The 72821 is a 1K x 9 dual synchronous (clocked) FIFO. The device is functionally equivalent to two 72221 FIFOs in a single package with all associated control, data, and flag lines assigned to separate pins. Each of the two FIFOs has a 9-bit input data port and a 9-bit output data port. 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. The 72821 architecture lends itself to many flexible configurations such as: 2-level priority data buffering, Bidirectional operation, Width expansion and Depth expansion.

Features

  • Optimal combination of large capacity, design flexibility and small footprint
  • Ideal for prioritization, bidirectional, and width expansion applications
  • 10 ns read/write cycle time
  • Separate control lines and data lines for each FIFO
  • Separate Empty, Full, Programmable Almost-Empty and Almost- Full flags for each FIFO
  • Enable puts output data lines in high-impedance state
  • Available in 64-pin TQFP and STQFP packages
  • Industrial temperature range (–40C to +85C)

Product Options

Orderable Part ID Part Status Pkg. Code Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type Buy Sample
72821L10PF Obsolete PN64 TQFP 64 C No Tray
Availability
72821L10PF8 Obsolete PN64 TQFP 64 C No Reel
Availability
72821L10PFG Obsolete PNG64 TQFP 64 C Yes Tray
Availability
72821L10PFG8 Obsolete PNG64 TQFP 64 C Yes Reel
Availability
72821L10TF Obsolete PP64 TQFP 64 C No Tray
Availability
72821L10TF8 Obsolete PP64 TQFP 64 C No Reel
Availability
72821L15PF Obsolete PN64 TQFP 64 C No Tray
Availability
72821L15PF8 Obsolete PN64 TQFP 64 C No Reel
Availability
72821L15PFI Obsolete PN64 TQFP 64 I No Tray
Availability
72821L15PFI8 Obsolete PN64 TQFP 64 I No Reel
Availability
72821L15TF Obsolete PP64 TQFP 64 C No Tray
Availability
72821L15TF8 Obsolete PP64 TQFP 64 C No Reel
Availability
72821L15TFI Obsolete PP64 TQFP 64 I No Tray
Availability
72821L15TFI8 Obsolete PP64 TQFP 64 I No Reel
Availability
72821L25PF Obsolete PN64 TQFP 64 C No Tray
Availability
72821L25PF8 Obsolete PN64 TQFP 64 C No Reel
Availability
72821L25PFI Obsolete PN64 TQFP 64 I No Tray
Availability
72821L25PFI8 Obsolete PN64 TQFP 64 I No Reel
Availability
72821L25TF Obsolete PP64 TQFP 64 C No Tray
Availability
72821L25TF8 Obsolete PP64 TQFP 64 C No Reel
Availability
72821L25TFI Obsolete PP64 TQFP 64 I No Tray
Availability
72821L25TFI8 Obsolete PP64 TQFP 64 I No Reel
Availability

Technical Documentation

Title Other Languages Type Format File Size Date
Datasheets & Errata
72801-72851 Datasheet Datasheet PDF 215 KB
User Guides & Manuals
Cypress Discontinued Dual-port and FIFO to IDT Cross Reference Guide Guide PDF 38 KB
PCNs & PDNs
PDN# : SP-17-02 PRODUCT DISCONTINUANCE NOTICE FOR SPO DEVICES Product Discontinuation Notice PDF 645 KB
PDN# : CQ-17-02R1 Quarterly Market Declined PDN (revision1) Product Discontinuation Notice PDF 647 KB
PDN# : CQ-17-02 Quarterly Market Declined PDN Product Discontinuation Notice PDF 898 KB
PDN# CQ-14-05 MARKET DECLINED PRODUCT DISCONTINUANCE NOTICE Product Discontinuation Notice PDF 192 KB
PCN#: A-0410-02, Change IDT marking logo with new IDT gridless w Product Change Notice PDF 24 KB
PCN# : A-0610-02 ASAT China as Alternate Facility for CABGA/CVBGA/FPBGA/TQFP/PQFP Product Change Notice PDF 252 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-0206-08, Orientation of square PQFP & TQFP Product Change Notice PDF 150 KB
PCN# F0202-04R1: Wafer Fabrication Site Change Product Change Notice PDF 50 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
PCN# G9911-05, To qualify low alpha mold compound. Product Change Notice PDF 44 KB

Software & Tools

Title Other Languages Type Format File Size Date
72821 IBIS Model - IBIS ZIP 10 KB
72821 HSPICE Model - HSPICE TAR 32 KB