ICS581G-02

Clock Generators, PLLs, Frequency Synthesizers Overview

The ICS581G-02 is a zero delay, glitch-free clock multiplexer based on a Phase Locked Loop (PLL). It accepts two differential or single-ended clock inputs and provides four low-skew outputs. The device features automatic switching between input clocks using a transition detector when the primary clock fails. It operates within a frequency range of 6 MHz to 200 MHz, depending on configuration pins. The part supports 3.3 V or 5 V supply voltages and ensures smooth transitions without short pulses during mux switching.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Zero delay buffer architecture with PLL-based synchronization
• Automatic backup clock switching via transition detector
• Four low-skew CMOS outputs with configurable enable
• Glitch-free multiplexing between two input sources

Clock Generators, PLLs, Frequency Synthesizers Applications

• Systems requiring redundant clock sources
• Backup clock distribution networks
• High-reliability digital system timing

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific suffix for temperature grade and packaging. The 'I' suffix indicates industrial temperature range (-40°C to +85°C), while standard parts operate from 0°C to +70°C. Suffixes 'LF', 'ILF', 'T', and 'FT' denote lead-free compliance and tape/reel shipping formats. Confirm RoHS compliance status as non-green parts have reached end-of-life.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select the ICS581G-02 over the -01 variant when automatic failover is required. Configure S0 and S1 pins to match the input clock frequency range (6-200 MHz). Ensure one output is connected to the FBIN pin for proper PLL operation. Use series termination resistors near the outputs and decoupling capacitors close to the VDD pins for signal integrity.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the IDT ClockBlocks family of clock generation and distribution devices. It serves as a specialized multiplexer within this portfolio, distinct from non-PLL based muxes like the ICS580-01. The device integrates both buffering and switching capabilities in a single 16-pin TSSOP package.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Public confirmed substitute part numbers: None identified in verified documentation.