MPC961CFA

Overview

The MPC961C is a 2.5V or 3.3V compatible, 1:18 PLL-based zero-delay buffer designed for demanding clock tree applications. It features fully integrated PLL circuitry with LVCMOS outputs capable of frequencies up to 200MHz. The device provides output skews of 150ps and cycle-to-cycle jitter of ±50ps RMS. It accepts an LVCMOS reference clock via the CCLK pin and requires an external RC filter on the VCCA analog power supply pin. Packaged in a 32-lead LQFP (CASE 873A-02), it supports series or parallel terminated transmission lines.

Feature Summary

• Fully integrated PLL with LVCMOS outputs supporting up to 200MHz frequency
• Zero-delay buffering capability with 150ps maximum output skew
• ±50ps RMS cycle-to-cycle jitter performance
• Compatible with 2.5V and 3.3V logic levels

Applications

• Nested clock trees requiring low insertion delay
• LVCMOS PLL fanout buffers
• High-speed point-to-point signal distribution

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current product status. Confirm that the required external RC filter components for the VCCA pin are included in the system design. Ensure the PCB layout accommodates the 32-lead LQFP package dimensions specified in CASE 873A-02.

Selection Notes

Select the MPC961C when an LVCMOS reference clock input is required; the MPC961P variant utilizes an LVPECL reference. Designers must account for the separate VCCA power supply requirement and implement the recommended filtering to isolate analog PLL noise from digital switching activity.

Part Context

Originally manufactured by Motorola Semiconductor Products Inc., this component was later transitioned to Freescale Semiconductor following corporate restructuring. The datasheet DL207 documents the technical specifications for this timing solution within the broader portfolio of clock distribution devices.

Replacement Considerations

The MPC961P serves as a functional alternative within the same family but utilizes an LVPECL reference clock input instead of LVCMOS. Verify interface compatibility before substitution.