SDAS081C − APRIL 1982 − REVISED DECEMBER 1994
SN54ALS157A, SN54ALS158 . . . J PACKAGE
SN74ALS157A, SN74ALS158,
SN74AS157, SN74AS158 . . . D OR N PACKAGE
(TOP VIEW)
Buffered Inputs and Outputs
Package Options Include Plastic
Small-Outline (D) Packages, Ceramic Chip
Carriers (FK), and Standard Plastic (N) and
Ceramic (J) 300-mil DIPs
A /B
1A
1B
1Y
2A
2B
2Y
GND
description
These data selectors/multiplexers contain
inverters and drivers to supply full data selection
to the four output gates. A separate strobe (G)
input is provided. A 4-bit word is selected from one
of two sources and is routed to the four outputs.
The ′ALS157A and SN74AS157 present true
data. The ′ALS158 and SN74AS158 present
inverted data to minimize propagation delay time.
1
16
2
15
3
14
4
13
5
12
6
11
7
10
8
9
VCC
G
4A
4B
4Y
3A
3B
3Y
SN54ALS157A, SN54ALS158 . . . FK PACKAGE
(TOP VIEW)
1A
A/B
NC
VCC
The SN54ALS157A and SN54ALS158 are
characterized for operation over the full military
temperature range of − 55°C to 125°C. The
SN74ALS157A, SN74ALS158, SN74AS157, and
SN74AS158 are characterized for operation from
0°C to 70°C.
4
3
2 1 20 19
18
5
17
6
16
7
15
8
14
9 10 11 12 13
4A
4B
NC
4Y
3A
2Y
GND
NC
3Y
3B
1B
1Y
NC
2A
2B
G
•
•
NC − No internal connection
FUNCTION TABLE
INPUTS
OUTPUT Y
DATA
A
B
′ALS157A
ALS157A
SN74AS157
′ALS158
ALS158
SN74AS158
X
X
L
H
L
L
X
L
H
L
H
X
H
L
L
H
X
L
L
H
L
H
X
H
H
L
G
A /B
H
X
L
L
Copyright 1994, Texas Instruments Incorporated
!"#$ % &'!!($ #% )'*+$ ,#$(!,'&$% &!" $ %)(&$% )(! $.( $(!"% (/#% %$!'"($%
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$(%$2 #++ )#!#"($(!%-
• DALLAS, TEXAS 75265
• HOUSTON, TEXAS 77251−1443
POST OFFICE BOX 655303
POST OFFICE BOX 1443
1
SDAS081C − APRIL 1982 − REVISED DECEMBER 1994
logic symbols†
′ALS157A, SN74AS157
15
G
1
A /B
1A
1B
2A
2B
3A
3B
4A
4B
EN
G
G1
A /B
2
3
′ALS158, SN74AS158
15
1
MUX
4
1
1A
1Y
1B
5
6
7
2A
2Y
2B
11
10
9
3A
3Y
3B
14
13
12
4A
4Y
4B
1
3
•
1
MUX
4
1
1Y
5
6
7
2Y
11
10
9
3Y
14
13
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443
•
G1
2
† These symbols are in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
Pin numbers shown are for the D, J, and N packages.
2
EN
12
4Y
SDAS081C − APRIL 1982 − REVISED DECEMBER 1994
logic diagrams (positive logic)
1A
2
′ALS157A
1A
4
1B
2A
3
5
2A
7
2B
3A
11
3A
9
3B
4A
14
4A
12
4B
G
A /B
6
4B
15
G
A /B
1
10
13
2A
1A
3
15
1
5
2A
3A
6
11
3A
9
3B
4A
14
4A
G
A /B
13
6
4B
15
G
1
A /B
2Y
11
10
3Y
14
12
4Y
1Y
5
9
3Y
3B
12
4B
3
7
2Y
2B
10
2
4
1Y
1B
7
2B
4Y
SN74AS158
2
4
1B
3Y
14
SN74AS157
1A
2Y
11
12
4Y
1Y
5
9
3Y
3B
13
3
7
2Y
2B
10
′ALS158
4
1Y
1B
6
2
13
4Y
15
1
Pin numbers shown are for the D, J, and N packages.
•
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443
•
3
SDAS081C − APRIL 1982 − REVISED DECEMBER 1994
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)†
Supply voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
Input voltage, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
Operating free-air temperature range, TA: SN54ALS157A, SN54ALS158 . . . . . . . . . . . . . . . −55°C to 125°C
SN74ALS157A, SN74ALS158 . . . . . . . . . . . . . . . . . . 0°C to 70°C
Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −65°C to 150°C
† Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
recommended operating conditions
SN54ALS157A
SN54ALS158
VCC
VIH
Supply voltage
VIL
IOH
Low-level input voltage
IOL
TA
High-level input voltage
SN74ALS157A
SN74ALS158
UNIT
MIN
NOM
MAX
MIN
NOM
MAX
4.5
5
5.5
4.5
5
5.5
2
2
V
V
0.7
0.8
V
High-level output current
−0.4
−0.4
mA
Low-level output current
4
8
mA
70
°C
Operating free-air temperature
−55
125
0
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
SN54ALS157A
SN54ALS158
TEST CONDITIONS
MIN
VIK
VOH
VCC = 4.5 V,
VCC = 4.5 V to 5.5 V,
II = − 18 mA
IOH = − 0.4 mA
VOL
VCC = 4.5 V
IOL = 4 mA
IOL = 8 mA
II
IIH
VCC = 5.5 V,
VCC = 5.5 V,
VI = 7 V
VI = 2.7 V
IIL
IO§
VCC = 5.5 V,
VCC = 5.5 V,
VI = 0.4 V
VO = 2.25 V
ICC
′ALS157A
′ALS158
VCC = 5.5 V,
TYP‡
SN74ALS157A
SN74ALS158
MAX
MIN
TYP‡
−1.2
VCC − 2
UNIT
MAX
−1.2
VCC − 2
0.25
0.4
V
0.25
0.4
0.35
0.5
0.1
−20
See Note 1
V
0.1
V
mA
20
20
µA
−0.1
−0.1
mA
−112
mA
−112
−30
6
11
6
11
5
10
5
10
mA
‡ All typical values are at VCC = 5 V, TA = 25°C.
§ The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, IOS.
NOTE 1: ICC is measured with 4.5 V applied to all inputs and all outputs open.
4
•
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443
•
SDAS081C − APRIL 1982 − REVISED DECEMBER 1994
switching characteristics (see Figure 1)
PARAMETER
FROM
(INPUT)
VCC = 5 V,
CL = 50 pF,
RL = 500 Ω,
TA = 25°C
TO
(OUTPUT)
′ALS157A
tPLH
tPHL
A or B
Y
tPLH
tPHL
A/B
Y
tPLH
tPHL
G
Y
VCC = 4.5 V to 5.5 V,
CL = 50 pF,
RL = 500 Ω,
TA = MIN to MAX†
SN54ALS157A
UNIT
SN74ALS157A
TYP
MIN
MAX
MIN
MAX
9
4
17
4
14
6
2
15
2
12
15
7
28
7
24
9
4
20
4
17
14
7
25
7
20
10
4
18
4
13
ns
ns
ns
† For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
switching characteristics (see Figure 1)
PARAMETER
FROM
(INPUT)
VCC = 5 V,
CL = 50 pF,
RL = 500 Ω,
TA = 25°C
TO
(OUTPUT)
tPLH
tPHL
A or B
Y
tPLH
tPHL
A/B
Y
tPLH
tPHL
G
Y
′ALS158
VCC = 4.5 V to 5.5 V,
CL = 50 pF,
RL = 500 Ω,
TA = MIN to MAX†
SN54ALS158
UNIT
SN74ALS158
TYP
MIN
MAX
MIN
MAX
9
4
18
4
15
5
2
12
2
8
13
5
22
5
18
13
5
22
5
18
13
5
22
5
18
13
5
22
5
18
ns
ns
ns
† For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
•
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443
•
5
SDAS081C − APRIL 1982 − REVISED DECEMBER 1994
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)†
Supply voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
Input voltage, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
Operating free-air temperature range, TA: SN74AS157, SN74AS158 . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C
Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −65°C to 150°C
† Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
recommended operating conditions
SN74AS157
SN74AS158
UNIT
MIN
NOM
MAX
4.5
5
5.5
VCC
VIH
Supply voltage
VIL
IOH
Low-level input voltage
0.8
V
High-level output current
−2
mA
IOL
TA
Low-level output current
20
mA
70
°C
High-level input voltage
2
Operating free-air temperature
V
V
0
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
SN74AS157
SN74AS158
MIN
VIK
VOH
VOL
VCC = 4.5 V,
VCC = 4.5 V to 5.5 V,
II = − 18 mA
IOH = − 2 mA
VCC = 4.5 V,
IOL = 20 mA
TYP‡
−1.2
VCC − 2
A, B, or G
0.35
A, B, or G
VCC = 5.5 V,
VI = 7 V
VCC = 5.5 V,
VI = 2.7 V
20
VCC = 5.5 V,
VI = 0.4 V
−0.5
VCC = 5.5 V,
VO = 2.25 V
0.1
40
A/B
IIL
A, B, or G
IO§
ICC
SN74AS157
SN74AS158
0.5
V
0.2
A/B
IIH
V
V
A/B
II
UNIT
MAX
mA
µA
A
−1
VCC = 5.5 V
−30
−112
17.5
28
15.6
22.5
mA
mA
mA
‡ All typical values are at VCC = 5 V, TA = 25°C.
§ The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, IOS.
6
•
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443
•
SDAS081C − APRIL 1982 − REVISED DECEMBER 1994
switching characteristics (see Figure 1)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
VCC = 4.5 V to 5.5 V,
CL = 50 pF,
RL = 500 Ω,
TA = MIN to MAX†
UNIT
SN74AS157
MIN
tPLH
tPHL
A or B
Y
tPLH
tPHL
A/B
Y
tPLH
tPHL
G
Y
MAX
1
6
1
5.5
2
11
2
10
2
10.5
2
7.5
ns
ns
ns
† For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
switching characteristics (see Figure 1)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
VCC = 4.5 V to 5.5 V,
CL = 50 pF,
RL = 500 Ω,
TA = MIN to MAX†
UNIT
SN74AS158
MIN
tPLH
tPHL
A or B
Y
tPLH
tPHL
A/B
Y
tPLH
tPHL
G
Y
MAX
1
5
1
4.5
2
9.5
2
10.5
2
6.5
2
10
ns
ns
ns
† For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
•
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443
•
7
SDAS081C − APRIL 1982 − REVISED DECEMBER 1994
PARAMETER MEASUREMENT INFORMATION
SERIES 54ALS/74ALS AND 54AS/74AS DEVICES
7V
RL = R1 = R2
VCC
S1
RL
R1
Test
Point
From Output
Under Test
CL
(see Note A)
From Output
Under Test
RL
Test
Point
CL
(see Note A)
CL
(see Note A)
LOAD CIRCUIT FOR
BI-STATE
TOTEM-POLE OUTPUTS
LOAD CIRCUIT
FOR OPEN-COLLECTOR OUTPUTS
3.5 V
Timing
Input
Test
Point
From Output
Under Test
LOAD CIRCUIT
FOR 3-STATE OUTPUTS
3.5 V
High-Level
Pulse
1.3 V
R2
1.3 V
1.3 V
0.3 V
0.3 V
tsu
Data
Input
tw
th
3.5 V
1.3 V
3.5 V
Low-Level
Pulse
1.3 V
0.3 V
1.3 V
0.3 V
VOLTAGE WAVEFORMS
PULSE DURATIONS
VOLTAGE WAVEFORMS
SETUP AND HOLD TIMES
3.5 V
Output
Control
(low-level
enabling)
1.3 V
1.3 V
0.3 V
tPZL
Waveform 1
S1 Closed
(see Note B)
tPLZ
3.5 V
Input
tPZH
1.3 V
0.3 V
tPHL
tPLH
VOH
In-Phase
Output
VOL
0.3 V
1.3 V
1.3 V
VOL
tPLH
tPHL
VOH
1.3 V
1.3 V
[3.5 V
1.3 V
tPHZ
Waveform 2
S1 Open
(see Note B)
1.3 V
VOH
Out-of-Phase
Output
(see Note C)
0.3 V
[0 V
1.3 V
1.3 V
VOL
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES, 3-STATE OUTPUTS
NOTES: A. CL includes probe and jig capacitance.
B. Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control.
Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control.
C. When measuring propagation delay items of 3-state outputs, switch S1 is open.
D. All input pulses have the following characteristics: PRR ≤ 1 MHz, tr = tf = 2 ns, duty cycle = 50%.
E. The outputs are measured one at a time with one transition per measurement.
Figure 1. Load Circuits and Voltage Waveforms
8
•
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443
•
PACKAGE OPTION ADDENDUM
www.ti.com
14-Oct-2022
PACKAGING INFORMATION
Orderable Device
Status
(1)
Package Type Package Pins Package
Drawing
Qty
Eco Plan
(2)
Lead finish/
Ball material
MSL Peak Temp
Op Temp (°C)
Device Marking
(3)
Samples
(4/5)
(6)
5962-86869012A
ACTIVE
LCCC
FK
20
1
Non-RoHS
& Green
SNPB
N / A for Pkg Type
-55 to 125
596286869012A
SNJ54ALS
157AFK
5962-8686901EA
ACTIVE
CDIP
J
16
1
Non-RoHS
& Green
SNPB
N / A for Pkg Type
-55 to 125
5962-8686901EA
SNJ54ALS157AJ
Samples
5962-8862501EA
ACTIVE
CDIP
J
16
1
Non-RoHS
& Green
SNPB
N / A for Pkg Type
-55 to 125
5962-8862501EA
SNJ54ALS158J
Samples
SN54ALS157AJ
ACTIVE
CDIP
J
16
1
Non-RoHS
& Green
SNPB
N / A for Pkg Type
-55 to 125
SN54ALS157AJ
Samples
SN74ALS157AD
ACTIVE
SOIC
D
16
40
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
0 to 70
ALS157A
Samples
SN74ALS157ADR
ACTIVE
SOIC
D
16
2500
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
0 to 70
ALS157A
Samples
SN74ALS157AN
ACTIVE
PDIP
N
16
25
RoHS & Green
NIPDAU
N / A for Pkg Type
0 to 70
SN74ALS157AN
Samples
SN74ALS157ANSR
ACTIVE
SO
NS
16
2000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
0 to 70
ALS157A
Samples
SN74ALS158D
ACTIVE
SOIC
D
16
40
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
0 to 70
ALS158
Samples
SN74ALS158N
ACTIVE
PDIP
N
16
25
RoHS & Green
NIPDAU
N / A for Pkg Type
0 to 70
SN74ALS158N
Samples
SN74ALS158NSR
ACTIVE
SO
NS
16
2000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
0 to 70
ALS158
Samples
SN74AS157D
ACTIVE
SOIC
D
16
40
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
0 to 70
AS157
Samples
SN74AS157N
ACTIVE
PDIP
N
16
25
RoHS & Green
NIPDAU
N / A for Pkg Type
0 to 70
SN74AS157N
Samples
SN74AS158D
ACTIVE
SOIC
D
16
40
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
0 to 70
AS158
Samples
SN74AS158N
ACTIVE
PDIP
N
16
25
RoHS & Green
NIPDAU
N / A for Pkg Type
0 to 70
SN74AS158N
Samples
SNJ54ALS157AFK
ACTIVE
LCCC
FK
20
1
Non-RoHS
& Green
SNPB
N / A for Pkg Type
-55 to 125
596286869012A
SNJ54ALS
157AFK
SNJ54ALS157AJ
ACTIVE
CDIP
J
16
1
Non-RoHS
& Green
SNPB
N / A for Pkg Type
-55 to 125
5962-8686901EA
SNJ54ALS157AJ
Addendum-Page 1
Samples
Samples
Samples
PACKAGE OPTION ADDENDUM
www.ti.com
Orderable Device
14-Oct-2022
Status
(1)
Package Type Package Pins Package
Drawing
Qty
Eco Plan
(2)
Lead finish/
Ball material
MSL Peak Temp
Op Temp (°C)
(3)
Device Marking
Samples
(4/5)
(6)
SNJ54ALS158J
ACTIVE
CDIP
J
16
1
Non-RoHS
& Green
SNPB
N / A for Pkg Type
-55 to 125
5962-8862501EA
SNJ54ALS158J
(1)
The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2)
RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance
do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may
reference these types of products as "Pb-Free".
RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption.
Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of