2305B-1DCGI

Overview

The Renesas Electronics 2305B-1DCGI 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 input and five outputs, packaged in an 8-SOIC format with a width of 3.90mm. 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 from -40°C to +85°C.

Feature Summary

• Zero Delay Buffer architecture aligns output phase with the input clock using on-chip PLL feedback.
• Supports LVCMOS/LVTTL input and CMOS/LVCMOS/TTL output types with 25 mA drive capability.
• Low skew performance with device-to-device skew less than 700 ps and output skew under 250 ps.
• Operates at 3.3V core voltage with power dissipation rated at 700 mW.

Applications

• High-speed clock distribution in networking equipment.
• Clock synchronization in server and high-performance computing systems.
• NVMe storage controller interfaces requiring low jitter.
• Industrial control systems operating in extended temperature environments.

Procurement Notes

Verify the specific suffix 'I' indicates the industrial temperature grade (-40°C to +85°C). Confirm the package type is SOIC-8. Check RoHS compliance status as per current manufacturer documentation. Ensure the ordering part number matches the exact electrical specifications required for the design.

Selection Notes

Select this component when zero propagation delay is critical for system timing. Compare against the standard 2305-1 series if commercial temperature range (0°C to 70°C) suffices. Consider the 2305-1H variant if higher drive strength or faster rise/fall times are needed. Verify input signal compatibility with LVTTL levels.

Part Context

This part belongs to the IDT 2305 family of zero-delay buffers, now manufactured by Renesas Electronics following the Integrated Device Technology acquisition. It serves as a direct replacement for legacy IDT2305-1DCGI parts. The 'B' designation typically denotes specific pinout or feature variations within the broader 2305 product line compared to the base 2305-1 model.

Replacement Considerations

IDT2305-1DCGI is a confirmed alternate part number for this component. Users transitioning from older IDT-branded inventory should verify that the Renesas version maintains identical electrical characteristics and pinout compatibility.