2309-1HDCG8

Overview

The Renesas 2309-1HDCG8 is a zero-delay clock buffer IC designed for high-speed clock distribution. It accepts a single LVTTL input and provides nine LVTTL outputs, operating at frequencies up to 133 MHz with a 3V to 3.6V supply voltage. The device utilizes an on-chip PLL to align output phase with the input reference, achieving low skew and jitter characteristics. Packaged in a 16-pin SOIC (0.154 inch width) format, it supports surface-mount installation. The component operates within a commercial temperature range of 0°C to +70°C and includes features such as separate output enable controls for different output banks.

Feature Summary

• Zero-delay buffer architecture using internal PLL feedback from CLKOUT pad
• 1:9 input-to-output ratio distributing one reference to nine LVTTL outputs
• Low skew performance (< 250ps) and cycle-to-cycle jitter (< 200 ps)
• Operates at 3.3V with frequency range from 10 MHz to 133 MHz

Applications

• High-speed clock distribution in digital systems
• Buffering reference clocks for high-frequency logic components
• System synchronization where phase alignment between input and multiple outputs is required

Procurement Notes

Verify the specific suffix '8' indicates tape-and-reel packaging when sourcing, as standard 'G' suffixes often denote tube packaging. Confirm RoHS compliance status and moisture sensitivity level (MSL 3) requirements against assembly timelines. Cross-reference manufacturer part numbers with distributor codes to ensure exact package dimension matching.

Selection Notes

Select this component when a single clock source must drive nine loads with minimal skew. Ensure the system operates within the 3V to 3.6V VDD range. Verify that LVTTL input/output levels match the connected circuitry. Consider the 16-SOIC package constraints for PCB layout if space is limited compared to TSSOP alternatives.

Part Context

This part belongs to the IDT/Renesas 2309 series of zero-delay buffers. The '1H' designation typically signifies a high-drive version with faster rise/fall times compared to standard variants. The '2309-1' base model provides nine outputs, distinguishing it from lower-output counterparts like the 2305A. The device integrates the PLL loop filter internally, eliminating external RC networks.

Replacement Considerations

Publicly documented substitutes include PL123-09SC-R from Microchip Technology. Other potential replacements in the family include the 2309NZ series or NB2309AI1DR2G from onsemi, though pinout and electrical specifications should be verified against the original datasheet.