74S287 1024-Bit TTL PROM – Datasheet

2,760 views

This Schottky memory is organized in the popular 32 words by 8 bits configuration. A memory enables input is provided to control the output states. When the device is enabled, the outputs represent the contents of the selected word. When disabled, the 8 outputs go to the “OFF” or high impedance state PROMs are shipped from the factory with lows in all locations. A high may be programmed into any selected location by following the programming instructions.

74S287 Pinout

74S287 Pin Configuration

Pin NoPin NameDescription
1A6 Address Pin
2A5 Address Pin
3A4 Address Pin
4A3 Address Pin
5A0 Address Pin
6A1 Address Pin
7A0 Address Pin
8GNDGround Pin
9Q3 Data Output
10 Q2 Data Output
11 Q1 Data Output
12 Q0 Data Output
13G1′ Output Enable
14G2′ Output Enable
15A7 Address Pin
16VCCPower Supply Pin

74S287 Key Features

  • Advanced titanium-tungsten (T-W) fuses
  • Schottky-clamped for high speed
    • Address access down to-25 ns max
    • Enable access-20 ns max
    • Enable recovery-20 ns max
  • PNP inputs for reduced input loading
  • All DC and AC parameters guaranted over temperature
  • Low voltage TRI-SAFE programming
  • TRI-STATE” Outputs

You can download this datasheet for 74S287 1024-Bit TTL PROM – Datasheet from the link given below: