Page 1
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)
E
V
CC
bS0I3bI2b
16 15
123456
E
a
PIN NAMES LOADING (Note a)
S
0
E
I0, I
1
Z
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)
T emperature Ranges.
14 13 12 11 10 9
S1I
3aI2aI1aI0aZa
Common Select Input
Enable (Active LOW) Input
Multiplexer Inputs
Multiplexer Output (Note b)
LOGIC DIAGRAM
EaI
0aI1aI2aI3aS1S0I0bI1bI2bI3bEb
345
I
1b
I
0b
7
14126
Z
b
NOTE:
The Flatpak version
has the same pinouts
(Connection Diagram) as
the Dual In-Line Package.
8
GND
HIGH
0.5 U.L.
0.5 U.L.
0.5 U.L.
10 U.L.
11 1210 13 15
LOW
0.25 U.L.
0.25 U.L.
0.25 U.L.
5 (2.5) U.L.
SN54/74LS153
DUAL 4-INPUT MULTIPLEXER
LOW POWER SCHOTTKY
J SUFFIX
CERAMIC
16
1
16
1
16
1
ORDERING INFORMATION
SN54LSXXXJ Ceramic
SN74LSXXXN Plastic
SN74LSXXXD SOIC
LOGIC SYMBOL
CASE 620-09
N SUFFIX
PLASTIC
CASE 648-08
D SUFFIX
SOIC
CASE 751B-03
VCC = PIN 16
7
Z
a
GND = PIN 8
= PIN NUMBERS
9
Z
b
FAST AND LS TTL DAT A
5-1
1 6 5 4 3 10 11 12 13 15
EaI0aI1aI2aI3aI0bI1bI2bI3bE
14
S
0
2
S
a
Z
a
7
VCC = PIN 16
GND = PIN 8
b
Z
b
9
Page 2
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 multiplexer circuits have individual active LOW Enables (Ea, Eb)
which can be used to strobe the outputs independently. When
the Enables (E
Zb) are forced LOW.
The LS153 is the logic implementation of a 2-pole, 4-position 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.
, Eb) are HIGH, the corresponding outputs (Za,
a
TRUTH TABLE
SELECT INPUTS INPUTS (a or b) OUTPUT
S
0
X X H X X X X L
L LLLXXX L
L LLHXXX H
H LLXLXX L
H LLXHXX H
L HLXXLX L
L HLXXHX H
H HLXXXL L
H H LXXXH H
H = HIGH Voltage Level
L = LOW Voltage Level
X = Don’t Care
S
E I
1
0I1I2I3
Za = E
⋅ (I0a ⋅ S1 ⋅ S0 + I1a ⋅ S1 ⋅ S0 + I2a ⋅ S1 ⋅ S0 +
a
I3a ⋅ S1 ⋅ S0)
Zb = E
⋅ (I0b ⋅ S1 ⋅ S0 + I1b ⋅ S1 ⋅ S0 + I2b ⋅ S1 ⋅ S0 +
b
I3b ⋅ S1 ⋅ S0)
The LS153 can be used to move data from a group of registers 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 generator. The LS153 can generate two functions of three variables.
This is useful for implementing highly irregular random logic.
Z
GUARANTEED OPERATING RANGES
Symbol Parameter Min Typ Max Unit
V
T
I
OH
I
OL
CC
A
Supply Voltage 54
74
Operating Ambient Temperature Range 54
74
Output Current — High 54, 74 –0.4 mA
Output Current — Low 54
74
4.5
4.75
–55
0
5.0
5.0
25
25
5.5
5.25
125
70
4.0
8.0
FAST AND LS TTL DATA
5-2
V
°C
mA
Page 3
SN54/74LS153
VILI
LOW Volt
V
pg
VOHOutput HIGH Volt
CC
,
OH
,
IN IH
VOLOutput LOW Volt
V
V
V
IIHI
HIGH C
t
DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified)
Limits
Symbol Parameter
V
IH
V
IK
I
IL
I
OS
I
CC
Note 1: Not more than one output should be shorted at a time, nor for more than 1 second.
Input HIGH Voltage 2.0 V
nput
Input Clamp Diode Voltage –0.65 –1.5 V VCC = MIN, IIN = –18 mA
nput
Input LOW Current –0.4 mA VCC = MAX, VIN = 0.4 V
Short Circuit Current (Note 1) –20 –100 mA VCC = MAX
Power Supply Current 10 mA VCC = MAX
age
age
age
urren
54 0.7
74 0.8
54 2.5 3.5 V
74 2.7 3.5 V
54, 74 0.25 0.4 V IOL = 4.0 mA
74 0.35 0.5 V IOL = 8.0 mA
Min Typ Max
0.1 mA VCC = MAX, VIN = 7.0 V
Unit Test Conditions
Guaranteed Input HIGH Voltage for
All Inputs
Guaranteed Input LOW Voltage for
All Inputs
VCC = MIN, IOH = MAX, VIN = V
or VIL per Truth Table
20 µA VCC = MAX, VIN = 2.7 V
IH
VCC = VCC MIN,
=
or
IN
IL
per Truth Table
IH
AC CHARACTERISTICS (T
Symbol Parameter
t
PLH
t
PHL
t
PLH
t
PHL
t
PLH
t
PHL
Propagation Delay
Data to Output
Propagation Delay
Select to Output
Propagation Delay
Enable to Output
V
IN
V
OUT
A
1.3 V
= 25°C)
Limits
Min Typ Max
10
17
19
25
16
21
15
26
29
38
24
32
Unit Test Conditions
ns Figure 2
ns Figure 1
ns Figure 2
AC WAVEFORMS
t
PHL
1.3 V
1.3 V
t
PLH
1.3 V
V
V
OUT
IN
1.3 V
t
PHL
1.3 V
Figure 1 Figure 2
1.3 V
VCC = 5.0 V
CL = 15 pF
t
PLH
1.3 V
FAST AND LS TTL DATA
5-3
Loading...