ICS508 [ICSI]
PECL to CMOS Converter; PECL至CMOS转换器
| 型号： | ICS508 |
| 厂家： | 
INTEGRATED CIRCUIT SOLUTION INC |
| 描述： | PECL to CMOS Converter |
| 文件： | 总5页 (文件大小：53K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
PRELIMINARY INFORMATION
ICS508
PECL to CMOS Converter
Description
Features
The ICS508 is the most cost effective way to
generate a high quality, high frequency CMOS
clock output from a PECL clock input.
• Packaged as 8 pin SOIC or die
• Separate VDD supplies allow voltage
translation
The ICS508 has separate VDD supplies for the
PECL input buffer and the output buffer allowing
different voltages to be used. For example, the
input clock could use a 3.3 V supply while the
output operates from 2.5 V.
• Clock frequency of 0 - 250 MHz
• Duty cycle of 45/55
• Operating voltages of 2.375 to 5.5 V
• Tri-state output for board level testing
• 24 mA drive capability
The device has an Output Enable pin that tri-states
the clock output when the OE pin is taken low.
• Industrial temperature version available
• Advanced, low power CMOS process
The ICS508 is a member of the ClockBlocks™
family of devices.
Block Diagram
VDDP
VDDC
PECLIN
PECLIN
Output
CLK
Buffer
GND
GND
OE
MDS 508 C
1
Revision 012400
Printed 11/13/00
Integrated Circuit Systems, Inc. • 525 Race Street • San Jose •CA•95126•(408) 295-9800tel • www.icst.com
PRELIMINARY INFORMATION
ICS508
PECL to CMOS Converter
Pin Assignment
1
2
3
4
8
7
6
5
VDDP
VDDC
CLK
GND
OE
PECLIN
PECLIN
GND
Pin Descriptions
Number
Name
VDDP
PECLIN
PECLIN
GND
Type Description
1
2
3
4
5
6
7
8
O
I
Connect to 3.3 V or 5 V. Supplies PECL input buffer.
Complementary PECL clock input.
PECL clock input.
I
P
I
Connect to ground.
OE
Output enable. Tri-states CLK output when low. Internal pull-up to VDDC.
Connect to ground.
GND
P
O
P
CLK
Clock output.
VDDC
Connect to 2.5 V, or 3.3 V or 5 V. Supplies output buffer and OE pin.
Key: I = Input, O = output, P = power supply connection
MDS 508 C
2
Revision 012400
Printed 11/13/00
Integrated Circuit Systems, Inc. • 525 Race Street • San Jose •CA•95126•(408) 295-9800tel • www.icst.com
PRELIMINARY INFORMATION
ICS508
PECL to CMOS Converter
Electrical Specifications
Parameter
Conditions
Minimum Typical
Maximum Units
ABSOLUTE MAXIMUM RATINGS (stresses beyond these can permanently damage the device)
Supply Voltage, VDDP and VDDC
PECL Inputs
Clock Output and OE Pin
Ambient Operating Temperature
Referenced to GND
Referenced to GND
Referenced to GND
7
VDDP+0.5
VDDC+0.5
70
V
V
V
°C
°C
°C
°C
-0.5
-0.5
0
ICS508MI only
-40
85
Soldering Temperature
Storage temperature
Max of 10 seconds
260
150
-65
DC CHARACTERISTICS (VDDP = VDDC = 3.3 V unless otherwise noted)
Note 1
Operating Voltage, VDDP
3
2.375
5.5
5.5
V
V
Note 1
Operating Voltage, VDDC
Peak to Peak Input Voltage, PECLIN
Common Mode Range, PECLIN
Common Mode Range, PECLIN
Input High Voltage, VIH
0.3
1
V
VDDP = 5 V
VDDP - 3.7
VDDP - 2.0
2
VDDP - 0.6
VDDP - 0.6
VDDC
0.8
V
VDDP = 3.3 V
V
OE only
V
OE only
Input Low Voltage, VIL
V
VDDC = 5 V, IOH = -24 mA
VDDC = 5 V, IOL = 24 mA
VDDC = 3.3 V, IOH = -18 mA
VDDC = 3.3 V, IOL = 18 mA
VDDC = 2.5 V, IOH = -8 mA
VDDC = 2.5 V, IOL = 8 mA
OE
Output High Voltage, VOH
Output High Voltage, VOL
Output High Voltage, VOH
Output High Voltage, VOL
Output High Voltage, VOH
Output High Voltage, VOL
On-Chip Pull-up Resistor
VDDC-0.4
VDDC-0.4
VDDC-0.4
V
0.4
0.4
0.4
V
V
V
V
V
250
1.5
8
k Ω
mA
mA
Operating Supply Current, IDDP
Operating Supply Current, IDDC
100 MHz, no load
100 MHz, no load
Note 1: VDDP must alwa s be greater than or equal to VDDC.
MDS 508 C
3
Revision 012400
Printed 11/13/00
Integrated Circuit Systems, Inc. • 525 Race Street • San Jose •CA•95126•(408) 295-9800tel • www.icst.com
PRELIMINARY INFORMATION
ICS508
PECL to CMOS Converter
Electrical Specifications
Parameter
Conditions
Minimum
Typical
Maximum
Units
AC CHARACTERISTICS (VDDP = VDDC = 3.3V unless otherwise noted)
Input Frequency
0
250
MH z
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
%
%
%
%
%
%
%
%
%
%
%
VDDC = 5 V
VDDC = 3.3 V
VDDC = 2.5 V
VDDC = 5 V
VDDC = 3.3 V
VDDC = 2.5 V
Output Clock Rise Time, 0.8 to 2 V
0.4
0.6
1
Output Clock Fall Time, 2 V to 0.8 V
0.4
0.6
1
Output Enable Time, OE high to ouput on
Output Disable Time, OE low to tri-state
Propagation Delay
7
20
20
6
7
VDDP=5 V, VDDC=5 V
VDDP=5 V, VDDC=3.3 V
VDDP=5 V, VDDC=2.5 V
VDDP=3.3 V, VDDC=3.3 V
VDDP=3.3 V, VDDC=2.5 V
4
4.5
5.5
4.5
5.5
7
9
7
9
Output Clock Duty Cycle, 0-100 MHz
Output Clock Duty Cycle, 100-166 MHz
Any VDD combination
VDDP=5 V, VDDC=5 V
VDDP=5 V, VDDC=3.3 V
VDDP=5 V, VDDC=2.5 V
VDDP=3.3 V, VDDC=3.3 V
VDDP=3.3 V, VDDC=2.5 V
VDDP=5 V, VDDC=5 V
VDDP=5 V, VDDC=3.3 V
VDDP=5 V, VDDC=2.5 V
VDDP=3.3 V, VDDC=3.3 V
VDDP=3.3 V, VDDC=2.5 V
45
45
45
40
40
45
40
40
35
35
40
55
55
55
60
60
55
60
60
65
65
60
Output Clock Duty Cycle, 166-250 MHz
MDS 508 C
4
Revision 012400
Printed 11/13/00
Integrated Circuit Systems, Inc. • 525 Race Street • San Jose •CA•95126•(408) 295-9800tel • www.icst.com
PRELIMINARY INFORMATION
ICS508
PECL to CMOS Converter
External Components
The ICS508 requires two 0.01µF decoupling capacitors to be connected between VDDP and GND and
between VDDC and GND. They must be connected close to the ICS508 to minimize lead inductance. A
33 Ω series terminating resistor can be used next to the CLK pin.
Package Outline and Package Dimensions
(For current dimensional specifications, see JEDEC Publication No. 95.)
8 pin SOIC
Inches
Min
Millimeters
Symbol
A
Max
Min
1.35
Max
0.0532
0.0040
0.0130
0.0075
0.1890
0.1497
.050 BSC
0.2284
0.0099
0.0160
0.0688
0.0098
0.0200
0.0098
0.1968
0.1574
1.75
0.24
0.51
0.24
5.00
4.00
A1
0.10
B
C
0.33
E
H
0.19
INDEX
AREA
D
E
e
4.80
3.80
1.27 BSC
5.80
H
h
0.2440
0.0195
0.0500
6.20
0.50
1.27
1
2
0.25
h x 45°
L
0.41
D
A
L
A1
C
B
e
Ordering Information
Part/Order Number
ICS508M
Marking
ICS508M
ICS508M
ICS508I
ICS508I
-
Package
8 pin SOIC
8 pin SOIC on tape and reel
8 pin SOIC
8 pin SOIC on tape and reel -40 to +85 °C
Temperature
0 to 70 °C
0 to 70 °C
ICS508MT
ICS508MI
ICS508MIT
ICS508-DWF
ICS508-DPK
-40 to +85 °C
Die on uncut, probed wafers
Tested die in waffle pack
0 to 70 °C
0 to 70 °C
-
While the information presented herein has been checked for both accuracy and reliability, ICS assumes no responsibility for either its use or for the 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.
MDS 508 C
5
Revision 012400
Printed 11/13/00
Integrated Circuit Systems, Inc. • 525 Race Street • San Jose •CA•95126•(408) 295-9800tel • www.icst.com
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