2308A-1DCG

Overview

The 2308A-1DCG is a discontinued high-speed phase-lock loop (PLL) clock multiplier manufactured by Renesas Electronics. Designed for zero-delay clock distribution, it operates within a frequency range of 10 MHz to 133 MHz at a 3.3V supply voltage. The device features eight LVCMOS outputs organized into two independent banks of four, allowing separate enable control for each bank. It achieves low output skew and cycle-to-cycle jitter through external feedback synchronization. The component is housed in a 16-pin SOIC package and supports industrial temperature ranges.

Feature Summary

• Zero-delay PLL architecture synchronizes output phase with the input clock reference.
• Eight LVCMOS outputs divided into two independently controllable banks of four.
• Operates at frequencies from 10 MHz to 133 MHz with 3.3V power supply.
• Low output skew (<200 ps) and cycle-to-cycle jitter (<200 ps).

Applications

• High-speed clock distribution networks requiring precise phase alignment.
• System testing modes utilizing direct input clock drive capabilities.
• Power-sensitive designs leveraging tri-state and power-down modes.

Procurement Notes

The 2308A-1DCG is officially listed as obsolete or end-of-life by the manufacturer. Verification of availability requires checking authorized distributors for remaining stock or surplus market sources. Ensure compliance with RoHS directives and moisture sensitivity level (MSL) handling procedures during storage and assembly.

Selection Notes

Select this component for applications requiring fixed multiplication ratios without external programming. Verify that the required output frequency falls within the 10-133 MHz range. Consider the 16-pin SOIC package constraints and thermal characteristics for the specific PCB layout. Alternative parts may be needed due to the discontinued status.

Part Context

This part belongs to the IDT/Renesas 2308 family of zero-delay clock multipliers. Variants such as the 2308-2, -3, and -4 offer different prescaling and multiplication options (1x, 2x, 4x). The 'A' suffix typically denotes specific manufacturing revisions or binning, while 'DCG' indicates the SOIC-16 package and lead-free composition.

Replacement Considerations

Direct replacements are limited due to the obsolete status. Evaluate similar zero-delay buffers like the 2309 series for lower skew requirements or other Renesas FemtoClock families for modern low-jitter alternatives. Pin-compatible substitutes should be verified against electrical specifications and timing parameters.