SY89429V

Micrel, Inc. 5V/3.3V PROGRAMMABLE FREQUENCY SYNTHESIZER (25MHz to 400MHz) Precision Edge® Precision ESdYg89e4®29V SY89429V FEATURES ■ 3.3V and 5V power supply options ■ 25MHz to 400MHz differential PECL outputs ■ 50ps peak-to-peak output jitter ■ Minimal frequency over-shoot ■ Synthesized architecture ■ Serial 3-wire interface ■ Parallel interface for power-on ■ Internal quartz reference oscillator driven by quartz crystal ■ Application Note (AN-07) for ease of design-ins ■ Available in 28-pin PLCC and SOIC packages APPLICATIONS ■ Workstations ■ Advanced communications ■ High end consumer ■ High-performance computing ■ RISC CPU clock ■ Graphics pixel clock ■ Test equipment ■ Other high-performance processor-based applications Precision Edge® DESCRIPTION The SY89429V is a general purpose, synthesized clock source targeting applications that require both serial and parallel interfaces. Its internal VCO will operate over a range of frequencies from 400MHz to 800MHz. The differential PECL output can be configured to be the VCO frequency divided by 2, 4, 8 or 16. With the output configured to divide the VCO frequency by 2, and with a 16MHz external quartz crystal used to provide the reference frequency, the output frequency can be specified in 1MHz steps. Data sheets and support documentation can be found on Micrel’s web site at: www.micrel.com. Precision Edge is a registered trademark of Micrel, Inc. M9999-011106 [email protected] or (408) 955-1690 1 Rev.: J Amendment: /...