621MILFT

Overview

The Renesas Electronics 621MILFT is a low skew 1:4 clock buffer designed for high-speed digital applications. It operates within a supply voltage range of 1.14 V to 1.89 V and supports maximum input and output frequencies of 200 MHz. The device features a maximum propagation delay of 5 ns and draws 50 mA of operating current. Packaged in an SOIC-8 surface-mount format, it functions reliably across an industrial temperature range from -40°C to +85°C. This component belongs to the 621MILF series and serves as a fan-out buffer for distributing clock signals with minimal jitter.

Feature Summary

• Low skew 1:4 clock distribution architecture
• Maximum operating frequency of 200 MHz
• Supply voltage range of 1.14 V to 1.89 V
• SOIC-8 surface mount package

Applications

• High-speed data acquisition systems
• Telecommunications equipment clock distribution
• Industrial control system timing networks

Procurement Notes

The 621MILFT is officially listed as obsolete by Renesas Electronics. Availability is restricted to existing stock or surplus channels. Verification of RoHS compliance status and specific lot dates is required due to the end-of-life designation. Buyers should confirm the authenticity of sources offering this discontinued part number.

Selection Notes

Designers requiring active components should consider the 621SDCGI as a similar alternative within the Renesas portfolio. Selection must account for the 1.14 V to 1.89 V supply constraint, which differs from standard 3.3 V or 5 V logic families. The SOIC-8 footprint compatibility should be verified against existing PCB layouts.

Part Context

This component is part of the broader 621M family of clock buffers. It shares the base model identifier 621M but includes specific suffixes indicating package type (LFT for tape and reel) and performance grade. It is distinct from the 551 series, which operates at higher voltages and lower frequencies.

Replacement Considerations

The 621SDCGI is identified as a similar replacement option by distributors.