2305A-1HDCG

Overview

The Renesas Electronics Corporation 2305A-1HDCG is a zero-delay clock buffer IC designed for high-speed clock distribution. It operates within a frequency range of 10 MHz to 133 MHz and accepts an LVCMOS input signal. The device provides five low-skew outputs with a maximum skew of 250 ps and cycle-to-cycle jitter under 200 ps. Powered by a single 3.3 V supply (3 V to 3.6 V), it features on-chip PLL feedback and supports tri-state mode for board-level testing. Packaged in an 8-pin SOIC, it is available in commercial (0°C to 70°C) and industrial (-40°C to 85°C) temperature grades.

Feature Summary

• Zero-delay operation aligns output phase with the incoming reference clock via an internal PLL.
• Five LVCMOS outputs provide up to 25 mA drive capability at TTL levels.
• Low skew performance ensures output skew is less than 250 ps.
• Supports tri-state mode and stop-at-low functionality for system testing.

Applications

• SDRAM clock distribution
• Telecommunications equipment
• Datacom systems
• PC motherboards and workstations

Procurement Notes

Verify the specific suffix against the datasheet to confirm the operating temperature range and package variant. The 'C' suffix typically denotes the commercial grade (0°C to 70°C), while 'I' indicates the industrial grade (-40°C to 85°C). Confirm the exact ordering part number matches the required thermal specification before procurement.

Selection Notes

Select this component when a low-jitter, zero-delay buffer is needed for distributing a single clock source to multiple synchronous loads. Ensure the input clock frequency falls between 10 MHz and 133 MHz. Verify that the 5-output configuration meets the system requirements; if more outputs are needed, consider the 16-pin 2309A series instead.

Part Context

This part belongs to the IDT 2305A family of zero-delay buffers, which were originally developed by Integrated Device Technology (IDT) and are now manufactured by Renesas Electronics. The 2305A serves as a foundational component for clock generation and distribution in digital logic circuits requiring precise timing alignment.

Replacement Considerations

Direct replacements include other members of the 2305A family, such as the 2305A-1HDCG (high drive version) or the 2305A-1DCGI (industrial temperature grade). Cross-referencing pinouts and electrical characteristics with the original datasheet is essential for compatibility.