271PGLFT

Overview

The Renesas 271PGLFT is a triple PLL field programmable VCXO clock synthesizer designed for generating high-frequency clock outputs. It features up to six output channels, including multiple reference clocks, derived from a low-frequency input. The device utilizes a 20-TSSOP surface-mount package and operates within standard industrial temperature ranges. Key electrical characteristics include a supply voltage range of 3.0 V to 3.6 V and a maximum power consumption of 100 mA. The component supports asynchronous operation with a typical access time of 25 ns, ensuring reliable signal integrity for precision timing applications.

Feature Summary

• Generates up to six high-quality, high-frequency clock outputs from a single low-frequency input
• Integrates triple phase-locked loops (PLLs) for precise frequency synthesis and jitter reduction
• Field programmable architecture allows flexible configuration of output frequencies and phases
• Includes voltage-controlled crystal oscillator (VCXO) functionality for dynamic frequency adjustment

Applications

• High-speed serial communication interfaces requiring precise clock distribution
• Data acquisition systems needing stable reference clock generation
• Telecommunications equipment utilizing frequency synthesis for signal processing
• Test and measurement instruments requiring low-jitter clock sources

Procurement Notes

Verify the specific suffix and revision level against the latest Renesas datasheet to ensure compatibility with current design requirements. Confirm that the 20-TSSOP package dimensions align with your PCB footprint specifications. Check for any recent product lifecycle updates or recommended replacement parts, as clock synthesizers may undergo obsolescence transitions. Ensure that the operating temperature range meets your environmental constraints before finalizing procurement orders.

Selection Notes

Select this component when multiple synchronized clock outputs are required from a single source with minimal jitter. Consider the triple PLL architecture if phase alignment between outputs is critical for your system performance. Evaluate the field-programmable nature to accommodate potential future frequency changes without hardware modifications. Compare power consumption metrics against system budget constraints, noting the 100 mA maximum draw during active operation.

Part Context

The 271PGLFT belongs to Renesas' family of advanced clock synthesizers, targeting applications demanding high-frequency stability and flexibility. It complements other timing solutions by offering integrated VCXO capabilities within a compact TSSOP package. This series is commonly used in scenarios where traditional fixed-frequency oscillators lack the necessary adaptability for complex multi-channel clocking architectures.

Replacement Considerations

Consult official Renesas documentation for direct pin-to-pin replacements or upgraded generations within the 271 series. Verify functional equivalence regarding output count and frequency range if substituting with similar models. Avoid generic cross-references unless explicitly validated by manufacturer data sheets.