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MM74C89 Datasheet 64-bit 3-state Random ACcess Read/write Memory

Manufacturer: Fairchild (now onsemi)

Overview: MM74C89 64-Bit 3-STATE Random Access Read/Write Memory October 1987 Revised January 1999 MM74C89 64-Bit 3-STATE Random Access Read/Write.

General Description

The MM74C89 is a 16-word by 4-bit random access read/ write memory.

Inputs to the memory consist of four address lines, four data input lines, a write enable line and a memory enable line.

The four binary address inputs are decoded internally to select each of the 16 possible word locations.

Key Features

  • s Wide supply voltage range: s Guaranteed noise margin: s High noise immunity: 3.0V to 15V 1.0V 0.45 VCC (typ. ) s Low power TTL compatibility: fan out of 2 driving 74L s Low power consumption: s 3-STATE output Note: The timing is different than the DM7489 in that a positive to negative transition of the memory enable must occur for the memory to be selected. 100 nW/package (typ. ) s Fast access time: 130 ns (typ. ) at VCC = 10V Ordering Code: Order Number MM74C89N Package Number Package Descrip.

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Similar Datasheet

Brand Logo Part Number Description Manufacturer
National Logo MM74C89 64-Bit TRI-STATE Random Access Read/Write Memory National

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