2308B-2DCGI

Overview

The Renesas Electronics 2308B-2DCGI is a 3.3V PLL zero-delay clock multiplier designed for high-speed clock distribution and multiplication applications. It operates within an input frequency range of 10 MHz to 133 MHz, supporting output frequencies up to 133.3 MHz. The device features eight outputs organized into two banks of four, with independent enable controls for each bank. Key electrical specifications include a maximum output skew of 200 ps and cycle-to-cycle jitter below 200 ps. It functions at a supply voltage of 3.3 V (3 V to 3.6 V) and is housed in a 16-pin SOIC package.

Feature Summary

• Zero-delay buffer architecture aligns output phase with the incoming clock input.
• Supports 1x, 2x, and 4x multiplication ratios via address pin selection.
• Dual output banks allow independent tri-stating and control.
• Low jitter performance with cycle-to-cycle jitter under 200 ps.

Applications

• High-speed clock distribution networks.
• System synchronization requiring precise phase alignment.
• Multiplication of reference clocks for digital logic interfaces.

Procurement Notes

The 2308B-2DCGI is identified as an obsolete or end-of-life component. Verification of current availability requires checking authorized distributors for remaining stock or surplus channels. Users should confirm moisture sensitivity level (MSL 3) handling requirements if storage duration has exceeded specified limits prior to reflow soldering.

Selection Notes

Select this component when a fixed-ratio clock multiplier with zero delay is required for LVCMOS/LVTTL interfaces. Ensure the design supports the specific multiplication factor (1x, 2x, or 4x) configured by the address pins. Verify that the 16-SOIC package footprint and thermal characteristics match the PCB layout constraints.

Part Context

This part belongs to the IDT/Renesas 2308B family of zero-delay buffers. Variants differ primarily in multiplication factors (e.g., -1 for 1x, -2 for 1x/2x, -3 for 2x/4x) and package types (SOIC vs. TSSOP). The 'I' suffix typically denotes industrial temperature range operation, though specific commercial variants exist within the same series.

Replacement Considerations

Direct replacements may include other members of the 2308B family such as the 2308B-1DCG or 2308B-3DCG, depending on the required multiplication ratio. Cross-referencing with newer Renesas clock generator families is recommended for long-term supply stability.