IDT5V9885CNLGI

Clock Generators, PLLs, Frequency Synthesizers Overview

The IDT5V9885CNLGI is a 3.3V EEPROM programmable clock generator from Renesas (formerly IDT). It features three internal PLLs, each with an 8-bit pre-scaler and 12-bit feedback divider, enabling unique non-integer-related frequencies. The device supports input frequencies from 1MHz to 400MHz and output frequencies from 4.9kHz to 500MHz. Outputs include LVTTL/LVCMOS, LVPECL, and LVDS standards. It includes redundant clock inputs with glitchless switchover, JTAG boundary scan, and I2C programming interfaces.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Three independent PLLs with spread spectrum generation on two of them
• Internal non-volatile EEPROM for configuration storage
• Supports I2C and JTAG serial programming interfaces
• Redundant clock inputs with automatic or manual switchover

Clock Generators, PLLs, Frequency Synthesizers Applications

• High performance data-communications systems
• Telecommunications equipment
• Consumer electronics
• Networking applications

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific package variant against the datasheet. The 'NL' suffix typically indicates a VFQFPN package, while other suffixes may denote TQFP. Confirm the industrial temperature range (-40°C to +85°C) matches system requirements. Check for end-of-life status as this component series has been superseded by newer VersaClock families.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select based on required output interface types (LVDS/LVPECL vs LVTTL) and frequency ranges. Ensure the reference clock source (crystal or external) aligns with the XTALIN/REFIN pin capabilities. Consider loop bandwidth programmability for jitter attenuation versus generation needs. Verify that the available output banks can accommodate the necessary number of differential pairs if LVDS/LVPECL is required.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the IDT5V9885 family of programmable clock generators. It is designed to replace older fixed-frequency oscillators in complex digital systems requiring multiple synchronized clocks. The integration of EEPROM allows for in-system reprogramming without external memory devices.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Public confirmed substitute part numbers: IDT5V9885T. Note that the base part number IDT5V9885 covers the core functionality; verify package and temperature grade compatibility when substituting.