NOTICE - The following device(s) are recommended alternatives:
5PB1110 - 1.8 V to 3.3 V 1:10 LVCMOS High Performance Clock Buffer
Functional replacement

The 83947I-147 is a low skew, 1-to-9 LVCMOS/LVTTL Fanout Buffer. The low impedance LVCMOS/LVTTL outputs are designed to drive 50Ω series or parallel terminated transmission lines. The effective fanout can be increased from 9 to 18 by utilizing the ability of the outputs to drive two series terminated lines. Guaranteed output and part-to-part skew characteristics make the 83947I-147 ideal for high performance, 3.3V or 2.5V single ended applications.

Features

  • 9 LVCMOS/LVTTL outputs
  • Selectable CLK0 and CLK1 can accept the following input levels: LVCMOS and LVTTL
  • Maximum output frequency: 250MHz
  • Output skew: 115ps (maximum)
  • Part-to-part skew: 500ps (maximum)
  • Additive phase jitter, RMS: 0.02ps (typical) @ 3.3V
  • Full 3.3V or 2.5V operating supply
  • -40°C to 85°C ambient operating temperature

tuneProduct Options

Part Number Part Status Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type Buy Sample
83947AYI-147LF
Package Info
PCB Symbol, Footprint, and 3D Model
Obsolete TQFP 32 I Yes Tray
Availability
Buy / Quote
83947AYI-147LFT
Package Info
PCB Symbol, Footprint, and 3D Model
Obsolete TQFP 32 I Yes Reel
Availability
Buy / Quote

descriptionDocumentation

Title language Type Format File Size Date
Datasheets & Errata
star ICS83947I-147 Datasheet – Datasheet PDF 291 KB
Application Notes & White Papers
AN-828 Termination - LVPECL – Application Note PDF 322 KB
AN-844 Termination - AC Coupling Clock Receivers – Application Note PDF 170 KB
AN-845 Termination - LVCMOS – Application Note PDF 146 KB
AN-842 Thermal Considerations in Package Design and Selection – Application Note PDF 495 KB
AN-840 Jitter Specifications for Timing Signals – Application Note PDF 442 KB
AN-833 Differential Input Self Oscillation Prevention – Application Note PDF 180 KB
AN-834 Hot-Swap Recommendations – Application Note PDF 153 KB
AN-835 Differential Input with VCMR being VIH Referenced – Application Note PDF 160 KB
AN-836 Differential Input to Accept Single-ended Levels – Application Note PDF 120 KB
AN-815 Understanding Jitter Units – Application Note PDF 565 KB
AN-827 Application Relevance of Clock Jitter – Application Note PDF 1.15 MB
AN-805 Recommended Ferrite Beads – Application Note PDF 121 KB
PCNs & PDNs
PDN# : TP-20-05(R1) Revised PDN - Change Replacement for 85411AMLF(T) from 5PB1102CMGI(8) to 8SLVP1102ANLGI(8) – Product Discontinuation Notice PDF 743 KB
PDN# : TP-20-05 End-of-Life (EOL) Process on Select Part Numbers – Product Discontinuation Notice PDF 715 KB
PCN# : A1602-01(R1) Add Greatek Taiwan as Alternate Assembly – Product Change Notice PDF 611 KB
PCN# : A1602-01 Add Greatek Taiwan as Alternate Assembly – Product Change Notice PDF 611 KB
PCN# : TB1504-01R1 Qty per Reel Standardization for Selective Packages – Product Change Notice PDF 95 KB
PCN# : TB1504-01 Qty per Reel Standardization for Selective Packages – Product Change Notice PDF 50 KB
PCN# : A1401-02 Alternate Copper Wire Assembly Site – Product Change Notice PDF 36 KB
PCN# : A1309-01 Changed of Traceability Mark Format – Product Change Notice PDF 439 KB
PCN# : TB1303-01 Change of Carrier Tape for TQFP-32, TQFP-48 – Product Change Notice PDF 472 KB
Other
Clock Distribution Overview 日本語 Overview PDF 217 KB
IDT Clock Generation Overview 日本語 Overview PDF 1.83 MB
IDT Fanout Buffers Product Overview – Product Brief PDF 739 KB
High-Performance, Low-Phase Noise Clocks Buffers product brief – Product Brief PDF 378 KB
info: For device-specific or order-specific documentation, submit a support request.

file_downloadDownloads

Title language Type Format File Size Date
Models
83947i-147 IBIS Model – Model - IBIS ZIP 19 KB

printNews & Additional Resources

Type Date
An Insider’s Guide to Finding the Right Timing Device for Your System Blog Post Dec 18, 2017
Why Fanout Buffers Make More Sense Blog Post Nov 28, 2017