621NLFT

Overview

The Renesas Electronics Corporation 621NLFT 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 a typical operating current of 50 mA. Designed for surface mount applications, it is housed in an 8-VFQFPN (2x2) package with exposed pads. The device functions reliably across an industrial temperature range from 0°C to +70°C.

Feature Summary

• 1:4 Clock Fan-Out Buffer
• Maximum Frequency: 200 MHz
• Supply Voltage: 1.14 V to 1.89 V
• Package: 8-VFQFPN Exposed Pad

Applications

• High-speed digital signal processing systems
• Telecommunications equipment clock distribution
• Industrial control system timing networks

Procurement Notes

The 621NLFT is classified as obsolete and no longer manufactured by Renesas Electronics. Availability is restricted to existing stock held by distributors. Verification of authenticity and storage history is critical due to the end-of-life status. Buyers should confirm lead times and minimum order quantities directly with suppliers before procurement.

Selection Notes

Engineers replacing this component must account for its discontinued status. Alternative solutions require evaluation of pin compatibility, electrical specifications, and package dimensions. The 621SCMGI8 is identified as a potential substitute within the manufacturer's portfolio, though functional equivalence must be validated against specific design requirements.

Part Context

This component belongs to the ICS621 series of low skew clock buffers originally developed by Integrated Circuit Systems (ICS), now part of Renesas Electronics. The 'NLFT' suffix denotes the specific 8-pin VFQFPN package variant with lead-free termination. The series was widely used for distributing reference clocks in high-performance computing and networking infrastructure.

Replacement Considerations

The 621SCMGI8 is listed as a replacement option. Verify package footprint and electrical parameters against the original design specifications.