NOTICE - The following device(s) are recommended alternatives:
The 5P49V5908 is a programmable clock generator intended for high performance consumer, networking, industrial, computing, and data communications applications. Configurations may be stored in on-chip One-Time Programmable (OTP) memory or changed using I2C interface. This is IDTs fifth generation of programmable clock technology (VersaClock® 5). The frequencies are generated from a single reference clock or crystal.
Two select pins allow up to 4 different configurations to be programmed and accessible using processor GPIOs or bootstrapping. The different selections may be used for different operating modes (full function, partial function, partial power-down), regional standards (US, Japan, Europe) or system production margin testing. The device may be configured to use one of two I2C addresses to allow multiple devices to be used in a system. The device is packaged in a 48-pin 6mm x 6mm VFQFPN (NDG48), with an industrial operating temperature of -40 to +85°C.


  • Generates up to four independent output frequencies with a total of 11 differential outputs and one reference LVCMOS output
  • Supports multiple differential output I/O standards:
    • Three universal outputs pairs with each configurable as one differential output pair (LVDS, LVPECL or regular HCSL) or two LVCMOS outputs. Frequency of each output pair can be individually programmed
    • Eight copies of Low Power HCSL (LP-HCSL) outputs
  • Meets PCIe® Gen1/2/3, USB 3.0, 1/10 GbE clock requirements
  • <0.7 ps RMS typical phase jitter on outputs
  • Four fractional output dividers (FODs)
  • Independent Spread Spectrum capability from each fractional output divider (FOD)
  • Stores 4 different configurations in OTP non-volatile memory
  • Input frequency ranges up to 200 MHz
  • Output frequency ranges up to 350 MHz
  • Progammable loop bandwidth and crystal load capcaitance
  • 1.8 / 2.5 / 3.3V core and output voltages
  • Supported by IDT Timing Commander™ software tool

tuneProduct Options

This device is factory-configurable. Try the Custom Part Configuration Utility.
Part Number Part Status Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type Buy Sample
Not Recommended for New Designs VFQFPN 48 I Yes Tray
Not Recommended for New Designs VFQFPN 48 I Yes Reel
Not Recommended for New Designs VFQFPN 48 I Yes Tray
Not Recommended for New Designs VFQFPN 48 I Yes Reel


Title language Type Format File Size Date
Datasheets & Errata
star 5P49V5908 Datasheet Datasheet PDF 526 KB
User Guides & Manuals
VersaClock 5 Family Register Descriptions and Programming Guide Manual - Development Tools PDF 803 KB
VersaClock 5 Timing Commander Users Guide Manual - Software PDF 2.04 MB
Timing Commander Installation Guide Guide PDF 497 KB
Application Notes & White Papers
AN-1014 Microstrip vs Stripline: Crosstalk and RMS Phase Jitter Application Note PDF 486 KB
IDT Products for Wired Broadband Applications Application Brief PDF 686 KB
AN-975 Cascading PLLs Application Note PDF 255 KB
AN-970 Glitchless Frequency Adjustment using Fractional Output Divider Application Note PDF 717 KB
AN-909 PCB Layout Considerations for Designing IDT VersaClock 3S, 5 and 6 Clock Products Application Note PDF 901 KB
AN-918 Programmable Clocks vs Crystal Oscillators Application Note PDF 307 KB
AN-912 VersaClock 5 and VersaClock 6 In-System Programming Application Note PDF 144 KB
AN-879 Low-Power HCSL vs Traditional HCSL Application Note PDF 235 KB
AN-862 5P49V5901 Register Programming Guide Application Note PDF 176 KB
AN-844 Termination - AC Coupling Clock Receivers Application Note PDF 170 KB
AN-845 Termination - LVCMOS Application Note PDF 146 KB
AN-846 Termination - LVDS Application Note PDF 133 KB
AN-842 Thermal Considerations in Package Design and Selection Application Note PDF 495 KB
AN-815 Understanding Jitter Units Application Note PDF 565 KB
AN-806 Power Supply Noise Rejection Application Note PDF 438 KB
AN-808 PCI Express/HCSL Termination Application Note PDF 137 KB
PCN# : W1602-01 300mm wafer size from 200mm wafer size at Global Foundries Product Change Notice PDF 344 KB
PCN# : MM1510-01 Programming Configuration Change on Versa Clock Product Change Notice PDF 243 KB
VersaClock Family Overview 日本語 Overview PDF 376 KB
IDT Clock Generation Overview 日本語 Overview PDF 1.83 MB
5P49V5907 and 5P49V5908 VersaClock® 5 with Additional PCIe Outputs 简体中文 Product Brief PDF 1.01 MB


Title language Type Format File Size Date
Timing Commander Installer (v1.17) Software & Tools - Other ZIP 18.02 MB
VersaClock 5 Timing Commander Personality File Software & Tools - Other TCP 2.94 MB
5P49V5908 IBIS Model Model - IBIS ZIP 408 KB

memoryBoards & Kits

Part Number Title Type Company
EVKVC5-5908 Evaluation Board for 5P49V5908 VersaClock® 5 Evaluation Renesas