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DM74LS253N Datasheet

  • DM74LS253N

  • TRI-STATE Data Selectors/Multiplexers

  • 158.39KB

  • NSC

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54LS253 DM54LS253 DM74LS253 TRI-STATE Data Selectors Multiplexers
June 1989
54LS253 DM54LS253 DM74LS253
TRI-STATE Data Selectors Multiplexers
General Description
Each of these Schottky-clamped data selectors multiplex-
ers contains inverters and drivers to supply fully comple-
mentary on-chip binary decoding data selection to the
AND-OR gates Separate output control inputs are provided
for each of the two four-line sections
The TRI-STATE outputs can interface directly with data
lines of bus-organized systems With all but one of the com-
mon outputs disabled (at a high impedance state) the low
impedance of the single enabled output will drive the bus
line to a high or low logic level
Features
Y
Y
Y
Y
Y
Y
Y
Y
Y
TRI-STATE version of LS153 with same pinout
Schottky-diode-clamped transistors
Permit multiplexing from N-lines to one line
Performs parallel-to-serial conversion
Strobe output control
High fanout totem-pole outputs
Typical propagation delay
Data to output 12 ns
Select to output 21 ns
Typical power dissipation 35 mW
Alternate Military Aerospace device (54LS253) is avail-
able Contact a National Semiconductor Sales Office
Distributor for specifications
Connection Diagram
Dual-In-Line Package
Function Table
Select
Inputs
B
X
L
L
L
L
H
H
H
H
A
X
L
L
H
H
L
L
H
H
C0
X
L
H
X
X
X
X
X
X
Data Inputs
C1
X
X
X
L
H
X
X
X
X
C2
X
X
X
X
X
L
H
X
X
C3
X
X
X
X
X
X
X
L
H
Output
Control
G
H
L
L
L
L
L
L
L
L
Output
Y
Z
L
H
L
H
L
H
L
H
Address Inputs A and B are common to both sections
H
e
High Level L
e
Low Level X
e
Don鈥檛 Care Z
e
High Impedance (off)
TL F 6416 鈥?1
Order Number 54LS253DMQB 54LS253FMQB
54LS253LMQB DM54LS253J DM54LS253W
DM74LS253M or DM74LS253N
See NS Package Number E20A J16A
M16A N16E or W16A
TRI-STATE is a registered trademark of National Semiconductor Corporation
C
1995 National Semiconductor Corporation
TL F 6416
RRD-B30M105 Printed in U S A

DM74LS253N 產(chǎn)品屬性

  • Fairchild Semiconductor

  • Multiplexer

  • LS

  • 8 / 2

  • 35 ns at 5 V

  • 5.25 V

  • 4.75 V

  • + 70 C

  • Through Hole

  • PDIP-16

  • Rail

  • 0 C

  • 8

  • 2

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