2308-2HPGGI

Overview

The Renesas Electronics 2308-2HPGGI is a 3.3V Zero Delay Clock Multiplier belonging to the 2308 series, designed for high-speed clock distribution and multiplication applications. It operates within an input frequency range of 10 MHz to 133 MHz. The device features eight LVCMOS outputs organized into two banks of four, allowing independent control via select addresses. Key electrical parameters include a maximum output frequency of 133 MHz, a maximum duty cycle distortion of 60%, and a cycle-to-cycle jitter of less than 200 ps. It functions with a supply voltage of 3.3 V and draws approximately 70 mA during operation.

Feature Summary

• Zero delay PLL architecture synchronizes output phase with the input clock reference.
• Eight LVCMOS outputs divided into two independently enableable banks.
• Supports 1x, 2x, and 4x multiplication ratios via external address selection.
• Low jitter performance with cycle-to-cycle jitter under 200 ps.

Applications

• High-speed clock distribution networks requiring precise phase alignment.
• System synchronization where zero delay between input and output is critical.
• Multiplication of reference clocks for digital logic and memory interfaces.

Procurement Notes

Verify component status as the 2308 series is generally listed as obsolete or end-of-life by the manufacturer. Confirm availability through authorized distributors or secondary markets, noting that standard packaging may be limited. Ensure compatibility with existing PCB footprints, specifically the TSSOP-16 package, before procurement.

Selection Notes

Select this part when a fixed-ratio multiplier (1x, 2x, or 4x) is required without external programming. Compare against the 23S08 series if spread spectrum input capability is necessary, as the standard 2308 does not support it. Verify that the 3.3V LVCMOS output levels match the receiving logic inputs.

Part Context

This component is part of the IDT/Renesas 2308 family of zero-delay buffers. It shares architectural similarities with variants like the 2308-1HPGGI and 2308-5HPGGI, differing primarily in the selectable multiplication factors determined by hardware pin configurations. The suffix 'GGI' denotes the TSSOP-16 package and industrial temperature range specifications.

Replacement Considerations

Direct substitutes include other members of the 2308 family such as the 2308-1HPGGI or 2308-5HPGGI, provided the specific multiplication ratio requirements are met. For spread spectrum functionality, the 23S08 series serves as a functional alternative. Cross-reference pinouts to ensure compatibility with the TSSOP-16 footprint.