MPC9239FN

Overview

The MPC9239FN is a 3.3 V compatible, PLL-based clock synthesizer designed for high-performance telecom, networking, and computing applications. It generates differential LVPECL output signals with frequencies ranging from 3.125 MHz to 900 MHz. The device features an on-chip crystal oscillator or alternative LVCMOS reference input, fully integrated PLL, and minimal frequency overshoot. It supports serial 3-wire and parallel programming interfaces. Operating within an ambient temperature range of 0 °C to +70°C, it utilizes SiGe technology and is available in 28-lead PLCC (FN suffix) and 32-lead LQFP packages.

Feature Summary

• Differential LVPECL output signals with frequencies up to 900 MHz
• On-chip crystal oscillator for reference frequency generation
• Fully integrated PLL with separate analog power supply (VCC_PLL)
• Serial 3-wire and parallel programming interfaces for divider configuration

Applications

• High-performance telecom equipment
• Networking infrastructure devices
• Computing system clock generation

Procurement Notes

Verify the specific package suffix against the datasheet: FN indicates a 28-lead PLCC package, while FA indicates a 32-lead LQFP package. Confirm that the ordering suffix corresponds to the required physical form factor and lead type. Ensure compatibility with the 3.3 V power supply requirements and LVCMOS control logic levels specified in the electrical characteristics.

Selection Notes

Select the MPC9239FN when a 3.3 V compatible clock synthesizer with differential LVPECL outputs is required. The device supports output frequencies from 3.125 MHz to 900 MHz using a 10–20 MHz reference. Consider the 28-lead PLCC package for space-constrained designs requiring this specific footprint. Ensure the application environment operates within the 0 °C to +70°C temperature range.

Part Context

The MPC9239 is part of Freescale Semiconductor's Advanced Clock Drivers Devices family. It is pin and function compatible with the MC12439. The device is manufactured using SiGe technology to achieve low jitter performance and high-speed operation suitable for demanding digital systems.

Replacement Considerations

The MPC9239 is pin and function compatible with the MC12439. Verify that any substitute component matches the LVPECL output voltage levels and the 3.3 V supply requirement.