MPC9772FA

Overview

The MPC9772FA is a 3.3V LVCMOS PLL clock generator designed for low-skew distribution in networking and telecom applications. It provides up to 12 outputs with frequencies reaching 240 MHz and output skew under 250 ps. The device supports external feedback for zero-delay buffering, features an internal power-on reset, and includes individual serial clock stop circuitry for power management. Packaged in a 52-lead LQFP (Case 848D), it operates within an ambient temperature range of –40°C to +85°C.

Feature Summary

• Generates 12 LVCMOS clock outputs with maximum frequency of 240 MHz and output skew less than 250 ps.
• Supports zero-delay buffer configuration via external PLL feedback connection from QFB to FB_IN.
• Includes individual serial clock stop circuitry allowing software-controlled disabling of specific outputs.
• Features two alternative LVCMOS reference inputs (CCLK0, CCLK1) and an on-chip crystal oscillator interface.

Applications

• High-performance networking equipment requiring precise clock distribution.
• Telecommunications systems utilizing mid-range to high-speed data processing.
• Computing platforms needing low-skew clock signals for synchronous logic.

Procurement Notes

Verify the component status as discontinued or obsolete through official manufacturer channels before design implementation. Confirm that the 52-LQFP package dimensions match the Case 848D specification. Ensure supply chain sources provide valid traceability documentation for this legacy part number.

Selection Notes

Select the MPC9772FA when a 1:12 fanout with LVCMOS levels is required at frequencies up to 240 MHz. The device is suitable for designs needing zero-delay buffering capabilities. Verify that the system power supply can support the isolated VCC_PLL pin requirements, typically necessitating an RC filter for noise attenuation above 100 kHz.

Part Context

The MPC9772FA belongs to the MPC97xx family of clock generators originally manufactured by Motorola Semiconductor and later Freescale Semiconductor. It is functionally compatible with the MPC972. The 'FA' suffix specifically denotes the 52-lead LQFP package variant (Case 848D).

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Designers should consult current NXP or Renesas portfolios for modern equivalents offering similar 1:12 LVCMOS fanout and zero-delay capabilities.