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70T3589 - Block Diagram


64K x 36 Sync, 3.3V/2.5V Dual-Port RAM, Interleaved I/O's

The 70T3589 is a high-speed 64K x 36 bit synchronous Dual-Port RAM that has been optimized for applications having unidirectional or bidirectional data flow in bursts. An automatic power down feature, controlled by CE0 and CE1, permits the on-chip circuitry of each port to enter a very low standby power mode. The 70T3589 can support an operating voltage of either 3.3V or 2.5V on one or both ports, controllable by the OPT pins. The power supply for the core of the device (VDD) is at 2.5V.


  • Dual-Port allows simultaneous access of the same memory location
  • Selectable Pipelined or Flow-Through output mode
  • Counter enable and repeat features
  • Dual chip enables allow for depth expansion without additional logic
  • Full synchronous operation on both ports
  • Interrupt and Collision Detection Flags
  • Separate byte controls for multiplexed bus and bus matching compatibility
  • Dual Cycle Deselect (DCD) for Pipelined Output Mode
  • 2.5V (±100mV) power supply for core
  • LVTTL compatible, selectable 3.3V (±150mV) or 2.5V (±100mV) power supply for I/Os and control signals on each port
  • Available in a 256-pin BGA, 208-pin PQFP and 208-pin fpBGA packages
  • Includes JTAG functionality on BGA package versions only
  • Industrial temperature range (-40C to +85C) is available

Product Specification

Core Voltage (V)Bus Width (bits)Density (Kb)Pkg. CodeInterfaceI/O TypeCycle Time (ns)I/O Frequency (MHz)Temp. RangeArchitectureOrganizationFunctionOutput Type
2.5362304BF208, BC256, DR208Sync2.5 V LVTTL, 3.3 V LVTTL133.00, 166.00, 200.00-40 to 85°C, 0 to 70°CDual-Port64K x 36Dual Clocks, Interrupt, Counters, Collision Detect, Sleep Mode, JTAGFlowthrough, Pipelined

Product Options

Orderable Part IDPart StatusPkg. CodePkg. TypeCarrier TypeSample & Buy
70T3589S133BCActiveBC256CABGATrayCheck Availability
70T3589S133BC8ActiveBC256CABGAReelCheck Availability
70T3589S133BCIActiveBC256CABGATrayCheck Availability
70T3589S133BCI8ActiveBC256CABGAReelCheck Availability
70T3589S133BFNot Recommended
BF208CABGATrayCheck Availability
70T3589S133BF8Not Recommended
BF208CABGAReelCheck Availability
70T3589S133BFIActiveBF208CABGATrayCheck Availability
70T3589S133BFI8ActiveBF208CABGAReelCheck Availability
70T3589S133DRActiveDR208PQFPTrayCheck Availability
70T3589S133DRIActiveDR208PQFPTrayCheck Availability
70T3589S166BCActiveBC256CABGATrayCheck Availability
70T3589S166BC8ActiveBC256CABGAReelCheck Availability
70T3589S166BFActiveBF208CABGATrayCheck Availability
70T3589S166BF8ActiveBF208CABGAReelCheck Availability
70T3589S166DRActiveDR208PQFPTrayCheck Availability
70T3589S200BCActiveBC256CABGATrayCheck Availability
70T3589S200BC8ActiveBC256CABGAReelCheck Availability


Technical Documentation

Title Type Format File Size Datesort icon
Datasheets & Errata
70T3519/99/89 Datasheet Datasheet PDF 401 KB Mar 24, 2014
PCN#: A-0410-02, Change IDT marking logo with new IDT gridless w Product Change Notice PDF 24 KB Nov 14, 2012
PCN# A-0506-01: New m/c G700 & d/a 8361J for PQFP Product Change Notice PDF 16 KB Aug 12, 2005
PCN A-0506-03; Packing Material Change Product Change Notice PDF 290 KB Jul 19, 2005
show all (5)
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