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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: