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72615 - Block Diagram


512 x 18 x 2 Bi-Directional SyncFIFO, 5.0V

The 72615 is a 512 x 18 x 2 bidirectional First-In/First-Out memory, with synchronous interface for fast read and write cycle times. The SyncBiFIFO™ is a data buffer that can store or retrieve information from two sources simultaneously. Two Dual-Port FIFO memory arrays are contained in the SyncBiFIFO; one data buffer for each direction. The SyncBiFIFO has registers on all inputs and outputs. Data is only transferred into the I/O registers on clock edges, hence the interfaces are synchronous.


  • Two independent FIFO memories for fully bidirectional data transfers
  • Synchronous interface for fast (20ns) read and write cycle times
  • Each data port has an independent clock and read/write control
  • Output enable is provided on each port as a three-state control of the data bus
  • Built-in bypass path for direct data transfer between two ports
  • Two fixed flags, Empty and Full
  • Programmable flag offset can be set to any depth
  • Available in a 64-pin TQFP and PLCC packages
  • Industrial temperature range (–40C to +85C)

Product Specification

Core Voltage (V)Bus Width (bits)Density (Kb)Pkg. CodeInterfaceI/O TypeI/O Frequency (MHz)Cycle Time (ns)OrganizationTemp. RangeArchitectureAccess Time (ns)
51818PN64, PL68Synchronous5.0 V TTL20.00, 28.00, 40.00, 50.00512 x 18 x 20 to 70°CBi-directional

Product Options

Orderable Part IDPart StatusPkg. CodePkg. TypeLead Count (#)Temp. GradePb (Lead) FreeCarrier TypeSample & Buy
72615L20JObsoletePL68PLCC68CNoTubeCheck Availability
72615L20J8ObsoletePL68PLCC68CNoReelCheck Availability
72615L20PFObsoletePN64TQFP64CNoTrayCheck Availability
72615L20PF8ObsoletePN64TQFP64CNoReelCheck Availability
72615L25JObsoletePL68PLCC68CNoTubeCheck Availability
72615L25J8ObsoletePL68PLCC68CNoReelCheck Availability
72615L25PFObsoletePN64TQFP64CNoTrayCheck Availability
72615L25PF8ObsoletePN64TQFP64CNoReelCheck Availability
72615L35JObsoletePL68PLCC68CNoTubeCheck Availability
72615L35J8ObsoletePL68PLCC68CNoReelCheck Availability
72615L35PFObsoletePN64TQFP64CNoTrayCheck Availability
72615L35PF8ObsoletePN64TQFP64CNoReelCheck Availability
72615L50JObsoletePL68PLCC68CNoTubeCheck Availability
72615L50J8ObsoletePL68PLCC68CNoReelCheck Availability
72615L50PFObsoletePN64TQFP64CNoTrayCheck Availability
72615L50PF8ObsoletePN64TQFP64CNoReelCheck Availability


Technical Documentation

Title Type Format File Size Datesort icon
Datasheets & Errata
72605/72615 Datasheet Datasheet PDF 316 KB Feb 25, 2013
PDN# : CQ-14-08 Manufacturing Discontinunce PDN Product Discontinuation Notice PDF 486 KB Dec 1, 2014
PCN# : TB1304-01 Change of Moisture Sensitive Level on Selective Products Product Change Notice PDF 129 KB May 13, 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 (19)
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
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-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#: 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# 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