ics9169a-70 Integrated Device Technology, ics9169a-70 Datasheet

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ics9169a-70

Manufacturer Part Number
ics9169a-70
Description
Frequency Generator For Workstation Systems
Manufacturer
Integrated Device Technology
Datasheet
General Description
The ICS9169A-70 is a low-cost frequency generator designed
specifically for workstation or PC system clocks. The
integrated buffer minimizes skew and provides all the clocks
required. A 14.318 MHz XTAL oscillator provides the
reference clock to generate standard Pentium frequencies.
The CPU clock makes gradual frequency transitions without
violating the PLL timing of internal microprocessor clock
multipliers.
Frequency Generator for Workstation Systems
Block Diagram
9169A-70 Rev B 2/14/01
Integrated
Circuit
Systems, Inc.
ICS reserves the right to make changes in the device data identified in this
publication without further notice. ICS advises its customers to obtain the latest
version of all device data to verify that any information being relied upon by the
customer is current and accurate.
Features
9 PCI outputs selectable from 30 to 66.6MHz
3 SCSI outputs, selectable from 10 to 80MHz
500ps skew window for all synchronous clock edges
Integrated buffer outputs drive up to 30pF loads
500ps output to output skew window
Buffers drive 30pF loads nominally 0.8V/ns skew rate
3.0V - 3.7Vsupply range
32-pin SOIC package
48 MHz clock for USB support and 24 MHz clock
for FD
Pin Configuration
32-Pin SOIC
ICS9169A-70

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ics9169a-70 Summary of contents

Page 1

... Circuit Systems, Inc. Frequency Generator for Workstation Systems General Description The ICS9169A- low-cost frequency generator designed specifically for workstation or PC system clocks. The integrated buffer minimizes skew and provides all the clocks required. A 14.318 MHz XTAL oscillator provides the reference clock to generate standard Pentium frequencies. ...

Page 2

... ICS9169A-70 Pin Descriptions ...

Page 3

... ICS9169A-70 ...

Page 4

... ICS9169A-70 Absolute Maximum Ratings Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . 7.0 V Logic Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . GND –0 Ambient Operating Temperature . . . . . . . . . . . . 0°C to +70°C Storage Temperature . . . . . . . . . . . . . . . . . . . . . . –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 ...

Page 5

... CONDITIONS ICS9169A-70 MIN TYP MAX UNITS 2.4 2.9 V 0.3 0.4 V -43.0 23.0 mA 20.0 31.0 mA 0.7 1.5 nS 0.6 1 -250 - 250 pS - 200 300 150 pS -700 - 700 -400 ...

Page 6

... ICS9169A-70 General Layout Precautions: 1) Use a ground plane on the top layer of the PCB in all areas not used by traces. 2) Make all power traces and vias as wide as possible to lower inductance. Notes: 1 All clock outputs should have series terminating resistor. Not shown in all places to improve readibility of ...

Page 7

... ICS reserves the right to make changes in the device data identified in this 7 publication without further notice. ICS advises its customers to obtain the latest version of all device data to verify that any information being relied upon by the customer is current and accurate. ICS9169A- ...

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