ZL40234LDF1

Overview

The ZL40234LDF1 is a clock fanout buffer from the miSmartBuffer series by Microchip Technology. It features one differential input and five outputs: three LVPECL/LVDS/HCSL configurable outputs and two LVCMOS outputs. The device supports maximum input frequencies up to 1.6 GHz and output frequencies up to 1.035 GHz. It operates within a supply voltage range of 1.71 V to 3.465 V and functions across an industrial temperature range of -40°C to +85°C. Packaged in a 32-VFQFN exposed pad, it delivers low skew and low additive jitter performance.

Feature Summary

• Configurable output types including LVPECL, LVDS, HCSL, and LVCMOS
• Low skew and low additive jitter characteristics
• Supports high-frequency operation up to 1.6 GHz input

Applications

• High-speed data acquisition systems
• Telecommunications infrastructure
• Test and measurement equipment
• Industrial automation control systems

Procurement Notes

Verify the specific suffix LDF1 indicates tape and reel packaging with a factory quantity of 4000 units. Confirm the 32-VFQFN package type matches the target PCB footprint. Ensure the operating temperature range meets system requirements. Check RoHS compliance status before integration. Validate that the miSmartBuffer series compatibility aligns with existing design constraints.

Selection Notes

Choose this component when a single differential clock source requires distribution to multiple heterogeneous logic families. The mix of three high-speed differential outputs and two LVCMOS outputs reduces bill-of-materials complexity. Consider the low jitter specification for sensitive analog-to-digital converter interfaces. Evaluate the 32-pin QFN package for space-constrained designs requiring surface-mount assembly.

Part Context

This part belongs to the ZL402x family of clock fanout buffers, which includes variants like ZL40230, ZL40231, ZL40235, ZL40240, and ZL40241. These devices are designed to work with miClockSynth synthesizers to create complete clock trees. The ZL40234 specifically offers a 1:5 ratio with mixed output types, distinguishing it from pure LVPECL or LVDS only counterparts in the same series.

Replacement Considerations

Public confirmed substitute part numbers include ZL40234LDG1, which shares identical electrical specifications but differs in packaging format.