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National Semiconductor - Quad 2-Input Multiplexer

Numéro de référence 54F257A
Description Quad 2-Input Multiplexer
Fabricant National Semiconductor 
Logo National Semiconductor 





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54F257A fiche technique
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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