Texas Instruments SN54HC157J, SN74HC157D, SN74HC157DR, SN74HC157N, SN74HC157N3 Datasheet
...
G
Y
SN54HC157, SN74HC157
QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS
SCLS113B – DECEMBER 1982 – REVISED MAY 1997
D
Package Options Include Plastic
Small-Outline (D) and Ceramic Flat (W)
Packages, Ceramic Chip Carriers (FK), and
Standard Plastic (N) and Ceramic (J)
300-mil DIPs
description
These monolithic data selectors/multiplexers
contain inverters and drivers to supply full data
selection to the four output gates. A separate
strobe (G
selected from one of two sources and is routed to
the four outputs. The ’HC157 present true data.
The SN54HC157 is characterized for operation
over the full military temperature range of –55°C
to 125°C. The SN74HC157 is characterized for
operation from –40°C to 85°C.
) input is provided. A 4-bit word is
FUNCTION TABLE
INPUTS
SELECT
A/B
H X X X L
L L L XL
L L H XH
L H X LL
L H X H H
DATA
A B
OUTPUT
SN54HC157 ...J OR W PACKAGE
SN74HC157 . . . D OR N PACKAGE
SN54HC157 . . . FK PACKAGE
1B
1Y
NC
2A
2B
NC – No internal connection
(TOP VIEW)
A/B
1
1A
2
1B
3
1Y
4
5
2A
6
2B
7
2Y
GND
8
(TOP VIEW)
1A
3212019
4
5
6
7
8
910111213
2Y
A/B
GND
NC
NC
16
15
14
13
12
11
10
9
V
3Y
CC
V
G
4A
4B
4Y
3A
3B
3Y
G
18
17
16
15
14
3B
CC
4A
4B
NC
4Y
3A
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, J, N, and W packages.
PRODUCTION DATA information is 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.
†
15
G
1
A/B
2
1A
3
1B
5
2A
6
2B
11
3A
10
3B
14
4A
13
4B
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.
EN
G1
1
1
MUX
4
1Y
7
2Y
9
3Y
12
4Y
Copyright 1997, Texas Instruments Incorporated
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
1
SN54HC157, SN74HC157
QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS
SCLS113B – DECEMBER 1982 – REVISED MAY 1997
logic diagram (positive logic)
2
1A
3
1B
5
2A
6
2B
11
3A
10
3B
14
4A
4
1Y
7
2Y
9
3Y
12
13
4B
15
G
1
A/B
Pin numbers shown are for the D, J, N, and W packages.
absolute maximum ratings over operating free-air temperature range
†
4Y
Supply voltage range, VCC –0.5 V to 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input clamp current, IIK (VI < 0 or VI > VCC) (see Note 1) ±20 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output clamp current, I
(VO < 0 or VO > VCC) (see Note 1) ±20 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
OK
Continuous output current, IO (VO = 0 to VCC) ±35 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous current through VCC or GND ±70 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Package thermal impedance, θ
(see Note 2): D package 113°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
JA
N package 78°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, except for through-hole packages, which use a trace
length of zero.
–65°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
stg
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
UNIT
PARAMETER
TEST CONDITIONS
V
UNIT
QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS
recommended operating conditions
V
V
V
V
V
t
t
T
Supply voltage 2 5 6 2 5 6 V
CC
High-level input voltage
IH
Low-level input voltage
IL
Input voltage 0 V
I
Output voltage 0 V
O
Input transition (rise and fall) time
Operating free-air temperature –55 125 –40 85 °C
A
SN54HC157, SN74HC157
SCLS113B – DECEMBER 1982 – REVISED MAY 1997
SN54HC157 SN74HC157
MIN NOM MAX MIN NOM MAX
VCC = 2 V 1.5 1.5
VCC = 4.5 V
VCC = 6 V 4.2 4.2
VCC = 2 V 0 0.5 0 0.5
VCC = 4.5 V
VCC = 6 V 0 1.8 0 1.8
VCC = 2 V 0 1000 0 1000
VCC = 4.5 V
VCC = 6 V 0 400 0 400
3.15 3.15
0 1.35 0 1.35
CC
CC
0 500 0 500
0 V
0 V
CC
CC
V
V
V
V
ns
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
TA = 25°C SN54HC157 SN74HC157
MIN TYP MAX MIN MAX MIN MAX
V
V
V
V
I
I
C
OH
OL
I
CC
i
CC
2 V 1.9 1.998 1.9 1.9
IOH = –20 µA
VI = VIH or V
VI = VIH or V
VI = VCC or 0 6 V ±0.1 ±100 ±1000 ±1000 nA
VI = VCC or 0, IO = 0 6 V 8 160 80 µA
IL
IOH = –6 mA 4.5 V 3.98 4.3 3.7 3.84
IOH = –7.8 mA 6 V 5.48 5.8 5.2 5.34
IOL = 20 µA
IL
IOL = 6 mA 4.5 V 0.17 0.26 0.4 0.33
IOL = 7.8 mA 6 V 0.15 0.26 0.4 0.33
4.5 V 4.4 4.499 4.4 4.4
6 V 5.9 5.999 5.9 5.9
2 V 0.002 0.1 0.1 0.1
4.5 V 0.001 0.1 0.1 0.1
6 V 0.001 0.1 0.1 0.1
2 V to 6 V 3 10 10 10 pF
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
3
SN54HC157, SN74HC157
PARAMETER
V
UNIT
PARAMETER
V
UNIT
QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS
SCLS113B – DECEMBER 1982 – REVISED MAY 1997
switching characteristics over recommended operating free-air temperature range, CL = 50 pF
(unless otherwise noted) (see Figure 1)
FROM TO
(INPUT) (OUTPUT)
A or B Y
t
pd
t
t
A/B Y
G Y
Y
CC
2 V 63 125 190 160
4.5 V 13 25 38 32
6 V 11 21 32 27
2 V 67 125 190 160
4.5 V 18 25 38 31
6 V 14 21 32 27
2 V 59 115 170 145
4.5 V 16 23 34 29
6 V 13 20 29 25
2 V 28 60 90 75
4.5 V 8 12 18 15
6 V 6 10 15 13
switching characteristics over recommended operating free-air temperature range, CL = 150 pF
(unless otherwise noted) (see Figure 1)
FROM TO
(INPUT) (OUTPUT)
A or B Y
t
pd
t
t
A/B Y
G Y
Y
CC
2 V 81 190 290 235
4.5 V 23 38 58 47
6 V 18 33 49 41
2 V 81 210 320 260
4.5 V 23 42 64 52
6 V 18 36 54 45
2 V 91 190 290 235
4.5 V 24 38 58 47
6 V 18 33 49 41
2 V 45 210 315 265
4.5 V 17 42 63 53
6 V 13 36 53 45
TA = 25°C SN54HC157 SN74HC157
MIN TYP MAX MIN MAX MIN MAX
ns
ns
TA = 25°C SN54HC157 SN74HC157
MIN TYP MAX MIN MAX MIN MAX
ns
ns
operating characteristics, TA = 25°C
4
PARAMETER TEST CONDITIONS TYP UNIT
C
Power dissipation capacitance No load 40 pF
pd
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
Input
From Output
Under Test
LOAD CIRCUIT
90% 90%
t
r
SN54HC157, SN74HC157
QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS
SCLS113B – DECEMBER 1982 – REVISED MAY 1997
PARAMETER MEASUREMENT INFORMATION
V
Test
Point
C
L
(see Note A)
Input
In-Phase
Output
V
50%50%
CC
10%10%
0 V
t
f
Out-of-Phase
Output
50%
t
t
PLH
PHL
50%
t
PHL
90% 90%
t
r
t
PLH
50% 50%
10% 10%
t
f
50%50%
CC
0 V
V
OH
10%10%
V
OL
t
f
V
OH
90%90%
V
OL
t
r
VOLTAGE WAVEFORM
INPUT RISE AND FALL TIMES
NOTES: A. CL includes probe and test-fixture capacitance.
B. Phase relationships between waveforms were chosen arbitrarily. All input pulses are supplied by generators having the following
characteristics: PRR ≤ 1 MHz, ZO = 50 Ω, tr = 6 ns, tf = 6 ns.
C. The outputs are measured one at a time with one input transition per measurement.
D. t
PLH
and t
are the same as tpd.
PHL
Figure 1. Load Circuit and Voltage Waveforms
PROPAGATION DELAY AND OUTPUT TRANSITION TIMES
VOLTAGE WAVEFORMS
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
5
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accordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extent
TI deems necessary to support this warranty . Specific testing of all parameters of each device is not necessarily
performed, except those mandated by government requirements.
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Copyright 1998, Texas Instruments Incorporated
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