MPC940LFAR2

Overview

The MPC940LFAR2 is a low voltage 1:18 clock distribution chip designed for synchronous systems. It accepts either differential LVPECL or LVCMOS compatible inputs and provides 18 LVCMOS outputs with selectable 2.5V or 3.3V drive capabilities. The device supports maximum input frequencies up to 250 MHz, featuring output-to-output skews of 150 ps. It operates on dual or single supply voltages (2.5V or 3.3V) within an ambient temperature range of 0°C to 70°C. Packaged in a 32-lead LQFP, it is suitable for Intel CPU server applications.

Feature Summary

• 1:18 Clock Distribution with selectable LVPECL or LVCMOS inputs
• LVCMOS Outputs supporting 2.5V or 3.3V logic levels
• Maximum Output Frequency of 250 MHz
• Low Output-to-Output Skew of 150 ps

Applications

• Intel CPU Servers
• High performance microprocessor based designs
• Demanding synchronous systems

Procurement Notes

Verify the specific ordering suffix 'R2' against official documentation to confirm reel packaging details. Confirm that the 0°C to 70°C commercial temperature range meets system requirements, as industrial variants may differ. Ensure the 32-LQFP footprint matches the PCB layout specifications.

Selection Notes

Select this component when a 1:18 fanout is required with mixed input compatibility. Choose between 2.5V or 3.3V output configurations based on downstream load requirements. Verify that the 150 ps skew specification satisfies timing constraints for the target synchronous bus architecture.

Part Context

This part belongs to the MPC940L family of low voltage clock distribution chips originally developed by Motorola/Freescale. The MPC940LFA variant serves as a similar device offering comparable functionality within the same product line.

Replacement Considerations

The MPC940LFA is identified as a similar device within the same product family. Verify pinout and electrical parameter compatibility before substitution.