The 723636 is a 512 x 36 x 2 Triple Bus sync FIFO memory which supports clock frequencies up to 83 MHz and has read access times as fast as 8 ns. FIFO data can be read out and written using either 18-bit or 9-bit formats with a choice of Big- or Little-Endian configurations. The clocks for each port are independent of one another and can be asynchronous or coincident. These devices can operate in the IDT Standard mode or First Word Fall Through mode.


  • Two independent FIFOs buffer data between one bidirectional 36-bit port and two unidirectional 18-bit ports
  • 18-bit (word) and 9-bit (byte) bus sizing of 18 bits (word)
  • Programmable Almost-Empty and Almost-Full flags
  • Serial or parallel programming of partial flags
  • Master Reset clears data and configures FIFO, Partial Reset clears data but retains configuration settings
  • Mailbox bypass registers for each FIFO
  • Auto power down minimizes power dissipation
  • Available in 128-pin TQFP package
  • 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
723636L12PF Obsolete PK128 TQFP 128 C No Tray
723636L12PF8 Obsolete PK128 TQFP 128 C No Reel
723636L15PF Obsolete PK128 TQFP 128 C No Tray
723636L15PF8 Obsolete PK128 TQFP 128 C No Reel

Documentation & Downloads

Title Other Languages Type Format File Size Date
Datasheets & Errata
723626-723646 Data Sheet Datasheet PDF 297 KB
User Guides & Manuals
Cypress Discontinued Dual-port and FIFO to IDT Cross Reference Guide Guide PDF 123 KB
PDN# : FS-13-01 PRODUCT DISCONTINUANCE NOTICE Product Discontinuation Notice PDF 86 KB
PCN#: A-0410-02, Change IDT marking logo with new IDT gridless w Product Change Notice PDF 24 KB
A-0603-04 Transfer TQFP and PQFP from ASAT HK to ASAT China Product Change Notice PDF 164 KB
PCN A-0506-03; Packing Material Change Product Change Notice PDF 290 KB
PCN#: A-0412-04 - To comply with Pb-free labels - Green Products Product Change Notice PDF 80 KB
PCN#: A-0310-01, Green Products Product Change Notice PDF 26 KB
PCN#G-0302-05, New mold compound EME-G700 series Product Change Notice PDF 65 KB
PCN#: G-0302-06, New die attach 3230 from Ablestik Product Change Notice PDF 150 KB
PCN# G-0110-06 REV.1 Mold Compound Product Change Notice PDF 48 KB
PCN# G-0110-06 Mold Compound Product Change Notice PDF 47 KB
PCN# G0106-01, Moisture Sensitive Label Change Product Change Notice PDF 274 KB
F-01-01 Obsolescence of Selected Speed Grades Product Delete Notice PDF 31 KB
PCN# G9911-05, To qualify low alpha mold compound. Product Change Notice PDF 44 KB
723636 IBIS Model - IBIS ZIP 11 KB
723636 HSPICE Model - HSPICE TAR 40 KB

Boards & Kits