revision 1/January 23, 2001  
www.semtech.com  
18  
SK1926  
Anything to ECL Translator  
PRELIMINARY  
HIGH-PERꢀORMANCE PRODUCTS  
DC Characteristics  
Parameter  
Inputs  
Symbol  
Min  
Typ  
Max  
Units  
Input High  
Input Low  
VIH  
VIL  
VEE + 2.0  
VEE  
VCC  
VCC -.2  
V
V
(IN - IN*, CLK - CLK*, SEL - SEL*)  
Differential Input Voltage  
| Input - Input* |  
.2  
4.3  
V
Timing Inputs (CLK / CLK*)  
Input High Current  
Input Low Current  
IIH  
IIL  
+1  
-1  
+25  
+1  
µA  
µA  
ꢀunctional Inputs (IN / IN*, SEL / SEL*)  
Input Current  
IIH, IIL  
-420  
+250  
µA  
Outputs  
Digital Output Voltage  
Output Common Mode Range  
| OUT - OUT* |  
(OUT + OUT*) / 2  
600  
VGG -1.5  
700  
VGG - 1.3  
mV  
V
VGG -1.1  
Power Supply  
Power Supply Current  
Positive Supply Voltage  
Negative Supply Voltage  
IEE  
ICC  
VCC  
VGG  
VEE  
135  
45  
3.3  
0
170  
52  
3.6  
2.0  
-3.0  
3.6  
mA  
mA  
V
V
V
2.0  
-.1  
-3.6  
0
-3.3  
VCC - VGG  
V
Test Conditions: Outputs terminated with 50to VGG – 2V.  
AC Characteristics  
Parameter  
Symbol  
Min  
Typ  
Max  
Units  
High Performance Option  
Propagation Delay  
CLK to OUT (SEL = 0)  
CLK to OUT (SEL = 1)  
SEL to OUT  
Tpd  
Tpd  
Tpd  
490  
340  
330  
590  
440  
430  
690  
540  
530  
ps  
ps  
ps  
Channel to Channel Skew  
<20  
ps  
GHz  
ps  
Maximum Operating ꢀrequency (Note 1)  
Minimum Pulse Width (Note 1)  
ꢀmax  
3.0  
PW min  
160  
IN to CLK (Note 1)  
Set Up Time  
Hold Time  
Tsu  
Th  
100  
100  
ps  
ps  
Output Rise and ꢀall Times (20% / 80%)  
Temperature Coefficient  
Tr / Tf  
125  
<1  
150  
ps  
o
ps / C  
Tpd / T  
AC Test Conditions: Outputs are terminated with 50 to VGG - 2V.  
Note 1: Guaranteed by characterization. Not production tested.  
Revision 1/January 23, 2001  
19  
www.semtech.com  
SK1927  
Anything to PECL Translator  
PRELIMINARY  
HIGH-PERꢀORMANCE PRODUCTS  
Description  
ꢀeatures  
The SK1927 is an extremely fast, stable, and accurate  
low skew 1:9 clock / signal distributor featuring a  
synchronous enable, which allows the outputs to be  
turned off and on without the risk of an upredictable  
output pulse. It is also capable of receiving inputs of  
any technology or voltage level. The D - flip-flop is  
triggered on the falling edge of the clock.  
1:9 Clock/Data Driver  
3 GHz Fmax  
Anything to PECL Translation  
Output Options  
50Source / Sink  
The SK1927 uses 50outputs with source /sink  
capability, and is optimized for:  
• High speed clock / data lines  
that require translation  
VCC  
50Ω  
50Ω  
OUT  
OUT  
• Point to point, double termination  
applications  
*
4 mA  
VEE  
4 mA  
VEE  
Input Swing  
Output Swing  
ꢀunctional Block Diagram  
VCC  
VCC  
VIH  
VIL  
1.3V  
T
T *  
350 mV  
.
.
.
.
T
T1*  
At destination  
(double termination)  
T
T2*  
VIH  
VIL  
T
T *  
VEE  
VEE  
IN  
T
T4*  
*
*
*
T
T *  
LK  
LK*  
T
T *  
EL*  
E
Pin Description  
T
T7*  
T
T *  
VEE  
SEL  
SEL*  
CLK  
CLK*  
IN  
VCC  
OUT3*  
OUT3  
OUT4  
OUT4*  
OUT5*  
OUT5  
VEE  
Package Information  
IN*  
32 pin, 5 mm x 5 mm  
TQFP Package  
VCC  
Revision 1/January 23, 2001  
www.semtech.com  
20  
SK1927  
Anything to PECL Translator  
PRELIMINARY  
HIGH-PERꢀORMANCE PRODUCTS  
DC Characteristics  
Parameter  
Inputs  
Symbol  
Min  
Typ  
Max  
Units  
Input High  
Input Low  
VIH  
VIL  
VEE + 2.0  
VEE  
VCC  
VCC - .2  
V
V
(IN - IN*, CLK - CLK*, SEL - SEL*)  
Differential Input Voltage  
| Input - Input* |  
.2  
4.3  
V
Timing Inputs (CLK / CLK*)  
Input High Current  
Input Low Current  
IIH  
IIL  
+1  
-1  
+25  
+1  
µA  
µA  
ꢀunctional Inputs (IN / IN*, SEL / SEL*)  
Input Current  
IIH, IIL  
-420  
+250  
µA  
Outputs  
Digital Output Voltage  
Output Common Mode Range  
Internal Current Source  
Output Impedance  
| OUT - OUT* |  
(OUT + OUT*) / 2  
ISINK  
600  
VCC - 1.5  
TBD  
700  
VCC -1.3  
5
mV  
V
mA  
VCC - 1.1  
TBD  
ROUT  
40  
45  
50  
Power Supply  
Power Supply Current  
Positive Supply Voltage  
Negative Supply Voltage  
IEE  
VCC  
VEE  
210  
3.3  
-3.3  
265  
3.6  
-3.0  
mA  
V
V
3.0  
-3.6  
Test Conditions: Outputs unterminated.  
AC Characteristics  
Parameter  
Symbol  
Min  
Typ  
Max  
Units  
High Performance Option  
Propagation Delay  
CLK to OUT (SEL = 0)  
CLK to OUT (SEL = 1)  
SEL to OUT  
Tpd  
Tpd  
Tpd  
490  
340  
330  
590  
440  
430  
690  
540  
530  
ps  
ps  
ps  
Channel to Channel Skew  
<20  
ps  
GHz  
ps  
Maximum Operating ꢀrequency (Note 1)  
Minimum Pulse Width (Note 1)  
ꢀmax  
3.0  
PW min  
160  
IN to CLK (Note 1)  
Set Up Time  
Hold Time  
Tsu  
Th  
100  
100  
ps  
ps  
Output Rise and ꢀall Times (20% / 80%)  
Temperature Coefficient  
Tr / Tf  
125  
<1  
150  
ps  
ps / oC  
Tpd / T  
AC Test Conditions: Outputs are terminated with 50 to VCC - 2V.  
Note 1: Guaranteed by characterization. Not production tested.  
Revision 1/January 23, 2001  
21  
www.semtech.com  
SK1928  
Anything to ECL Translator  
PRELIMINARY  
HIGH-PERꢀORMANCE PRODUCTS  
Description  
ꢀeatures  
The SK1928 is an extremely fast, stable, and accurate  
low skew 1:9 clock / signal distributor featuring a  
synchronous enable, which allows the outputs to be  
turned off and on without the risk of an upredictable  
output pulse. It is also capable of receiving inputs of  
any technology and voltage level. The D - flip-flop is  
triggered on the falling edge of the clock.  
1:9 Clock/Data Driver  
3 GHz Fmax  
Anything to ECL Translation  
Output Options  
50Source / Sink  
The SK1928 has 50outputs with source /sink  
capability, and is optimized for:  
• High speed clock / data lines that  
require translation  
VGG  
50Ω  
50Ω  
OUT  
OUT  
• Point to point, double termination  
applications  
*
4 mA  
VEE  
4 mA  
VEE  
Output Swing  
ꢀunctional Block Diagram  
Input Swing  
VIH  
.
VCC = 3.3V  
.
.
At destination  
(double termination)  
T
T *  
T
T1*  
VGG  
VEE  
.
1.3V  
.
T
T2*  
VIH  
350 mV  
T
T *  
VIL  
VEE = –3.3V  
IN  
T
T4*  
*
*
*
T
T *  
LK  
LK*  
T
T *  
EL*  
E
Pin Description  
T
T7*  
T
T *  
VEE  
SEL  
SEL*  
CLK  
CLK*  
IN  
VGG  
Package Information  
OUT3*  
OUT3  
OUT4  
OUT4*  
OUT5*  
OUT5  
VEE  
32 pin, 5 mm x 5 mm  
TQFP Package  
IN*  
VCC  
Revision 1/January 23, 2001  
www.semtech.com  
22  
SK1928  
Anything to ECL Translator  
PRELIMINARY  
HIGH-PERꢀORMANCE PRODUCTS  
DC Characteristics  
Parameter  
Inputs  
Symbol  
Min  
Typ  
Max  
Units  
Input High  
Input Low  
VIH  
VIL  
VEE + 2.0  
VEE  
VCC  
VCC - .2  
V
V
(IN - IN*, CLK - CLK*, SEL - SEL*)  
Differential Input Voltage  
| Input - Input* |  
.2  
4.3  
V
Timing Inputs (CLK / CLK*)  
Input High Current  
Input Low Current  
IIH  
IIL  
+1  
-1  
+25  
+1  
µA  
µA  
ꢀunctional Inputs (IN / IN*, SEL / SEL*)  
Input Current  
IIH, IIL  
-420  
+250  
µA  
Outputs  
Digital Output Voltage  
Output Common Mode Range  
Internal Current Source  
Output Impedance  
| OUT - OUT* |  
(OUT + OUT*) / 2  
ISINK  
600  
VGG - 1.5  
TBD  
700  
VGG -1.3  
5
mV  
V
mA  
VGG - 1.1  
TBD  
50  
ROUT  
40  
45  
Power Supply  
Power Supply Current  
Positive Supply Voltage  
Negative Supply Voltage  
IEE  
ICC  
VCC  
VGG  
210  
45  
3.3  
0
265  
52  
3.6  
2.0  
-3.0  
3.6  
mA  
mA  
V
V
V
2.0  
-.1  
-3.6  
0
VEE  
VCC - VGG  
-3.3  
V
Test Conditions: Outputs unterminated.  
AC Characteristics  
Parameter  
Symbol  
Min  
Typ  
Max  
Units  
High Performance Option  
Propagation Delay  
CLK to OUT (SEL = 0)  
CLK to OUT (SEL = 1)  
SEL to OUT  
Tpd  
Tpd  
Tpd  
490  
340  
330  
590  
440  
430  
690  
540  
530  
ps  
ps  
ps  
Channel to Channel Skew  
<20  
ps  
GHz  
ps  
Maximum Operating ꢀrequency (Note 1)  
Minimum Pulse Width (Note 1)  
ꢀmax  
3.0  
PW min  
160  
IN to CLK (Note 1)  
Set Up Time  
Hold Time  
Tsu  
Th  
100  
100  
ps  
ps  
Output Rise and ꢀall Times (20% / 80%)  
Temperature Coefficient  
Tr / Tf  
125  
<1  
150  
ps  
o
ps / C  
Tpd / T  
Note 1: Guaranteed by characterization. Not production tested.  
Revision 1/January 23, 2001  
23  
www.semtech.com  
SK1929  
Anything to PECL Translator  
PRELIMINARY  
HIGH-PERꢀORMANCE PRODUCTS  
Description  
ꢀeatures  
The SK1929 is an extremely fast, stable, and accurate  
low skew 1:9 clock / signal distributor featuring a  
synchronous enable, which allows the outputs to be  
turned off and on without the risk of an upredictable  
output pulse. It is also capable of receiving inputs of  
any technology and voltage level. The D - flip-flop is  
triggered on the falling edge of the clock.  
1:9 Clock/Data Driver  
3 GHz Fmax  
Anything to PECL Translation  
Output Options  
50Source / Sink  
The SK1929 uses 50outputs with source /sink  
capability, and is optimized for:  
• High speed clock / data lines  
that require translation  
VCC  
50Ω  
50Ω  
OUT  
OUT  
• Point to point, series termination  
applications  
*
8 mA  
VEE  
8 mA  
VEE  
Input Swing  
Output Swing  
ꢀunctional Block Diagram  
VCC  
VIH  
VIL  
VCC  
1.3V  
T
T *  
700 mV  
.
.
.
.
3.3V  
or  
5.2V  
T
T1*  
T
T2*  
VIH  
VIL  
T
T *  
VEE  
VEE  
IN  
T
T4*  
*
*
*
T
T *  
LK  
LK*  
T
T *  
EL*  
E
Pin Description  
T
T7*  
T
T *  
VEE  
SEL  
SEL*  
CLK  
CLK*  
IN  
VCC  
OUT3*  
OUT3  
OUT4  
OUT4*  
OUT5*  
OUT5  
VEE  
Package Information  
IN*  
32 pin, 5 mm x 5 mm  
TQFP Package  
VCC  
Revision 1/January 23, 2001  
www.semtech.com  
24  
SK1929  
Anything to PECL Translator  
PRELIMINARY  
HIGH-PERꢀORMANCE PRODUCTS  
DC Characteristics  
Parameter  
Inputs  
Symbol  
Min  
Typ  
Max  
Units  
Input High  
Input Low  
VIH  
VIL  
VEE + 2.0  
VEE  
VCC  
VCC - .2  
V
V
(IN - IN*, CLK - CLK*, SEL - SEL*)  
Differential Input Voltage  
| Input - Input* |  
.2  
4.3  
V
Timing Inputs (CLK / CLK*)  
Input High Current  
Input Low Current  
IIH  
IIL  
+1  
-1  
+25  
+1  
µA  
µA  
ꢀunctional Inputs (IN / IN*, SEL / SEL*)  
Input Current  
IIH, IIL  
-420  
+250  
µA  
Outputs  
Digital Output Voltage  
Output Common Mode Range  
Internal Current Source  
Output Impedance  
| OUT - OUT* |  
(OUT + OUT*) / 2  
ISINK  
600  
VCC - 1.5  
6.5  
700  
VCC -1.3  
8
mV  
V
mA  
VCC - 1.1  
10  
ROUT  
40  
45  
50  
Power Supply  
Power Supply Current  
Positive Supply Voltage  
Negative Supply Voltage  
IEE  
VCC  
VEE  
175  
3.3  
-3.3  
221  
3.6  
-3.0  
mA  
V
V
3.0  
-3.6  
Test Conditions: Outputs unterminated.  
AC Characteristics  
Parameter  
Symbol  
Min  
Typ  
Max  
Units  
High Performance Option  
Propagation Delay  
CLK to OUT (SEL = 0)  
CLK to OUT (SEL = 1)  
SEL to OUT  
Tpd  
Tpd  
Tpd  
490  
340  
330  
590  
440  
430  
690  
540  
530  
ps  
ps  
ps  
Channel to Channel Skew  
<20  
ps  
GHz  
ps  
Maximum Operating ꢀrequency (Note 1)  
Minimum Pulse Width (Note 1)  
ꢀmax  
3.0  
PW min  
160  
IN to CLK (Note 1)  
Set Up Time  
Hold Time  
Tsu  
Th  
100  
100  
ps  
ps  
Output Rise and ꢀall Times (20% / 80%)  
Temperature Coefficient  
Tr / Tf  
125  
<1  
150  
ps  
o
ps / C  
Tpd / T  
Note 1: Guaranteed by characterization. Not production tested.  
Revision 1/January 23, 2001  
25  
www.semtech.com  
SK1930  
Anything to ECL Translator  
PRELIMINARY  
HIGH-PERꢀORMANCE PRODUCTS  
Description  
ꢀeatures  
The SK1930 is an extremely fast, stable and accurate  
low skew 1:9 clock / signal distributor featuring a  
synchronous enable, which allows the outputs to be  
turned off and on without the risk of an upredictable  
output pulse. It is also capable of receiving inputs of  
any technology or voltage level. The D - flip-flop is  
triggered on the falling edge of the clock.  
1:9 Clock / Data Driver  
3 GHz Fmax  
Anything to ECL Translation  
Output Options  
50Source / Sink  
The SK1930 uses 50outputs with source /sink  
capability, and is optimized for:  
• High speed clock / data lines that  
require translation  
VGG  
50Ω  
50Ω  
OUT  
OUT  
*
• Point to point, series termination  
applications  
8 mA  
VEE  
8 mA  
VEE  
Output Swing  
ꢀunctional Block Diagram  
Input Swing  
VCC  
VIH  
VIL  
T
T *  
.
.
.
.
T
T1*  
VGG  
VEE  
1.3V  
T
T2*  
700 mV  
VIH  
VIL  
T
T *  
VEE  
IN  
T
T4*  
*
*
*
T
T *  
LK  
LK*  
T
T *  
EL*  
E
Pin Description  
T
T7*  
T
T *  
VEE  
SEL  
SEL*  
CLK  
CLK*  
IN  
VGG  
Package Information  
OUT3*  
OUT3  
OUT4  
OUT4*  
OUT5*  
OUT5  
VEE  
32 pin, 5 mm x 5 mm  
TQFP Package  
IN*  
VCC  
Revision 1/January 23, 2001  
www.semtech.com  
26  
SK1930  
Anything to ECL Translator  
PRELIMINARY  
HIGH-PERꢀORMANCE PRODUCTS  
DC Characteristics  
Parameter  
Inputs  
Symbol  
Min  
Typ  
Max  
Units  
Input High  
Input Low  
VIH  
VIL  
VEE + 2.0  
VEE  
VCC  
VCC - .2  
V
V
(IN - IN*, CLK - CLK*, SEL - SEL*)  
Differential Input Voltage  
| Input - Input* |  
.2  
4.3  
V
Timing Inputs (CLK / CLK*)  
Input High Current  
Input Low Current  
IIH  
IIL  
+1  
-1  
+25  
+1  
µA  
µA  
ꢀunctional Inputs (IN / IN*, SEL / SEL*)  
Input Current  
IIH, IIL  
-420  
+250  
µA  
Outputs  
Digital Output Voltage  
Output Common Mode Range  
Internal Current Source  
Output Impedance  
| OUT - OUT* |  
(OUT + OUT*) / 2  
ISINK  
600  
VGG - 1.5  
6.5  
700  
VGG -1.3  
8
mV  
V
mA  
VGG - 1.1  
10  
50  
ROUT  
40  
45  
Power Supply  
Power Supply Current  
Positive Supply Voltage  
Negative Supply Voltage  
IEE  
ICC  
VCC  
VGG  
175  
45  
3.3  
0
221  
52  
3.6  
2.0  
-3.0  
3.6  
mA  
mA  
V
V
V
2.0  
-.1  
-3.6  
0
VEE  
VCC - VGG  
-3.3  
V
Test Conditions: Outputs unterminated.  
AC Characteristics  
Parameter  
Symbol  
Min  
Typ  
Max  
Units  
High Performance Option  
Propagation Delay  
CLK to OUT (SEL = 0)  
CLK to OUT (SEL = 1)  
SEL to OUT  
Tpd  
Tpd  
Tpd  
490  
340  
330  
590  
440  
430  
690  
540  
530  
ps  
ps  
ps  
Channel to Channel Skew  
<20  
ps  
GHz  
ps  
Maximum Operating ꢀrequency (Note 1)  
Minimum Pulse Width (Note 1)  
ꢀmax  
3.0  
PW min  
160  
IN to CLK (Note 1)  
Set Up Time  
Hold Time  
Tsu  
Th  
100  
100  
ps  
ps  
Output Rise and ꢀall Times (20% / 80%)  
Temperature Coefficient  
Tr / Tf  
125  
<1  
150  
ps  
o
ps / C  
Tpd / T  
Note 1: Guaranteed by characterization. Not production tested.  
Revision 1/January 23, 2001  
27  
www.semtech.com  
SK1999  
1:9 Signal Distribution  
PRELIMINARY  
HIGH-PERꢀORMANCE PRODUCTS  
Description  
ꢀeatures  
The SK1999 is an extremely fast, stable, and accurate  
low skew 1:9 clock / signal distributor featuring a  
synchronous enable, which allows the outputs to be  
turned off and on without the risk of an unpredictable  
output pulse. The D - flip-flop is triggered on the falling  
edge of the clock.  
1:9 Clock/Data Driver  
3 GHz Fmax  
3.3V / 5.2V Compatible  
The SK1999 has open collector (CML) outputs, targeted  
for:  
Output Options  
Open Collector  
• Ultra high speed applications  
• Adjustable common mode levels at the  
destination.  
OUT  
OUT*  
ꢀunctional Block Diagram  
12 mA  
VEE  
T
T *  
T
T1*  
T
T2*  
T
T *  
IN  
T
T4*  
*
*
*
T
T *  
LK  
LK*  
T
T *  
EL*  
E
T
T7*  
T
T *  
Pin Description  
VEE  
SEL  
SEL*  
CLK  
CLK*  
IN  
VCC  
OUT3*  
OUT3  
OUT4  
OUT4*  
OUT5*  
OUT5  
VEE  
Package Information  
IN*  
32 pin, 5 mm x 5 mm  
TQꢀP Package  
VCC  
Revision 1/January 23, 2001  
www.semtech.com  
28  
SK1999  
1:9 Signal Distribution  
PRELIMINARY  
HIGH-PERꢀORMANCE PRODUCTS  
DC Characteristics  
Parameter  
Symbol  
Min  
Typ  
Max  
Units  
Inputs  
Input High  
Input Low  
VIH  
VIL  
VEE + 2.0  
VEE  
VCC  
VCC -.2  
V
V
(IN - IN*, CLK - CLK*, SEL - SEL*)  
Differential Input Voltage  
| Input - Input* |  
.2  
4.3  
V
Timing Inputs (CLK / CLK*)  
Input High Current  
Input Low Current  
IIH  
IIL  
+1  
-1  
+25  
+1  
µA  
µA  
ꢀunctional Inputs (IN / IN*, SEL / SEL*)  
Input Current  
IIH, IIL  
-420  
+250  
µA  
Outputs  
Output Current High  
Output Current Low  
IOH  
IOL  
TBD  
TBD  
0
12  
TBD  
TBD  
mA  
mA  
Power Supply  
Power Supply Current  
Power Supply Voltage  
IEE  
VCC - VEE  
185  
233  
5.5  
mA  
V
3.0  
Test Conditions: Outputs terminated with 50to VCC.  
AC Characteristics  
Parameter  
Symbol  
Min  
Typ  
Max  
Units  
High Performance Option  
Propagation Delay  
CLK to OUT (SEL = 0)  
CLK to OUT (SEL = 1)  
SEL to OUT  
Tpd  
Tpd  
Tpd  
490  
340  
330  
590  
440  
430  
690  
540  
530  
ps  
ps  
ps  
Channel to Channel Skew  
<20  
ps  
GHz  
ps  
Maximum Operating ꢀrequency (Note 1)  
Minimum Pulse Width (Note 1)  
ꢀmax  
3.0  
PW min  
160  
IN to CLK (Note 1)  
Set Up Time  
Hold Time  
Tsu  
Th  
100  
100  
ps  
ps  
Output Rise and ꢀall Times (20% / 80%)  
Temperature Coefficient  
Tr / Tf  
125  
<1  
150  
ps  
o
ps / C  
Tpd / T  
Note 1: Guaranteed by characterization. Not production tested.  
Revision 1/January 23, 2001  
29  
www.semtech.com  
SK19XX Family  
1:9 Signal Distribution  
PRELIMINARY  
HIGH-PERꢀORMANCE PRODUCTS  
Ordering Information  
Ordering  
Code  
Temperature  
Range  
Package ID  
Tape and Reel  
32-TQꢀP  
5 x 5 mm  
Semtech's tape and reel packaging fully conforms to the latest EIA-481-1A and EIA-481-2A specifications.  
The antistatic embossed tape provides a secure cavity sealed with a peel-back cover tape.  
SK1900  
SK1901  
SK1902  
SK1903  
SK1904  
SK1925  
SK1926  
SK1927  
SK1928  
SK1929  
SK1930  
SK1999  
Commercial  
Commercial  
Commercial  
Commercial  
Commercial  
Commercial  
Commercial  
Commercial  
Commercial  
Commercial  
Commercial  
Commercial  
32-TQꢀP  
5 x 5 mm  
Typical  
32-TQꢀP  
5 x 5 mm  
+
+
+
+
+
+
+
+
+
+
32-TQꢀP  
5 x 5 mm  
+
+
+
+
+
+
+
+
PLCC Devices  
View from  
Tape Side  
32-TQꢀP  
5 x 5 mm  
PIN 1  
32-TQꢀP  
5 x 5 mm  
Linear Direction of Travel  
Typical  
32-TQꢀP  
5 x 5 mm  
32-TQꢀP  
5 x 5 mm  
+
+
+
+
+
+
+
+
32-TQꢀP  
5 x 5 mm  
SOIC & MSOP  
Devices  
View from  
Tape Side  
32-TQꢀP  
5 x 5 mm  
32-TQꢀP  
5 x 5 mm  
32-TQꢀP  
5 x 5 mm  
Linear Direction of Travel  
Typical  
Note: For tape and reel, add the letter “T” at the end of  
ordering code.  
+
+
+
+
+
+
+
+
+
Tape Width  
(mm)  
Max  
Device/Reel  
Reel Size  
(inch)  
Max  
Device/Tube  
Device Type  
+
+
+
LQFP & TQFP  
Devices  
+
+
+
View from  
Tape Side  
PLCC-28  
24  
12  
16  
24  
12  
12  
16  
16  
16  
750  
13  
13  
13  
13  
13  
13  
13  
13  
13  
37  
98  
PIN 1  
SOIC-8  
2,500  
2,500  
1,000  
2,500  
2,500  
1,000  
1,000  
1,000  
SOIC-16  
49  
Linear Direction of Travel  
SOIC-20  
38  
Ordering Information  
MSOP-8  
50  
To order devices which are to be delivered in Tape and Reel, add the suffix T to the  
device number being ordered.  
MSOP-10  
50  
LQꢀP-32 (7 x 7 mm)  
TQꢀP-32 (7 x 7 mm)  
TQꢀP-32 (5 x 5 mm)  
250 (tray)  
250 (tray)  
360 (tray)  
Contact Information  
Semtech Corporation  
High-Performance Products Division  
Division Headquarters  
10021 Willow Creek Road  
San Diego, CA 92131  
Phone (858) 695-1808  
FAX (858)695-2633  
Marketing Group  
1111 Comstock Street  
Santa Clara, CA 95054  
Phone: (408) 566-8776  
FAX: (408) 727-8994  
Revision 1/January 23, 2001  
www.semtech.com  
30  

相关型号:

SK1928

1:9 Signal Distribution
SEMTECH

SK1928ATF

Clock Driver, ECL, PQFP32
SEMTECH

SK1928ATFT

Clock Driver, ECL, PQFP32
SEMTECH

SK1929

1:9 Signal Distribution
SEMTECH

SK1929ATF

Clock Driver, ECL, PQFP32
SEMTECH

SK1929ATFT

Clock Driver, ECL, PQFP32
SEMTECH

SK1929T

Low Skew Clock Driver, 9 True Output(s), 0 Inverted Output(s), PQFP32, 5 X 5 MM, TQFP-32
SEMTECH

SK1930

1:9 Signal Distribution
SEMTECH

SK1930ATF

Clock Driver, ECL, PQFP32
SEMTECH

SK1999

1:9 Signal Distribution
SEMTECH

SK1999ATF

暂无描述
SEMTECH

SK1999ATFT

暂无描述
SEMTECH