Clocks & Timing

Overview

The 8T74S208C-01 is a high-performance differential LVDS clock divider and fanout buffer. The device is designed for the frequency division and signal fanout of high-frequency, low phase-noise clocks. The 8T74S208C-01 is characterized to operate from a 2.5V power supply. Guaranteed output-to-output and part-to-part skew characteristics make the 8T74S208C-01 ideal for those clock distribution applications demanding well-defined performance and repeatability. The integrated input termination resistors make interfacing to the reference source easy and reduce passive component count. Each output can be individually enabled or disabled in the high-impedance state controlled by a I2C register. On power-up, all outputs are disabled.

8T74S208C-01 - Block Diagram
8T74S208C-01 - Pin Assignment
8T74S208C-01 - Block Diagram
8T74S208C-01 - Pin Assignment
  • One differential input reference clock
  • Differential pair can accept the following differential input levels:
    LVDS, LVPECL, CML
  • Integrated input termination resistors
  • Eight LVDS outputs
  • Selectable clock frequency division of ÷1, ÷2, ÷4 and ÷8
  • Maximum input clock frequency: 1GHz
  • LVCMOS interface levels for the control inputs
  • Individual output enabled/ disabled by I2C interface
  • Output skew: 45ps (maximum)
  • Output rise/fall times: 370ps (maximum)
  • Low additive phase jitter, RMS: 96fs (typical)
  • Full 2.5V supply voltage
  • Outputs disabled at power-up
  • Lead-free (RoHS 6) 32-Lead VFQFN packaging
  • -40°C to 85°C ambient operating temperature

Documentation

Title Type Date
8T74S208C-01 Datasheet
PDF558 KB
Datasheet
AN-827 Application Relevance of Clock Jitter
PDF1.99 MB
Application Note
AN-844 Termination - AC Coupling Clock Receivers
PDF170 KB
Application Note
AN-842 Thermal Considerations in Package Design and Selection
PDF495 KB
Application Note
AN-840 Jitter Specifications for Timing Signals
PDF442 KB
Application Note
AN-834 Hot-Swap Recommendations
PDF153 KB
Application Note
AN-815 Understanding Jitter Units
PDF565 KB
Application Note
AN-805 Recommended Ferrite Beads
PDF121 KB
Application Note
Clock Distribution Overview
PDF217 KB
Overview
IDT Clock Generation Overview
PDF1.83 MB
Overview
PCN# : 220015 Add Alternate Assembly Location on VFQFPN Packages
PDF728 KB
Product Change Notice
PCN# : A1904-01 Add Greatek, Taiwan as an Alternate Assembly Facility
PDF983 KB
Product Change Notice
PCN# : A1611-02 Add JCET China as Alternate Assembly and Change of Material Set at Alternate Assembly Location
PDF583 KB
Product Change Notice
PCN# : N1608-01 Redesign of 8T74S208A-01
PDF36 KB
Product Change Notice
PCN# : A1511-01(R1) Add SPEL India as Alternate Assembly Location
PDF596 KB
Product Change Notice
PCN# : A1511-01 Add SPEL India as Alternate Assembly Location
PDF544 KB
Product Change Notice
PCN# : N1508-01 Die revision change, 8T73S208-01NLGI (8) / 8T74S208-01NLGI (8)
PDF761 KB
Product Change Notice
info: For device-specific or order-specific documentation, submit a support request.

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