The ICS845264I is a 3.3V, 2.5V CML clock generator designed for Ethernet applications. The device synthesizes four clock frequencies on two separately selectable output banks. Each bank has either a 62.5MHz, 125MHz, 156.25MHz or 312.5MHz clock signal with excellent phase jitter performance. Each clock frequency is distributed to two low-skew differential CML output banks with a total of four outputs. The device is suitable for driving the reference clocks of Ethernet PHYs. The device supports 3.3V and 2.5V voltage supply and is packaged in a small, lead-free (RoHS 6) 32-lead VFQFN package. The extended temperature range supports telecommunication, wireless infrastructure and networking end equipment requirements.

Features

  • Clock generation of: 62.5MHz, 125MHz, 156.25MHz and 312.5MHz
  • Two banks of two differential CML clock outputs
  • Crystal interface designed for 25MHz, 12pF parallel resonant crystal
  • RMS phase jitter @ 125MHz, using a 25MHz crystal (1.875MHz – 20MHz): 0.486ps (typical)
  • Offset Single-side Band Phase Noise
100Hz ............................-97 dBc/Hz
1kHz...............................-118 dBc/Hz
10kHz.............................-125 dBc/Hz
100kHz...........................-123 dBc/Hz
  • LVCMOS interface levels for the control inputs
  • Full 3.3V and 2.5V supply voltage
  • Lead-free (RoHS 6) 32 VFQFN packaging
  • -40°C to 85°C ambient operating temperature

Product Options

Orderable Part ID Part Status Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type Package Buy Sample
845264AKILF Obsolete VFQFPN 32 I Yes Tray Package Info
Availability
845264AKILFT Obsolete VFQFPN 32 I Yes Reel Package Info
Availability

Documentation & Downloads

Title Other Languages Type Format File Size Date
Datasheets & Errata
845264 Datasheet Datasheet PDF 498 KB
Other
Timing Solutions Products Overview Overview PDF 4.11 MB
IDT Products for Radio Applications 日本語 Product Brief PDF 2.34 MB
IDT Clock Generation Overview 日本語 Overview PDF 1.83 MB
IDT Clock Distribution Overview 日本語 Overview PDF 3.79 MB