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71V65903 - Block Diagram


3.3V 512K x 18 ZBT Synchronous 3.3V I/O Flowthrough SRAM

The 71V65903 3.3V CMOS SRAM is organized as 512K x 18. It is designed to eliminate dead bus cycles when turning the bus around between reads and writes, or writes and reads. Thus it has been given the name ZBTTM, or Zero Bus Turnaround. The 71V65903 contain address, data-in and control signal registers. In the burst mode, it can provide four cycles of data for a single address presented to the SRAM.


  • High performance system speed - 100 MHz
  • (7.5 ns Clock-to-Data Access)
  • ZBTTM Feature - No dead cycles between write and read
  • cycles
  • Internally synchronized output buffer enable eliminates the need to control OE
  • Single R/W (READ/WRITE) control pin
  • 4-word burst capability (Interleaved or linear)
  • Individual byte write (BW1 - BW4) control (May tie active)
  • Three chip enables for simple depth expansion
  • 3.3V power supply (±5%)
  • 3.3V (±5%) I/O Supply (VDDQ)
  • Power down controlled by ZZ input
  • Available in 100-pin TQFP, 119-pin BGA and 165 fpBGA packages

Product Specification

Density (Kb)Bus Width (bits)Core Voltage (V)Pkg. CodeOrganizationI/O Voltage (V)Cycle Time (ns)I/O Frequency (MHz)Temp. RangeArchitectureOutput Type
512183.3BQ165, BGG119, BQG165, PKG100, BG119512K x 182.5080, 85-40 to 85°C, 0 to 70°CZBTFlowthrough

Product Options

Orderable Part IDPart StatusPkg. CodePkg. TypeLead Count (#)Temp. GradePb (Lead) FreeCarrier TypeSample & Buy
71V65903S80BGActiveBG119PBGA119CNoTrayCheck Availability
71V65903S80BG8ActiveBG119PBGA119CNoReelCheck Availability
71V65903S80BGIActiveBG119PBGA119INoTrayCheck Availability
71V65903S80BGI8ActiveBG119PBGA119INoReelCheck Availability
71V65903S80BQActiveBQ165CABGA165CNoTrayCheck Availability
71V65903S80BQ8ActiveBQ165CABGA165CNoReelCheck Availability
71V65903S80BQGActiveBQG165CABGA165CYesTrayCheck Availability
71V65903S80BQG8ActiveBQG165CABGA165CYesReelCheck Availability
71V65903S80PFGActivePKG100TQFP100CYesTrayCheck Availability
71V65903S80PFG8ActivePKG100TQFP100CYesReelCheck Availability
71V65903S80PFGIActivePKG100TQFP100IYesTrayCheck Availability
71V65903S80PFGI8ActivePKG100TQFP100IYesReelCheck Availability
71V65903S85BGActiveBG119PBGA119CNoTrayCheck Availability
71V65903S85BG8ActiveBG119PBGA119CNoReelCheck Availability
71V65903S85BGGActiveBGG119PBGA119CYesTrayCheck Availability
71V65903S85BGG8ActiveBGG119PBGA119CYesReelCheck Availability
71V65903S85BGGIActiveBGG119PBGA119IYesTrayCheck Availability
71V65903S85BQActiveBQ165CABGA165CNoTrayCheck Availability
71V65903S85BQ8ActiveBQ165CABGA165CNoReelCheck Availability
71V65903S85BQGActiveBQG165CABGA165CYesTrayCheck Availability
71V65903S85BQG8ActiveBQG165CABGA165CYesReelCheck Availability
71V65903S85PFGActivePKG100TQFP100CYesTrayCheck Availability
71V65903S85PFG8ActivePKG100TQFP100CYesReelCheck Availability
71V65903S85PFGIActivePKG100TQFP100IYesTrayCheck Availability
71V65903S85PFGI8ActivePKG100TQFP100IYesReelCheck Availability


Technical Documentation

Title Type Format File Size Datesort icon
Datasheets & Errata
71V65703/903 Datasheet Datasheet PDF 560 KB Oct 15, 2014
IDT71V656xx and IDT71V658xx Device Errata Errata PDF 16 KB Jul 28, 2000
PCN# : A1606-02 Add Greatek Taiwan as Alternate Assembly Product Change Notice PDF 567 KB Aug 26, 2016
PCN#: A1309-03 Additional Assembly Sources Product Change Notice PDF 398 KB Oct 21, 2013
PCN#: A-0410-02, Change IDT marking logo with new IDT gridless w Product Change Notice PDF 24 KB Nov 14, 2012
show all (25)
PCN# : A0705-02 New Mold Compound for CABGA-256, FPBGA-48, FPBGA-165 Product Change Notice PDF 138 KB Jul 25, 2007
PDN# : SR06-11 PRODUCT DISCONTINUANCE NOTICE FOR 71V65903S75 Product Delete Notice PDF 92 KB Jan 4, 2007
PCN#: A-0611-02 Transfer of Assembly Build for PBGA 119 (Green & Standard) from ATK, Korea to ATP, Philippines Product Change Notice PDF 120 KB Dec 17, 2006
PCN# A-0607-05 Green Mold Compound KMC3580 for BGA Product Change Notice PDF 194 KB Aug 30, 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 # SR-0505-02 FPBGA BQ165 Solder Pad Opening/Ball Diameter Product Change Notice PDF 163 KB Aug 3, 2005
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-0403-03, BGA package family Product Change Notice PDF 38 KB Dec 9, 2004
PCN#: A-0309-05, new m/c-G770 & d/a-2300 material Product Change Notice PDF 211 KB Oct 16, 2003
PCN#: A-0310-01, Green Products Product Change Notice PDF 26 KB Oct 10, 2003
PCN#:A-0305-02, new m/c G770 & 2300 d/a material Product Change Notice PDF 197 KB Jun 4, 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-0303-01, new m/c G700 & 3230 d/a material Product Change Notice PDF 138 KB Mar 11, 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-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 SR0102-04 : ZBT LOGO Product Change Notice PDF 53 KB Mar 12, 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
71v65903_PF IBIS Model Model - IBIS ZIP 13 KB Aug 8, 2000