DM74S473V中文資料美國國家半導體數(shù)據(jù)手冊PDF規(guī)格書

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

Y Advanced titanium-tungsten (Ti-W) fuses

Y Schottky-clamped for high speed

Address accessD45 ns max

Enable accessD30 ns max

Enable recoveryD30 ns max

Y PNP inputs for reduced input loading

Y All DC and AC parameters guaranteed over

temperature

Y Low voltage TRI-SAFETM programming

Y Open-collector outputs