2308B-1DCGI

Overview

The Renesas Electronics Corporation 2308B-1DCGI is a discontinued high-speed phase-lock loop (PLL) clock multiplier designed for zero-delay clock distribution. It operates within a frequency range of 10 MHz to 133 MHz and accepts LVCMOS input signals. The device provides eight LVCMOS outputs organized into two independent banks of four, allowing separate control via select addresses. Key electrical parameters include a maximum output skew of 200 ps and cycle-to-cycle jitter under 200 ps. It functions at a 3.3 V supply voltage with an operating temperature range of 0°C to 70°C.

Feature Summary

• Zero-delay PLL architecture synchronizes output phases directly to the input clock reference.
• Eight LVCMOS outputs divided into two independently controllable banks of four.
• Supports external feedback pin configuration for flexible delay control between input and outputs.
• Features low power consumption with less than 25 µA draw in power-down mode.

Applications

• High-speed clock distribution networks requiring precise phase alignment.
• System testing modes utilizing direct input clock drive through the outputs.
• Multiplication applications involving 1x, 2x, or 4x prescaling ratios.

Procurement Notes

This component is officially listed as obsolete by the manufacturer. Availability is restricted to surplus markets or existing inventory. Verification of authenticity and moisture sensitivity level (MSL 3) is critical due to potential shelf-life expiration. Buyers should confirm the specific suffix variations against original datasheets to ensure functional equivalence before procurement.

Selection Notes

Select this part for single-input to eight-output clock multiplication tasks up to 133 MHz. Ensure the design accommodates the SOIC-16 package dimensions and pitch. Verify that the application requires LVCMOS signaling levels compatible with the 3.3 V supply. Consider the 200 ps skew specification when designing trace lengths for sensitive timing paths.

Part Context

The 2308B series belongs to a family of zero-delay clock multipliers from Renesas (formerly IDT). This specific model variant utilizes the 'DCG' suffix indicating a 16-lead SOIC package. It shares architectural similarities with other members like the 2308-3DCG but differs in internal prescaling configurations and output drive capabilities defined by its specific suffix code.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Due to the obsolete status, engineers must evaluate alternative clock generators from current product lines or assess mechanical and electrical compatibility with similar legacy components.