Texas Instruments SN74AHC157D, SN74AHC157DBLE, SN74AHC157DBR, SN74AHC157DGVR, SN74AHC157DR Datasheet
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SN54AHC157, SN74AHC157
QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS
SCLS345F – MAY 1996 – REVISED JANUAR Y 2000
D
EPIC
(Enhanced-Performance Implanted
CMOS) Process
D
Operating Range 2-V to 5.5-V V
D
Latch-Up Performance Exceeds 250 mA Per
CC
JESD 17
D
ESD Protection Exceeds 2000 V Per
MIL-STD-833, Method 3015; Exceeds 200 V
Using Machine Model (C = 200 pF, R = 0)
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 2-V to
5.5-V V
The ’AHC157 devices feature a common strobe
) input. When the strobe is high, all outputs are
(G
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 SN54AHC157 is characterized for operation
over the full military temperature range of –55°C
to 125°C. The SN74AHC157 is characterized for
operation from –40°C to 85°C.
operation.
CC
SN54AHC157 ...J OR W PACKAGE
SN74AHC157 . . . D, DB, DGV, N, OR PW PACKAGE
SN54AHC157 . . . 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
NC
NC
16
15
14
13
12
11
10
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.
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.
FUNCTION TABLE
INPUTS
OUTPUT
Y
Copyright 2000, Texas Instruments Incorporated
On products compliant to MIL-PRF-38535, all parameters are tested
unless otherwise noted. On all other products, production
processing does not necessarily include testing of all parameters.
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
1
SN54AHC157, SN74AHC157
QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS
SCLS345F – 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
mA
mA
∆t/∆vInput transition rise or fall rate
ns/V
SN54AHC157, SN74AHC157
QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS
SCLS345F – 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, except for through-hole packages, which use a trace
length of zero.
–65°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
stg
recommended operating conditions (see Note 3)
SN54AHC157 SN74AHC157
MIN MAX MIN MAX
V
V
V
V
V
I
OH
I
OL
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 2 5.5 2 5.5 V
CC
VCC = 2 V 1.5 1.5
High-level input voltage
IH
Low-level input voltage
IL
Input voltage 0 5.5 0 5.5 V
I
Output voltage 0 V
O
High-level output current
Low-level output current
p
Operating free-air temperature –55 125 –40 85 °C
A
Implications of Slow or Floating CMOS Inputs
, literature number SCBA004.
VCC = 3 V
VCC = 5.5 V 3.85 3.85
VCC = 2 V 0.5 0.5
VCC = 3 V
VCC = 5.5 V 1.65 1.65
VCC = 2 V –50 –50
VCC = 3.3 V ± 0.3 V
VCC = 5 V ± 0.5 V –8 –8
VCC = 2 V 50 50
VCC = 3.3 V ± 0.3 V
VCC = 5 V ± 0.5 V 8 8
VCC = 3.3 V ± 0.3 V 100 100
VCC = 5 V ± 0.5 V 20 20
2.1 2.1
0.9 0.9
CC
–4 –4
4 4
0 V
CC
V
V
V
m
A
m
A
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
3
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