2308A-4DCGI

Overview

The Renesas Electronics Corporation 2308A-4DCGI is a discontinued 3.3V Phase-Lock Loop (PLL) zero-delay clock multiplier designed for high-speed clock distribution and multiplication applications. Operating within an input frequency range of 10MHz to 133MHz, the device aligns the phase between the incoming clock and output clock to achieve zero delay. It features eight LVCMOS outputs organized into two independent banks of four, allowing separate enable control for each bank. The component utilizes an external feedback pin to synchronize outputs with the input clock, ensuring low jitter performance below 200 ps cycle-to-cycle and output skew under 200 ps.

Feature Summary

• Zero-delay PLL architecture synchronizes output phase with input clock
• Eight LVCMOS outputs distributed across two independently controllable banks
• External feedback pin enables precise delay control between input and outputs
• Low jitter (<200 ps cycle-to-cycle) and output skew (<200 ps)
• Operates at 3.3V VDD with power-down mode drawing less than 25uA

Applications

• High-speed clock distribution systems
• Clock multiplication applications requiring phase alignment
• System testing modes utilizing direct input clock drive

Procurement Notes

The 2308A-4DCGI is listed as a discontinued product by Renesas Electronics. Availability is limited to existing stock or secondary market sources. Verification of authenticity and moisture sensitivity level (MSL 3) is required before procurement. Check datasheet revision history for any functional updates prior to integration.

Selection Notes

Select this component for applications requiring a fixed 4x multiplication ratio from a 10-133MHz reference clock. Ensure the design accommodates the SOIC-16 package dimensions (9.9 x 3.9 x 1.5 mm). Verify that the external feedback loop configuration meets the specific timing requirements, as the device relies on external components for PLL closure.

Part Context

This part belongs to the IDT 2308 family of zero-delay buffers. The suffix '4' indicates a 4x multiplication factor. The 'DCG' code specifies the SOIC-16 package variant. Other variants in the series include 1x, 2x, and high-drive options, catering to different frequency and load requirements within the same architectural framework.

Replacement Considerations

Direct replacements are unavailable due to discontinuation. Consider the 23S08 series for spread spectrum compatibility or the FemtoClock 3 series (e.g., RC223) for ultra-low jitter applications. Cross-reference pinouts carefully when migrating to newer clock generator families.