ZL40202LDG1

Overview

The ZL40202LDG1 is a clock buffer manufactured by Microchip Technology, designed for high-speed signal distribution. It functions as a 1:4 LVPECL fanout buffer with external termination capabilities. The device supports a maximum input frequency of 750 MHz and exhibits a maximum propagation delay of 2 ns. It operates within a supply voltage range of 2.375 V to 3.465 V and is rated for an industrial temperature range from -40°C to +85°C. The component is housed in a QFN-16 surface-mount package.

Feature Summary

• 1:4 LVPECL fanout buffer configuration
• Maximum operating frequency of 750 MHz
• External termination support for impedance matching
• QFN-16 surface-mount package

Applications

• High-speed digital signal distribution systems
• Clock tree generation in communication equipment
• Data acquisition systems requiring low jitter buffering

Procurement Notes

Verify the specific suffix 'DG1' against the manufacturer's current datasheet to confirm pinout and electrical specifications, as suffixes can indicate variations in packaging or material compliance. Ensure compatibility with LVPECL logic levels and verify that the QFN-16 thermal pad requirements are met in the PCB layout design.

Selection Notes

Select this component when a single differential LVPECL clock source needs to drive four downstream loads. Confirm that the system power supply provides a stable voltage between 2.375 V and 3.465 V. Consider the 2 ns propagation delay and 750 MHz frequency limit to ensure timing integrity for the target application speed.

Part Context

This part belongs to the ZL402xx series of clock buffers from Microchip Technology. These devices are engineered for low skew and low additive jitter performance, making them suitable for precision timing applications. The ZL40202 variant specifically offers a 1:4 split ratio with LVPECL outputs.

Replacement Considerations

Direct replacements must match the 1:4 LVPECL output configuration, QFN-16 package, and 750 MHz frequency rating. Verify pin-to-pin compatibility and electrical parameters such as supply voltage range and propagation delay before substitution.