ICS9112-28 Integrated Circuit Systems, Inc. Preliminary Product Preview Low Skew Output Buffer General Description Features 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. • 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 CLK_IN 1 CLK0 2 GND 3 CLK1 4 ICS9112-28 Pin Configuration 8 CLK4 7 VDD 6 CLK3 5 CLK2 CLK2 8 pin SOIC CLK3 CLK4 Pin Descriptions PIN NUMBER PIN NAME TYPE 1 CLK_IN IN 2 CLK0 3 GND 4 5 1 DESCRIPTION Input reference frequency. OUT Buffered clock output PWR Ground CLK11 OUT Buffered clock output 1 OUT Buffered clock output 1 CLK2 6 CLK3 OUT Buffered clock output 7 VDD PWR Power Supply (3.3V) OUT Buffered clock output 8 1 CLK4 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 0°C to +70°C –65°C to +150°C 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 SYMBOL TEST CONDITIONS MIN TYP MAX UNITS 0.8 V Input Low Voltage VIL Input High Voltage VIH Input Low Current IIL VIN=0V 50.0 µA Input High Current IIH VIN=VDD 100.0 µA Output Low Voltage1 VOL IOL = 8mA 0.4 V Output High Voltage1 VOH IOH = 8mA Supply Current IDD REF = 0 MHz 50.0 µA Supply Current IDD Unloaded outputs at 66.66 MHz 40.0 mA 2.0 V 2.4 V Notes: 1. Guaranteed by design and characterization. Not subject to 100% test. 2. All Skew specifications are mesured with a 50Ω transmission line, load teminated with 50Ω 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 SYMBOL CONDITION MIN 4.5 TYP MAX UNITS 8.0 ns Propagation delay tp Rise Time1 tr1 Measured between 0.8V and 2.0V: CL=30pF @ all operating frequencies 1.5 ns Fall Time1 tf1 Measured between 2.0V and 0.8V; CL=30pF @ all operating frequencies 1.5 ns Output to Output Skew1 Tskew All outputs equally loaded, CL=20pF 250 ps Device to Device Skew1 Tdsk-Tdsk Measured at VDD/2 on the CLKOUT pins of devices 700 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 2 ICS9112-28 Preliminary Product Preview C N 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 α 0° 8° 0° 8° L INDEX AREA H E h x 45° 1 2 D α A A1 e B VARIATIONS N SEATING PLANE 8 D mm. MIN 4.80 MAX 5.00 D (inch) MIN MAX .1890 .1968 Reference Doc.: JEDEC Publication 95, MS-012 10-0030 .10 (.004) 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 3 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.