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DM74S473AJ View Datasheet(PDF) - National ->Texas Instruments

Part NameDM74S473AJ National-Semiconductor
National ->Texas Instruments National-Semiconductor
Description(512 x 8) 4096-Bit TTL PROM
DM74S473AJ Datasheet PDF : 6 Pages
1 2 3 4 5 6
Physical Dimensions inches (millimeters) (Continued)
Plastic Leaded Chip Carrier (V)
Order Number DM74S473V or 473AV
See NS Package Number V20A
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General Description
This Schottky memory is organized in the popular 512 words by 8 bits configuration. A memory enable 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.

Features
Advanced titanium-tungsten (Ti-W) fuses
Schottky-clamped for high speed
   Address accessÐ45 ns max
   Enable accessÐ30 ns max
   Enable recoveryÐ30 ns max
PNP inputs for reduced input loading
All DC and AC parameters guaranteed over temperature
Low voltage TRI-SAFE™ programming
Open-collector outputs

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