MM74C89 Datasheet (Fairchild) - 64-Bit 3-STATE Random Access Read/Write Memory

MM74C89, 64-Bit 3-STATE Random Access Read/Write Memory

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.

An inte

MM74C89 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 o