23S09T-1DCG8

Overview

The Renesas 23S09T-1DCG8 is a high-speed phase-locked loop (PLL) clock buffer designed for zero-delay clock distribution. It accepts one reference input and drives nine outputs, organized into two banks of four and one bank of five. The device operates within a frequency range of 10MHz to 133MHz at a 3.3V supply voltage. Key electrical parameters include an output skew of less than 250ps and cycle-to-cycle jitter below 200ps. The -1H suffix indicates a high-drive version with faster rise and fall times compared to the standard -1 variant. It features separate output enables for each bank and enters a low-power tri-state mode when no input clock is present.

Feature Summary

• Zero-delay PLL architecture aligns output phase with the incoming reference clock
• Distributes one input to nine outputs across two distinct enableable banks
• Low jitter performance with cycle-to-cycle jitter under 200ps
• Spread spectrum compatible for EMI reduction applications

Applications

• High-speed clock distribution in data communication systems
• Clock buffering for computer servers and telecommunications equipment
• System-level timing synchronization in embedded platforms

Procurement Notes

Verify the specific suffix 'T' against official Renesas documentation, as it may indicate tape-and-reel packaging or a specific moisture sensitivity level. Confirm RoHS compliance status, as older variants of this family have been noted as non-compliant in some distributor records. Check for active manufacturing status, as certain versions of the 23S09 family have reached end-of-life.

Selection Notes

Select the -1H variant over the standard -1 if higher drive strength and faster edge rates are required for signal integrity at 133MHz. Ensure the design supports the 3.3V VDD operating range. Verify that the PCB layout accommodates the SOIC-16 package dimensions (9.9 x 3.9 x 1.5 mm) and pitch requirements.

Part Context

The 23S09 series is part of Renesas' zero-delay buffer lineup, serving as a 16-pin expansion of the 23S05. It utilizes on-chip PLL feedback from the CLKOUT pad to lock to the REF pin input. This family is characterized for both commercial (0°C to 70°C) and industrial (-40°C to 85°C) temperature ranges, providing flexibility for various environmental conditions.

Replacement Considerations

The IDT23S09-1HPG8 is a documented equivalent offering similar zero-delay buffering in a TSSOP package. Note that the IDT variant has been marked as obsolete in some sources; verify current availability and RoHS status before substitution.