4K x 8 Dual-Port RAM w/Semaphore

The 71342 is a high-speed 4K x 8 Dual-Port Static RAM containing a fully independent semaphore logic block to assist in arbitrating between ports. This block contains unassigned flags which can be accessed by either side, however, only one side can control the flag at any time. An automatic power down feature, controlled by CE and SEM, permits the on-chip circuitry of each port to enter a very low standby power mode (both CE and SEM HIGH).

Features

  • True Dual-Ported memory cells which allow simultaneous access of the same memory location
  • Fully asynchronous operation from either port
  • Full on-chip hardware support of semaphore signaling between ports
  • Battery backup operation—2V data retention (LA only)
  • TTL-compatible
  • single 5V (±10%) power supply
  • Available in 52-pin PLCC and 64-pin TQFP packages
  • Industrial temperature range (–40C to +85C) is available

Product Options

Orderable Part ID Part Status Pkg. Code Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type Buy Sample
71342LA20J Active PL52 PLCC 52 C No Tube Availability
71342LA20J8 Active PL52 PLCC 52 C No Reel Availability
71342LA20JG Active PLG52 PLCC 52 C Yes Tube Availability
71342LA20JG8 Active PLG52 PLCC 52 C Yes Reel Availability
71342LA20PF Active PN64 TQFP 64 C No Tray Availability
71342LA20PF8 Active PN64 TQFP 64 C No Reel Availability
71342LA20PFG Active PNG64 TQFP 64 C Yes Tray Availability
71342LA20PFG8 Active PNG64 TQFP 64 C Yes Reel Availability
71342LA25J Active PL52 PLCC 52 C No Tube Availability
71342LA25J8 Active PL52 PLCC 52 C No Reel Availability
71342LA25JGI Active PLG52 PLCC 52 I Yes Tube Availability
71342LA25JGI8 Active PLG52 PLCC 52 I Yes Reel Availability
71342LA25JI Active PL52 PLCC 52 I No Tube Availability
71342LA25JI8 Active PL52 PLCC 52 I No Reel Availability
71342LA25PF Active PN64 TQFP 64 C No Tray Availability
71342LA25PF8 Active PN64 TQFP 64 C No Reel Availability
71342LA25PFI Active PN64 TQFP 64 I No Tray Availability
71342LA25PFI8 Active PN64 TQFP 64 I No Reel Availability
71342LA35J Active PL52 PLCC 52 C No Tube Availability
71342LA35J8 Active PL52 PLCC 52 C No Reel Availability
71342LA35PF Active PN64 TQFP 64 C No Tray Availability
71342LA35PF8 Active PN64 TQFP 64 C No Reel Availability
71342LA45J Active PL52 PLCC 52 C No Tube Availability
71342LA45J8 Active PL52 PLCC 52 C No Reel Availability
71342LA55J Active PL52 PLCC 52 C No Tube Availability
71342LA55J8 Active PL52 PLCC 52 C No Reel Availability
71342LA55PF Active PN64 TQFP 64 C No Tray Availability
71342LA55PF8 Active PN64 TQFP 64 C No Reel Availability
71342LA70J Active PL52 PLCC 52 C No Tube Availability
71342LA70J8 Active PL52 PLCC 52 C No Reel Availability
71342SA20J Active PL52 PLCC 52 C No Tube Availability
71342SA20J8 Active PL52 PLCC 52 C No Reel Availability
71342SA20PF Active PN64 TQFP 64 C No Tray Availability
71342SA20PF8 Active PN64 TQFP 64 C No Reel Availability
71342SA25J Active PL52 PLCC 52 C No Tube Availability
71342SA25J8 Active PL52 PLCC 52 C No Reel Availability
71342SA25PF Active PN64 TQFP 64 C No Tray Availability
71342SA25PF8 Active PN64 TQFP 64 C No Reel Availability
71342SA35J Active PL52 PLCC 52 C No Tube Availability
71342SA35J8 Active PL52 PLCC 52 C No Reel Availability
71342SA35PF Active PN64 TQFP 64 C No Tray Availability
71342SA35PF8 Active PN64 TQFP 64 C No Reel Availability
71342SA45J Active PL52 PLCC 52 C No Tube Availability
71342SA45J8 Active PL52 PLCC 52 C No Reel Availability
71342SA55J Active PL52 PLCC 52 C No Tube Availability
71342SA55J8 Active PL52 PLCC 52 C No Reel Availability
71342SA55PF Active PN64 TQFP 64 C No Tray Availability
71342SA55PF8 Active PN64 TQFP 64 C No Reel Availability
71342SA70J Active PL52 PLCC 52 C No Tube Availability
71342SA70J8 Active PL52 PLCC 52 C No Reel Availability

Technical Documentation

Title Other Languages Type Format File Size Date
Datasheets & Errata
71342 Datasheet - Datasheet PDF 312 KB Dec 16, 2012
Application Notes & White Papers
AN-14, Dual-Port w/ Semaphore Arbitration - Application Note PDF 71 KB May 29, 2006
AN-91, The Most Commonly Asked Questions About Async Dual-Ports - Application Note PDF 87 KB May 30, 2006
AN-68, Dual-Port SRAM Simplifies PC-to-TMS320 Interface - Application Note PDF 92 KB May 30, 2006
AN-09, Dual-Port SRAMs Yield Bit-Slice Designs - Application Note PDF 69 KB May 29, 2006
AN-253, Introduction to Multi-Port Memories - Application Note PDF 36 KB May 29, 2006
PCNs & PDNs
PCN# : A1606-02 Add Greatek Taiwan as Alternate Assembly - Product Change Notice PDF 567 KB Aug 25, 2016
PCN# G-0110-06 Mold Compound - Product Change Notice PDF 47 KB Dec 13, 2001
PCN# G-0203-05 Mold Compound - Product Change Notice PDF 40 KB Apr 15, 2002
PCN# : A-0610-02 ASAT China as Alternate Facility for CABGA/CVBGA/FPBGA/TQFP/PQFP - Product Change Notice PDF 252 KB Oct 18, 2006
PCN# A-0607-06 MMT Thailand as Alternate Assembly Facility for PLCC, SOIC 150mil/300mil - Product Change Notice PDF 223 KB Oct 5, 2006
PCN#: A-0412-04 - To comply with Pb-free labels - Green Products - Product Change Notice PDF 80 KB Dec 13, 2004
A-0603-04 Transfer TQFP and PQFP from ASAT HK to ASAT China - Product Change Notice PDF 164 KB May 9, 2006
PCN#: A-0410-02, Change IDT marking logo with new IDT gridless w - Product Change Notice PDF 24 KB Nov 13, 2012
PCN# G0106-01, Moisture Sensitive Label Change - Product Change Notice PDF 274 KB Jun 10, 2001
PCN#: A-0310-01, Green Products - Product Change Notice PDF 26 KB Oct 9, 2003
PCN#: G-0302-06, New die attach 3230 from Ablestik - Product Change Notice PDF 150 KB Mar 19, 2003
PCN#G-0302-05, New mold compound EME-G700 series - Product Change Notice PDF 65 KB Mar 19, 2003
PCN# G9911-05, To qualify low alpha mold compound. - Product Change Notice PDF 44 KB Nov 17, 1999
PCN A-0506-03; Packing Material Change - Product Change Notice PDF 290 KB Jul 18, 2005
PCN#: TB-0512-01 Reel Color Changed from Blue to Black - Product Change Notice PDF 729 KB Dec 15, 2005
PCN# G-0110-06 REV.1 Mold Compound - Product Change Notice PDF 48 KB Apr 25, 2002
PCN# G-0206-08, Orientation of square PQFP & TQFP - Product Change Notice PDF 150 KB Jun 16, 2002
PCN SM-0202-02 Wafer Fab Transfer, Fab 2 to Fab4 - Product Change Notice PDF 40 KB Feb 24, 2002
PCN#: A-0309-04, new mold compound G600 material - Product Change Notice PDF 134 KB Oct 6, 2003

Software & Tools

Title Other Languages Type Format File Size Date
71342J PLCC HSpice Model - Model - HSPICE TAR 49 KB Oct 11, 1998