ICS581-02

www.DataSheet4U.com ICS581-01, -02 Zero-Delay Glitch-Free Clock Multiplexer Features Tiny 16 pin TSSOP package No short pulses or glitches on output. Operates to 200 MHz User controlled (ICS581-01) or automatic, timed (ICS581-02) switch Low skew outputs Ideal for systems with backup or redundant clocks Zero delay, input to output 50% output duty cycle allows duty cycle correction Spread Smart™ technology works with spread spectrum parts CLK1 1 0 SELA FBIN OE0 OE1 PLL 2 S0, S1 CLK4 OE1 CLK3 OE0 Description The ICS581-01 and ICS581-02 are glitch free, Phase Locked Loop (PLL) based clock multiplexers (mux) with zero delay from input to output. They each have 4 low skew outputs which can be configured as a single output, 3 outputs or 4 outputs. The ICS581-01 allows user control over the mux switching. The ICS581-02 has automatic switching between the 2 clock inputs. The ICS581-01 and -02 are members of the ICS Clock Blocks™ family of clock generation, synchronization, and distribution devices. For a non-PLL based clock mux, see the ICS580-01. Block Diagrams INA INB CLK2 ICS581-01 External Feedback IN ÷48 ÷3 NO_INA Transition Detector 1 0 DIV CLK1 OE0 CLK2 PLL CLK3 INA INB FBIN 1 0 ICS581-02 OE0 OE1 2 S0, S1 CLK4 OE1 External Feedback 1 Revision 041100 Printed 11/14/00 Integrated Circuit Systems, Inc. 525 Race Street San Jose CA95126 (408) 295-9800tel www.icst.com MDS 581-01, 581-02 A www.DataSheet4U.com ICS581-01, -02 Zero-Delay Glitch-Fre...