Clocks & Timing

Overview

The 85104I is a low skew, high performance 1-to-4 Differential/LVCMOS-to-0.7V HCSL Fanout Buffer. The 85104I has two selectable clock inputs. The CLK0, nCLK0 pair can accept most standard differential input levels. The single-ended CLK1 can accept LVCMOS or LVTTL input levels. The clock enable is internally synchronized to eliminate runt clock pulses on the outputs during asynchronous assertion/deassertion of the clock enable pin. Guaranteed output and part-to-part skew characteristics make the 85104I ideal for those applications demanding well defined performance and repeatability.

85104I - Block Diagram
85104I - Pinout
85104I - Block Diagram
85104I - Pinout
  • Four 0.7V differential HCSL outputs
  • Selectable differential CLK0, nCLK0 or LVCMOS inputs
  • CLK0, nCLK0 pair can accept the following differential input levels: LVPECL, LVDS, LVHSTL, HCSL
  • CLK1 can accept the following input levels: LVCMOS or LVTTL
  • Maximum output frequency: 500MHz
  • Translates any single-ended input signal to 3.3V HCSL levels with resistor bias on nCLK input
  • Output skew: 100ps (maximum)
  • Part-to-part skew: 600ps (maximum)
  • Propagation delay: 3.2ns (maximum)
  • Additive phase jitter, RMS: 0.22ps (typical)
  • 3.3V operating supply
  • -40°C to 85°C ambient operating temperature
  • Available in lead-free (RoHS 6) package

Documentation

Title Type Date
85104I Datasheet
PDF312 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-842 Thermal Considerations in Package Design and Selection
PDF495 KB
Application Note
AN-840 Jitter Specifications for Timing Signals
PDF442 KB
Application Note
AN-833 Differential Input Self Oscillation Prevention
PDF180 KB
Application Note
AN-834 Hot-Swap Recommendations
PDF153 KB
Application Note
AN-835 Differential Input with VCMR being VIH Referenced
PDF160 KB
Application Note
AN-836 Differential Input to Accept Single-ended Levels
PDF120 KB
Application Note
AN-815 Understanding Jitter Units
PDF565 KB
Application Note
PLC# : 230006 - End-of-Life (EOL) process on select part numbers
PDF1.07 MB
End Of Life Notice
PDN# : N-12-22R2 PRODUCT DISCONTINUANCE NOTICE
PDF363 KB
End Of Life Notice
PDN# : N-12-22R1 PRODUCT DISCONTINUANCE NOTICE
PDF209 KB
End Of Life Notice
Clock Distribution Overview
PDF217 KB
Overview
IDT Clock Generation Overview
PDF1.83 MB
Overview
IDT Fanout Buffers Product Overview
PDF739 KB
Product Brief
High-Performance, Low-Phase Noise Clocks Buffers product brief
PDF378 KB
Product Brief
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# : 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# : TB1503-01R1 Carrier Tape Standardization for Selective Packages
PDF333 KB
Product Change Notice
PCN# : TB1504-01R1 Qty per Reel Standardization for Selective Packages
PDF95 KB
Product Change Notice
PCN# : TB1503-01 Carrier Tape Standardization for Selective Packages
PDF291 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

Design & Development

Software Downloads

Title Type Date
PLC# : 230006 - End-of-Life (EOL) process on select part numbers
PDF1.07 MB
End Of Life Notice
PDN# : N-12-22R2 PRODUCT DISCONTINUANCE NOTICE
PDF363 KB
End Of Life Notice
PDN# : N-12-22R1 PRODUCT DISCONTINUANCE NOTICE
PDF209 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

Models

Title Type Date
85104i IBIS Model
ZIP43 KB
Model - IBIS

Product Options

    Processing table
    Part Number
    Pkg. Type
    Lead Count (#)
    Temp. Grade
    Pb (Lead) Free
    Carrier Type
    Buy / Sample
    85104AGILF
    block_flippedObsolete
    memory
    view_in_ar
    		TSSOP 20 I Yes Tube
    85104AGILFT
    block_flippedObsolete
    memory
    view_in_ar
    		TSSOP 20 I Yes Reel
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