2308-4DCG8

Overview

The Renesas Electronics Corporation 2308-4DCG8 is a discontinued high-speed phase-lock loop (PLL) clock multiplier designed for zero-delay clock distribution. It operates at a supply voltage of 3.3V and supports input frequencies up to 133 MHz, providing an output frequency range of 10 to 133.3 MHz. The device features eight LVCMOS outputs organized into two banks, with a maximum output skew of 200 ps peak-to-peak. Packaged in a 16-pin SOIC, it functions as a multiplier without external RC networks, ensuring precise synchronization between the input reference clock and the generated output clocks.

Feature Summary

• Zero-delay buffer architecture aligns output phase with the input clock reference
• Eight LVCMOS outputs distributed across two independently controllable banks
• Maximum operating frequency of 133.3 MHz with cycle-to-cycle jitter under 200 ps
• External feedback pin allows user-controlled delay adjustment

Applications

• High-speed clock distribution systems requiring precise phase alignment
• Multiplication of reference clocks for digital logic interfaces
• System testing modes utilizing direct input clock drive capabilities

Procurement Notes

This component has reached end-of-life status and is no longer manufactured by Renesas Electronics. Availability is restricted to existing stock held by distributors or secondary market suppliers. Verification of authenticity and storage history is critical due to the component's age. Buyers should confirm the specific manufacturing date code and ensure compliance with RoHS directives relevant to their region before acquisition.

Selection Notes

Designers must account for the discontinuation of this part when planning long-term production cycles. The 2308-4DCG8 provides fixed multiplication ratios; verify that the required frequency scaling matches the specific suffix configuration. Ensure the PCB layout accommodates the 16-SOIC package dimensions and maintains signal integrity for LVCMOS signals at frequencies approaching 133 MHz.

Part Context

The 2308-4DCG8 belongs to the IDT 2308 family of zero-delay buffers, which were widely used for clock multiplication in computer and telecommunications equipment. This specific variant offers eight outputs in a standard surface-mount package. It serves as a successor to earlier single-output multipliers but has been superseded by newer integrated clock generators with lower power consumption and higher performance metrics.

Replacement Considerations

Public confirmed substitute part numbers are not available.