ST49C107A-04

www.DataSheet4U.com Preliminary ...the analog plus company TM ST49C107A-04 Preprogrammed CPU Mother Board Frequency Generator June 1997-3 FEATURES D Provides Reference Clock And Synthesized Clock D 5 to 32 MHz Input Reference Frequency D Pin-to-Pin Compatible to Avasem AV9107 D Programmable Analog Phase Locked Loop D Low Power Single 5V CMOS Technology D Up to 16 Frequencies Stored Internally D 8/14 pin DIP or SOIC Package GENERAL DESCRIPTION The ST49C107A-04 is a mask programmable monolithic analog CMOS device designed to generate two simultaneous clocks. The output frequency can vary from 2 to 130MHz, with up to 16 single selectable preprogrammed frequencies stored in internal ROM. The ST49C107A-04 is designed to replace existing CPU mother board clocks generated from individual oscillators ORDERING INFORMATION Part No. ST49C107ACF14-04 Package 14 Lead 150 Mil JEDEC SOIC Operating Temperature Range 0°C to 70°C in order to reduce board space and number of oscillators. To provide high speed and low jitter clock, the parts utilize a high speed analog CMOS phase locked loop using 14.318 MHz system clock as the reference clock (note that reference clock can be changed to generate optional frequencies from a standard programmed device). The programmed clock outputs are selectable via four address lines. BLOCK DIAGRAM XTAL XTAL OE1 OE2 Oscillator Circuit Output Buffer 1X-CLOCK 2X-CLOCK Programmable Counter B Phase Detector Charge Pump Loop Filter Voltage Controlled O...