2308-1HDCG8

Overview

The IDT2308-1HDCG8 is a discontinued high-speed phase-lock loop (PLL) clock multiplier manufactured by Renesas Electronics Corporation. It functions as a zero-delay buffer, aligning the phase between the incoming clock and output clocks within a frequency range of 10 MHz to 133.3 MHz. The device features an LVTTL input and LVCMOS outputs, operating on a single 3V to 3.6V supply voltage. Packaged in a 16-SOIC (0.154", 3.90mm width) surface-mount format, it supports commercial operation temperatures from 0°C to 70°C. The component provides one-to-eight clock distribution with low jitter characteristics.

Feature Summary

• Zero-delay buffer architecture synchronizes output phases with the input clock reference.
• Operates at frequencies up to 133.3 MHz with cycle-to-cycle jitter under 200 ps.
• Features two independent banks of four outputs, each with separate enable control.
• Supports external feedback pin configuration for flexible delay management.

Applications

• High-speed clock distribution networks requiring precise phase alignment.
• System synchronization where zero propagation delay is critical.
• Digital signal processing circuits utilizing 3.3V logic levels.

Procurement Notes

This part number is officially obsolete and no longer manufactured. Verification of availability requires checking secondary market distributors for surplus stock. Ensure that replacement components match the original electrical specifications, particularly the 3.3V supply requirement and SOIC-16 package dimensions, to maintain system compatibility.

Selection Notes

Select this component only if legacy design constraints require the specific 1:8 ratio and LVTTL/LVCMOS interface combination. Verify that the 133.3 MHz maximum frequency meets the target application's timing requirements. Consider the commercial temperature range limits when evaluating environmental suitability for the intended deployment scenario.

Part Context

The IDT2308 series belongs to Renesas' family of zero-delay clock multipliers designed for high-performance digital systems. This specific variant utilizes the 'H' designation for high drive capability and 'DCG8' indicating the SOIC package and tape/reel carrier type. It serves as a successor to earlier IDT clock buffer technologies, offering improved skew performance compared to standard buffers.

Replacement Considerations

Public confirmed substitute part numbers include CDCVF25081PW and CDCVF25081PWR from Texas Instruments. These alternatives offer similar clock multiplication functions but may require verification of pinout compatibility and voltage level matching before integration into existing designs.