580M-01LF Renesas

DATASHEET GLITCH-FREE CLOCK MULITPLEXER ICS580-01 Description Features The ICS580-01 is a clock multiplexer (mux) designed to 16-pin SOIC and 16-pin TSSOP packages available switch between two clock sources with no glitches or short Pb (lead) free package pulses. The operation of the mux is controlled by an input No short pulses or glitches on output pin but the part can also be configured to switch Operates from 2 to 220 MHz automatically if one of the input clocks stops. The part also Low skew outputs provides clock detection by reporting when an input clock Clock detect feature has stopped. Ideal for systems with back-up or redundant clocks For a clock mux with zero delay and smooth switching, see Selectable timeouts for clock detection either the ICS581-01 or the ICS581-02. Separate supply voltages allow power supply voltage translation Operates from 2.5 V to 5 V Block Diagram VDDC VDDI CLK1 INB 1 OE1 0 INA CLK2 OE2 SELB Transition NO INB Detector OE4 Transition NO INA Detector OE3 Timer DIV GND IDT / ICS GLITCH-FREE CLOCK MULITPLEXER 1 ICS580-01 REV L 051310ICS580-01 GLITCH-FREE CLOCK MULITPLEXER CLOCK MULTIPLEXER Pin Assignment Timeout Selection DIV Nominal Timeout SELB 1 16 OE1 0 600 ns DIV 2 15 VDDC 1 75 ns VDDI 3 14 CLK1 INA 4 13 CLK2 INB 5 12 NO INA GND 6 11 NO INB OE4 7 10 GND OE3 8 9 OE2 16 pin (150 mil) SOIC SELB 1 16 OE1 DIV 2 15 VDDC VDDI 3 14 CLK1 INA 4 13 CLK2 INB 5 12 NO INA GND 6 11 NO INB OE4 7 10 GND OE3 8 9 OE2 16-pin TSSOP IDT / ICS GLITCH-FREE CLOCK MULITPLEXER 2 ICS580-01 REV L 051310