23S08-3DCG

Overview

The Renesas Electronics 23S08-3DCG is a discontinued 3.3V 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 (PLL) architecture to achieve zero delay by aligning the phase between the incoming clock and output clocks. The device features eight LVCMOS outputs organized into two banks of four, with separate enable controls for each bank. Key electrical specifications include a maximum cycle-to-cycle jitter of 200 ps and an output skew of less than 200 ps. It accepts spread spectrum inputs and functions within a commercial temperature range of 0°C to +70°C.

Feature Summary

• Zero Delay PLL Architecture: Aligns output phase with input clock for minimal latency in frequencies from 10 MHz to 133 MHz.
• Spread Spectrum Compatible: Accepts spread spectrum input signals to reduce electromagnetic interference (EMI).
• Dual Output Banks: Distributes one clock input to two independent banks of four LVCMOS outputs each.
• Low Jitter Performance: Specifies a maximum cycle-to-cycle jitter of 200 ps and output skew under 200 ps.

Applications

• High-speed clock distribution systems requiring precise phase alignment.
• Digital signal processing (DSP) and data acquisition systems operating up to 133 MHz.
• Telecommunications equipment utilizing spread spectrum clocking for EMI reduction.
• Computer peripherals and memory interfaces needing low-jitter clock multiplication.

Procurement Notes

The 23S08-3DCG is officially listed as obsolete or end-of-life by the manufacturer. Verification of current availability requires checking secondary market distributors for surplus stock. Buyers must confirm the specific suffix 'DCG' corresponds to the SOIC-16 package and lead-free status before procurement. Due to its discontinued status, long-term supply continuity cannot be guaranteed without explicit vendor confirmation.

Selection Notes

Select this component when a fixed-ratio clock multiplier with zero delay is required for LVCMOS logic families. The 23S08-3 series specifically supports 2x and 4x multiplication factors relative to the input reference clock. Ensure the application environment remains within the 0°C to +70°C commercial temperature range. Verify that the system design accommodates the external feedback loop configuration necessary for the PLL operation and that the 3.3V power supply meets the specified noise requirements.

Part Context

This part belongs to the IDT/Renesas 2308 family of high-speed PLL clock multipliers. The '3' suffix indicates specific prescaling and multiplication options (typically 2x and 4x). The 'DCG' suffix denotes the SOIC-16 surface-mount package with lead-free termination. This family was widely used in legacy high-performance computing and networking infrastructure before being superseded by more programmable clock synthesizers.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. As the device is obsolete, engineers should evaluate newer Renesas FemtoClock series or other zero-delay buffer families for pin-compatible or functional replacements. Cross-referencing with distributor databases for direct equivalents is recommended due to the lack of official substitution lists.