Skip to main content
7140 - Block Diagram


1K x 8 Dual-Port RAM

The 7140 is a high-speed 1K x 8 Dual-Port Static RAM designed to be used as a “SLAVE” Dual-Port RAM together with the 7130 “MASTER” Dual-Port in 16-bit-or-more word width systems which would result in full-speed, error free operation without the need for additional discrete logic. An automatic power down feature, controlled by CE, permits the on chip circuitry of each port to enter a very low standby power mode. Military grade product in compliance with MIL-PRF-38535 QML is available.


  • True Dual-Ported memory cells which allow simultaneous access of the same memory location
  • BUSY input flag
  • INT flag for port-to-port communication
  • Fully asynchronous operation from either port
  • Battery backup operation–2V data retention (LA only)
  • TTL-compatible, single 5V ±10% power supply
  • Available in 48-pin DIP, LCC and Ceramic Flatpack, 52-pin PLCC, and 64-pin STQFP and TQFP packages
  • Industrial temperature range (–40C to +85C) is available

Product Specification

Core Voltage (V)Bus Width (bits)Density (Kb)Pkg. CodeInterfaceI/O TypeAccess Time (ns)I/O Frequency (MHz)Temp. RangeArchitectureOrganizationFunctionOutput Type
588PL52, PN64, PD48, SB48, LC48, PLG52, PDG48, PNG64, FP48Async5.0 V TTL20, 25, 35, 55, 100-55 to 125°C, -40 to 85°C, 0 to 70°CDual-Port1K x 8Interrupt, Busy, Slave

Product Options

Orderable Part IDPart StatusPkg. CodePkg. TypeLead Count (#)Temp. GradePb (Lead) FreeCarrier TypeSample & Buy
7140LA100CObsoleteSB48SB48CNoTubeCheck Availability
7140LA100CBActiveSB48SB48MNoTubeCheck Availability
7140LA100JActivePL52PLCC52CNoTubeCheck Availability
7140LA100J8ActivePL52PLCC52CNoReelCheck Availability
7140LA100L48BActiveLC48LCC48MNoTubeCheck Availability
7140LA100PObsoletePD48PDIP48CNoTubeCheck Availability
7140LA100PDGActivePDG48PDIP48CYesTubeCheck Availability
7140LA100PFActivePN64TQFP64CNoTrayCheck Availability
7140LA100PF8ActivePN64TQFP64CNoReelCheck Availability
7140LA20JActivePL52PLCC52CNoTubeCheck Availability
7140LA20J8ActivePL52PLCC52CNoReelCheck Availability
7140LA20JGActivePLG52PLCC52CYesTubeCheck Availability
7140LA20JG8ActivePLG52PLCC52CYesReelCheck Availability
7140LA20PFActivePN64TQFP64CNoTrayCheck Availability
7140LA20PF8ActivePN64TQFP64CNoReelCheck Availability
7140LA25JActivePL52PLCC52CNoTubeCheck Availability
7140LA25J8ActivePL52PLCC52CNoReelCheck Availability
7140LA25JIActivePL52PLCC52INoTubeCheck Availability
7140LA25JI8ActivePL52PLCC52INoReelCheck Availability
7140LA25PFActivePN64TQFP64CNoTrayCheck Availability
7140LA25PF8ActivePN64TQFP64CNoReelCheck Availability
7140LA25PFGActivePNG64TQFP64CYesTrayCheck Availability
7140LA25PFG8ActivePNG64TQFP64CYesReelCheck Availability
7140LA25PFIActivePN64TQFP64INoTrayCheck Availability
7140LA25PFI8ActivePN64TQFP64INoReelCheck Availability
7140LA35CObsoleteSB48SB48CNoTubeCheck Availability
7140LA35CBActiveSB48SB48MNoTubeCheck Availability
7140LA35FBActiveFP48FPACK48MNoTubeCheck Availability
7140LA35JActivePL52PLCC52CNoTubeCheck Availability
7140LA35J8ActivePL52PLCC52CNoReelCheck Availability
7140LA35L48BActiveLC48LCC48MNoTubeCheck Availability
7140LA35PObsoletePD48PDIP48CNoTubeCheck Availability
7140LA35PDGActivePDG48PDIP48CYesTubeCheck Availability
7140LA35PFActivePN64TQFP64CNoTrayCheck Availability
7140LA35PF8ActivePN64TQFP64CNoReelCheck Availability
7140LA55CObsoleteSB48SB48CNoTubeCheck Availability
7140LA55CBActiveSB48SB48MNoTubeCheck Availability
7140LA55JActivePL52PLCC52CNoTubeCheck Availability
7140LA55J8ActivePL52PLCC52CNoReelCheck Availability
7140LA55L48BActiveLC48LCC48MNoTubeCheck Availability
7140LA55PObsoletePD48PDIP48CNoTubeCheck Availability
7140LA55PFActivePN64TQFP64CNoTrayCheck Availability
7140LA55PF8ActivePN64TQFP64CNoReelCheck Availability
7140SA100CObsoleteSB48SB48CNoTubeCheck Availability
7140SA100CBActiveSB48SB48MNoTubeCheck Availability
7140SA100JActivePL52PLCC52CNoTubeCheck Availability
7140SA100J8ActivePL52PLCC52CNoReelCheck Availability
7140SA100L48BNot Recommended
LC48LCC48MNoTubeCheck Availability
7140SA100PObsoletePD48PDIP48CNoTubeCheck Availability
7140SA100PFActivePN64TQFP64CNoTrayCheck Availability


Technical Documentation

Title Type Format File Size Datesort icon
Datasheets & Errata
7130/40 Datasheet Datasheet PDF 928 KB Jun 3, 2016
Apps Notes & White Papers
AN-68, Dual-Port SRAM Simplifies PC-to-TMS320 Interface Application Note PDF 92 KB May 31, 2006
AN-70, Dual-Port Interrupt Expansion Application Note PDF 56 KB May 31, 2006
AN-91, The Most Commonly Asked Questions About Async Dual-Ports Application Note PDF 87 KB May 31, 2006
show all (5)
AN-253, Introduction to Multi-Port Memories Application Note PDF 36 KB May 30, 2006
AN-09, Dual-Port SRAMs Yield Bit-Slice Designs Application Note PDF 69 KB May 30, 2006
PCN# : A1510-01 Alternate Assembly at Greatek Electronics Taiwan Product Change Notice PDF 32 KB Nov 5, 2015
PDN# : SP-15-01R1 PRODUCT DISCONTINUANCE NOTICE Product Discontinuation Notice PDF 224 KB Sep 27, 2015
PDN# : SP-15-01 PRODUCT DISCONTINUANCE NOTICE Product Discontinuation Notice PDF 198 KB Aug 16, 2015
show all (25)
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
PCN# A-0607-06 MMT Thailand as Alternate Assembly Facility for PLCC, SOIC 150mil/300mil Product Change Notice PDF 223 KB Oct 6, 2006
PCN# : A-0605-05 AIT as Alternate Assembly Facility for SOIC/QSOP/SSOP/TSSOP/PDIP Product Change Notice PDF 298 KB May 25, 2006
A-0603-04 Transfer TQFP and PQFP from ASAT HK to ASAT China Product Change Notice PDF 164 KB May 10, 2006
PCN#: TB-0512-01 Reel Color Changed from Blue to Black Product Change Notice PDF 729 KB Dec 16, 2005
PCN A-0506-03; Packing Material Change Product Change Notice PDF 290 KB Jul 19, 2005
PCN#: A-0501-01, New m/c DMC-2000 and d/a 8390A for PDIP pkgs Product Change Notice PDF 42 KB Jan 25, 2005
PCN#: A-0412-04 - To comply with Pb-free labels - Green Products Product Change Notice PDF 80 KB Dec 14, 2004
PCN#:A-0309-06 Rev1, Hermetic transfer to ATP-P1 Product Change Notice PDF 44 KB Oct 15, 2004
PCN#: A-0305-04 Rev. 01, Tin Plating and Solder Dip Process at G Product Change Notice PDF 38 KB Mar 4, 2004
PCN#: A-0310-01, Green Products Product Change Notice PDF 26 KB Oct 10, 2003
PCN#: A-0309-04, new mold compound G600 material Product Change Notice PDF 134 KB Oct 7, 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# G-0110-06 REV.1 Mold Compound Product Change Notice PDF 48 KB Apr 26, 2002
PCN# G-0203-05 Mold Compound Product Change Notice PDF 40 KB Apr 16, 2002
PCN SM-0202-02 Wafer Fab Transfer, Fab 2 to Fab4 Product Change Notice PDF 40 KB Feb 25, 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
7140J PLCC HSpice Model Model - HSPICE application/x-tar 40 KB Feb 19, 1999
7140P PDIP HSpice Model Model - HSPICE application/x-tar 40 KB Feb 19, 1999
7140PF TQFP HSpice Model Model - HSPICE application/x-tar 40 KB Feb 19, 1999
7140J PLCC IBIS Model Model - IBIS ZIP 11 KB Jul 1, 1997
7140PF TQFP IBIS Model Model - IBIS ZIP 11 KB Jul 1, 1997