74S287 1024-Bit TTL PROM – Datasheet

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 No	Pin Name	Description
1	A6	Address Pin
2	A5	Address Pin
3	A4	Address Pin
4	A3	Address Pin
5	A0	Address Pin
6	A1	Address Pin
7	A0	Address Pin
8	GND	Ground Pin
9	Q3	Data Output
10	Q2	Data Output
11	Q1	Data Output
12	Q0	Data Output
13	G1′	Output Enable
14	G2′	Output Enable
15	A7	Address Pin
16	VCC	Power 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: