MPC9239EI

Overview

The MPC9239EI is a PLL-based clock synthesizer designed for high-performance clock generation. It operates within a supply voltage range of 3.135V to 3.465V and supports synthesized clock output signals from 3.125 MHz to 900 MHz. The device features differential LVPECL outputs and LVCMOS compatible control inputs. It includes an on-chip crystal oscillator and utilizes a 2:1 input-to-output frequency ratio. The maximum peak-to-peak jitter is specified at 160 ps. The component is housed in a 28-pin PLCC package.

Feature Summary

• Generates differential LVPECL clock signals with low jitter performance
• Integrates an on-chip crystal oscillator for simplified design
• Supports programmable clock frequencies up to 900 MHz
• Features LVCMOS compatible control inputs for easy interfacing

Applications

• High-performance clock generation systems
• Data communication equipment requiring precise timing
• Network infrastructure components
• Test and measurement instruments

Procurement Notes

Verify the specific suffix (e.g., EI, FNR2) against official Renesas documentation to confirm package type and availability status. Note that certain variants may be discontinued or have limited distribution. Ensure compatibility with system voltage requirements of 3.135V to 3.465V before procurement. Cross-reference datasheet revisions to confirm electrical characteristics match application needs.

Selection Notes

Select this component when differential LVPECL outputs are required for high-speed data transmission. Consider the 160 ps jitter specification for signal integrity requirements. Verify that the 28-pin PLCC package fits the PCB layout constraints. Ensure the input frequency range aligns with the available reference clock source. Evaluate thermal management needs for surface mount installation.

Part Context

The MPC9239 series belongs to Renesas' family of clock synthesizers targeting mid-range to high-performance applications. These devices are engineered to provide stable clock signals for digital systems. The MPC9239EI specifically offers a robust solution for generating precise timing references in complex electronic architectures requiring low phase noise.

Replacement Considerations

Check for direct pin-compatible substitutes within the MPC9239 family, such as the MPC9239FNR2, noting differences in packaging and availability. Verify if alternative clock synthesizers from other manufacturers meet the LVPECL output and jitter specifications. Confirm that any replacement maintains the same supply voltage and control interface compatibility.