SY89429VJC

Clock Generators, PLLs, Frequency Synthesizers Overview

The SY89429VJC is a programmable frequency synthesizer from the Precision Edge series, manufactured by Microchip Technology (originally Micrel). It features an internal VCO operating between 400MHz and 800MHz. The device provides differential PECL outputs with configurable division ratios of 2, 4, 8, or 16. It supports both serial 3-wire and parallel interfaces for configuration. Operating on a single supply voltage of 3.135V to 5.25V, it delivers 50ps peak-to-peak output jitter. The component is housed in a 28-pin PLCC package and operates within a commercial temperature range of 0°C to 75°C.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Internal VCO frequency range of 400MHz to 800MHz
• Configurable differential PECL output dividers (÷2, ÷4, ÷8, ÷16)
• Dual configuration via serial 3-wire and parallel TTL interfaces
• Low jitter performance with 50ps peak-to-peak cycle-to-cycle specification

Clock Generators, PLLs, Frequency Synthesizers Applications

• RISC CPU clock generation
• Graphics pixel clock sources
• High-performance computing systems
• Advanced communications equipment
• Test and measurement instrumentation

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify component authenticity through authorized channels as this part may be discontinued. Confirm RoHS compliance status, as standard versions are Sn-Pb while Pb-Free variants carry specific suffixes. Ensure proper handling for ESD-sensitive components and validate that the 28-LCC package footprint matches the design requirements before procurement.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select the SY89429VJC when a synthesized clock source with low jitter is required for high-speed processors. Ensure the external crystal frequency allows the M divider to remain within the 200–400 range for stable PLL lock. Verify that the system power supply can accommodate the 3.3V or 5V options and that the 28-pin PLCC package fits the PCB layout constraints.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the Precision Edge family of clock synthesizers. Originally developed by Micrel, Inc., the product line was acquired by Microchip Technology. The SY89429VJC specifically targets applications requiring precise frequency synthesis with flexible interface options for both initial power-on configuration and dynamic adjustment.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Check for Pb-free equivalents such as SY89429VJZ if environmental compliance is mandatory. Verify pinout compatibility with alternative frequency synthesizers if sourcing from different manufacturers. Ensure replacement parts support the same PECL output levels and VCO frequency ranges.