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70V3579 - Block Diagram


32K x 36 Sync, 3.3V Dual-Port RAM, Pipelined, Interleaved I/O's

The 70V3579 is a high-speed 32K 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 70V3579 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 3.3V.


  • Dual-Port allows simultaneous access of the same memory location
  • Pipelined output mode
  • Counter enable and repeat features
  • Dual chip enables allow for depth expansion without additional logic
  • Full synchronous operation on both ports
  • Separate byte controls for multiplexed bus and bus matching compatibility
  • LVTTL- compatible, single 3.3V (±150mV) 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 fpBGA and 208-pin PQFP packages
  • 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
3.3361152DR208, BC256, BF208, BFG208, BCG256Sync2.5 V LVTTL, 3.3 V LVTTL100.00, 133.00-40 to 85°C, 0 to 70°CDual-Port32K x 36Dual Clocks, CountersPipelined

Product Options

Orderable Part IDPart StatusPkg. CodePkg. TypeLead Count (#)Temp. GradePb (Lead) FreeCarrier TypeSample & Buy
70V3579S4BCActiveBC256CABGA256CNoTrayCheck Availability
70V3579S4BC8ActiveBC256CABGA256CNoReelCheck Availability
70V3579S4BCGActiveBCG256CABGA256CYesTrayCheck Availability
70V3579S4BFActiveBF208CABGA208CNoTrayCheck Availability
70V3579S4BF8ActiveBF208CABGA208CNoReelCheck Availability
70V3579S4BFGActiveBFG208CABGA208CYesTrayCheck Availability
70V3579S4DRActiveDR208PQFP208CNoTrayCheck Availability
70V3579S5BCActiveBC256CABGA256CNoTrayCheck Availability
70V3579S5BC8ActiveBC256CABGA256CNoReelCheck Availability
70V3579S5BCGIActiveBCG256CABGA256IYesTrayCheck Availability
70V3579S5BCIActiveBC256CABGA256INoTrayCheck Availability
70V3579S5BCI8ActiveBC256CABGA256INoReelCheck Availability
70V3579S5BFActiveBF208CABGA208CNoTrayCheck Availability
70V3579S5BF8ActiveBF208CABGA208CNoReelCheck Availability
70V3579S5BFIActiveBF208CABGA208INoTrayCheck Availability
70V3579S5BFI8ActiveBF208CABGA208INoReelCheck Availability
70V3579S5DRActiveDR208PQFP208CNoTrayCheck Availability
70V3579S5DRIActiveDR208PQFP208INoTrayCheck Availability
70V3579S6BCActiveBC256CABGA256CNoTrayCheck Availability
70V3579S6BC8ActiveBC256CABGA256CNoReelCheck Availability
70V3579S6BCIActiveBC256CABGA256INoTrayCheck Availability
70V3579S6BCI8ActiveBC256CABGA256INoReelCheck Availability
70V3579S6BFActiveBF208CABGA208CNoTrayCheck Availability
70V3579S6BF8ActiveBF208CABGA208CNoReelCheck Availability
70V3579S6DRActiveDR208PQFP208CNoTrayCheck Availability


Technical Documentation

Title Type Format File Size Datesort icon
Datasheets & Errata
70V3579 Datasheet Datasheet PDF 179 KB Oct 16, 2014
Apps Notes & White Papers
AN-68, Dual-Port SRAM Simplifies PC-to-TMS320 Interface Application Note PDF 92 KB May 31, 2006
AN-254, The Most Commonly Asked Questions About Sync Dual-Ports Application Note PDF 66 KB May 30, 2006
AN-255 Dual-Port Power Discussion Application Note PDF 36 KB May 30, 2006
show all (6)
AN-253, Introduction to Multi-Port Memories Application Note PDF 36 KB May 30, 2006
AN-09, Dual-Port SRAMs Yield Bit-Slice Designs Application Note PDF 69 KB May 30, 2006
AN-144, Sync Dual-Ports for DSP & Communication Applications Application Note PDF 102 KB May 30, 2006
PCN#: A1309-03 Additional Assembly Sources Product Change Notice PDF 398 KB Oct 21, 2013
PCN#: A-0410-02, Change IDT marking logo with new IDT gridless w Product Change Notice PDF 24 KB Nov 14, 2012
PCN# A-0607-05 Green Mold Compound KMC3580 for BGA Product Change Notice PDF 194 KB Aug 30, 2006
show all (15)
PCN#: TB-0512-01 Reel Color Changed from Blue to Black Product Change Notice PDF 729 KB Dec 16, 2005
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
PCN#: A-0412-04 - To comply with Pb-free labels - Green Products Product Change Notice PDF 80 KB Dec 14, 2004
PCN#: A-0403-03, BGA package family Product Change Notice PDF 38 KB Dec 9, 2004
PCN#: A-0310-01, Green Products Product Change Notice PDF 26 KB Oct 10, 2003
PCN#:A-0305-02, new m/c G770 & 2300 d/a material Product Change Notice PDF 197 KB Jun 4, 2003
PCN# G-0206-09, Ship in Trays instead Tape & Reel Product Change Notice PDF 13 KB Jun 17, 2002
PCN# G-0206-08, Orientation of square PQFP & TQFP Product Change Notice PDF 150 KB Jun 17, 2002
PCN# G-0203-05 Mold Compound Product Change Notice PDF 40 KB Apr 16, 2002
PCN# G0106-01, Moisture Sensitive Label Change Product Change Notice PDF 274 KB Jun 11, 2001
PCN# G9911-05, To qualify low alpha mold compound. Product Change Notice PDF 44 KB Nov 18, 1999

Software & Tools

Title Type Format File Size Datesort icon
70V3579 Verilog Model Model - Verilog TXT 16 KB May 20, 2004
70V3579DR PQFP HSpice Model Model - HSPICE application/x-tar 49 KB Feb 16, 1999
70V3579BF fpBGA IBIS Model Model - IBIS ZIP 8 KB Sep 29, 1999
70V3579DR PQFP IBIS Model Model - IBIS ZIP 9 KB Mar 18, 1999
70V3579 VHDL Model Model - VHDL TXT 33 KB May 19, 2004