2308-2HDCG8

Overview

The IDT2308-2HDCG8 is a discontinued high-speed phase-lock loop (PLL) clock multiplier manufactured by Renesas Electronics Corporation. It functions as a zero-delay buffer with a 1:8 input-to-output ratio, supporting frequencies up to 133.3MHz. The device accepts LVTTL inputs and provides LVTTL outputs in a 16-SOIC package. It operates on a 3V to 3.6V supply within the commercial temperature range of 0°C to 70°C. Key electrical specifications include an output skew of less than 200ps and cycle-to-cycle jitter under 200ps peak-to-peak.

Feature Summary

• Zero-delay buffer architecture aligns output phase with the incoming clock input.
• Supports frequency multiplication ratios of 1x and 2x via address pins.
• Features two independent banks of four outputs with separate enable controls.
• Includes power-down mode drawing less than 25uA when no input clock is present.

Applications

• High-speed clock distribution systems requiring low skew.
• Multiplication of reference clocks for digital logic interfaces.
• System testing modes utilizing direct input clock drive.

Procurement Notes

This component is officially marked as discontinued by the manufacturer. Verification of availability requires checking secondary market distributors or obsolete inventory lists. Ensure compliance with RoHS status, as original versions may not meet current environmental regulations compared to newer revisions like the 2308B series.

Selection Notes

Select this part only if legacy compatibility with the specific 2308-2 configuration is required. Verify that the 16-SOIC package dimensions and 1.27mm pitch match the PCB footprint. Confirm that the LVTTL voltage levels are compatible with the target system's logic requirements before integration.

Part Context

The IDT2308 series was designed for applications ranging from 10MHz to 133MHz. The -2 suffix indicates support for 1x and 2x multiplication. The DC suffix denotes the SOIC package type, while G8 typically refers to lead-free packaging variations. This model belongs to the earlier generation of Renesas clock multipliers prior to the 2308B update.

Replacement Considerations

The IDT2308B-2DCG8 is a documented replacement option offering similar functionality with updated manufacturing processes. Users should verify pinout compatibility and ensure the B-series supports the required 1x/2x multiplication settings.