621SDCGI

Overview

The Renesas 621SDCGI is a low skew clock buffer from the 621S series, designed for high-performance timing applications. It features a single input and four outputs, supporting frequencies up to 200 MHz. The device operates within a supply voltage range of 1.71 V to 3.465 V (typically 1.8 V to 3.3 V) and exhibits a maximum propagation delay of 4.5 ns with 50 fs RMS jitter. Packaged in an 8-VFQFN (2x2 mm) surface-mount format, it functions reliably across an industrial temperature range of -40°C to +105°C.

Feature Summary

• Low skew clock buffering with 50 fs RMS jitter specification
• Single-to-four output configuration supporting up to 200 MHz
• Wide supply voltage operation from 1.71 V to 3.465 V
• Compact 8-lead VFQFN package suitable for space-constrained designs

Applications

• High-speed data acquisition systems requiring precise clock distribution
• Industrial automation controllers needing low-jitter timing signals
• Communication infrastructure equipment utilizing multiple synchronized components

Procurement Notes

Verify the specific suffix 'GI' against the manufacturer's current datasheet to confirm the tube packaging variant, as other suffixes may indicate reel or cut tape options. Confirm RoHS compliance status directly with the supplier documentation prior to ordering. Check for any recent Product Change Notices (PCN) regarding material or marking updates that might affect integration timelines.

Selection Notes

Select this component when a single-ended input must be distributed to four loads with minimal skew and jitter under 50 fs RMS. Ensure the system power rail remains stable between 1.71 V and 3.465 V. Verify that the PCB layout supports the 2x2 mm VFQFN footprint and thermal requirements for operation up to 105°C ambient temperature.

Part Context

This part belongs to the Renesas 621S family of clock buffers, which are engineered for low-power, high-frequency signal integrity. The 621SDCGI specifically denotes the 4-output variant in a small form factor package, distinguishing it from other pinouts or output counts within the same series.

Replacement Considerations

The 621SCMGI8 is a functionally similar 1:4 clock buffer in the same series but utilizes a different package type. Cross-referencing the datasheet is required to ensure pin compatibility and electrical parameter alignment before substitution.