DM74S473 Datasheet - National Semiconductor

DM74S473 (512 x 8) 4096-Bit TTL PROM

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 P.

DM74S473 Features

* Y Y Y Y Y Y Advanced titanium-tungsten (Ti-W) fuses Schottky-clamped for high speed Address access 45 ns max Enable access 30 ns max Enable recovery 30 ns max PNP inputs for reduced input loading All DC and AC parameters guaranteed over temperature Low voltage TRI-SAFETM programming Open-collecto

DM74S473_NationalSemiconductor.pdf