2308-2DCG8

Overview

The Renesas Electronics Corporation 2308-2DCG8 is a discontinued 3.3V PLL zero-delay clock multiplier designed for high-speed clock distribution and multiplication applications. It operates within a frequency range of 10 MHz to 133 MHz, providing an input-to-output ratio of 1:8. The device features two banks of four outputs each, controlled via select addresses, with output skew less than 200 ps and cycle-to-cycle jitter under 200 ps peak-to-peak. Packaged in a 16-pin SOIC (DCG16) format, it supports LVTTL/LVCMOS interfaces and includes test mode functionality for direct input clock driving.

Feature Summary

• Zero-delay buffer architecture synchronizes output phase with the incoming clock input.
• Dual output banks allow independent tri-state control via address pins.
• External feedback pin enables user-controlled delay between input and outputs.
• Low power consumption drops below 25 uA in power-down mode.

Applications

• High-speed clock distribution systems operating up to 133 MHz.
• Multiplication of reference clocks by factors of 1x or 2x.
• System testing environments utilizing the dedicated test mode feature.

Procurement Notes

The 2308-2DCG8 is officially listed as obsolete or end-of-life by the manufacturer. Availability is restricted to surplus or secondary market channels. Verification of authenticity and moisture sensitivity level (MSL 3) handling history is critical before integration into new designs.

Selection Notes

This component belongs to the 2308B family, specifically configured for 1x and 2x multiplication ratios. Designers requiring higher multiplication factors should consider variants such as the 2308B-3 or 2308B-4. Ensure the application voltage aligns with the specified 3.3V VDD requirement and that the SOIC-16 package fits the PCB layout constraints.

Part Context

The 2308 series represents a line of high-speed phase-lock loop clock multipliers from Renesas (formerly IDT). The 2308-2DCG8 variant specifically denotes the 16-pin SOIC package with commercial temperature rating. It serves as a bridge component for synchronizing system clocks without introducing propagation delay relative to the input reference.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation due to the component's obsolete status. Engineers must evaluate alternative clock generators from current product lines or perform a full redesign if exact pin-for-pin replacements are required.