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What is 74F257ASC?

This electronic component, produced by the manufacturer "National", performs the same function as "Quad 2-Input Multiplexer with TRI-STATE Outputs".


74F257ASC Datasheet PDF - National

Part Number 74F257ASC
Description Quad 2-Input Multiplexer with TRI-STATE Outputs
Manufacturers National 
Logo National Logo 


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November 1994
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
Features
Y Multiplexer expansion by tying outputs together
Y Non-inverting TRI-STATE outputs
Y Input clamp diodes limit high-speed termination effects
Y Guaranteed 4000V minimum ESD protection
Commercial
74F257APC
74F257ASC (Note 1)
74F257ASJ (Note 1)
Military
54F257ADM (Note 2)
54F257AFM (Note 2)
54F257ALL (Note 2)
Package
Number
N16E
J16A
M16A
M16D
W16A
E20A
Package Description
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
Note 1 Devices also available in 13 reel Use suffix e SCX and SJX
Note 2 Military grade device with environmental and burn-in processing Use suffix e DMQB FMQB and LMQB
Logic Symbols
Connection Diagrams
Pin Assignment
for DIP SOIC and Flatpak
Pin Assignment
for LCC
IEEE IEC
TL F 9507–3
TL F 9507 – 1
TL F 9507 – 2
TL F 9507–5
TRI-STATE is a registered trademark of National Semiconductor Corporation
C1995 National Semiconductor Corporation TL F 9507
RRD-B30M75 Printed in U S A

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74F257ASC equivalent
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
74F 257A S C X
Temperature Range Family
74F e Commercial
54F e Military
Device Type
Package Code
P e Plastic DIP
D e Ceramic DIP
F e Flatpak
L e Leadless Ceramic Chip Carrier (LCC)
S e Small Outline SOIC JEDEC
SJ e Small Outline SOIC EIAJ
Special Variations
X e Devices shipped in 13 reels
QB e Military grade with
environmental and burn-in
processing shipped in tubes
Temperature Range
C e Commercial (0 C to a70 C)
M e Military (b55 C to a125 C)
Physical Dimensions inches (millimeters)
20-Lead Ceramic Leadless Chip Carrier (L)
NS Package Number E20A
5


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Part Details

On this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for 74F257ASC electronic component.


Information Total 8 Pages
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Featured Datasheets

Part NumberDescriptionMFRS
74F257ASCThe function is Quad 2-Input Multiplexer with 3-STATE Outputs. FairchildFairchild
74F257ASCThe function is Quad 2-Input Multiplexer with TRI-STATE Outputs. NationalNational
74F257ASJThe function is Quad 2-Input Multiplexer with 3-STATE Outputs. FairchildFairchild

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