SN54LVC157A, SN74LVC157A
QUADRUPLE 2 LINE TO 1 LINE DATA SELECTORS/MULTIPLEXERS
SCAS292N - JANUARY 1993 - REVISED MAY 2003
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
D
Operate From 1.65 V to 3.6 V
D
Inputs Accept Voltages to 5.5 V
D
Max t
pd
of 5.2 ns at 3.3 V
D
Typical V
OLP
(Output Ground Bounce)
<0.8 V at V
CC
= 3.3 V, T
A
= 25
C
D
Typical V
OHV
(Output V
OH
Undershoot)
>2 V at V
CC
= 3.3 V, T
A
= 25
C
D
Latch-Up Performance Exceeds 250 mA Per
JESD 17
D
ESD Protection Exceeds JESD 22
- 2000-V Human-Body Model (A114-A)
- 200-V Machine Model (A115-A)
- 1000-V Charged-Device Model (C101)
SN54LVC157A . . . J OR W PACKAGE
SN74LVC157A . . . D, DB, NS,
OR PW PACKAGE
(TOP VIEW)
3
2 1 20 19
9 10 11 12 13
4
5
6
7
8
18
17
16
15
14
4A
4B
NC
4Y
3A
SN54LVC157A . . . FK PACKAGE
(TOP VIEW)
1A
A/B
NC
3Y
3B
V
G
2Y
GND
NC
CC
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
A /B
1A
1B
1Y
2A
2B
2Y
GND
V
CC
G
4A
4B
4Y
3A
3B
3Y
NC - No internal connection
1B
1Y
NC
2A
2B
SN74LVC157A . . . RGY PACKAGE
(TOP VIEW)
1
16
8
9
2
3
4
5
6
7
15
14
13
12
11
10
G
4A
4B
4Y
3A
3B
1A
1B
1Y
2A
2B
2Y
A/B
3Y
V
GND
CC
description/ordering information
These quadruple 2-line to 1-line data selectors/multiplexers are designed for 1.65-V to 3.6-V V
CC
operation.
The 'LVC157A devices feature a common strobe (G) input. When G is high, all outputs are low. When G 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.
Inputs can be driven from either 3.3-V or 5-V devices. This feature allows the use of these devices as translators
in a mixed 3.3-V/5-V system environment.
ORDERING INFORMATION
TA
PACKAGE
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
QFN - RGY
Tape and reel
SN74LVC157ARGYR
LC157A
SOIC - D
Tube
SN74LVC157AD
LVC157A
SOIC - D
Tape and reel
SN74LVC157ADR
LVC157A
-40
C to 85
C
SOP - NS
Tape and reel
SN74LVC157ANSR
LVC157A
-40 C to 85 C
SSOP - DB
Tape and reel
SN74LVC157ADBR
LC157A
TSSOP - PW
Tube
SN74LVC157APW
LC157A
TSSOP - PW
Tape and reel
SN74LVC157APWR
LC157A
CDIP - J
Tube
SNJ54LVC157AJ
SNJ54LVC157AJ
-55
C to 125
C
CFP - W
Tube
SNJ54LVC157AW
SNJ54LVC157AW
-55 C to 125 C
LCCC - FK
Tube
SNJ54LVC157AFK
SNJ54LVC157AFK
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are
available at www.ti.com/sc/package.
Copyright
2003, 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.
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.
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.
SN54LVC157A, SN74LVC157A
QUADRUPLE 2 LINE TO 1 LINE DATA SELECTORS/MULTIPLEXERS
SCAS292N - JANUARY 1993 - REVISED MAY 2003
2
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
FUNCTION TABLE
INPUTS
OUTPUT
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)
2
3
5
6
11
10
14
13
15
1
G
A/B
4B
4A
3B
3A
2B
2A
1B
1A
4
7
9
12
1Y
2Y
3Y
4Y
Pin numbers shown are for the D, DB, J, NS, PW, RGY, and W packages.
SN54LVC157A, SN74LVC157A
QUADRUPLE 2 LINE TO 1 LINE DATA SELECTORS/MULTIPLEXERS
SCAS292N - JANUARY 1993 - REVISED MAY 2003
3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, V
CC
-0.5 V to 6.5 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage range, V
I
(see Note 1)
-0.5 V to 6.5 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output voltage range, V
O
(see Notes 1 and 2)
-0.5 V to V
CC
+ 0.5 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input clamp current, I
IK
(V
I
< 0)
-50 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output clamp current, I
OK
(V
O
< 0)
-50 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous output current, I
O
50 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous current through V
CC
or GND
100 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Package thermal impedance,
JA
(see Note 3): D package
73
C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(see Note 3): DB package
82
C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(see Note 3): NS package
64
C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(see Note 3): PW package
108
C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(see Note 4): RGY package
39
C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, T
stg
-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 negative-voltage and output voltage ratings may be exceeded if the input and output current ratings are observed.
2. The value of VCC is provided in the recommended operating conditions table.
3. The package thermal impedance is calculated in accordance with JESD 51-7.
4. The package thermal impedance is calculated in accordance with JESD 51-5.
recommended operating conditions (see Note 5)
SN54LVC157A
SN74LVC157A
UNIT
MIN
MAX
MIN
MAX
UNIT
VCC
Supply voltage
Operating
2
3.6
1.65
3.6
V
VCC
Supply voltage
Data retention only
1.5
1.5
V
VCC = 1.65 V to 1.95 V
0.65
VCC
VIH
High-level input voltage
VCC = 2.3 V to 2.7 V
1.7
V
VIH
High-level input voltage
VCC = 2.7 V to 3.6 V
2
2
V
VCC = 1.65 V to 1.95 V
0.35
VCC
VIL
Low-level input voltage
VCC = 2.3 V to 2.7 V
0.7
V
VIL
Low-level input voltage
VCC = 2.7 V to 3.6 V
0.8
0.8
V
VI
Input voltage
0
5.5
0
5.5
V
VO
Output voltage
0
VCC
0
VCC
V
VCC = 1.65 V
-4
IOH
High-level output current
VCC = 2.3 V
-8
mA
IOH
High-level output current
VCC = 2.7 V
-12
-12
mA
VCC = 3 V
-24
-24
VCC = 1.65 V
4
IOL
Low-level output current
VCC = 2.3 V
8
mA
IOL
Low-level output current
VCC = 2.7 V
12
12
mA
VCC = 3 V
24
24
t/
v
Input transition rise or fall rate
10
10
ns/V
TA
Operating free-air temperature
-55
125
-40
85
C
NOTE 5: 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.
SN54LVC157A, SN74LVC157A
QUADRUPLE 2 LINE TO 1 LINE DATA SELECTORS/MULTIPLEXERS
SCAS292N - JANUARY 1993 - REVISED MAY 2003
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
VCC
SN54LVC157A
SN74LVC157A
UNIT
PARAMETER
TEST CONDITIONS
VCC
MIN
MAX
MIN
TYP
MAX
UNIT
IOH = -100 A
1.65 V to 3.6 V
VCC-0.2
IOH = -100
A
2.7 V to 3.6 V
VCC-0.2
IOH = -4 mA
1.65 V
1.2
VOH
IOH = -8 mA
2.3 V
1.7
V
VOH
IOH = -12 mA
2.7 V
2.2
2.2
V
IOH = -12 mA
3 V
2.4
2.4
IOH = -24 mA
3 V
2.2
2.2
IOL = 100 A
1.65 V to 3.6 V
0.2
IOL = 100
A
2.7 V to 3.6 V
0.2
VOL
IOL = 4 mA
1.65 V
0.45
V
VOL
IOL = 8 mA
2.3 V
0.7
V
IOL = 12 mA
2.7 V
0.4
0.4
IOL = 24 mA
3 V
0.55
0.55
II
All inputs
VI = 5.5 V or GND
3.6 V
5
5
A
ICC
VI = VCC or GND,
IO = 0
3.6 V
10
10
A
ICC
One input at VCC - 0.6 V,
Other inputs at VCC or GND
2.7 V to 3.6 V
500
500
A
Ci
VI = VCC or GND
3.3 V
5
pF
All typical values are at VCC = 3.3 V, TA = 25
C.
switching characteristics over recommended operating free-air temperature range (unless
otherwise noted) (see Figure 1)
SN54LVC157A
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
VCC = 2.7 V
VCC = 3.3 V
0.3 V
UNIT
(INPUT)
(OUTPUT)
MIN
MAX
MIN
MAX
A or B
6.2
0.8
5.4
tpd
A/B
Y
8.2
0.8
7
ns
tpd
G
Y
7.8
0.8
6.5
ns
switching characteristics over recommended operating free-air temperature range (unless
otherwise noted) (see Figure 1)
SN74LVC157A
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
VCC = 1.8 V
0.15 V
VCC = 2.5 V
0.2 V
VCC = 2.7 V
VCC = 3.3 V
0.3 V
UNIT
(INPUT)
(OUTPUT)
MIN
MAX
MIN
MAX
MIN
MAX
MIN
MAX
A or B
1
14
1
7.9
1
5.9
1
5.2
tpd
A/B
Y
1
16
1
10.1
1
8.1
1
6.8
ns
tpd
G
Y
1
14
1
9.8
1
7.8
1
6.5
ns
tsk(o)
2
1
ns
SN54LVC157A, SN74LVC157A
QUADRUPLE 2 LINE TO 1 LINE DATA SELECTORS/MULTIPLEXERS
SCAS292N - JANUARY 1993 - REVISED MAY 2003
5
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
operating characteristics, T
A
= 25
C
PARAMETER
TEST
VCC = 1.8 V VCC = 2.5 V VCC = 3.3 V
UNIT
PARAMETER
TEST
CONDITIONS
TYP
TYP
TYP
UNIT
Cpd
Power dissipation capacitance
f = 10 MHz
14*
15*
16
pF
* On products compliant to MIL-PRF-38535, this parameter does not apply.
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