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MPC940L

Part Number	MPC940L
Manufacturer	Renesas
Description	LOW VOLTAGE 1:18 CLOCK DISTRIBUTION CHIP
Published	Jan 14, 2024
Detailed Description	LOW VOLTAGE 1:18 CLOCK DISTRIBUTION CHIP MPC940L DATASHEET OBSOLETE The MPC940L is a 1:18 low voltage clock distribut...
Datasheet	MPC940L PDF File

Overview

LOW VOLTAGE 1:18 CLOCK DISTRIBUTION CHIP MPC940L DATASHEET OBSOLETE The MPC940L is a 1:18 low voltage clock distribution chip with 2.
5 V or 3.
3 V LVCMOS output capabilities.
The device features the capability to select either a differential LVPECL or an LVCMOS compatible input.
The 18 outputs are 2.
5 V or 3.
3 V LVCMOS compatible and feature the drive strength to drive 50  series or parallel terminated transmission lines.
With output-to-output skews of 150 ps, the MPC940L is ideal as a clock distribution chip for the most demanding of synchronous systems.
The 2.
5 V outputs also make the device ideal for supplying clocks for a high performance microprocessor based design.
For a similar device at a lower price/performance point, the reader is referred to the MPC9109.
• LVPECL or LVCMOS Clock Input • 2.
5 V LVCMOS Outputs for Pentium II Microprocessor Support • 150 ps Maximum Output-to-Output Skew • Maximum Output Frequency of 250 MHz • 32-Lead LQFP Packaging, Pb-Free • Dual or Single Supply Device: • Dual VCC Supply Voltage, 3.
3 V Core and 2.
5 V Output • Single 3.
3 V VCC Supply Voltage for 3.
3 V Outputs • Single 2.
5 V VCC Supply Voltage for 2.
5 V I/O • For drop in replacement use 83940DYLF MPC940L LOW VOLTAGE 1:18 CLOCK DISTRIBUTION CHIP AC SUFFIX 32-LEAD LQFP PACKAGE Pb-FREE PACKAGE CASE 873A-04 With a low output impedance (20 ), in both the HIGH and LOW logic states, the output buffers of the MPC940L are ideal for driving series terminated transmission lines.
With a 20  output impedance the 940L has the capability of driving two series terminated lines from each output.
This gives the device an effective fanout of 1:36.
If a lower output impedance is desired please see the MPC942 data sheet.
The differential LVPECL inputs of the MPC940L allow the device to interface directly with a LVPECL fanout buffer like the MC100EP111 to build very wide clock fanout trees or to couple to a high frequency clock source.
The LVCMOS input provides a more standard interface fo...

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