CY22394FXI

Clock Generators, PLLs, Frequency Synthesizers Overview

The CY22394FXI is a three-PLL, serial-programmable, flash-programmable clock generator manufactured by Infineon Technologies. It operates on a single 3.3 V supply and features one LVPECL output and four CMOS outputs in a 16-pin TSSOP package. The device supports input frequencies from 1 MHz to 150 MHz via reference clock or 8 MHz to 30 MHz via external crystal. Output frequencies range up to 375 MHz for the PECL channel and 166 MHz for CMOS channels. It includes configurable PLLs with ultra-wide divide counters, digital VCXO capabilities, and power management options.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Three integrated phase-locked loops (PLLs) with 11-bit P and 8-bit Q dividers
• One high-frequency LVPECL output and four CMOS outputs
• Two-wire serial interface for in-system configurability
• Flash programmability with external programmer support

Clock Generators, PLLs, Frequency Synthesizers Applications

• High-speed data communication systems requiring low jitter clocks
• Network infrastructure equipment
• Industrial control systems with multiple clock domain requirements

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific suffix 'FXI' against the manufacturer's current ordering guide to confirm package type and temperature grade. Ensure compatibility with the required I2C serial programming protocol if in-system configuration is planned. Check RoHS compliance status as per the latest datasheet revision.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when an LVPECL output is required alongside standard CMOS clocks. Compare against CY22393 if only CMOS outputs are needed, or CY22395 for mixed voltage levels. Confirm that the industrial temperature range (-40°C to +85°C) meets the application environment. Verify that the 150 MHz maximum reference input frequency is sufficient for the design.

Clock Generators, PLLs, Frequency Synthesizers Part Context

The CY22394FXI belongs to the CY22393/94/95 family of clock generators originally developed by Cypress Semiconductor, now part of Infineon Technologies. This family serves as an upgrade to the CY22392, offering enhanced programmability and advanced features like digital VCXO. The FXI suffix typically denotes the industrial temperature grade and TSSOP packaging.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

CY22393FXI provides identical functionality but lacks the LVPECL output. CY22395FXI offers mixed voltage outputs instead of LVPECL. Direct pin-to-pin replacements within the same package require verifying output driver compatibility and ensuring the new part supports the existing serial configuration file.