SN74LVC157AD [TI]
QUADRUPLE 2-LINE TO 1-LINE DATA SELECTOR/MULTIPLEXER; 四路2号线到1线数据选择器/多路复用器型号: | SN74LVC157AD |
厂家: | TEXAS INSTRUMENTS |
描述: | QUADRUPLE 2-LINE TO 1-LINE DATA SELECTOR/MULTIPLEXER |
文件: | 总8页 (文件大小:126K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
SN74LVC157A
QUADRUPLE 2-LINE TO 1-LINE DATA SELECTOR/MULTIPLEXER
SCAS292G – JANUARY 1993 – REVISED OCTOBER 1998
D, DB, OR PW PACKAGE
EPIC (Enhanced-Performance Implanted
CMOS) Submicron Process
Typical V (Output Ground Bounce)
(TOP VIEW)
OLP
A/B
1A
V
CC
G
1
2
3
4
5
6
7
8
16
15
14
13
< 0.8 V at V
= 3.3 V, T = 25°C
CC
A
Typical V
> 2 V at V
(Output V
Undershoot)
OHV
CC
OH
1B
4A
4B
= 3.3 V, T = 25°C
A
1Y
Inputs Accept Voltages to 5.5 V
2A
12 4Y
11
10
9
2B
3A
3B
3Y
ESD Protection Exceeds 2000 V Per
MIL-STD-883, Method 3015; Exceeds 200 V
Using Machine Model (C = 200 pF, R = 0)
2Y
GND
Latch-Up Performance Exceeds 250 mA Per
JESD 17
Package Options Include Plastic
Small-Outline (D), Shrink Small-Outline
(DB), and Thin Shrink Small-Outline (PW)
Packages
description
This quadruple 2-line to 1-line data selector/multiplexer is designed for 1.65-V to 3.6-V V
operation.
CC
The SN74LVC157A features 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 device
provides 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.
The SN74LVC157A is characterized for operation from –40°C to 85°C.
FUNCTION TABLE
INPUTS
OUTPUT
Y
G
H
L
A/B
A
X
L
B
X
X
X
L
X
L
L
L
L
L
H
X
X
H
L
L
H
H
L
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.
Copyright 1998, 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.
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN74LVC157A
QUADRUPLE 2-LINE TO 1-LINE DATA SELECTOR/MULTIPLEXER
SCAS292G – JANUARY 1993 – REVISED OCTOBER 1998
†
logic symbol
15
G
EN
G1
1
A/B
2
4
7
1A
1B
2A
2B
3A
3B
4A
4B
1
1
MUX
1Y
2Y
3
5
6
11
10
14
13
9
3Y
4Y
12
†
This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
logic diagram (positive logic)
2
1A
4
1Y
2Y
3Y
4Y
3
1B
5
2A
7
9
6
2B
11
3A
10
3B
14
4A
12
13
4B
15
G
1
A/B
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN74LVC157A
QUADRUPLE 2-LINE TO 1-LINE DATA SELECTOR/MULTIPLEXER
SCAS292G – JANUARY 1993 – REVISED OCTOBER 1998
†
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 6.5 V
CC
Input voltage range, V (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 6.5 V
I
Output voltage range, V (see Notes 1 and 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to V
+ 0.5 V
O
CC
Input clamp current, I (V < 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –50 mA
IK
I
Output clamp current, I
(V < 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –50 mA
OK
O
Continuous output current, I . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±50 mA
Continuous current through V
Package thermal impedance, θ (see Note 3): D package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113°C/W
O
or GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±100 mA
CC
JA
DB package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131°C/W
PW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149°C/W
Storage temperature range, T
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to 150°C
stg
†
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 V is provided in the recommended operating conditions table.
CC
3. The package thermal impedance is calculated in accordance with JESD 51.
recommended operating conditions (see Note 4)
MIN
1.65
1.5
MAX
UNIT
Operating
3.6
V
Supply voltage
V
CC
IH
Data retention only
V
CC
V
CC
V
CC
V
CC
V
CC
V
CC
= 1.65 V to 1.95 V
= 2.3 V to 2.7 V
= 2.7 V to 3.6 V
= 1.65 V to 1.95 V
= 2.3 V to 2.7 V
= 2.7 V to 3.6 V
0.65 × V
1.7
CC
V
High-level input voltage
V
V
2
0.35 × V
0.7
CC
V
IL
Low-level input voltage
0.8
V
V
Input voltage
0
0
5.5
V
V
I
Output voltage
V
O
CC
–4
V
CC
V
CC
V
CC
V
CC
V
CC
V
CC
V
CC
V
CC
= 1.65 V
= 2.3 V
= 2.7 V
= 3 V
–8
I
High-level output current
Low-level output current
mA
mA
OH
OL
–12
–24
4
= 1.65 V
= 2.3 V
= 2.7 V
= 3 V
8
I
12
24
10
∆t/∆v
Input transition rise or fall rate
Operating free-air temperature
0
ns/V
T
A
–40
85
°C
NOTE 4: All unused inputs of the device must be held at V
or GND to ensure proper device operation. Refer to the TI application report,
CC
Implications of Slow or Floating CMOS Inputs, literature number SCBA004.
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN74LVC157A
QUADRUPLE 2-LINE TO 1-LINE DATA SELECTOR/MULTIPLEXER
SCAS292G – JANUARY 1993 – REVISED OCTOBER 1998
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
†
PARAMETER
TEST CONDITIONS
MIN TYP
–0.2
MAX
UNIT
V
CC
I
I
I
= –100 µA
= –4 mA
= –8 mA
1.65 V to 3.6 V
1.65 V
2.3 V
V
OH
OH
OH
CC
1.2
1.7
2.2
2.4
2.2
V
V
V
OH
2.7 V
I
= –12 mA
OH
3 V
I
I
I
I
I
I
= –24 mA
= 100 µA
= 4 mA
3 V
OH
OL
OL
OL
OL
OL
1.65 V to 3.6 V
1.65 V
2.3 V
0.2
0.45
0.7
= 8 mA
V
OL
= 12 mA
= 24 mA
2.7 V
0.4
3 V
0.55
±5
I
I
V = 5.5 V or GND
3.6 V
µA
µA
I
I
V = V
or GND,
I = 0
O
3.6 V
10
CC
I
CC
One input at V
– 0.6 V,
or GND
CC
Other inputs at V
∆I
CC
2.7 V to 3.6 V
3.3 V
500
µA
CC
or GND
C
V = V
I
5
pF
i
CC
†
All typical values are at V
= 3.3 V, T = 25°C.
CC
A
switching characteristics over recommended operating free-air temperature range (unless
otherwise noted) (see Figures 1 through 3)
V
= 2.5 V
V
= 3.3 V
CC
± 0.2 V
CC
± 0.3 V
V
CC
= 1.8 V
V
= 2.7 V
FROM
(INPUT)
TO
(OUTPUT)
CC
PARAMETER
UNIT
TYP
MIN
1
MAX
7.9
MIN
MAX
5.9
MIN
1
MAX
5.2
6.8
6.5
1
A or B
A/B
G
13.9
16.1
15.8
t
t
Y
1
10.1
9.8
8.1
1
ns
ns
pd
1
7.8
1
‡
sk(o)
‡
Skew between any two outputs of the same package switching in the same direction
operating characteristics, T = 25°C
A
V
= 1.8 V
V
= 2.5 V
V = 3.3 V
CC
TEST
CONDITIONS
CC
TYP
14
CC
TYP
15
PARAMETER
UNIT
TYP
C
Power dissipation capacitance
f = 10 MHz
16
pF
pd
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN74LVC157A
QUADRUPLE 2-LINE TO 1-LINE DATA SELECTOR/MULTIPLEXER
SCAS292G – JANUARY 1993 – REVISED OCTOBER 1998
PARAMETER MEASUREMENT INFORMATION
V
= 1.8 V ± 0.15 V
CC
2 × V
CC
Open
S1
1 kΩ
From Output
Under Test
TEST
S1
GND
t
Open
pd
/t
C
= 30 pF
t
2 × V
CC
Open
L
PLZ PZL
1 kΩ
(see Note A)
t
/t
PHZ PZH
LOAD CIRCUIT
t
w
V
CC
V
CC
V
CC
/2
V
CC
/2
Input
Timing
Input
V
/2
CC
0 V
0 V
VOLTAGE WAVEFORMS
PULSE DURATION
t
su
t
h
V
CC
Output
Control
(low-level
enabling)
Data
Input
V
CC
V
/2
V
CC
/2
CC
V
CC
/2
V
CC
/2
0 V
0 V
VOLTAGE WAVEFORMS
SETUP AND HOLD TIMES
t
t
PZL
PLZ
Output
Waveform 1
V
CC
V
CC
V
/2
CC
Input
V
CC
/2
V
CC
/2
S1 at 2 × V
(see Note B)
V
V
+ 0.15 V
V
CC
OL
0 V
OL
t
t
PZH
PHZ
t
t
PLH
PHL
Output
Waveform 2
S1 at Open
(see Note B)
V
OH
V
V
OH
– 0.15 V
OH
V
/2
CC
Output
V
CC
/2
V
CC
/2
0 V
OL
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES
NOTES: A.
C
L
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 ≤ 10 MHz, Z = 50 Ω, t ≤ 2 ns, t ≤ 2 ns.
O
r
f
D. The outputs are measured one at a time with one transition per measurement.
E.
F.
G.
t
t
t
and t
and t
and t
PHL
are the same as t
.
dis
PLZ
PZL
PLH
PHZ
PZH
are the same as t
.
en
are the same as t .
pd
Figure 1. Load Circuit and Voltage Waveforms
5
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN74LVC157A
QUADRUPLE 2-LINE TO 1-LINE DATA SELECTOR/MULTIPLEXER
SCAS292G – JANUARY 1993 – REVISED OCTOBER 1998
PARAMETER MEASUREMENT INFORMATION
V
= 2.5 V ± 0.2 V
CC
2 × V
CC
Open
S1
500 Ω
From Output
Under Test
TEST
S1
GND
t
Open
pd
/t
C
= 30 pF
t
2 × V
CC
GND
L
PLZ PZL
500 Ω
(see Note A)
t
/t
PHZ PZH
LOAD CIRCUIT
t
w
V
CC
V
CC
V
CC
/2
V
CC
/2
Input
Timing
Input
V
/2
CC
0 V
0 V
VOLTAGE WAVEFORMS
PULSE DURATION
t
su
t
h
V
CC
Output
Control
(low-level
enabling)
Data
Input
V
CC
V
/2
V
CC
/2
CC
V
CC
/2
V
CC
/2
0 V
0 V
VOLTAGE WAVEFORMS
SETUP AND HOLD TIMES
t
t
PZL
PLZ
Output
Waveform 1
V
CC
V
CC
V
/2
CC
Input
V
CC
/2
V
CC
/2
S1 at 2 × V
(see Note B)
V
V
+ 0.15 V
V
CC
OL
0 V
OL
t
t
PZH
PHZ
t
t
PLH
PHL
Output
Waveform 2
S1 at GND
V
OH
V
V
OH
– 0.15 V
OH
V
/2
CC
Output
V
CC
/2
V
CC
/2
0 V
OL
(see Note B)
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES
NOTES: A.
C
L
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 ≤ 10 MHz, Z = 50 Ω, t ≤ 2 ns, t ≤ 2 ns.
O
r
f
D. The outputs are measured one at a time with one transition per measurement.
E.
F.
G.
t
t
t
and t
and t
and t
PHL
are the same as t
.
dis
PLZ
PZL
PLH
PHZ
PZH
are the same as t
.
en
are the same as t .
pd
Figure 2. Load Circuit and Voltage Waveforms
6
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN74LVC157A
QUADRUPLE 2-LINE TO 1-LINE DATA SELECTOR/MULTIPLEXER
SCAS292G – JANUARY 1993 – REVISED OCTOBER 1998
PARAMETER MEASUREMENT INFORMATION
V
= 2.7 V AND 3.3 V ± 0.3 V
CC
6 V
TEST
S1
S1
500 Ω
Open
GND
t
Open
6 V
pd
/t
From Output
Under Test
t
PLZ PZL
/t
t
GND
PHZ PZH
C
= 50 pF
L
500 Ω
(see Note A)
t
w
LOAD CIRCUIT
2.7 V
0 V
1.5 V
1.5 V
Input
2.7 V
0 V
Timing
Input
1.5 V
VOLTAGE WAVEFORMS
PULSE DURATION
t
su
t
h
2.7 V
0 V
Data
Input
2.7 V
0 V
1.5 V
1.5 V
Output
Control
(low-level
enabling)
1.5 V
1.5 V
VOLTAGE WAVEFORMS
SETUP AND HOLD TIMES
t
t
PZL
t
PLZ
Output
Waveform 1
S1 at 6 V
3 V
2.7 V
0 V
1.5 V
Input
1.5 V
1.5 V
V
V
+ 0.3 V
– 0.3 V
OL
V
OL
(see Note B)
t
PHZ
t
PLH
t
PHL
PZH
Output
Waveform 2
S1 at GND
V
OH
V
OH
OH
1.5 V
Output
1.5 V
1.5 V
(see Note B)
0 V
V
OL
VOLTAGE WAVEFORMS
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
ENABLE AND DISABLE TIMES
NOTES: A.
C
L
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 ≤ 10 MHz, Z = 50 Ω, t ≤ 2.5 ns, t ≤ 2.5 ns.
O
r
f
D. The outputs are measured one at a time with one transition per measurement.
E.
F.
G.
t
t
t
and t
and t
and t
are the same as t
.
dis
PLZ
PZL
PLH
PHZ
PZH
PHL
are the same as t
.
en
are the same as t .
pd
Figure 3. Load Circuit and Voltage Waveforms
7
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
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Copyright 1998, Texas Instruments Incorporated
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