IDT23S05-1DC8

Clock Generators, PLLs, Frequency Synthesizers Overview

The IDT23S05-1DC8 is an 8-pin SOIC zero delay clock buffer operating at 3.3V with a frequency range of 10MHz to 133MHz. It distributes one reference input to five low-skew outputs using an internal PLL, achieving zero input-output delay by aligning phases. The device supports spread spectrum timing and features a power-down mode drawing less than 12µA in commercial temperature ranges. Key electrical parameters include output skew under 250ps, cycle-to-cycle jitter below 200ps, and rise/fall times up to 2.5ns.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Zero Delay Buffer: Aligns phase between incoming clock and outputs for minimal I/O delay.
• Spread Spectrum Compatible: Passes through spread spectrum features without filtering.
• Low Skew and Jitter: Output skew < 250ps; cycle-to-cycle jitter < 200ps pk-pk.
• Power Down Mode: Draws < 12µA (Commercial) or < 25µA (Industrial) when REF is inactive.

Clock Generators, PLLs, Frequency Synthesizers Applications

• SDRAM Clock Distribution
• Telecom Systems
• Datacom Applications
• PC Motherboards and Workstations
• Critical Path Delay Designs

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the package type matches the 'DC' suffix designation as an 8-Pin Small Outline SOIC. Confirm the operating temperature range corresponds to the 'blank' suffix for Commercial operation (0°C to +70°C). Note that non-green parts have reached End-of-Life status per PDN U-09-01 dated May 13, 2010. Ensure sourcing from authorized distributors to guarantee component authenticity and traceability.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select the IDT23S05-1DC8 for standard drive applications requiring 10MHz to 133MHz clock distribution. Use this part instead of the -1H variant if lower drive strength is sufficient, as the -1H offers higher current capability but may not be necessary for all loads. Ensure all outputs, including CLKOUT, are equally loaded to maintain zero I/O delay specifications. Verify load capacitance requirements against the operating frequency to stay within specified limits.

Clock Generators, PLLs, Frequency Synthesizers Part Context

The IDT23S05 is an 8-pin version of the IDT23S09, designed for high-speed clock distribution. It accepts one reference input and drives five outputs. The device integrates an on-chip PLL with feedback obtained from the CLKOUT pad. It is characterized for both Industrial and Commercial temperature ranges, providing flexibility for various system environments while maintaining low jitter and skew performance.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

IDT23S05-1DCG is the green RoHS-compliant alternative to the non-green IDT23S05-1DC* variants. Both share identical electrical characteristics and pinouts. Verify compatibility with existing PCB layouts and ensure the replacement meets the required environmental specifications for the target application.