SN74LS153 MULTIPLEXER Datasheet

SN74LS153 Datasheet, PDF, Equivalent


Part Number

SN74LS153

Description

DUAL 4-INPUT MULTIPLEXER

Manufacture

Motorola

Total Page 5 Pages
Datasheet
Download SN74LS153 Datasheet


SN74LS153
DUAL 4-INPUT MULTIPLEXER
The LSTTL / MSI SN54 / 74LS153 is a very high speed Dual 4-Input
Multiplexer with common select inputs and individual enable inputs for each
section. It can select two bits of data from four sources. The two buffered
outputs present data in the true (non-inverted) form. In addition to multiplexer
operation, the LS153 can generate any two functions of three variables. The
LS153 is fabricated with the Schottky barrier diode process for high speed and
is completely compatible with all Motorola TTL families.
Multifunction Capability
Non-Inverting Outputs
Separate Enable for Each Multiplexer
Input Clamp Diodes Limit High Speed Termination Effects
CONNECTION DIAGRAM DIP (TOP VIEW)
VCC Eb S0 I3b I2b I1b I0b Zb
16 15 14 13 12 11 10 9
NOTE:
The Flatpak version
has the same pinouts
(Connection Diagram) as
the Dual In-Line Package.
1 2 3 4 56
78
Ea S1 I3a I2a I1a I0a Za GND
PIN NAMES
LOADING (Note a)
HIGH
LOW
S0
E
I0, I1
Z
Common Select Input
Enable (Active LOW) Input
Multiplexer Inputs
Multiplexer Output (Note b)
0.5 U.L.
0.5 U.L.
0.5 U.L.
10 U.L.
0.25 U.L.
0.25 U.L.
0.25 U.L.
5 (2.5) U.L.
NOTES:
a) 1 TTL Unit Load (U.L.) = 40 µA HIGH/1.6 mA LOW.
b) The Output LOW drive factor is 2.5 U.L. for Military (54) and 5 U.L. for Commercial (74)
Temperature Ranges.
LOGIC DIAGRAM
Ea I0a I1a
1 65
I2a
4
I3a S1 S0 I0b I1b I2b I3b Eb
32
14 10
11
12 13 15
SN54/74LS153
DUAL 4-INPUT MULTIPLEXER
LOW POWER SCHOTTKY
16
1
J SUFFIX
CERAMIC
CASE 620-09
16
1
N SUFFIX
PLASTIC
CASE 648-08
16
1
D SUFFIX
SOIC
CASE 751B-03
ORDERING INFORMATION
SN54LSXXXJ Ceramic
SN74LSXXXN Plastic
SN74LSXXXD SOIC
LOGIC SYMBOL
1 6 5 4 3 10 11 12 13 15
Ea I0a I1a I2a I3a I0b I1b I2b I3b Eb
14 S0
2 Sa Za Zb
79
VCC = PIN 16
GND = PIN 8
79
= PIN NUMBERS
Za Zb
FAST AND LS TTL DATA
5-257
VCC = PIN 16
GND = PIN 8

SN74LS153
SN54 / 74LS153
FUNCTIONAL DESCRIPTION
The LS153 is a Dual 4-input Multiplexer fabricated with Low
Power, Schottky barrier diode process for high speed. It can
select two bits of data from up to four sources under the control
of the common Select Inputs (S0, S1). The two 4-input multi-
plexer circuits have individual active LOW Enables (Ea, Eb)
which can be used to strobe the outputs independently. When
the Enables (Ea, Eb) are HIGH, the corresponding outputs (Za,
Zb) are forced LOW.
The LS153 is the logic implementation of a 2-pole, 4-posi-
tion switch, where the position of the switch is determined by
the logic levels supplied to the two Select Inputs. The logic
equations for the outputs are shown below.
Za = Ea (I0a S1 S0 + I1a S1 S0 + I2a S1 S0 +
I3a S1 S0)
Zb = Eb (I0b S1 S0 + I1b S1 S0 + I2b S1 S0 +
I3b S1 S0)
The LS153 can be used to move data from a group of regis-
ters to a common output bus. The particular register from
which the data came would be determined by the state of the
Select Inputs. A less obvious application is a function genera-
tor. The LS153 can generate two functions of three variables.
This is useful for implementing highly irregular random logic.
SELECT INPUTS
S0 S1 E
X XH
L LL
L LL
H LL
H LL
L HL
L HL
H HL
H HL
H = HIGH Voltage Level
L = LOW Voltage Level
X = Don’t Care
TRUTH TABLE
INPUTS (a or b)
I0 I1 I2
XXX
LXX
HXX
XLX
XHX
XXL
XXH
XXX
XXX
I3
X
X
X
X
X
X
X
L
H
OUTPUT
Z
L
L
H
L
H
L
H
L
H
GUARANTEED OPERATING RANGES
Symbol
Parameter
VCC
Supply Voltage
TA Operating Ambient Temperature Range
IOH Output Current — High
IOL Output Current — Low
Min Typ Max Unit
54 4.5 5.0 5.5
74 4.75 5.0 5.25
V
54 – 55 25 125 °C
74 0 25 70
54, 74
– 0.4
mA
54 4.0 mA
74 8.0
FAST AND LS TTL DATA
5-258


Features DUAL 4-INPUT MULTIPLEXER The LSTTL / MSI SN54 / 74LS153 is a very high speed Du al 4-Input Multiplexer with common sele ct inputs and individual enable inputs for each section. It can select two bit s of data from four sources. The two bu ffered outputs present data in the true (non-inverted) form. In addition to mu ltiplexer operation, the LS153 can gene rate any two functions of three variabl es. The LS153 is fabricated with the Sc hottky barrier diode process for high s peed and is completely compatible with all Motorola TTL families. • Multifun ction Capability • Non-Inverting Outp uts • Separate Enable for Each Multip lexer • Input Clamp Diodes Limit High Speed Termination Effects CONNECTION DIAGRAM DIP (TOP VIEW) VCC Eb S0 I3b I2 b I1b I0b Zb 16 15 14 13 12 11 10 9 NOT E: The Flatpak version has the same pin outs (Connection Diagram) as the Dual I n-Line Package. 1 2 3 4 56 78 Ea S1 I3a I2a I1a I0a Za GND PIN NAMES LOAD ING (Note a) HIGH LOW S0 E I0, I1 Z Common Select Input Ena.
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