MPC9229FN

Overview

The MPC9229FN is a 400 MHz low voltage PECL clock synthesizer manufactured by NXP USA Inc. (formerly Motorola/Freescale). It operates on a single 3.3V supply and features a fully integrated PLL with an internal crystal oscillator. The device generates differential LVPECL outputs ranging from 25 MHz to 400 MHz using SiGe technology. It supports both serial 3-wire and parallel programming interfaces for configuring the M and N dividers. The component is housed in a 28-lead PLCC package (FN suffix) and functions within an ambient temperature range of 0°C to +70°C.

Feature Summary

• Differential LVPECL output signals with frequencies up to 400 MHz
• Integrated on-chip crystal oscillator and fully integrated PLL
• Dual configuration via serial 3-wire interface or parallel inputs
• SiGe technology with separate VCC and VCC_PLL power supplies

Applications

• High-performance telecom equipment clock generation
• Networking infrastructure timing solutions
• Computing system clock distribution

Procurement Notes

Verify the FN suffix confirms the 28-lead PLCC package variant. Confirm the manufacturer lineage as NXP USA Inc., noting prior branding as Motorola or Freescale Semiconductor in technical documentation. Ensure the operating temperature grade matches the 0°C to +70°C specification required for the application environment.

Selection Notes

Select this component when a 400 MHz synthesized clock with differential PECL outputs is required. The device requires an external series-resonant quartz crystal connected to XTAL_IN and XTAL_OUT pins. Designers must account for the separate VCC_PLL analog supply pin, which requires specific filtering to minimize jitter. The parallel interface offers priority over the serial interface for power-up configuration.

Part Context

This part belongs to the MPC9229 family of clock synthesizers. It is functionally and pin-compatible with the MC12429. The FN suffix specifically denotes the 28-lead Plastic Leadless Chip Carrier (PLCC) package, distinct from the FA suffix which indicates a 32-lead LQFP package. The device utilizes SiGe technology for high-speed performance.

Replacement Considerations

The MC12429 is confirmed as a pin and function compatible substitute. Other MPC9229 variants exist with different packages (e.g., MPC9229FA for LQFP) or temperature ranges (e.g., MPC9229AC), requiring verification of package and thermal specifications before substitution.