CY2071ASL-619

Clock Generators, PLLs, Frequency Synthesizers Overview

The CY2071ASL-619 is a high-performance, low-power clock generator and jitter attenuator designed for PCI Express (PCIe) applications. It generates multiple differential LVPECL/LVDS outputs from a single reference input, typically a crystal oscillator or external clock. The device integrates a Phase-Locked Loop (PLL) with a built-in voltage-controlled oscillator (VCO) to synthesize precise frequencies required by PCIe Gen1 and Gen2 interfaces. Key electrical parameters include an output frequency range of 25 MHz to 400 MHz, with specific configurations optimized for 100 MHz and 125 MHz reference inputs. The device operates at a supply voltage of 3.3V and features low jitter performance, critical for maintaining signal integrity in high-speed serial links.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Generates multiple differential LVPECL/LVDS outputs for PCIe clock distribution
• Integrates PLL with VCO for low-jitter clock synthesis
• Supports 25 MHz to 400 MHz output frequency range
• Optimized for PCI Express Gen1 and Gen2 compliance

Clock Generators, PLLs, Frequency Synthesizers Applications

• PCI Express root complex clock generation
• PCI Express switch clock distribution
• High-speed data acquisition systems requiring low-jitter clocks
• Telecommunications equipment using PCIe interfaces

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the exact suffix 'SL-619' against manufacturer documentation to confirm pinout, package type (typically SOIC or TSSOP), and temperature grade. Ensure the reference input configuration matches the design requirements, as the CY2071 family may have variants with different input/output configurations. Cross-reference with official Cypress/Infineon datasheets for electrical characteristics and mechanical drawings before procurement.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when designing PCIe-based systems requiring a single reference input to drive multiple downstream devices with low jitter. Confirm that the required output frequencies align with the device's synthesis capabilities. Consider power consumption and thermal dissipation if operating in dense PCB layouts. Verify compatibility with the system's reference clock source, typically a 25 MHz or 100 MHz crystal oscillator.

Clock Generators, PLLs, Frequency Synthesizers Part Context

The CY2071 series belongs to Cypress Semiconductor's portfolio of clock generators and jitter attenuators, specifically tailored for high-speed digital interfaces like PCIe. These devices are part of a broader family that includes variants with different output counts and formats. The CY2071ASL-619 represents a specific configuration within this family, optimized for standard PCIe clocking needs.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Check for direct replacements such as other CY2071 variants with compatible pinouts and electrical specifications. Infineon, the current owner of Cypress products, may offer updated generations with improved performance or packaging. Ensure any substitute maintains the same jitter performance and output format (LVPECL/LVDS) to avoid redesigning the clock distribution network.