The 72V51446 multi-queue flow-control device is a single chip within which between 1 and 16 discrete FIFO queues can be setup. All queues within the device have common data input bus, (write port) and a common data output bus, (read port). Data written into the write port is directed to a respective queue via an internal de-multiplex operation, addressed by the user. Data read from the read port is accessed from a respective queue via an internal multiplex operation, addressed by the user.


  • Total Available Memory = 1,179,648 bits
  • Available Memory in blocks of 256 x 36
  • Independent Read and Write access per queue
  • 100% Bus Utilization, Read and Write on every clock cycle
  • 166 MHz High speed operation (6ns cycle time)
  • 3.7ns access time
  • Global Bus Matching - (All Queues have same Input Bus Width and Output Bus Width)
  • User Selectable Bus Matching Options: – x36in to x36out – x18in to x36out – x9in to x36out – x36in to x18out – x36in to x9out
  • FWFT mode of operation on read port
  • JTAG Functionality (Boundary Scan)
  • Available in a 256-pin PBGA 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
72V51446L6BB Active BB256 PBGA 256 C No Tray
72V51446L6BB8 Active BB256 PBGA 256 C No Reel
72V51446L7-5BB Active BB256 PBGA 256 C No Tray
72V51446L7-5BB8 Active BB256 PBGA 256 C No Reel
72V51446L7-5BBI Preview BB256 PBGA 256 I No Tray

Documentation & Downloads

Title Other Languages Type Format File Size Date
Datasheets & Errata
72V51436-72V51456 Data Sheet Datasheet PDF 563 KB
User Guides & Manuals
Cypress Discontinued Dual-port and FIFO to IDT Cross Reference Guide Guide PDF 123 KB
Application Notes & White Papers
AN-404: High-Speed Packet Processing Utilizing FCM Application Note PDF 142 KB
AN-338: Read Port Operation Application Note PDF 112 KB
AN-349: Interfacing to the Virtex II FPGA. . . Application Note PDF 217 KB
AN-303: Multi-Queue - Serial Programming Application Note PDF 167 KB
AN-349V:Verilog code ex. for Xilinx ApNote XAPP629 Application Note TXT 11 KB
PCN#: A-0410-02, Change IDT marking logo with new IDT gridless w Product Change Notice PDF 24 KB
PCN#: A-0412-04 - To comply with Pb-free labels - Green Products Product Change Notice PDF 80 KB
PCN#: A-0403-03, BGA package family Product Change Notice PDF 38 KB
PCN#: A-0309-05, new m/c-G770 & d/a-2300 material Product Change Notice PDF 211 KB
PCN#: A-0310-01, Green Products Product Change Notice PDF 26 KB
72V51236-72V51556 HSPICE Model - HSPICE ZIP 421 KB
72V51446 IBIS Model - IBIS ZIP 8 KB
72V51446 BSDL Model - BSDL ZIP 3 KB

Boards & Kits