74S573 4kb PROM – Datasheet

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This Schottky memory is organized in the popular 1024 words by 4 bits configuration. Memory enable inputs are provided to control the output states. When the device is enabled, the outputs represent the contents of the selected word. When disabled, the 4 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.

74S573 Pinout

74S573 Pin Configuration

Pin NoPin NameDescription
1 A0 Address Pin
2 A1 Address Pin
3 A2 Address Pin
4 A3 Address Pin
5A4 Address Pin
6Q0Data Output
7Q1 Data Output
8Q2 Data Output
9Q3 Data Output
10GNDGround Pin
11Q4 Data Output
12Q5 Data Output
13Q6 Data Output
14 Q7 Data Output
15G’Output Enable
16 A5 Address Pin
17 A6 Address Pin
18 A7 Address Pin
19 A8 Address Pin
20VCCPower Supply Pin

74S573 Key Features

  • Advanced titanium-tungsten (Ti-w) fuses
  • Schottky-clamped for high speed
    • Address access-down to 35 ns max
    • Enable access-25 ns max
    • Enable recovery-25 ns max
  • PNP inputs for reduced input loading
  • All DC and AC parameters guaranteed over temperature
  • Low voltage TRI-SAFE programming
  • TRI-STATE Outputs

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