Clocks & Timing

Overview

The 2402 is a high-performance Zero Delay Buffer (ZDB) which integrates IDT's proprietary analog/digital Phase-Locked Loop (PLL) techniques. The chip is part of IDT's ClockBlocksTM family and was designed as a performance upgrade to meet today's higher speed and lower voltage requirements. The zero delay feature means that the rising edge of the input clock aligns with the rising edges of both output clocks, giving the appearance of no delay through the device. The 2402 is ideal for synchronizing outputs in a large variety of systems, from personal computers to data communications to graphics/video. By allowing off-chip feedback paths, the device can eliminate the delay through other devices.

2402 - Block Diagram
2402 - Pinout
2402 - Block Diagram
2402 - Pinout
  • 8-pin SOIC package - Pb-free, RoHS compliant
  • Absolute jitter ±100 ps
  • Propagation Delay of ±600 ps
  • Output multiplier of 2X
  • Output clock frequency up to 80 MHz
  • Can recover degraded input clock duty cycle
  • Output clock duty cycle of 45/55
  • Full CMOS clock swings with 25 mA drive capability at TTL levels
  • Advanced, low power CMOS process
  • Operating voltage of 3.3 V or 5 V

Documentation

Title Type Date
2402 Datasheet
PDF236 KB
Datasheet
AN-805 Recommended Ferrite Beads
PDF91 KB
Application Note
AN-827 Application Relevance of Clock Jitter
PDF1.99 MB
Application Note
AN-828 Termination - LVPECL
PDF322 KB
Application Note
AN-844 Termination - AC Coupling Clock Receivers
PDF170 KB
Application Note
AN-845 Termination - LVCMOS
PDF146 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
System Applications and Design Guidelines with IDT’s Zero-Delay Buffers
PDF294 KB
Application Note
PDN# : CQ-18-03 Product Discontinuance Notice
PDF218 KB
End Of Life Notice
Clock Distribution Overview
PDF217 KB
Overview
IDT Clock Generation Overview
PDF1.83 MB
Overview
PCN# : A1602-01(R1) Add Greatek Taiwan as Alternate Assembly
PDF611 KB
Product Change Notice
PCN# : A1602-01 Add Greatek Taiwan as Alternate Assembly
PDF611 KB
Product Change Notice
PCN# : TB1504-01R1 Qty per Reel Standardization for Selective Packages
PDF95 KB
Product Change Notice
PCN# : TB1504-01 Qty per Reel Standardization for Selective Packages
PDF50 KB
Product Change Notice
PCN# : TB1303-02 Change of Tape & Reel Packing Method for Selective Products
PDF361 KB
Product Change Notice
PCN# : A1208-01R1 Gold to Copper Wire
PDF254 KB
Product Change Notice
PCN# A-0607-06 MMT Thailand as Alternate Assembly Facility for PLCC, SOIC 150mil/300mil
PDF223 KB
Product Change Notice

Design & Development

Software Downloads

Title Type Date
PDN# : CQ-18-03 Product Discontinuance Notice
PDF218 KB
End Of Life Notice

ECAD Models

Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.

Explore ECAD Models

Product Options

    Processing table
    Part Number
    Pkg. Type
    Lead Count (#)
    Temp. Grade
    Pb (Lead) Free
    Carrier Type
    Buy / Sample
    2402MLF
    block_flippedObsolete
    memory
    view_in_ar
    		8 C Yes Tube
    2402MLFT
    block_flippedObsolete
    memory
    view_in_ar
    		8 C Yes Reel
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