2305B-1HDCG8

Overview

The Renesas Electronics 2305B-1HDCG8 is a zero-delay clock buffer IC designed for high-speed clock distribution. It operates within a supply voltage range of 3V to 3.6V and supports maximum output frequencies up to 133 MHz. The device features one LVCMOS input and five LVCMOS outputs, packaged in an 8-SOIC (0.154 inch width) surface-mount package. It utilizes a proprietary low-jitter Phase Locked Loop (PLL) technique to achieve zero propagation delay between the input and output clocks. The component is characterized for industrial temperature ranges, ensuring reliable performance in demanding electronic environments.

Feature Summary

• Zero-delay PLL-based architecture aligns output phase with input clock
• Five LVCMOS outputs with low skew characteristics (<250 ps)
• Operates at frequencies from 10 MHz to 133 MHz
• Available in 8-pin SOIC package for surface mount applications

Applications

• SDRAM clock distribution
• Telecommunications equipment
• Datacom systems
• PC motherboards and workstations
• Critical path delay designs

Procurement Notes

Verify the exact suffix 'B' against official Renesas documentation, as standard listings often reference the 2305-1 series. Confirm RoHS compliance status and moisture sensitivity level (MSL 1) prior to ordering. Ensure the specific variant matches the required temperature grade and drive strength specifications for the target application.

Selection Notes

Select this component when zero propagation delay is critical for system timing integrity. The 2305B-1HDCG8 provides five buffered outputs suitable for driving multiple loads without external components. Consider the 3.3V operating voltage and LVCMOS compatibility when interfacing with other logic families. Verify that the 133 MHz maximum frequency meets the system's clock requirements.

Part Context

The 2305B-1HDCG8 belongs to the Renesas 2305 family of zero-delay buffers. This series is engineered to replace discrete buffering solutions by integrating PLL functionality on-chip. The 'H' designation typically indicates a high-drive version with faster rise and fall times compared to standard variants. The part is widely used in digital systems requiring precise clock synchronization across multiple nodes.

Replacement Considerations

Direct substitutes include the IDT2305-1HDCGI8 and 2305-1HDCGI8. These parts share identical pinouts and electrical characteristics. Verify package dimensions and thermal performance when transitioning between manufacturers or suffix variations.