621MLF

Overview

The Renesas Electronics Corporation 621MLF is a low skew clock buffer and fan-out device featuring a 1:4 input-to-output ratio. It operates within a supply voltage range of 1.14 V to 1.89 V and supports maximum input and output frequencies up to 200 MHz. The component exhibits a maximum propagation delay of 5 ns and draws approximately 50 mA of operating current. Packaged in an 8-SOIC (0.154 inch width) surface-mount format, it functions across an industrial temperature range of -40°C to +85°C. This integrated circuit is designed for precise clock distribution applications requiring low jitter performance.

Feature Summary

• 1:4 Fan-Out Clock Buffer with Low Skew characteristics
• Maximum Operating Frequency of 200 MHz
• Supply Voltage Range: 1.14 V to 1.89 V
• 8-SOIC Surface-Mount Package

Applications

• Clock distribution networks
• Fan-out buffering for digital systems
• Low skew timing alignment

Procurement Notes

The 621MLF is classified as obsolete and no longer manufactured by Renesas Electronics. Availability is restricted to existing market inventory or surplus stock. Verification of part authenticity and condition is critical when sourcing from third-party distributors. Designers should initiate replacement strategies immediately due to the discontinuation status.

Selection Notes

Engineers selecting this component must account for its discontinued status. The 621SDCGI is identified as a similar alternative within the Renesas portfolio. Selection requires confirmation that the legacy specifications meet the design requirements without access to new production units. Supply chain risk assessment is necessary for long-term viability.

Part Context

The 621MLF belongs to the 621M family of clock buffers produced by Renesas Electronics. It serves as a successor or variant to earlier ICS branded parts, specifically related to the ICS621 series. The device is categorized under Clock & Timer ICs, specifically Clock Buffers, providing signal integrity solutions for high-speed digital interfaces.

Replacement Considerations

The 621SDCGI is listed as a similar replacement option by Renesas Electronics.