ICS ICS477-05
The ICS477-05 generates five high-quality, high-frequency clock outputs including two reference outputs from a low frequency pullable crystal. It is designed to replace crystals and crystal oscillators in most electronic systems. It can replace multiple crystals and oscillators, saving board space and cost.FEATURES
● Packaged in 28-pin SSOP (QSOP)● Available in Pb-free packaging
● Replaces a VCXO plus multiple crystals and oscillators
DESCRIPTION
Using Phase-Locked-Loop (PLL) techniques, the device runs from a fundamental mode, pullable crystal.● On-chip patented VCXO pull range 200 ppm (minimum)
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● Duty cycle of 45/55 Operating voltage of 3.3V Advanced, low power, CMOS process Input crystal frequency of 27 MHz Five output clocks Industrial temperature range available Block Diagram VDD 6 VIN 27 MHz Pullable Crystal X1 Voltage Controlled Crystal Oscillator PLLA Divide Logic and Output Enable Control 54.054M PLLB PLLC PLLD 74.175M X2 External capacitors may be required 54M 2 27M 10 PDTS GND MDS 477-05 H Integrated Circuit Systems, Inc.
● 1 525 Race Street, San Jose, CA 95126
● Revision 062404 tel (408) 297-1201
● ICS477-05 Quad PLL with VCXO for HDTV Pin Assignment X1 GND GND V IN VDD VDD GND GND GND GND 5 4 .0 5 4 M NC NC 7 4 .1 7 5 M 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 2...