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72V291 - Block Diagram

72V291

128K x 9 SuperSync FIFO, 3.3V

The 72V291 is a 128K x 9 SuperSync FIFO memory with clocked read and write controls. It’s a functionally compatible version of the 72291 designed to run off a 3.3V supply for very low power consumption. The Frequency Select pin (FS) has been removed, thus it is no longer necessary to select which of the two clock inputs, RCLK or WCLK, is running at the higher frequency. The period required by the retransmit operation and the first word data latency period is now fixed and short. (The variable clock cycle counting delay associated with the latency period found on previous SuperSync devices has been eliminated on this SuperSync family.)

Features

  • Pin-compatible with the 72V2x1and IDT72V21x1 SuperSync FIFOs
  • Functionally compatible with the 5 Volt 72291
  • 10ns read/write cycle time (6.5ns access time)
  • Fixed, low first word data latency time
  • 5V input tolerant
  • Auto power down minimizes standby power consumption
  • Retransmit operation with fixed, low first word data latency time
  • Empty, Full and Half-Full flags signal FIFO status
  • Programmable Almost-Empty and Almost-Full flags
  • Easily expandable in depth and width
  • Independent Read and Write clocks (permit reading and writing simultaneously)
  • 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)
3.391024PP64, PN64, PPG64Synchronous3.3 V LVTTL50.00, 66.00, 100.00128K x 9-40 to 85°C, 0 to 70°CUni-directional

Product Options

Orderable Part IDPart StatusPkg. CodePkg. TypeLead Count (#)Temp. GradePb (Lead) FreeCarrier TypeSample & Buy
72V291L10PFActivePN64TQFP64CNoTrayCheck Availability
72V291L10PF8ActivePN64TQFP64CNoReelCheck Availability
72V291L10TFActivePP64TQFP64CNoTrayCheck Availability
72V291L10TF8ActivePP64TQFP64CNoReelCheck Availability
72V291L10TFGActivePPG64TQFP64CYesTrayCheck Availability
72V291L10TFG8ActivePPG64TQFP64CYesReelCheck Availability
72V291L15PFActivePN64TQFP64CNoTrayCheck Availability
72V291L15PF8ActivePN64TQFP64CNoReelCheck Availability
72V291L15PFINot Recommended
PN64TQFP64INoTrayCheck Availability
72V291L15PFI8Not Recommended
PN64TQFP64INoReelCheck Availability
72V291L15TFActivePP64TQFP64CNoTrayCheck Availability
72V291L15TF8ActivePP64TQFP64CNoReelCheck Availability
72V291L15TFIActivePP64TQFP64INoTrayCheck Availability
72V291L15TFI8ActivePP64TQFP64INoReelCheck Availability
72V291L20PFActivePN64TQFP64CNoTrayCheck Availability
72V291L20PF8ActivePN64TQFP64CNoReelCheck Availability
72V291L20TFActivePP64TQFP64CNoTrayCheck Availability
72V291L20TF8ActivePP64TQFP64CNoReelCheck Availability

Documents

Technical Documentation

Title Type Format File Size Datesort icon
Datasheets & Errata
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72V281/72V291 Datasheet Datasheet PDF 222 KB Oct 31, 2014
PCNs & PDNs
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PCN# : A1602-01(R1) Add Greatek Taiwan as Alternate Assembly Product Change Notice PDF 611 KB Apr 14, 2016
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PCN# : A1602-01 Add Greatek Taiwan as Alternate Assembly Product Change Notice PDF 611 KB Feb 15, 2016
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PCN# : TB1504-01R1 Qty per Reel Standardization for Selective Packages Product Change Notice PDF 95 KB Oct 22, 2015
show all (17)
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PCN# : TB1504-01 Qty per Reel Standardization for Selective Packages Product Change Notice PDF 50 KB Jul 21, 2015
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PCN#: A-0410-02, Change IDT marking logo with new IDT gridless w Product Change Notice PDF 24 KB Nov 14, 2012
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PCN# : A-0610-02 ASAT China as Alternate Facility for CABGA/CVBGA/FPBGA/TQFP/PQFP Product Change Notice PDF 252 KB Oct 19, 2006
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A-0603-04 Transfer TQFP and PQFP from ASAT HK to ASAT China Product Change Notice PDF 164 KB May 10, 2006
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PCN A-0506-03; Packing Material Change Product Change Notice PDF 290 KB Jul 19, 2005
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PCN#: A-0412-04 - To comply with Pb-free labels - Green Products Product Change Notice PDF 80 KB Dec 14, 2004
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PCN#: A-0310-01, Green Products Product Change Notice PDF 26 KB Oct 10, 2003
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PCN#G-0302-05, New mold compound EME-G700 series Product Change Notice PDF 65 KB Mar 20, 2003
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PCN#: G-0302-06, New die attach 3230 from Ablestik Product Change Notice PDF 150 KB Mar 20, 2003
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PCN# G-0206-08, Orientation of square PQFP & TQFP Product Change Notice PDF 150 KB Jun 17, 2002
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PCN# G-0110-06 REV.1 Mold Compound Product Change Notice PDF 48 KB Apr 26, 2002
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PCN# G-0110-06 Mold Compound Product Change Notice PDF 47 KB Dec 14, 2001
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PCN# G0106-01, Moisture Sensitive Label Change Product Change Notice PDF 274 KB Jun 11, 2001
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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
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72V291 HSPICE Model - HSPICE application/x-tar 32 KB Jun 28, 1999
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72V291 IBIS Model - IBIS ZIP 10 KB Jan 22, 1999