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DM74S473N 数据表(PDF) 1 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
部件名 DM74S473N
功能描述  (512 x 8) 4096-Bit TTL PROM
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制造商  NSC [National Semiconductor (TI)]
网页  http://www.national.com
标志 NSC - National Semiconductor (TI)

DM74S473N 数据表(HTML) 1 Page - National Semiconductor (TI)

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TLD9715
November 1990
DM74S473
(512 x 8) 4096-Bit TTL PROM
General Description
This Schottky memory is organized in the popular 512
words by 8 bits configuration A memory enable input is pro-
vided to control the output states When the device is en-
abled 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 loca-
tions 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 access45 ns max
Enable access30 ns max
Enable recovery30 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
Block Diagram
TLD9715 1
Pin Names
A0 – A8
Addresses
G
Output Enable
GND
Ground
Q0 – Q7
Outputs
VCC
Power Supply
TRI SAFETM is a trademark of National Semiconductor Corporation
C1995 National Semiconductor Corporation
RRD B30M105Printed in U S A


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