DM74S473AN中文资料美国国家半导体数据手册PDF规格书

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.

特性 Features

Y Advanced titanium-tungsten (Ti-W) fuses

Y Schottky-clamped for high speed

Address accessÐ45 ns max

Enable accessÐ30 ns max

Enable recoveryÐ30 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