ICS83940DYI-01T [ICSI]

LOW SKEW, 1-TO-18 LVPECL-TO-LVCMOS / LVTTL FANOUT BUFFER; 低偏移, 1 - TO- 18 LVPECL - TO- LVCMOS / LVTTL扇出缓冲器
ICS83940DYI-01T
型号: ICS83940DYI-01T
厂家: INTEGRATED CIRCUIT SOLUTION INC    INTEGRATED CIRCUIT SOLUTION INC
描述:

LOW SKEW, 1-TO-18 LVPECL-TO-LVCMOS / LVTTL FANOUT BUFFER
低偏移, 1 - TO- 18 LVPECL - TO- LVCMOS / LVTTL扇出缓冲器

文件: 总13页 (文件大小:260K)
中文:  中文翻译
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PRELIMINARY  
ICS83940I-01  
Integrated  
Circuit  
Systems, Inc.  
L
OW  
SKEW, 1-TO-18  
LVPECL-TO-LVCMOS / LVTTL FANOUT  
BUFFER  
FEATURES  
GENERAL DESCRIPTION  
18 LVCMOS/LVTTL outputs, 23typical output impedance  
Selectable LVCMOS_CLK or LVPECL clock inputs  
The ICS83940I-01 is a low skew, 1-to-18  
ICS  
LVPECL-to-LVCMOS/LVTTL Fanout Buffer and a  
member of the HiPerClockS™ family of High Per-  
formance Clock Solutions from ICS. The  
ICS83940I-01 has two selectable clock inputs.  
HiPerClockS™  
LVCMOS_CLK supports the following input types:  
LVCMOS or LVTTL  
The PCLK, nPCLK pair can accept LVPECL, CML or SSTL  
input levels. The single ended clock input accepts LVCMOS  
or LVTTL input levels. The low impedance LVCMOS/LVTTL  
outputs are designed to drive 50series or parallel termi-  
nated transmission lines.The effective fanout can be increased  
from 18 to 36 by utilizing the ability of the outputs to drive two  
series terminated lines.  
PCLK, nPCLK supports the following input types:  
LVPECL, CML, SSTL  
Maximum output frequency: 250MHz  
Output skew: 150ps (maximum)  
Part-to-part skew: 750ps (maximum)  
Full 3.3V, 2.5V or mixed 3.3V, 2.5V supply modes  
-40°C to 85°C ambient operating temperature  
The ICS83940I-01 is characterized at full 3.3V, full 2.5V and  
mixed 3.3V input and 2.5V output operating supply modes. Guar-  
anteed output and part-to-part skew characteristics make the  
ICS83940I-01 ideal for those clock distribution applications de-  
manding well defined performance and repeatability.  
Pin compatible with the MPC940L in single supply  
applications  
BLOCK DIAGRAM  
PIN ASSIGNMENT  
32 31 30 29 28 27 26 25  
Q6  
1
2
3
4
5
6
7
8
24  
23  
22  
21  
20  
19  
18  
17  
GND  
GND  
CLK_SEL  
Q7  
Q8  
LVCMOS_CLK  
CLK_SEL  
PCLK  
PCLK  
0
nPCLK  
18  
VDDO  
Q9  
ICS83940I-01  
Q0:Q17  
1
LVCMOS_CLK  
Q10  
Q11  
GND  
nPCLK  
VDD  
VDDO  
9
10 11 12 13 14 15 16  
32-Lead LQFP  
Y Pacakge  
7mm x 7mm x 1.4mm package body  
TopView  
The Preliminary Information presented herein represents a product in prototyping or pre-production.The noted characteristics are based on initial  
product characterization. Integrated Circuit Systems, Incorporated (ICS) reserves the right to change any circuitry or specifications without notice.  
83940DYI-01  
www.icst.com/products/hiperclocks.html  
REV. A MARCH 1, 2004  
1
PRELIMINARY  
ICS83940I-01  
Integrated  
Circuit  
Systems, Inc.  
L
OW  
S
KEW, 1-TO-18  
LVPECL-TO-LVCMOS / LVTTL FANOUT  
BUFFER  
TABLE 1. PIN DESCRIPTIONS  
Number  
Name  
Type  
Description  
1, 2, 12, 17, 25  
GND  
Power  
Power supply ground.  
3
LVCMOS_CLK  
Input Pulldown Clock input. LVCMOS / LVTTL interface levels.  
Clock select input. Selects LVCMOS / LVTTL clock  
Input Pulldown input when HIGH. Selects PCLK, nPCLK inputs  
when LOW. LVCMOS / LVTTL interface levels.  
4
CLK_SEL  
5
6
PCLK  
Input Pulldown Non-inverting differential LVPECL clock input.  
Inverting differential LVPECL clock input.  
nPCLK  
Input  
VDD/2 default when left floating.  
7
VDD  
Power  
Power  
Core supply pins.  
8, 16, 21, 29  
VDDO  
Output supply pins.  
9, 10, 11, 13, 14, Q17, Q16, Q15, Q14, Q13,  
15, 18, 19, 20, 22,  
23, 24, 26, 27, 28,  
30, 31, 32  
Q12, Q11, Q10, Q9, Q8,  
Q7, Q6, Q5, Q4, Q3,  
Q2, Q1, Q0  
Output  
Clock outputs. LVCMOS / LVTTL interface levels.  
NOTE: Pulldown refers to internal input resistors. See Table 2, Pin Characteristics, for typical values.  
TABLE 2. PIN CHARACTERISTICS  
Symbol  
Parameter  
Test Conditions  
Minimum Typical Maximum Units  
CIN  
Input Capacitance  
4
pF  
Power Dissipation Capacitance  
(per output)  
CPD  
6
pF  
RPULLDOWN Input Pulldown Resistor  
ROUT Output Impedance  
51  
K  
18  
28  
TABLE 3A. CLOCK SELECT FUNCTION TABLE  
Control Input  
Clock  
CLK_SEL  
PCLK, nPCLK  
Selected  
LVCMOS_CLK  
De-selected  
Selected  
0
1
De-selected  
TABLE 3B. CLOCK INPUT FUNCTION TABLE  
Inputs  
Outputs  
Input to Output Mode  
Polarity  
CLK_SEL LVCMOS_CLK  
PCLK  
nPCLK  
Q0:Q17  
LOW  
0
0
0
1
1
0
Differential to Single Ended  
Differential to Single Ended  
Non Inverting  
Non Inverting  
HIGH  
Biased;  
NOTE 1  
Biased;  
NOTE 1  
0
0
0
1
LOW  
Single Ended to Single Ended Non Inverting  
Single Ended to Single Ended Non Inverting  
HIGH  
0
0
1
1
0
Biased; NOTE 1  
0
1
HIGH  
LOW  
LOW  
HIGH  
Single Ended to Single Ended  
Single Ended to Single Ended  
Inverting  
Inverting  
Biased; NOTE 1  
Single Ended to Single Ended Non Inverting  
Single Ended to Single Ended Non Inverting  
1
NOTE 1: Please refer to the Application Information section, "Wiring the Differential Input to Accept Single Ended Levels".  
83940DYI-01  
www.icst.com/products/hiperclocks.html  
REV. A MARCH 1, 2004  
2
PRELIMINARY  
ICS83940I-01  
Integrated  
Circuit  
Systems, Inc.  
L
OW  
S
KEW, 1-TO-18  
LVPECL-TO-LVCMOS / LVTTL FANOUT  
BUFFER  
ABSOLUTE MAXIMUM RATINGS  
SupplyVoltage, V  
3.6V  
NOTE: Stresses beyond those listed under Absolute  
Maximum Ratings may cause permanent damage to the  
device.These ratings are stress specifications only.Functional  
operation of product at these conditions or any conditions be-  
yond those listed in the DC Characteristics or AC Character-  
istics is not implied. Exposure to absolute maximum rating  
conditions for extended periods may affect product reliability.  
DD  
Inputs, V  
-0.3V to VDD + 0.3V  
-0.3V to VDDO + 0.3V  
20mA  
I
Outputs, VO  
Input Current, IIN  
StorageTemperature, T  
-40°C to 125°C  
STG  
83940DYI-01  
www.icst.com/products/hiperclocks.html  
REV. A MARCH 1, 2004  
3
PRELIMINARY  
ICS83940I-01  
Integrated  
Circuit  
Systems, Inc.  
L
OW  
S
KEW, 1-TO-18  
LVPECL-TO-LVCMOS / LVTTL FANOUT  
BUFFER  
TABLE 4A. DC CHARACTERISTICS, VDD = VDDO = 3.3V 5ꢀ, TA = -40° TO 85°  
Symbol Parameter  
Test Conditions  
Minimum Typical Maximum Units  
VIH  
VIL  
Input High Voltage  
LVCMOS_CLK  
LVCMOS_CLK  
PCLK, nPCLK  
2.4  
VDD  
0.8  
V
V
Input Low Voltage  
VPP  
Peak-to-Peak Input Voltage  
500  
1000  
mV  
Input Common Mode Voltage;  
NOTE 1, 2  
VCMR  
PCLK, nPCLK  
V
DD - 1.4  
VDD - 0.6  
200  
V
IIN  
Input Current  
µA  
V
VOH  
VOL  
IDD  
Output High Voltage  
Output Low Voltage  
Core Supply Current  
IOH = -20mA  
IOL = 20mA  
2.4  
0.5  
25  
V
mA  
NOTE 1: For single ended applications, the maximum input voltage for PCLK, nPCLK is VDD + 0.3V.  
NOTE 2: Common mode voltage is defined as VIH.  
TABLE 5A. AC CHARACTERISTICS, VDD = VDDO = 3.3V 5ꢀ, TA = -40° TO 85°  
Symbol Parameter  
fMAX Output Frequency  
Test Conditions  
Minimum Typical Maximum Units  
250  
MHz  
PCLK, nPCLK;  
NOTE 1, 5  
LVCMOS_CLK;  
NOTE 2, 5  
PCLK, nPCLK;  
NOTE 1, 5  
LVCMOS_CLK;  
NOTE 2, 5  
f 150MHz  
f 150MHz  
f > 150MHz  
f > 150MHz  
ns  
tpLH  
Propagation Delay  
Propagation Delay  
ns  
ns  
ns  
tpLH  
PCLK, nPCLK  
LVCMOS_CLK  
PCLK, nPCLK  
LVCMOS_CLK  
PCLK, nPCLK  
LVCMOS_CLK  
PCLK, nPCLK  
LVCMOS_CLK  
ps  
ps  
ns  
ns  
ns  
ns  
ps  
ps  
ns  
Output Skew;  
NOTE 3, 5  
Measured on  
rising edge @VDDO/2  
tsk(o)  
f 150MHz  
f 150MHz  
f > 150MHz  
f > 150MHz  
Part-to-Part Skew;  
NOTE 6  
tsk(pp)  
tsk(pp)  
Part-to-Part Skew;  
NOTE 6  
Part-to-Part Skew;  
NOTE 4, 5  
Measured on  
rising edge @VDDO/2  
tsk(pp)  
tR, tF  
Output Rise/Fall Time  
0.5 to 2.4V  
f < 134MHz  
134MHz f 250MHz  
0.3  
45  
40  
1.1  
55  
60  
50  
50  
odc  
Output Duty Cycle  
All parameters measured at 200MHz unless noted otherwise.  
NOTE 1: Measured from the differential input crossing point to the output VDDO/2.  
NOTE 2: Measured from VDD/2 to VDDO/2.  
NOTE 3: Defined as skew between outputs at the same supply voltage and with equal load conditions. Measured at VDDO/2.  
NOTE 4: Defined as skew between outputs on different devices operating at the same supply voltages, same temperature,  
and with equal load conditions. Using the same type of inputs on each device, the outputs are measured at VDDO/2.  
NOTE 5: This parameter is defined in accordance with JEDEC Standard 65.  
NOTE 6: Defined as skew between outputs on different devices, across temperature and voltage ranges, and with equal  
load conditions. Using the same type of inputs on each device, the outputs are measured at VDDO/2.  
83940DYI-01  
www.icst.com/products/hiperclocks.html  
REV. A MARCH 1, 2004  
4
PRELIMINARY  
ICS83940I-01  
Integrated  
Circuit  
Systems, Inc.  
L
OW  
S
KEW, 1-TO-18  
LVPECL-TO-LVCMOS / LVTTL FANOUT  
BUFFER  
TABLE 4B. DC CHARACTERISTICS, VDD = 3.3V 5ꢀ, VDDO = 2.5V 5ꢀ, TA = -40° TO 85°  
Symbol Parameter  
Test Conditions  
Minimum Typical Maximum Units  
VIH  
VIL  
Input High Voltage  
LVCMOS_CLK  
LVCMOS_CLK  
PCLK, nPCLK  
2.4  
VDD  
0.8  
V
V
Input Low Voltage  
VPP  
Peak-to-Peak Input Voltage  
300  
1000  
mV  
Input Common Mode Voltage;  
NOTE 1, 2  
VCMR  
PCLK, nPCLK  
VDD - 1.4  
VDD - 0.6  
200  
V
IIN  
Input Current  
µA  
V
VOH  
VOL  
IDD  
Output High Voltage  
Output Low Voltage  
Core Supply Current  
IOH = -20mA  
IOL = 20mA  
1.8  
0.5  
25  
V
mA  
NOTE 1: For single ended applications, the maximum input voltage for PCLK, nPCLK is VDD + 0.3V.  
NOTE 2: Common mode voltage is defined as VIH.  
TABLE 5B. AC CHARACTERISTICS, VDD = 3.3V 5ꢀ, VDDO = 2.5V 5ꢀ, TA = -40° TO 85°  
Symbol Parameter  
fMAX Output Frequency  
Test Conditions  
Minimum Typical Maximum Units  
250  
MHz  
PCLK, nPCLK;  
NOTE 1, 5  
LVCMOS_CLK;  
NOTE 2, 5  
PCLK, nPCLK;  
NOTE 1, 5  
LVCMOS_CLK;  
NOTE 2, 5  
f 150MHz  
f 150MHz  
f > 150MHz  
f > 150MHz  
ns  
tpLH  
Propagation Delay  
Propagation Delay  
ns  
ns  
ns  
tpLH  
PCLK, nPCLK  
LVCMOS_CLK  
PCLK, nPCLK  
LVCMOS_CLK  
PCLK, nPCLK  
LVCMOS_CLK  
PCLK, nPCLK  
LVCMOS_CLK  
ps  
ps  
ns  
ns  
ns  
ns  
ps  
ps  
ns  
Output Skew;  
NOTE 3, 5  
Measured on  
rising edge @VDDO/2  
tsk(o)  
f 150MHz  
f 150MHz  
f > 150MHz  
f > 150MHz  
Part-to-Part Skew;  
NOTE 6  
tsk(pp)  
tsk(pp)  
tsk(pp)  
Part-to-Part Skew;  
NOTE 6  
Part-to-Part Skew;  
NOTE 4, 5  
Measured on  
rising edge @VDDO/2  
tR, tF  
odc  
Output Rise/Fall Time  
Output Duty Cycle  
0.5 to 1.8V  
0.3  
45  
1.2  
55  
f < 134MHz  
50  
All parameters measured at 200MHz unless noted otherwise.  
NOTE 1: Measured from the differential input crossing point to the output VDDO/2.  
NOTE 2: Measured from VDD/2 to VDDO/2.  
NOTE 3: Defined as skew between outputs at the same supply voltage and with equal load conditions. Measured at VDDO/2.  
NOTE 4: Defined as skew between outputs on different devices operating at the same supply voltages, same temperature,  
and with equal load conditions. Using the same type of inputs on each device, the outputs are measured at VDDO/2.  
NOTE 5: This parameter is defined in accordance with JEDEC Standard 65.  
NOTE 6: Defined as skew between outputs on different devices, across temperature and voltage ranges, and with equal  
load conditions. Using the same type of inputs on each device, the outputs are measured at VDDO/2.  
83940DYI-01  
www.icst.com/products/hiperclocks.html  
REV. A MARCH 1, 2004  
5
PRELIMINARY  
ICS83940I-01  
Integrated  
Circuit  
Systems, Inc.  
L
OW  
S
KEW, 1-TO-18  
LVPECL-TO-LVCMOS / LVTTL FANOUT  
BUFFER  
TABLE 4C. DC CHARACTERISTICS, VDD = VDDO = 2.5V 5ꢀ, TA = -40° TO 85°  
Symbol Parameter Test Conditions  
Minimum Typical Maximum Units  
VIH  
VIL  
Input High Voltage  
LVCMOS_CLK  
LVCMOS_CLK  
2
VDD  
0.8  
V
V
Input Low Voltage  
Peak-to-Peak  
Input Voltage  
Input Common Mode Voltage;  
NOTE 1, 2  
VPP  
PCLK, nPCLK  
PCLK, nPCLK  
300  
1000  
mV  
V
VCMR  
V
DD - 1.4  
VDD - 0.6  
200  
IIN  
Input Current  
µA  
V
VOH  
VOL  
IDD  
Output High Voltage  
Output Low Voltage  
Core Supply Current  
IOH = -12mA  
IOL = 12mA  
1.8  
0.5  
25  
V
mA  
NOTE 1: For single ended applications, the maximum input voltage for PCLK, nPCLK is VDD + 0.3V.  
NOTE 2: Common mode voltage is defined as VIH.  
TABLE 5C. AC CHARACTERISTICS, VDD = VDDO = 2.5V 5ꢀ, TA = -40° TO 85°  
Symbol Parameter  
fMAX Output Frequency  
Test Conditions  
Minimum Typical Maximum Units  
200  
MHz  
PCLK, nPCLK;  
NOTE 1, 5  
LVCMOS_CLK;  
NOTE 2, 5  
PCLK, nPCLK;  
NOTE 1, 5  
LVCMOS_CLK;  
NOTE 2, 5  
f 150MHz  
f 150MHz  
f > 150MHz  
f > 150MHz  
ns  
Propagation Delay;  
tpLH  
ns  
ns  
ns  
Propagation Delay;  
tpLH  
PCLK, nPCLK  
LVCMOS_CLK  
PCLK, nPCLK  
LVCMOS_CLK  
PCLK, nPCLK  
LVCMOS_CLK  
PCLK, nPCLK  
LVCMOS_CLK  
ps  
ps  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
Output Skew;  
NOTE 3, 5  
Measured on  
rising edge @VDDO/2  
tsk(o)  
f 150MHz  
f 150MHz  
f > 150MHz  
f > 150MHz  
Part-to-Part Skew;  
NOTE 6  
tsk(pp)  
tsk(pp)  
tsk(pp)  
Part-to-Part Skew;  
NOTE 6  
Part-to-Part Skew;  
NOTE 4, 5  
Measured on  
rising edge @VDDO/2  
tR, tF  
odc  
Output Rise/Fall Time  
Output Duty Cycle  
0.5 to 1.8V  
0.3  
45  
1.2  
55  
f < 134MHz  
All parameters measured at 200MHz unless noted otherwise.  
NOTE 1: Measured from the differential input crossing point to the output VDDO/2.  
NOTE 2: Measured from VDD/2 to VDDO/2.  
NOTE 3: Defined as skew between outputs at the same supply voltage and with equal load conditions. Measured at VDDO/2.  
NOTE 4: Defined as skew between outputs on different devices operating at the same supply voltages, same temperature,  
and with equal load conditions. Using the same type of inputs on each device, the outputs are measured at VDDO/2.  
NOTE 5: This parameter is defined in accordance with JEDEC Standard 65.  
NOTE 6: Defined as skew between outputs on different devices, across temperature and voltage ranges,  
and with equal load conditions. Using the same type of inputs on each device, the outputs are measured at VDDO/2.  
83940DYI-01  
www.icst.com/products/hiperclocks.html  
REV. A MARCH 1, 2004  
6
PRELIMINARY  
ICS83940I-01  
Integrated  
Circuit  
Systems, Inc.  
L
OW  
S
KEW, 1-TO-18  
LVPECL-TO-LVCMOS / LVTTL FANOUT  
BUFFER  
PARAMETER MEASUREMENT INFORMATION  
1.25V 5ꢀ  
1.65V 5ꢀ  
2.05V 5ꢀ  
SCOPE  
SCOPE  
,
VDD  
VDD  
VDDO  
VDDO  
Qx  
Qx  
LVCMOS  
LVCMOS  
GND  
GND  
-1.65V 5ꢀ  
-1.25V 5ꢀ  
3.3V OUTPUT LOAD AC TEST CIRCUIT  
3.3V/2.5V OUTPUT LOAD AC TEST CIRCUIT  
1.25V 5ꢀ  
VDD  
SCOPE  
,
VDD  
nPCLK  
VDDO  
VPP  
VCMR  
Cross Points  
Qx  
LVCMOS  
GND  
PCLK  
GND  
-1.25V 5ꢀ  
2.5V OUTPUT LOAD AC TEST CIRCUIT  
DIFFERENTIAL INPUT LEVEL  
PART 1  
VDDO  
VDDO  
Qx  
Qy  
2
Qx  
2
PART 2  
Qy  
VDDO  
2
VDDO  
2
tsk(o)  
tsk(pp)  
PART-TO-PART SKEW  
OUTPUT SKEW  
83940DYI-01  
www.icst.com/products/hiperclocks.html  
REV. A MARCH 1, 2004  
7
PRELIMINARY  
ICS83940I-01  
Integrated  
Circuit  
Systems, Inc.  
L
OW  
S
KEW, 1-TO-18  
LVPECL-TO-LVCMOS / LVTTL FANOUT  
BUFFER  
VDDO  
2
LVCMOS_CLK  
nPCLK  
PCLK  
VDDO  
2
Q0:Q17  
tPD  
PROPAGATION DELAY  
1.8V  
1.8V  
2.4V  
tF  
2.4V  
tR  
0.5V  
0.5V  
0.5V  
0.5V  
Clock  
Outputs  
Clock Outputs  
tR  
tF  
2.5V OUTPUT RISE/FALL TIME  
3.3V OUTPUT RISE/FALL TIME  
VDDO  
2
Q0:Q17  
Pulse Width  
tPERIOD  
tPW  
odc =  
tPERIOD  
odc & tPERIOD  
83940DYI-01  
www.icst.com/products/hiperclocks.html  
REV. A MARCH 1, 2004  
8
PRELIMINARY  
ICS83940I-01  
Integrated  
Circuit  
Systems, Inc.  
L
OW  
S
KEW, 1-TO-18  
LVPECL-TO-LVCMOS / LVTTL FANOUT  
BUFFER  
APPLICATION INFORMATION  
WIRING THE DIFFERENTIAL INPUT TO ACCEPT SINGLE ENDED LEVELS  
Figure 1 shows how the differential input can be wired to accept  
single ended levels. The reference voltage V_REF = VDD/2 is  
generated by the bias resistors R1, R2 and C1.This bias circuit  
should be located as close as possible to the input pin.The ratio  
of R1 and R2 might need to be adjusted to position theV_REF in  
the center of the input voltage swing. For example, if the input  
clock swing is only 2.5V andVDD = 3.3V, V_REF should be 1.25V  
and R2/R1 = 0.609.  
VDD  
R1  
1K  
Single Ended Clock Input  
V_REF  
PCLK  
nPCLK  
C1  
0.1u  
R2  
1K  
FIGURE 1. SINGLE ENDED SIGNAL DRIVING DIFFERENTIAL INPUT  
83940DYI-01  
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REV. A MARCH 1, 2004  
9
PRELIMINARY  
ICS83940I-01  
Integrated  
Circuit  
Systems, Inc.  
L
OW  
S
KEW, 1-TO-18  
LVPECL-TO-LVCMOS / LVTTL FANOUT  
BUFFER  
LVPECL CLOCK INPUT INTERFACE  
The PCLK /nPCLK accepts LVPECL, CML, SSTL and other here are examples only. If the driver is from another vendor,  
differential signals. Both VSWING and VOH must meet the VPP use their termination recommendation. Please consult with  
and VCMR input requirements. Figures 2A to 2E show interface the vendor of the driver component to confirm the driver ter-  
examples for the HiPerClockS PCLK/nPCLK input driven by mination requirements.  
the most common driver types.The input interfaces suggested  
2.5V  
3.3V  
3.3V  
3.3V  
2.5V  
3.3V  
R3  
120  
R4  
120  
R1  
50  
R2  
50  
SSTL  
Zo = 60 Ohm  
Zo = 60 Ohm  
CML  
Zo = 50 Ohm  
Zo = 50 Ohm  
PCLK  
PCLK  
nPCLK  
HiPerClockS  
PCLK/nPCLK  
nPCLK  
HiPerClockS  
R1  
120  
R2  
120  
PCLK/nPCLK  
FIGURE 2A. HIPERCLOCKS PCLK/NPCLK INPUT DRIVEN  
BY A CML DRIVER  
FIGURE 2B. HIPERCLOCKS PCLK/NPCLK INPUT DRIVEN  
BY AN SSTL DRIVER  
3.3V  
3.3V  
3.3V  
3.3V  
3.3V  
3.3V  
R3  
125  
R4  
125  
Zo = 50 Ohm  
R3  
1K  
R4  
1K  
C1  
C2  
Zo = 50 Ohm  
Zo = 50 Ohm  
LVDS  
PCLK  
PCLK  
R5  
100  
nPCLK  
Zo = 50 Ohm  
HiPerClockS  
PCLK/nPCLK  
nPCLK  
HiPerClockS  
Input  
LVPECL  
R1  
1K  
R2  
1K  
R1  
84  
R2  
84  
FIGURE 2C. HIPERCLOCKS PCLK/NPCLK INPUT DRIVEN  
BY A 3.3V LVPECL DRIVER  
FIGURE 2D. HIPERCLOCKS PCLK/NPCLK INPUT DRIVEN  
BY A 3.3V LVDS DRIVER  
3.3V  
3.3V  
3.3V  
R3  
84  
R4  
84  
C1  
C2  
3.3V LVPECL  
Zo = 50 Ohm  
Zo = 50 Ohm  
PCLK  
nPCLK  
HiPerClockS  
PCLK/nPCLK  
R5  
100 - 200  
R6  
100 - 200  
R1  
125  
R2  
125  
FIGURE 2E. HIPERCLOCKS PCLK/NPCLK INPUT DRIVEN  
BY A 3.3V LVPECL DRIVER WITH AC COUPLE  
83940DYI-01  
www.icst.com/products/hiperclocks.html  
10  
REV. A MARCH 1, 2004  
PRELIMINARY  
ICS83940I-01  
Integrated  
Circuit  
Systems, Inc.  
L
OW  
S
KEW, 1-TO-18  
LVPECL-TO-LVCMOS / LVTTL FANOUT  
BUFFER  
RELIABILITY INFORMATION  
TABLE 6. θJAVS. AIR FLOW TABLE  
θJA byVelocity (Linear Feet per Minute)  
0
200  
55.9°C/W  
42.1°C/W  
500  
50.1°C/W  
39.4°C/W  
Single-Layer PCB, JEDEC Standard Test Boards  
Multi-Layer PCB, JEDEC Standard Test Boards  
67.8°C/W  
47.9°C/W  
NOTE: Most modern PCB designs use multi-layered boards.The data in the second row pertains to most designs.  
TRANSISTOR COUNT  
The transistor count for ICS83940I-01 is: 819  
83940DYI-01  
www.icst.com/products/hiperclocks.html  
REV. A MARCH 1, 2004  
11  
PRELIMINARY  
ICS83940I-01  
Integrated  
Circuit  
Systems, Inc.  
L
OW  
S
KEW, 1-TO-18  
LVPECL-TO-LVCMOS / LVTTL FANOUT  
BUFFER  
PACKAGE OUTLINE - Y SUFFIX  
TABLE 7. PACKAGE DIMENSIONS  
JEDEC VARIATION  
ALL DIMENSIONS IN MILLIMETERS  
BBA  
SYMBOL  
MINIMUM  
NOMINAL  
MAXIMUM  
N
A
32  
--  
--  
--  
1.60  
0.15  
1.45  
0.45  
0.20  
A1  
A2  
b
0.05  
1.35  
0.30  
0.09  
1.40  
0.37  
c
--  
D
9.00 BASIC  
7.00 BASIC  
5.60 Ref.  
9.00 BASIC  
7.00 BASIC  
5.60 Ref.  
0.80 BASIC  
0.60  
D1  
D2  
E
E1  
E2  
e
L
0.45  
0.75  
θ
--  
0°  
7°  
ccc  
--  
--  
0.10  
Reference Document: JEDEC Publication 95, MS-026  
83940DYI-01  
www.icst.com/products/hiperclocks.html  
12  
REV. A MARCH 1, 2004  
PRELIMINARY  
ICS83940I-01  
Integrated  
Circuit  
Systems, Inc.  
L
OW  
S
KEW, 1-TO-18  
LVPECL-TO-LVCMOS / LVTTL FANOUT  
BUFFER  
TABLE 8. ORDERING INFORMATION  
Part/Order Number  
Marking  
Package  
Count  
250 per tray  
1000  
Temperature  
-40°C to 85°C  
-40°C to 85°C  
-40°C to 85°C  
ICS83940DYI-01  
ICS83940DYI-01T  
ICS83940DYI-01LF  
ICS83940DI01  
ICS83940DI01  
ICS83940DI01L  
32 Lead LQFP  
32 Lead LQFP on Tape and Reel  
32 Lead "Lead Free" LQFP  
250 per tray  
32 Lead "Lead Free" LQFP on  
Tape and Reel  
ICS83940DYI-01LFT  
ICS83940DI01L  
1000  
-40°C to 85°C  
While the information presented herein has been checked for both accuracy and reliability, Integrated Circuit Systems, Incorporated (ICS) assumes no responsibility for either its use or  
for infringement of any patents or other rights of third parties, which would result from its use. No other circuits, patents, or licenses are implied. This product is intended for use in normal  
commercial applications. Any other applications such as those requiring extended temperature range, high reliability, or other extraordinary environmental requirements are not  
recommended without additional processing by ICS. ICS reserves the right to change any circuitry or specifications without notice. ICS does not authorize or warrant any ICS product for  
use in life support devices or critical medical instruments.  
83940DYI-01  
www.icst.com/products/hiperclocks.html  
REV. A MARCH 1, 2004  
13  

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