2308-3DCGI

Overview

The Renesas Electronics Corporation 2308-3DCGI 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, providing eight outputs across two banks of four. The device achieves zero delay by aligning the phase between the incoming clock and output clocks. Key electrical parameters include a maximum operating frequency of 133 MHz, a supply voltage of 3.3 V, and a typical operating current of 45 mA. It features low jitter of less than 200 ps cycle-to-cycle and output skew under 200 ps. The component is housed in a 16-pin SOIC package.

Feature Summary

• Zero-delay buffer architecture synchronizes output phases with the input clock reference.
• Distributes one clock input to two independent banks of four outputs each.
• Supports external feedback pin configuration for precise delay control.
• Includes test mode for direct input clock drive and power-down mode with tri-stated outputs.

Applications

• High-speed clock distribution networks requiring phase alignment.
• System synchronization where zero propagation delay is critical.
• Multiplication of reference clocks up to 133 MHz.

Procurement Notes

The 2308-3DCGI is officially listed as obsolete or discontinued by Renesas Electronics. Availability is restricted to surplus or secondary market channels. Verification of authenticity and lot traceability is essential when sourcing from non-authorized distributors. Check datasheets for specific moisture sensitivity levels and handling requirements before procurement.

Selection Notes

Select this component for applications requiring a fixed 1x or 2x/4x multiplication ratio depending on the specific suffix variant, though the base 2308-3 series typically supports 2x and 4x options. Ensure the design accommodates the 16-SOIC package dimensions and 3.3V logic levels. Verify that the required input frequency falls within the 10 MHz to 133 MHz operational range and that the thermal characteristics of the SOIC package meet the system's dissipation needs.

Part Context

This part belongs to the IDT 2308 family of zero-delay clock multipliers, originally developed by Integrated Device Technology (IDT) and later acquired by Renesas Electronics. The family includes variants like the 2308B and 23S08, offering different drive strengths and spread-spectrum capabilities. The 2308-3DCGI specifically denotes the commercial temperature range version in a tube or tape-and-reel format depending on the exact suffix history.

Replacement Considerations

Direct replacements are limited due to the discontinued status. Potential alternatives within the same family include the 2308B-3DCG or 23S08-3DCG, provided they match the package and electrical specifications. Cross-reference with other zero-delay buffers from manufacturers such as Microchip or Texas Instruments if form-factor compatibility allows.