MPC942C Motorola, MPC942C Datasheet

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MPC942C

Manufacturer Part Number
MPC942C
Description
Low Voltage 1:18 Clock Distribution Chlp
Manufacturer
Motorola
Datasheet

Specifications of MPC942C

Case
QFP

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Low Voltage 1:18 Clock
Distribution Chip
3.3V LVCMOS output capabilities. The device is offered in two versions;
the MPC942C has an LVCMOS input clock while the MPC942P has a
LVPECL input clock. The 18 outputs are 2.5V or 3.3V LVCMOS
compatible and feature the drive strength to drive 50
terminated transmission lines. With output–to–output skews of 200ps, the
MPC942 is ideal as a clock distribution chip for the most demanding of
synchronous systems. The 2.5V outputs also make the device ideal for
supplying clocks for a high performance Pentium II
based design.
states, the output buffers of the MPC942 are ideal for driving series
terminated transmission lines. With an output impedance of 12
MPC942 can drive two series terminated transmission lines from each
output. This capability gives the MPC942 an effective fanout of 1:36. The
MPC942 provides enough copies of low skew clocks for most high
performance synchronous systems.
into a high impedance state. The OE pin has an internal pullup resistor.
chosen to optimize performance, board space and cost of the device. The 32–lead TQFP has a 7x7mm body size with a
conservative 0.8mm pin spacing.
Pentium II is a trademark of Intel Corporation.
02/01
MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Motorola, Inc. 2001
LVCMOS/LVTTL Clock Input
2.5V LVCMOS Outputs for Pentium II Microprocessor Support
150ps Maximum Targeted Output–to–Output Skew
Maximum Output Frequency of 250MHz @ 3.3 V CC
32–Lead TQFP Packaging
Single 3.3V or 2.5V Supply
The MPC942 is a 1:18 low voltage clock distribution chip with 2.5V or
With a low output impedance ( 12 ), in both the HIGH and LOW logic
The LVCMOS/LVTTL input of the MPC942C provides a more standard LVCMOS interface. The OE pins will place the outputs
The MPC942 is a single supply device. The V CC power pins require either 2.5V or 3.3V. The 32–lead TQFP package was
1
series or parallel
microprocessor
the
REV 0
DISTRIBUTION CHIP
32–LEAD TQFP PACKAGE
MPC942C
LOW VOLTAGE
1:18 CLOCK
CASE 873A–02
FA SUFFIX
Order this document
by MPC942C/D

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MPC942C Summary of contents

Page 1

... MPC942 provides enough copies of low skew clocks for most high performance synchronous systems. The LVCMOS/LVTTL input of the MPC942C provides a more standard LVCMOS interface. The OE pins will place the outputs into a high impedance state. The OE pin has an internal pullup resistor. The MPC942 is a single supply device. The V CC power pins require either 2.5V or 3.3V. The 32–lead TQFP package was chosen to optimize performance, board space and cost of the device. The 32– ...

Page 2

... MPC942C LOGIC DIAGRAM MPC942C Block Diagram LVCMOS_CLK OE (Int. Pullup) GND VCC ABSOLUTE MAXIMUM RATING Symbol Parameter V CC Supply Voltage V I Input Voltage I IN Input Current T Stor Storage Temperature Range Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. “ ...

Page 3

... V CCI V 0.8 V 2.4 V 0.5 V 200 A 4 0.5 mA Min Typ Max Unit 250 MHz 1.3 2.3 ns 200 ps 1.0 ns 500 0.2 1 MPC942C Condition – Per Output Condition Notes 1, 2 Notes 1, 3 Condition – Per Output Condition Note 1 Notes 1, 2 Notes 1, 3 MOTOROLA ...

Page 4

... BSC 0.150 0.250 0.006 0.010 S 9.000 BSC 0.354 BSC S1 4.500 BSC 0.177 BSC V 9.000 BSC 0.354 BSC V1 4.500 BSC 0.177 BSC W 0.200 REF 0.008 REF X 1.000 REF 0.039 REF Mfax is a trademark of Motorola, Inc. MPC942C/D TIMING SOLUTIONS DL207 — Rev 0 ...

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