dm74s473 National Semiconductor Corporation, dm74s473 Datasheet

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dm74s473

Manufacturer Part Number
dm74s473
Description
512 X 8 4096-bit Ttl Prom
Manufacturer
National Semiconductor Corporation
Datasheet

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C 1995 National Semiconductor Corporation
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
Block Diagram
TRI-SAFE
TM
is a trademark of National Semiconductor Corporation
TL D 9715
A0 – A8
G
GND
Q0 – Q7
V
CC
Pin Names
Addresses
Output Enable
Ground
Outputs
Power Supply
Features
Y
Y
Y
Y
Y
Y
Advanced titanium-tungsten (Ti-W) fuses
Schottky-clamped for high speed
PNP inputs for reduced input loading
All DC and AC parameters guaranteed over
temperature
Low voltage TRI-SAFE
Open-collector outputs
Address access 45 ns max
Enable access 30 ns max
Enable recovery 30 ns max
TM
programming
RRD-B30M105 Printed in U S A
TL D 9715 – 1
November 1990

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dm74s473 Summary of contents

Page 1

... 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 ...

Page 2

... Ordering Information Commercial Temp Range ( Parameter Order Number DM74S473AN DM74S473N DM74S473AJ DM74S473J DM74S473AV DM74S473V Plastic Leaded Chip Carrier (PLCC 9715 – 2 Top View Order Number DM74S473V or 473AV See NS Package Number V20A Max Access Time (ns 9715 – 3 ...

Page 3

... C 1 MHz Outputs Off Max Input Grounded e CC All Outputs Open CC 3 Min Max Units DM74S473 Units Typ Max 80 250 100 ...

Page 4

... To date nearly 7 4 million Schottky Ti-W PROM device hours have been logged with samples in Epoxy B molded DIP (N-package) PLCC (V-package) and CERIP (J- package) Device performance in all package configurations is excellent with Standard Load and Operating Conditions DM74S473 DM74S473A Min Typ Max Min 40 60 ...

Page 5

... Physical Dimensions inches (millimeters) Order Number DM74S473J or 473AJ Order Number DM74S473N or 473AN Ceramic Dual-In-Line Package (J) NS Package Number J20A Molded Dual-In-Line Package (N) NS Package Number N20A 5 ...

Page 6

... Physical Dimensions inches (millimeters) (Continued) Order Number DM74S473V or 473AV LIFE SUPPORT POLICY NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF NATIONAL SEMICONDUCTOR CORPORATION As used herein 1 Life support devices or systems are devices or ...

Page 7

... This datasheet has been download from: www.datasheetcatalog.com Datasheets for electronics components. ...

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