Ethernet Switch Clock Source

The 650-40A is a clock chip designed for use as a core clock in Ethernet Switch applications. Using IDT’s patented Phase-Locked Loop (PLL) techniques, the device takes a 25 MHz crystal input and produces various output clock frequencies as listed in Output Select Table.

Features

  • Packaged in 16-pin TSSOP
  • Operating voltage of 3.3 V
  • Low power consumption
  • Input frequency of 25 MHz
  • Low long-term jitter
  • Separate supply voltage for clock outputs (2.5 / 3.3 V
    clock outputs)
  • OE control capability

Product Options

Orderable Part ID Part Status Pkg. Code Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type Buy Sample
650G-40ALF Obsolete PGG16 TSSOP 16 C Yes Tube Availability
650G-40ALFT Obsolete PGG16 TSSOP 16 C Yes Reel Availability

Technical Documentation

Title Other Languages Type Format File Size Date
Datasheets & Errata
650-40A Datasheet Datasheet PDF 186 KB May 13, 2010
PCNs & PDNs
PCN# : TB1403-01 Changed in Carrier Tape, Plastic Reel and Quantity per Reel on TSSOP-14, TSSOP-16 Product Change Notice PDF 663 KB Apr 7, 2014
PDN# : U-12-03R4 PRODUCT DISCONTINUANCE NOTICE Product Discontinuation Notice PDF 72 KB Jun 19, 2013
PDN# : U-12-03R3 Product Discontinuation Notice PDF 72 KB Mar 30, 2013
PCN# : TB1303-02 Change of Tape & Reel Packing Method for Selective Products Product Change Notice PDF 361 KB Mar 23, 2013