ICS581-02

ZERO DELAY GLITCH-FREE CLOCK MULTIPLEXER DATASHEET ICS581-01/02 Description Features The ICS581-01/02 are glitch free, Phase Locked Loop (PLL) based clock multiplexers (mux) with zero delay from input to output. They each have four low skew outputs which can be configured as a single output, three outputs, or four outputs. The ICS581-01 allows user control over the mux switching, while the ICS581-02 has automatic switching between the two clock inputs. The ICS581-01 and -02 are members of IDT’s ClockBlocksTM family of clock generation, synchronization, and distribution devices. For a non-PLL based clock mux, see the ICS580-01. Block Diagram 16-pin TSSOP package RoHS compliant packaging No short pulses or glitches on output Operates from 6 to 200 MHz Low skew outputs User controlled (-01) or automatic, timed mux switch (-02) Ideal for systems with back-up or redundant clocks Zero delay (input to output) 50% output duty cycle allows duty cycle correction SpreadSmartTM technology works with spread spectrum parts Industrial temperature of ICS581-02 available ICS581-01 INA 1 VDD 2 CLK1 INB SELA FBIN 0 PLL Output Divide CLK2 CLK3 2 S1:0 ICS581-02 DIV INA INB FBIN /48 1 /3 0 1 0 GND 2 VDD 2 IN Transition Detector OE0 OE1 PLL Output Divide CLK4 CLK1 CLK2 CLK3 2 S1:0 GND 2 OE0 OE1 CLK4 IDT® ZERO DELAY GLITCH-FREE CLOCK MULTIPLEXER 1 ICS581-01/02 REV M 110216 ICS581-01/02 ZERO DELAY GLITCH-FREE CLOCK MULTIPLEXER Pin Assignment S0...