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Motorola Electronic Components Datasheet

74LS258B Datasheet

QUAD 2-INPUT MULTIPLEXER

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QUAD 2-INPUT MULTIPLEXER
WITH 3-STATE OUTPUTS
The LSTTL / MSI SN54 / 74LS257B and the SN54 / 74LS258B are Quad
2-Input Multiplexers with 3-state outputs. Four bits of data from two sources
can be selected using a Common Data Select input. The four outputs present
the selected data in true (non-inverted) form. The outputs may be switched to
a high impedance state with a HIGH on the common Output Enable (EO) In-
put, allowing the outputs to interface directly with bus oriented systems. It is
fabricated with the Schottky barrier diode process for high speed and is com-
pletely compatible with all Motorola TTL families.
Schottky Process For High Speed
Multiplexer Expansion By Tying Outputs Together
Non-Inverting 3-State Outputs
Input Clamp Diodes Limit High Speed Termination Effects
Special Circuitry Ensures Glitch Free Multiplexing
ESD > 3500 Volts
CONNECTION DIAGRAM DIP (TOP VIEW)
VCC E0 I0c I1c Zc I0d I1d Zd
16 15 14 13 12 11 10 9
SN54/74LS257B
VCC = PIN 16
GND = PIN 8
1 2 3 4 56 78
S I0a I1a Za I0b I1b Zb GND
VCC E0 I0c I1c Zc I0d I1d Zd
16 15 14 13 12 11 10 9
SN54/74LS258B
1 2 3 4 56 78
S I0a I1a Za I0b I1b Zb GND
NOTE:
The Flatpak version
has the same pinouts
(Connection Diagram) as
the Dual In-Line Package.
SN54/74LS257B
SN54/74LS258B
QUAD 2-INPUT MULTIPLEXER
WITH 3-STATE OUTPUTS
LOW POWER SCHOTTKY
16
1
16
1
16
1
J SUFFIX
CERAMIC
CASE 620-09
N SUFFIX
PLASTIC
CASE 648-08
D SUFFIX
SOIC
CASE 751B-03
ORDERING INFORMATION
SN54LSXXXJ
SN74LSXXXN
SN74LSXXXD
Ceramic
Plastic
SOIC
FAST AND LS TTL DATA
5-1


Motorola Electronic Components Datasheet

74LS258B Datasheet

QUAD 2-INPUT MULTIPLEXER

No Preview Available !

SN54/74LS257B D SN54/74LS258B
LOGIC DIAGRAMS
SN54 / 74LS257B
E0
15
I0a
2
I1a
3
I0b I1b
56
I0c
14
I1c
13
I0d
11
I1d
10
S
1
4
Za
E0
15
I0a
2
I1a
3
7 12
Zb Zc
SN54 / 74LS258B
I0b
5
I1b
6
I0c
14
I1c
13
9
Zd
I0d
11
I1d
10
S
1
VCC = PIN 16
GND = PIN 8
= PIN NUMBERS
4 7 12
Za Zb Zc
FAST AND LS TTL DATA
5-2
9
Zd


Part Number 74LS258B
Description QUAD 2-INPUT MULTIPLEXER
Maker Motorola
Total Page 4 Pages
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