SN54AHCT157, SN74AHCT157
QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS
SCLS347K – MAY 1996 – REVISED JULY 2003
D
D
SN54AHCT157 . . . J OR W PACKAGE
SN74AHCT157 . . . D, DB, DGV, N, NS, OR PW PACKAGE
(TOP VIEW)
Inputs Are TTL-Voltage Compatible
Latch-Up Performance Exceeds 250 mA Per
JESD 17
A /B
1A
1B
1Y
2A
2B
2Y
GND
description/ordering information
These quadruple 2-line to 1-line data
selectors/multiplexers are designed for 4.5-V to
5.5-V VCC operation.
The ’AHCT157 devices feature a common strobe
(G) input. When the strobe is high, all outputs are
low. When the strobe is low, a 4-bit word is
selected from one of two sources and is routed to
the four outputs. The devices provide true data.
1
16
2
15
3
14
4
13
5
12
6
11
7
10
8
9
VCC
G
4A
4B
4Y
3A
3B
3Y
1A
A/B
NC
VCC
G
SN54AHCT157 . . . FK PACKAGE
(TOP VIEW)
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
NC – No internal connection
ORDERING INFORMATION
PDIP – N
SN74AHCT157N
Tube
SN74AHCT157D
Tape and reel
SN74AHCT157DR
SOP – NS
Tape and reel
SN74AHCT157NSR
AHCT157
SSOP – DB
Tape and reel
SN74AHCT157DBR
HB157
Tube
SN74AHCT157PW
Tape and reel
SN74AHCT157PWR
TVSOP – DGV
Tape and reel
SN74AHCT157DGVR
HB157
CDIP – J
Tube
SNJ54AHCT157J
SNJ54AHCT157J
CFP – W
Tube
SNJ54AHCT157W
SNJ54AHCT157W
LCCC – FK
Tube
SNJ54AHCT157K
SNJ54AHCT157FK
TSSOP – PW
–55°C to 125°C
TOP-SIDE
MARKING
Tube
SOIC – D
–40°C to 85°C
ORDERABLE
PART NUMBER
PACKAGE†
TA
SN74AHCT157N
AHCT157
HB157
† Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are
available at www.ti.com/sc/package.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
Copyright 2003, Texas Instruments Incorporated
UNLESS OTHERWISE NOTED this document contains PRODUCTION
DATA information current as of publication date. Products conform to
specifications per the terms of Texas Instruments standard warranty.
Production processing does not necessarily include testing of all
parameters.
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
1
SN54AHCT157, SN74AHCT157
QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS
SCLS347K – MAY 1996 – REVISED JULY 2003
FUNCTION TABLE
INPUTS
G
A/B
A
B
OUTPUT
Y
H
X
X
X
L
L
L
L
X
L
L
L
H
X
H
L
H
X
L
L
L
H
X
H
H
logic diagram (positive logic)
1A
2
4
1B
2A
3
5
7
2B
3A
6
4A
10
G
A/B
13
15
1
Pin numbers shown are for the D, DB, DGV, J, N, NS, PW, and W packages.
2
3Y
14
12
4B
2Y
11
9
3B
1Y
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
4Y
SN54AHCT157, SN74AHCT157
QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS
SCLS347K – MAY 1996 – REVISED JULY 2003
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)†
Supply voltage range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 7 V
Input voltage range, VI (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 7 V
Output voltage range, VO (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to VCC + 0.5 V
Input clamp current, IIK (VI < 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –20 mA
Output clamp current, IOK (VO < 0 or VO > VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20 mA
Continuous output current, IO (VO = 0 to VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±25 mA
Continuous current through VCC or GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±50 mA
Package thermal impedance, θJA (see Note 2): D package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73°C/W
DB package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82°C/W
DGV package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120°C/W
N package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67°C/W
NS package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64°C/W
PW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108°C/W
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –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.
NOTES: 1. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
2. The package thermal impedance is calculated in accordance with JESD 51-7.
recommended operating conditions (see Note 3)
SN54AHCT157
SN74AHCT157
MIN
MAX
MIN
MAX
4.5
5.5
4.5
5.5
UNIT
VCC
VIH
Supply voltage
VIL
VI
Low-level input voltage
0.8
V
Input voltage
0
5.5
0
5.5
V
VO
IOH
Output voltage
0
0
VCC
–8
V
High-level output current
VCC
–8
mA
IOL
∆t/∆v
Low-level output current
8
8
mA
20
20
ns/V
High-level input voltage
2
2
0.8
Input transition rise or fall time
V
V
TA
Operating free-air temperature
–55
125
–40
85
°C
NOTE 3: All unused inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report,
Implications of Slow or Floating CMOS Inputs, literature number SCBA004.
PRODUCT PREVIEW information concerns products in the formative or
design phase of development. Characteristic data and other
specifications are design goals. Texas Instruments reserves the right to
change or discontinue these products without notice.
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
3
SN54AHCT157, SN74AHCT157
QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS
SCLS347K – MAY 1996 – REVISED JULY 2003
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
VCC
IOH = –50 mA
VOH
4.4
45V
4.5
IOH = –8 mA
IOL = 50 mA
VOL
∆ICC†
TA = 25°C
TYP
MAX
MIN
4.5
SN74AHCT157
MAX
MIN
4.4
4.4
3.8
3.8
MAX
UNIT
V
0.1
0.1
0.1
0.36
0.44
0.44
±0.1
±1*
±1
mA
5.5 V
2
20
20
mA
5.5 V
1.35
1.5
1.5
mA
10
pF
0 V to 5.5 V
VI = VCC or GND,
IO = 0
One input at 3.4 V,
Other inputs at VCC or GND
SN54AHCT157
3.94
45V
4.5
IOL = 8 mA
VI = 5.5 V or GND
II
ICC
MIN
Ci
VI = VCC or GND
5V
2
10
* On products compliant to MIL-PRF-38535, this parameter is not production tested at VCC = 0 V.
† This is the increase in supply current for each input at one of the specified TTL voltage levels rather than 0 V or VCC.
V
switching characteristics over recommended operating free-air temperature range,
VCC = 5 V ± 0.5 V (unless otherwise noted) (see Figure 1)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
LOAD
CAPACITANCE
tPLH
tPHL
A or B
Y
CL = 15 pF
tPLH
tPHL
A/B
Y
CL = 15 pF
tPLH
tPHL
G
Y
CL = 15 pF
tPLH
tPHL
A or B
Y
CL = 50 pF
tPLH
tPLH
A/B
Y
CL = 50 pF
tPLH
tPHL
G
Y
CL = 50 pF
MIN
TA = 25°C
TYP
MAX
SN54AHCT157
SN74AHCT157
MIN
MAX
MIN
MAX
4.1**
6.4**
1**
7.5**
1
7.5
4.1**
6.4**
1**
7.5**
1
7.5
5.3**
8.1**
1**
9.5**
1
9.5
5.3**
8.1**
1**
9.5**
1
9.5
5.6**
8.6**
1**
10**
1
10
5.6**
8.6**
1**
10**
1
10
5.6
8.7
1
10.8
1
9.8
5.6
8.7
1
10.8
1
9.8
6.8
10.4
1
13.2
1
12
6.8
10.4
1
13.2
1
12
7.1
11
1
13.5
1
12
7.1
11
1
13.5
1
12
UNIT
ns
ns
ns
ns
ns
ns
** On products compliant to MIL-PRF-38535, this parameter is not production tested.
noise characteristics VCC = 5 V, CL = 50 pF, TA = 25°C (see Note 4)
SN74AHCT157
PARAMETER
MIN
MAX
UNIT
VOL(P)
Quiet output, maximum dynamic VOL
0.4
0.8
V
VOL(V)
Quiet output, minimum dynamic VOL
–0.4
–0.8
V
VOH(V)
Quiet output, minimum dynamic VOH
VIH(D)
High-level dynamic input voltage
4.8
V
2
VIL(D)
Low-level dynamic input voltage
NOTE 4: Characteristics are for surface-mount packages only.
POST OFFICE BOX 655303
V
0.8
PRODUCT PREVIEW information concerns products in the formative or
design phase of development. Characteristic data and other
specifications are design goals. Texas Instruments reserves the right to
change or discontinue these products without notice.
4
TYP
• DALLAS, TEXAS 75265
V
SN54AHCT157, SN74AHCT157
QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS
SCLS347K – MAY 1996 – REVISED JULY 2003
operating characteristics, VCC = 5 V, TA = 25°C
PARAMETER
Cpd
TEST CONDITIONS
Power dissipation capacitance
No load,
TYP
f = 1 MHz
UNIT
11
pF
PARAMETER MEASUREMENT INFORMATION
From Output
Under Test
Test
Point
RL = 1 kΩ
From Output
Under Test
VCC
Open
S1
TEST
GND
CL
(see Note A)
CL
(see Note A)
S1
tPLH/tPHL
tPLZ/tPZL
tPHZ/tPZH
Open Drain
Open
VCC
GND
VCC
LOAD CIRCUIT FOR
3-STATE AND OPEN-DRAIN OUTPUTS
LOAD CIRCUIT FOR
TOTEM-POLE OUTPUTS
3V
1.5 V
Timing Input
0V
tw
3V
1.5 V
Input
1.5 V
th
tsu
3V
1.5 V
Data Input
1.5 V
0V
0V
VOLTAGE WAVEFORMS
PULSE DURATION
VOLTAGE WAVEFORMS
SETUP AND HOLD TIMES
3V
1.5 V
Input
1.5 V
0V
tPLH
In-Phase
Output
tPHL
50% VCC
tPHL
Out-of-Phase
Output
VOH
50% VCC
VOL
Output
Waveform 1
S1 at VCC
(see Note B)
VOH
50% VCC
VOL
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
INVERTING AND NONINVERTING OUTPUTS
1.5 V
1.5 V
0V
tPZL
tPLZ
≈VCC
50% VCC
tPZH
tPLH
50% VCC
3V
Output
Control
Output
Waveform 2
S1 at GND
(see Note B)
VOL + 0.3 V
VOL
tPHZ
50% VCC
VOH – 0.3 V
VOH
≈0 V
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES
LOW- AND HIGH-LEVEL ENABLING
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. All input pulses are supplied by generators having the following characteristics: PRR ≤ 1 MHz, ZO = 50 Ω, tr ≤ 3 ns, tf ≤ 3 ns.
D. The outputs are measured one at a time with one input transition per measurement.
E. All parameters and waveforms are not applicable to all devices.
Figure 1. Load Circuit and Voltage Waveforms
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
5
PACKAGE OPTION ADDENDUM
www.ti.com
13-Aug-2021
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)
(4/5)
(6)
SN74AHCT157D
ACTIVE
SOIC
D
16
40
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
AHCT157
SN74AHCT157DBR
ACTIVE
SSOP
DB
16
2000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
HB157
SN74AHCT157DG4
ACTIVE
SOIC
D
16
40
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
AHCT157
SN74AHCT157DGVR
ACTIVE
TVSOP
DGV
16
2000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
HB157
SN74AHCT157DR
ACTIVE
SOIC
D
16
2500
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
AHCT157
SN74AHCT157N
ACTIVE
PDIP
N
16
25
RoHS & Green
NIPDAU
N / A for Pkg Type
-40 to 85
SN74AHCT157N
SN74AHCT157PW
ACTIVE
TSSOP
PW
16
90
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
HB157
SN74AHCT157PWR
ACTIVE
TSSOP
PW
16
2000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
HB157
(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