SN74LVC241APWLE [TI]
LVC/LCX/Z SERIES, DUAL 4-BIT DRIVER, TRUE OUTPUT, PDSO20, tssop-20;
| 型号： | SN74LVC241APWLE |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | LVC/LCX/Z SERIES, DUAL 4-BIT DRIVER, TRUE OUTPUT, PDSO20, tssop-20 驱动 光电二极管 输出元件 逻辑集成电路 |
| 文件： | 总8页 (文件大小：125K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SN74LVC241A
OCTAL BUFFER/DRIVER
WITH 3-STATE OUTPUTS
SCAS343E – MARCH 1994 – REVISED JUNE 1998
DB, DW, OR PW PACKAGE
(TOP VIEW)
EPIC (Enhanced-Performance Implanted
CMOS) Submicron Process
Typical V
< 0.8 V at V
(Output Ground Bounce)
OLP
1OE
1A1
2Y4
1A2
2Y3
1A3
2Y2
1A4
2Y1
V
CC
1
2
3
4
5
6
7
8
9
20
19
18
17
16
15
14
= 3.3 V, T = 25°C
CC
A
2OE
1Y1
2A4
1Y2
2A3
1Y3
Typical V
> 2 V at V
(Output V
Undershoot)
OHV
OH
= 3.3 V, T = 25°C
CC
A
Power Off Disables Outputs, Permitting
Live Insertion
Supports Mixed-Mode Signal Operation on
All Ports (5-V Input/Output Voltage With
13 2A2
12 1Y4
11 2A1
3.3-V V
)
CC
GND 10
Package Options Include Plastic
Small-Outline (DW), Shrink Small-Outline
(DB), and Thin Shrink Small-Outline (PW)
Packages
description
This octal buffer/line driver is designed for 1.65-V to 3.6-V V
operation.
CC
The SN74LVC241A is designed specifically to improve both the performance and density of 3-state
memory-address drivers, clock drivers, and bus-oriented receivers and transmitters. Together with the
’LVC240A and ’LVC244A, these devices provide the choice of selected combinations of inverting and
noninverting outputs, symmetrical OE (active-low output-enable) inputs, and complementary OE and
OE inputs.
The SN74LVC241A is organized as two 4-bit line drivers with separate output-enable (1OE, 2OE) inputs. When
1OE is low or 2OE is high, the device passes data from the A inputs to the Y outputs. When 1OE is high or 2OE
is low, the outputs are in the high-impedance state.
To ensure the high-impedance state during power up or power down, OE should be tied to V through a pullup
CC
resistor and OE should be tied to GND through a pulldown resistor; the minimum value of the resistor is
determined by the current-sinking or the current-sourcing capability of the driver.
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 SN74LVC241A is characterized for operation from –40°C to 85°C.
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
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.
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN74LVC241A
OCTAL BUFFER/DRIVER
WITH 3-STATE OUTPUTS
SCAS343E – MARCH 1994 – REVISED JUNE 1998
FUNCTION TABLES
INPUTS
OUTPUT
1Y
1OE
1A
H
L
L
H
L
L
H
X
Z
INPUTS
OUTPUT
2Y
2OE
H
2A
H
H
L
H
L
L
X
Z
†
logic symbol
19
1
1OE
EN
2OE
EN
11
13
15
17
9
7
5
3
2
18
16
14
12
2A1
2A2
2A3
2A4
2Y1
2Y2
2Y3
2Y4
1A1
4
1Y1
1Y2
1Y3
1Y4
1A2
6
1A3
8
1A4
†
This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
logic diagram (positive logic)
1
19
11
1OE
2OE
2A1
2
18
16
14
12
9
7
5
3
1A1
1Y1
1Y2
1Y3
1Y4
2Y1
2Y2
2Y3
2Y4
4
13
15
17
1A2
2A2
2A3
2A4
6
1A3
8
1A4
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN74LVC241A
OCTAL BUFFER/DRIVER
WITH 3-STATE OUTPUTS
SCAS343E – MARCH 1994 – REVISED JUNE 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
Voltage range applied to any output in the high-impedance or power-off state, V
O
(see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 6.5 V
Voltage range applied to any output in the high or low state, V
O
(see Notes 1 and 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to V
+ 0.5 V
CC
Input clamp current, I (V < 0 ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –50 mA
(V < 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –50 mA
Continuous output current, I . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±50 mA
or GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±100 mA
Package thermal impedance, θ (see Note 3): DB package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115°C/W
IK
I
Output clamp current, I
OK
O
O
Continuous current through V
CC
JA
DW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97°C/W
PW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128°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
0
5.5
V
V
I
High or low state
3 state
V
CC
5.5
Output voltage
O
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
–4
–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
–40
85
°C
A
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
SN74LVC241A
OCTAL BUFFER/DRIVER
WITH 3-STATE OUTPUTS
SCAS343E – MARCH 1994 – REVISED JUNE 1998
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
†
TYP
PARAMETER
TEST CONDITIONS
MIN
V –0.2
CC
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
OH
OH
OH
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
I
V = 0 to 5.5 V
3.6 V
µA
µA
µA
I
I
V or V = 5.5 V
0
±10
±10
10
off
I
O
V
= 0 to 5.5 V
3.6 V
O
OZ
V = V
or GND
I
CC
I
I
= 0
3.6 V
µA
µA
CC
O
‡
3.6 V ≤ V ≤ 5.5 V
10
I
One input at V
CC
Other inputs at V
– 0.6 V,
∆I
CC
2.7 V to 3.6 V
500
or GND
CC
or GND
C
C
V = V
3.3 V
3.3 V
pF
pF
i
I
CC
= V
V
or GND
o
O
CC
= 3.3 V, T = 25°C.
†
‡
All typical values are at V
CC
This applies in the disabled state only.
A
switching characteristics over recommended operating free-air temperature range (unless
otherwise noted) (see Figures 1 through 3)
V
= 1.8 V
V
= 2.5 V
V
= 3.3 V
CC
± 0.15 V
CC
± 0.2 V
CC
± 0.3 V
V
= 2.7 V
MAX
FROM
(INPUT)
TO
(OUTPUT)
CC
PARAMETER
UNIT
MIN MAX
MIN
MAX
MIN
MIN
MAX
t
t
t
A
Y
Y
Y
ns
ns
ns
pd
en
dis
OE or OE
OE or OE
operating characteristics, T = 25°C
A
V
= 1.8 V
± 0.15 V
V
= 2.5 V
± 0.2 V
V = 3.3 V
CC
CC
CC
TEST
CONDITIONS
± 0.3 V
PARAMETER
UNIT
TYP
TYP
TYP
Outputs enabled
Outputs disabled
Power dissipation capacitance
per buffer/driver
C
f = 10 MHz
pF
pd
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN74LVC241A
OCTAL BUFFER/DRIVER
WITH 3-STATE OUTPUTS
SCAS343E – MARCH 1994 – REVISED JUNE 1998
PARAMETER MEASUREMENT INFORMATION
= 1.8 V ± 0.15 V
V
CC
2 × V
CC
Open
S1
1k Ω
From Output
Under Test
TEST
S1
GND
t
Open
pd
/t
C
= 30 pF
t
2 × V
CC
Open
L
PLZ PZL
1k 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 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
SN74LVC241A
OCTAL BUFFER/DRIVER
WITH 3-STATE OUTPUTS
SCAS343E – MARCH 1994 – REVISED JUNE 1998
PARAMETER MEASUREMENT INFORMATION
= 2.5 V ± 0.2 V
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
SN74LVC241A
OCTAL BUFFER/DRIVER
WITH 3-STATE OUTPUTS
SCAS343E – MARCH 1994 – REVISED JUNE 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
3 V
Output
Waveform 1
S1 at 6 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
OH
(see Note B)
t
PHZ
t
PLH
t
PHL
PZH
Output
Waveform 2
S1 at GND
V
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
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 3. Load Circuit and Voltage Waveforms
7
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
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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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DEATH, PERSONAL INJURY, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE (“CRITICAL
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Copyright 1998, Texas Instruments Incorporated
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