Skip to main content
72230 - Block Diagram


2K x 8 SyncFIFO, 5.0V

The 72230 is a 2K x 8 SyncFIFO™ with clocked read and write controls. This FIFO is useful for a wide variety of data buffering needs, such as graphics, Local Area Networks (LANs), and interprocessor communication. It has 8-bit input and output ports. The Read Clock can be tied to the Write Clock for single clock operation or the two clocks can run asynchronous of one another for dual clock operation.


  • 10 ns read/write cycle time
  • Read and Write Clocks can be asynchronous or coincidental
  • Dual-Ported zero fall-through time architecture
  • Empty and Full flags signal FIFO status
  • Almost-Empty and Almost-Full flags set to Empty+7 and Full-7, respectively
  • Output enable puts output data bus in high-impedance state
  • Available in 28-pin 300 mil plastic DIP
  • 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)
5816PT28, PTG28Synchronous5.0 V TTL40.00, 66.00, 100.002K x 80 to 70°CUni-directional

Product Options

Orderable Part IDPart StatusPkg. CodePkg. TypeLead Count (#)Temp. GradePb (Lead) FreeCarrier TypeSample & Buy
72230L10TPObsoletePT28PDIP28CNoTubeCheck Availability
72230L10TPGActivePTG28PDIP28CYesTubeCheck Availability
72230L15TPObsoletePT28PDIP28CNoTubeCheck Availability
72230L25TPObsoletePT28PDIP28CNoTubeCheck Availability


Technical Documentation

Title Type Format File Size Datesort icon
Datasheets & Errata
72420-72240 Datasheet Datasheet PDF 253 KB Jul 25, 2013
Apps Notes & White Papers
AN-83: Width Expansion of SyncFIFOs Application Note PDF 73 KB Jul 31, 2006
PDN# : FS-15-02R1 PRODUCT DISCONTINUANCE NOTCE Product Discontinuation Notice PDF 546 KB Jul 23, 2015
PDN# : FS-15-02 Product Discontinuance Notice Product Discontinuation Notice PDF 548 KB May 21, 2015
PCN#: A-0410-02, Change IDT marking logo with new IDT gridless w Product Change Notice PDF 24 KB Nov 14, 2012
show all (10)
PCN# : A-0605-05 AIT as Alternate Assembly Facility for SOIC/QSOP/SSOP/TSSOP/PDIP Product Change Notice PDF 298 KB May 25, 2006
PCN#: TB-0504-01, Transfer Test & Backend from IDT-Manila to IDT Product Change Notice PDF 35 KB Apr 29, 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-0310-01, Green Products Product Change Notice PDF 26 KB Oct 10, 2003
PCN# F0206-07R1: Wafer Fabrication Site Change Product Change Notice PDF 65 KB Sep 17, 2002
PDN for selected Military grade FIFO products Product Delete Notice PDF 45 KB Feb 5, 2001

Software & Tools

Title Type Format File Size Datesort icon
72230 HSPICE Model - HSPICE application/x-tar 32 KB Jun 28, 1999
72230 IBIS Model - IBIS ZIP 9 KB Jun 28, 1999