IC 27C256-20 EPROM 256K-Bit 200ns CMOS UV EPROM

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  • Jameco Part no.: 39722
  • Manufacturer: Major Brands
  • Manufacturer no.: 27C256-20
  • HTS code: 8542320060
  • Web Exclusive
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IC, 256 Kilobit (32 K x 8-Bit) CMOS EPROM 200ns, DIP-28

The Am27C256 is a 256-Kbit, ultraviolet erasable programmable read-only memory. It is organized as 32K words by 8 bits per word, operates from a single +5 V supply, has a static standby mode, and features fast single address location programming. Products are available in windowed ceramic DIP packages.


  • Fast access time
  • Low Power consumption
  • JEDEC-approved pinout
  • Single +5V power supply
  • ±10% power supply tolerance standard
  • 100% Flashrite™ programming
  • Latch-up protected to 100mA from -1V to Vcc +1V
  • High noise immunity
  • CMOS and TTL input/output compatibility and two line control functions

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  • Specification Value
    Memory Density256Kbit
    Maximum Random Access Time200ns
    Output Enable Access Time75ns
    Interface TypeParallel
    Maximum Operating Current50mA
    Input Voltage5V
    Reprogramming TechniqueUV
    Minimum Operating Temperature0°C
    Maximum Operating Temperature70°C
    Screening LevelCommercial
    MountingThrough Hole

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