ICS544-01

CLOCK DIVIDER DATASHEET ICS544-01 Description The ICS544-01 is crystal oscillator module IC with divide by 512 frequency output. It employs a 16.777216 MHz fundamental frequency crystal source oscillator to generate 32.768 kHz output crystal oscillator output. In addition a divide by 256, 64 and 32 options are also provided through select pins. The chip has an OE pin that tri-states the output and stops the oscillator circuits. The ICS544-01 is a member of IDT’s ClockBlocksTM family of clock building blocks. See the ICS541 and ICS542 for other clock dividers, and the ICS501, 502, 511, 512, and 525 for clock multipliers. Features Packaged in 8-pin SOIC Pb-free package IDT’s lowest cost clock divider Easy to use with other generators and buffers Input crystal at 16.777216MHz Output clock duty cycle of 45/55 Output Enable Advanced, low-power CMOS process Operating voltage of 2.25 V to 3.6 V Does not degrade phase noise - no PLL Available in industrial temperature range Block Diagram S1, S0 (1:0) X1 16.777216MHz crystal input X2 Optional tuning capacitors VDD Divider and Selection Circuitry /32, /64 /256, /512, CLK1 GND OE IDT® CLOCK DIVIDER 1 ICS544-01 REV B 051810 ICS544-01 CLOCK DIVIDER Pin Assignment X1/ICLK 1 X2 2 GND 3 S0 4 8 S1 7 VDD 6 OE 5 CLK 8-pin (150 mil) SOIC Clock Divider Table S1 S0 CLK 00 Input/32 01 Input/64 10 Input/256 11 Input/512 0 = connect directly to ground 1 = connect directly to VDD CLOCK DIVIDER Pin D...