Texas Instruments SN74AHCT157DGVR, SN74AHCT157DR, SN74AHCT157N, SN74AHCT157PWLE, SN74AHCT157PWR Datasheet
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SN54AHCT157, SN74AHCT157
QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS
SCLS347I – MAY 1996 – REVISED JANUAR Y 2000
D
EPIC
(Enhanced-Performance Implanted
CMOS) Process
D
Inputs Are TTL-Voltage Compatible
D
Latch-Up Performance Exceeds 250 mA Per
JESD 17
D
Package Options Include Plastic
Small-Outline (D), Shrink Small-Outline
(DB), Thin Very Small-Outline (DGV), Thin
Shrink Small-Outline (PW), and Ceramic
Flat (W) Packages, Ceramic Chip Carriers
(FK), and Standard Plastic (N) and Ceramic
(J) DIPs
description
These quadruple 2-line to 1-line data
selectors/multiplexers are designed for 4.5-V to
5.5-V V
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.
The SN54AHCT157 is characterized for
operation over the full military temperature range
of –55°C to 125°C. The SN74AHCT157 is
characterized for operation from –40°C to 85°C.
operation.
CC
SN54AHCT157 ...J OR W PACKAGE
SN74AHCT157 . . . D, DB, DGV, N, OR PW PACKAGE
SN54AHCT157 . . . FK PACKAGE
1B
1Y
NC
2A
2B
NC – No internal connection
(TOP VIEW)
1
A/B
2
1A
3
1B
4
1Y
5
2A
6
2B
7
2Y
GND
8
(TOP VIEW)
1A
3212019
4
5
6
7
8
910111213
2Y
A/B
GND
16
15
14
13
12
11
10
NC
NC
9
CC
V
3Y
V
G
4A
4B
4Y
3A
3B
3Y
G
18
17
16
15
14
3B
CC
4A
4B
NC
4Y
3A
G A/B A B
H X X X L
L LLX L
L LHX H
L HXL L
L H X H H
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.
EPIC is a trademark of 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.
FUNCTION TABLE
INPUTS
OUTPUT
Y
Copyright 2000, Texas Instruments Incorporated
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
1
SN54AHCT157, SN74AHCT157
QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS
SCLS347I – MAY 1996 – REVISED JANUAR Y 2000
logic symbol
†
This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
Pin numbers shown are for the D, DB, DGV, J, N, PW, and W packages.
†
15
A/B
1A
1B
2A
2B
3A
3B
4A
4B
G
1
2
3
5
6
11
10
14
13
EN
G1
1
1
MUX
logic diagram (positive logic)
2
1A
3
1B
12
4
1Y
7
2Y
9
3Y
4Y
4
1Y
5
2A
6
2B
11
3A
10
3B
14
4A
13
4B
15
G
1
A/B
Pin numbers shown are for the D, DB, DGV, J, N, PW, and W packages.
12
7
2Y
9
3Y
4Y
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
UNIT
SN54AHCT157, SN74AHCT157
QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS
SCLS347I – MAY 1996 – REVISED JANUAR Y 2000
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, V
(see Note 1) –0.5 V to VCC + 0.5 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
O
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, θ
(see Note 2): D package 73°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
JA
DB package 82°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DGV package 120°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
N package 67°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PW package 108°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, T
†
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.
–65°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
stg
recommended operating conditions (see Note 3)
SN54AHCT157 SN74AHCT157
MIN MAX MIN MAX
V
V
V
V
V
I
OH
I
OL
∆t/∆v Input transition rise or fall time 20 20 ns/V
T
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,
Supply voltage 4.5 5.5 4.5 5.5 V
CC
High-level input voltage 2 2 V
IH
Low-level input voltage 0.8 0.8 V
IL
Input voltage 0 5.5 0 5.5 V
I
Output voltage 0 V
O
High-level output current –8 –8 mA
Low-level output current 8 8 mA
Operating free-air temperature –55 125 –40 85 °C
A
Implications of Slow or Floating CMOS Inputs
, literature number SCBA004.
CC
0 V
CC
V
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.
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3
SN54AHCT157, SN74AHCT157
PARAMETER
TEST CONDITIONS
V
UNIT
V
4.5 V
V
V
4.5 V
V
PARAMETER
UNIT
A or B
Y
C
pF
ns
A/B
Y
C
15 pF
ns
G
Y
C
pF
ns
A or B
Y
C
pF
ns
A/B
Y
C
pF
ns
G
Y
C
pF
ns
PARAMETER
UNIT
QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS
SCLS347I – MAY 1996 – REVISED JANUAR Y 2000
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
CC
OH
OL
I
I
I
CC
∆I
CC
C
i
* 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.
IOH = –50 mA
IOH = –8 mA
IOL = 50 mA
IOL = 8 mA
VI = VCC or GND 0 V to 5.5 V ±0.1 ±1* ±1
VI = VCC or GND, IO = 0 5.5 V 2 20 20
One input at 3.4 V ,
†
Other inputs at VCC or GND
VI = VCC or GND 5 V 2 10 10 pF
5.5 V 1.35 1.5 1.5
switching characteristics over recommended operating free-air temperature range,
V
= 5 V ± 0.5 V (unless otherwise noted) (see Figure 1)
CC
FROM TO LOAD
(INPUT) (OUTPUT) CAPACITANCE
t
PLH
t
PHL
t
PLH
t
PHL
t
PLH
t
PHL
t
PLH
t
PHL
t
PLH
t
PLH
t
PLH
t
PHL
** On products compliant to MIL-PRF-38535, this parameter is not production tested.
= 15
L
=
L
= 15
L
= 50
L
= 50
L
= 50
L
p
p
p
p
p
p
TA = 25°C SN54AHCT157 SN74AHCT157
MIN TYP MAX MIN MAX MIN MAX
4.4 4.5 4.4 4.4
3.94 3.8 3.8
0.1 0.1 0.1
0.36 0.44 0.44
TA = 25°C SN54AHCT157 SN74AHCT157
MIN TYP MAX 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
m
A
m
A
m
A
noise characteristics V
V
V
V
V
V
NOTE 4: Characteristics are for surface-mount packages only.
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
OL(P)
OL(V)
OH(V)
IH(D)
IL(D)
= 5 V, CL = 50 pF, TA = 25°C (see Note 4)
CC
SN74AHCT157
MIN TYP MAX
Quiet output, maximum dynamic V
Quiet output, minimum dynamic V
Quiet output, minimum dynamic V
High-level dynamic input voltage 2 V
Low-level dynamic input voltage 0.8 V
OL
OL
OH
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
0.4 0.8 V
–0.4 –0.8 V
4.8 V
SN54AHCT157, SN74AHCT157
QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS
SCLS347I – MAY 1996 – REVISED JANUAR Y 2000
operating characteristics, V
C
Power dissipation capacitance No load, f = 1 MHz 11 pF
pd
PARAMETER MEASUREMENT INFORMATION
From Output
Under Test
(see Note A)
LOAD CIRCUIT FOR
TOTEM-POLE OUTPUTS
Input
Test
Point
C
L
t
w
1.5 V 1.5 V
VOLTAGE WAVEFORMS
PULSE DURATION
= 5 V, TA = 25°C
CC
PARAMETER TEST CONDITIONS TYP UNIT
V
CC
Open
GND
t
su
1.5 V 1.5 V
VOLTAGE WAVEFORMS
SETUP AND HOLD TIMES
t
PLH/tPHL
t
PLZ/tPZL
t
PHZ/tPZH
Open Drain
1.5 V
TEST S1
Open
V
CC
GND
V
CC
t
h
3 V
0 V
3 V
0 V
From Output
Under Test
C
(see Note A)
3-STATE AND OPEN-DRAIN OUTPUTS
L
LOAD CIRCUIT FOR
3 V
0 V
RL = 1 kΩ
S1
Timing Input
Data Input
Input
t
PLH
In-Phase
Output
t
PHL
Out-of-Phase
Output
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
INVERTING AND NONINVERTING 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. 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.
50% V
50% V
CC
CC
Figure 1. Load Circuit and Voltage Waveforms
t
PHL
50% V
t
PLH
50% V
3 V
0 V
V
CC
V
V
CC
V
OH
OL
OH
OL
Output
Control
Output
Waveform 1
S1 at V
(see Note B)
Waveform 2
(see Note B)
CC
Output
S1 at GND
1.5 V 1.5 V1.5 V 1.5 V
t
PZL
50% V
CC
t
PZH
50% V
CC
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES
LOW- AND HIGH-LEVEL ENABLING
t
PLZ
VOL + 0.3 V
t
PHZ
VOH – 0.3 V
3 V
0 V
≈V
V
OL
V
OH
≈0 V
CC
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5
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accordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extent
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performed, except those mandated by government requirements.
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Copyright 2000, Texas Instruments Incorporated
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