CY22381KFXI

Clock Generators, PLLs, Frequency Synthesizers Overview

The CY22381KFXI is a three-PLL general-purpose FLASH programmable clock generator manufactured by Cypress Semiconductor Corp. It operates on a 3.3 V power supply and supports input frequencies from 1 MHz to 166 MHz via an external clock or 8–30 MHz via a crystal. The device provides up to three configurable output clocks derived from integrated phase-locked loops, featuring ultra-wide divide counters for precise frequency synthesis. Designed for low-jitter performance, it includes power-management options such as shutdown and suspend modes.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Three integrated phase-locked loops driving three programmable output clocks
• FLASH programmability allowing field reconfiguration without external memory
• Supports LVTTL input signals and crystal oscillators (8–30 MHz) or external clocks (1–166 MHz)
• Low-jitter, high-accuracy outputs with configurable drive strength

Clock Generators, PLLs, Frequency Synthesizers Applications

• Networking equipment clock distribution
• Telecommunication systems timing
• Datacom applications requiring precise clock synthesis

Clock Generators, PLLs, Frequency Synthesizers Part Context

The CY22381KFXI belongs to the CY22381 family of universal programmable clock generators. This series is designed to replace fixed-frequency oscillators in complex digital systems, offering flexibility through software-programmable parameters. The 'FXI' suffix typically denotes specific packaging and temperature range variations within the Infineon/Cypress portfolio.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct replacements include other CY22381 variants such as CY22381FC or CY22381SI-XXXT, provided pin compatibility and electrical specifications match. Verify that the substitute supports the required input/output frequency ranges and package type (SOIC-8).