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72V841 - Block Diagram


4K x 9 DualSync FIFO, 3.3V

The 72V841is a 4K x 9 dual synchronous FIFO that is functionally equivalent to two 72V241 FIFOs in a single package with all associated control, data, and flag lines assigned to separate pins. Each FIFOs has a 9-bit input and output data port. The Read Clock can be tied to the Write Clock for single clock operation or the two clocks can run asynchronous of one another for dual clock operation.


  • Offers optimal combination of capacity, speed, and design flexibility in small footprint
  • Ideal for prioritization, bidirectional, and width expansion applications
  • 10 ns read/write cycle time
  • 5V input tolerant
  • Separate control lines and data lines for each FIFO
  • Separate Empty, Full, programmable Almost-Empty and Almost-Full flags for each FIFO
  • Enable puts output data lines in high-impedance state
  • Available in 64-pin TQFP and STQFP packages
  • Industrial temperature range (–40C to +85C) is available

Product Specification

Core Voltage (V)Bus Width (bits)Density (Kb)Pkg. CodeInterfaceI/O TypeI/O Frequency (MHz)Cycle Time (ns)OrganizationTemp. RangeArchitectureAccess Time (ns)
3.3936PPG64, PP64, PN64, PNG64Synchronous3.3 V LVTTL50.00, 66.00, 100.004K x 9-40 to 85°C, 0 to 70°CDual FIFO

Product Options

Orderable Part IDPart StatusPkg. CodePkg. TypeLead Count (#)Temp. GradePb (Lead) FreeCarrier TypeSample & Buy
72V841L10PFActivePN64TQFP64CNoTrayCheck Availability
72V841L10PF8ActivePN64TQFP64CNoReelCheck Availability
72V841L10PFGActivePNG64TQFP64CYesTrayCheck Availability
72V841L10PFG8ActivePNG64TQFP64CYesReelCheck Availability
72V841L10TFObsoletePP64TQFP64CNoTrayCheck Availability
72V841L10TF8ObsoletePP64TQFP64CNoReelCheck Availability
72V841L10TFGObsoletePPG64TQFP64CYesTrayCheck Availability
72V841L10TFG8ObsoletePPG64TQFP64CYesReelCheck Availability
72V841L15PFActivePN64TQFP64CNoTrayCheck Availability
72V841L15PF8ActivePN64TQFP64CNoReelCheck Availability
72V841L15PFGActivePNG64TQFP64CYesTrayCheck Availability
72V841L15PFG8ActivePNG64TQFP64CYesReelCheck Availability
72V841L15PFIActivePN64TQFP64INoTrayCheck Availability
72V841L15PFI8ActivePN64TQFP64INoReelCheck Availability
72V841L15TFObsoletePP64TQFP64CNoTrayCheck Availability
72V841L15TF8ObsoletePP64TQFP64CNoReelCheck Availability
72V841L15TFGIObsoletePPG64TQFP64IYesTrayCheck Availability
72V841L15TFGI8ObsoletePPG64TQFP64IYesReelCheck Availability
72V841L15TFIObsoletePP64TQFP64INoTrayCheck Availability
72V841L15TFI8ObsoletePP64TQFP64INoReelCheck Availability
72V841L20PFActivePN64TQFP64CNoTrayCheck Availability
72V841L20PF8ActivePN64TQFP64CNoReelCheck Availability
72V841L20TFObsoletePP64TQFP64CNoTrayCheck Availability
72V841L20TF8ObsoletePP64TQFP64CNoReelCheck Availability


Technical Documentation

Title Type Format File Size Datesort icon
Datasheets & Errata
72V801-72V851 Datasheet Datasheet PDF 166 KB Nov 6, 2014
PCN# : A1606-02 Add Greatek Taiwan as Alternate Assembly Product Change Notice PDF 567 KB Aug 26, 2016
PDN# CQ-14-05 MARKET DECLINED PRODUCT DISCONTINUANCE NOTICE Product Discontinuation Notice PDF 192 KB Sep 4, 2014
PDN# : CQ-14-02R2 Product Discontinuation Notice PDF 549 KB Aug 4, 2014
show all (19)
PDN# : CQ-14-02R1 PRODUCT DISCONTINUANCE NOTICE Product Discontinuation Notice PDF 545 KB Feb 11, 2014
PDN# : CQ-14-02 PRODUCT DISCONTINUANCE NOTICE Product Discontinuation Notice PDF 544 KB Jan 26, 2014
PCN#: A-0410-02, Change IDT marking logo with new IDT gridless w Product Change Notice PDF 24 KB Nov 14, 2012
PCN# : A-0610-02 ASAT China as Alternate Facility for CABGA/CVBGA/FPBGA/TQFP/PQFP Product Change Notice PDF 252 KB Oct 19, 2006
A-0603-04 Transfer TQFP and PQFP from ASAT HK to ASAT China Product Change Notice PDF 164 KB May 10, 2006
PCN A-0506-03; Packing Material Change Product Change Notice PDF 290 KB Jul 19, 2005
PCN#: A-0412-04 - To comply with Pb-free labels - Green Products Product Change Notice PDF 80 KB Dec 14, 2004
PCN#: A-0310-01, Green Products Product Change Notice PDF 26 KB Oct 10, 2003
PCN#: G-0302-06, New die attach 3230 from Ablestik Product Change Notice PDF 150 KB Mar 20, 2003
PCN#G-0302-05, New mold compound EME-G700 series Product Change Notice PDF 65 KB Mar 20, 2003
PCN# G-0206-08, Orientation of square PQFP & TQFP Product Change Notice PDF 150 KB Jun 17, 2002
PCN# F0202-04R1: Wafer Fabrication Site Change Product Change Notice PDF 50 KB Jun 1, 2002
PCN# G-0110-06 REV.1 Mold Compound Product Change Notice PDF 48 KB Apr 26, 2002
PCN# G-0110-06 Mold Compound Product Change Notice PDF 47 KB Dec 14, 2001
PCN# G0106-01, Moisture Sensitive Label Change Product Change Notice PDF 274 KB Jun 11, 2001
PCN# G9911-05, To qualify low alpha mold compound. Product Change Notice PDF 44 KB Nov 18, 1999

Software & Tools

Title Type Format File Size Datesort icon
72V841 HSPICE Model - HSPICE application/x-tar 32 KB Jun 28, 1999
72V841 IBIS Model - IBIS ZIP 10 KB Apr 21, 1999