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Integrated Circuit Systems, Inc.
ICS9112-28
Preliminary Product Preview
Low Skew Output Buffer
General Description
The ICS9112-28 is a high performance, low skew, low jitter clock driver. It is designed to distribute high speed clocks in PC systems operating at speeds from 0 to 133 MHz. The ICS9112-28 comes in an eight pin 150 mil SOIC package. It has four output clocks.
Features
* * * * * * Frequency range 0 - 133 MHz (3.3V) Less than 200 ps Jitter between outputs Skew controlled outputs Skew less than 250 ps between outputs Available in 8 pin 150 mil SOIC & 173 mil TSSOP packages. 3.3V 10% operation
Block Diagram
CLK0 CLK1 CLK_IN CLK2
Pin Configuration
CLK_IN CLK0 GND CLK1 1 2 3 4
ICS9112-28
8 7 6 5
CLK4 VDD CLK3 CLK2
8 pin SOIC
CLK3 CLK4
Pin Descriptions
PIN NUMBER 1 2 3 4 5 6 7 8 PIN NAME CLK_IN CLK0 GND CLK11 CLK2
1 1 1
TYPE IN OUT PWR OUT OUT OUT PWR Input reference frequency. Buffered clock output Ground Buffered clock output Buffered clock output Buffered clock output Power Supply (3.3V) Buffered clock output
DESCRIPTION
CLK3 VDD CLK4
1
OUT
Notes: 1. Weak pull-down on all outputs
9112-28 Rev B 01/09/06
PRODUCT PREVIEW documents contain information on new products in the sampling or preproduction phase of development. Characteristic data and other specifications are subject to change without notice.
ICS9112-28
Preliminary Product Preview
Absolute Maximum Ratings
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . Logic Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . Ambient Operating Temperature . . . . . . . . . . . . Storage Temperature . . . . . . . . . . . . . . . . . . . . . . 7.0 V GND -0.5 V to VDD +0.5 V 0C to +70C -65C to +150C
Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. These ratings are stress specifications only and functional operation of the device at these or any other conditions above those listed in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect product reliability.
Electrical Characteristics at 3.3V
VDD = 3.0 - 3.6 V, TA = 0 - 70 C unless otherwise stated
DC Characte ris tics PARAMETER Input Low Voltage Input High Voltage Input Low Current Input High Current Output Low Voltage1 Output High Voltage1 Supply Current Supply Current SYMBOL VIL VIH IIL IIH VOL VOH IDD IDD VIN=0V VIN=VDD IOL = 8mA IOH = 8mA REF = 0 MHz Unloaded outputs at 66.66 MHz 2.4 50.0 40.0 2.0 50.0 100.0 0.4 TEST CONDITIONS MIN TYP MAX 0.8 UNITS V V A A V V A mA
Notes: 1. Guaranteed by design and characterization. Not subject to 100% test. 2. All Skew specifications are mesured with a 50 transmission line, load teminated with 50 to 1.4V. 3. Duty cycle measured at 1.4V. 4. Skew measured at 1.4V on rising edges. Loading must be equal on outputs.
Switching Characteristics (3.3V Continued)
PARAMETER Propagation delay Rise Time1 Fall Time1 Output to Output Skew1 Device to Device Skew1 SYMBOL tp tr1 tf1 Tskew Tdsk-Tdsk Measured between 0.8V and 2.0V: CL=30pF @ all operating frequencies Measured between 2.0V and 0.8V; CL=30pF @ all operating frequencies All outputs equally loaded, CL=20pF Measured at VDD/2 on the CLKOUT pins of devices CONDITION MIN 4.5 TYP MAX 8.0 1.5 1.5 250 700 UNITS ns ns ns ps ps
Notes: 1. Guaranteed by design and characterization. Not subject to 100% test. 2. CLK_IN input has a threshold voltage of 1.4V 3. All parameters expected with loaded outputs
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ICS9112-28
Preliminary Product Preview
N
C
L
INDEX AREA
E
H
12 D
h x 45 A A1 SEATING PLANE .10 (.004)
150 mil (Narrow Body) SOIC In Millimeters In Inches SYMBOL COMMON DIMENSIONS COMMON DIMENSIONS MIN MAX MIN MAX A 1.35 1.75 .0532 .0688 A1 0.10 0.25 .0040 .0098 B 0.33 0.51 .013 .020 C 0.19 0.25 .0075 .0098 D SEE VARIATIONS SEE VARIATIONS E 3.80 4.00 .1497 .1574 e 0.050 BASIC 1.27 BASIC H 5.80 6.20 .2284 .2440 h 0.25 0.50 .010 .020 L 0.40 1.27 .016 .050 N SEE VARIATIONS SEE VARIATIONS 0 8 0 8 VARIATIONS N 8 D mm. MIN 4.80 MAX 5.00 D (inch) MIN MAX .1890 .1968
e
B
Reference Doc.: JEDEC Publication 95, MS-012 10-0030
150 mil (Narrow Body) SOIC
Ordering Information
ICS9112YM-28LF-T
Example:
ICS XXXX y M - PPP LF - T
Designation for tape and reel packaging
Lead Free, RoHS Compliant (Optional)
Pattern Number (2 or 3 digit number for parts with ROM code patterns) Package Type M=SOIC
Revision Designator (will not correlate with datasheet revision)
Device Type (consists of 3 or 4 digit numbers) Prefix ICS = Standard Device
PRODUCT PREVIEW documents contain information on new products in the sampling or preproduction phase of development. Characteristic data and other specifications are subject to change without notice.
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