2308A-3DCGI8

Overview

The Renesas Electronics 2308A-3DCGI8 is a discontinued 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, utilizing a phase-lock loop to align the phase between the incoming clock and output clock. The device features eight outputs organized into two banks of four, with separate enable controls for each bank. It supports specific multiplication ratios, including 2x and 4x options, and is housed in a 16-pin SOIC package.

Feature Summary

• Zero-delay buffer architecture synchronizes output phase with the input clock reference.
• Supports 2x and 4x multiplication ratios for generating higher frequency clocks from lower frequency references.
• Features two independent output banks of four drivers each, allowing individual tri-state control via address pins.
• Operates on a single 3.3V supply voltage with low power consumption, drawing less than 25uA in power-down mode.

Applications

• High-speed clock distribution networks requiring precise phase alignment.
• System synchronization where zero delay between reference and driven clocks is critical.
• Multiplication of reference clocks for processors or memory interfaces operating up to 133 MHz.

Procurement Notes

This component is officially listed as End-of-Life (EOL) by Renesas Electronics. Distribution channels such as Mouser indicate that the product is no longer actively sold in many regions. Verification of current availability requires checking authorized distributors for remaining stock or obsolete inventory, as standard production runs have ceased.

Selection Notes

Designers should verify the specific multiplication ratio requirements against the -3 suffix configuration, which typically supports 2x and 4x modes. Ensure the application input frequency falls within the 10 MHz to 133 MHz operational range. Consider the 16-SOIC package dimensions and moisture sensitivity level during PCB layout and reflow soldering processes.

Part Context

The 2308A series belongs to Renesas' family of zero-delay clock multipliers, previously manufactured under IDT branding before the acquisition. This specific part variant utilizes the DCI8 suffix, indicating a tape-and-reel packaging format suitable for automated surface-mount assembly. It serves as a specialized solution for jitter reduction and clock skew management in digital systems.

Replacement Considerations

As this part is discontinued, direct replacements may be limited. Engineers should evaluate newer generations of clock multipliers from Renesas or other manufacturers that offer similar zero-delay buffering capabilities and compatible pinouts. Cross-reference datasheets for electrical parameters such as jitter performance and output drive strength to ensure functional equivalence.