74F257ASCSCX NSC [National Semiconductor], 74F257ASCSCX Datasheet

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74F257ASCSCX

Manufacturer Part Number
74F257ASCSCX
Description
Quad 2-Input Multiplexer with TRI-STATE Outputs
Manufacturer
NSC [National Semiconductor]
Datasheet
C 1995 National Semiconductor Corporation
54F 74F257A
Quad 2-Input Multiplexer with TRI-STATE Outputs
General Description
The ’F257A is a quad 2-input multiplexer with TRI-STATE
outputs Four bits of data from two sources can be selected
using a Common Data Select input The four outputs pres-
ent the selected data in true (non-inverted) form The out-
puts may be switched to a high impedance state with a
HIGH on the common Output Enable (OE) input allowing
the outputs to interface directly with bus-oriented systems
Logic Symbols
TRI-STATE is a registered trademark of National Semiconductor Corporation
Note 1 Devices also available in 13 reel Use suffix
Note 2 Military grade device with environmental and burn-in processing Use suffix
74F257APC
74F257ASC (Note 1)
74F257ASJ (Note 1)
Commercial
IEEE IEC
54F257ADM (Note 2)
54F257AFM (Note 2)
54F257ALL (Note 2)
TL F 9507–3
TL F 9507–5
TL F 9507
Military
e
SCX and SJX
for DIP SOIC and Flatpak
Pin Assignment
Package
N16E
J16A
M16A
M16D
W16A
E20A
Number
Features
Y
Y
Y
Y
Connection Diagrams
Multiplexer expansion by tying outputs together
Non-inverting TRI-STATE outputs
Input clamp diodes limit high-speed termination effects
Guaranteed 4000V minimum ESD protection
16-Lead (0 300 Wide) Molded Dual-In-Line
16-Lead Ceramic Dual-In-Line
16-Lead (0 150 Wide) Molded Small Outline JEDEC
16-Lead (0 300 Wide) Molded Small Outline EIAJ
16-Lead Cerpack
20-Lead Ceramic Leadless Chip Carrier Type C
e
DMQB FMQB and LMQB
TL F 9507 – 1
Package Description
Pin Assignment
for LCC
RRD-B30M75 Printed in U S A
November 1994
TL F 9507 – 2

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74F257ASCSCX Summary of contents

Page 1

Quad 2-Input Multiplexer with TRI-STATE Outputs General Description The ’F257A is a quad 2-input multiplexer with TRI-STATE outputs Four bits of data from two sources can be selected using a Common Data Select input The four outputs pres- ...

Page 2

Unit Loading Fan Out Pin Names Description S Common Data Select Input OE TRI-STATE Output Enable Input (Active LOW) I –I Data Inputs from Source –I Data Inputs from Source –Z TRI-STATE ...

Page 3

Absolute Maximum Ratings If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office Distributors for availability and specifications Storage Temperature b Ambient Temperature under Bias b Junction Temperature under Bias b Plastic b V Pin Potential ...

Page 4

AC Electrical Characteristics Symbol Parameter Min t Propagation Delay 2 5 PLH PHL Propagation Delay 4 0 PLH PHL n t Output Enable Time 2 ...

Page 5

Ordering Information The device number is used to form part of a simplified purchasing code where the package type and temperature range are defined as follows Temperature Range Family 74F Commercial e 54F Military e Device Type Package Code P ...

Page 6

Physical Dimensions inches (millimeters) (Continued) 16-Lead Ceramic Dual-In-Line Package (D) 16-Lead (0 150 Wide) Molded Small Outline Package JEDEC (S) NS Package Number J16A NS Package Number M16A 6 ...

Page 7

Physical Dimensions inches (millimeters) (Continued) 16-Lead (0 300 Wide) Molded Small Outline Package EIAJ (SJ) 16-Lead (0 300 Wide) Molded Dual-In-Line Package (P) NS Package Number M16D NS Package Number N16E 7 ...

Page 8

Physical Dimensions inches (millimeters) (Continued) 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 ...

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