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ICS307M-01I Datasheet(PDF) 1 Page - Integrated Circuit Systems |
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ICS307M-01I Datasheet(HTML) 1 Page - Integrated Circuit Systems |
1 / 8 page ICS307 Serially Programmable Clock Source MDS 307 D 1 Revision 042501 Integrated Circuit Systems, Inc. • 525 Race Street • San Jose •CA•95126•(408) 295-9800tel •www.icst.com • Packaged as 16 pin narrow SOIC • Highly accurate frequency generation • Serially programmable: user determines the output frequency via a 3 wire interface. • Eliminates need for custom quartz • Input crystal frequency of 5 - 27 MHz • Output clock frequencies up to 200 MHz • Power Down Tri-State mode • Very low jitter • Operating voltages of 3.0 to 5.5 V • 25 mA drive capability at TTL levels • Industrial temperature available The ICS307-01 and ICS307-02 are versatile serially programmable clock sources which take up very little board space. They can generate any frequency from 6 to 200 MHz, and have a second configurable output. The outputs can be reprogrammed on the fly, and will lock to a new frequency in 10 ms or less. Smooth transitions (in which the clock duty cycle remains roughly 50%) are guaranteed if the output divider is not changed. The devices include a PDTS pin which tri-states the output clocks and powers down the entire chip. The ICS307-02 features a default clock output at start-up and is recommended for all new designs. Block Diagram Description Features Crystal or clock input X1/ICLK X2 Reference Divider Phase Comparator, Charge Pump, and Loop Filter Crystal Oscillator VCO Divider VCO Output Buffer VDD GND CLK1 Output Buffer CLK2 R6:R0 V8:V0 S2:S0 3 9 7 Output Divider Function Select F1:F0 2 2 3 2 C1:C0 S2:S0 F1:F0 TTL TTL C1:C0 SCLK Shift Register DATA STROBE PDTS |
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