SNJ54ALS241CJ [TI]
具有三态输出的军用 8 通道 4.5V 至 5.5V 双极缓冲器 | J | 20 | -55 to 125;
| 型号： | SNJ54ALS241CJ |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | 具有三态输出的军用 8 通道 4.5V 至 5.5V 双极缓冲器 | J | 20 | -55 to 125 驱动 总线驱动器 总线收发器 |
| 文件： | 总7页 (文件大小：112K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SN54ALS241C, SN54AS241A, SN74ALS241C, SN74AS241A
OCTAL BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SDAS153E – DECEMBER 1982 – REVISED AUGUST 1995
SN54ALS241C, SN54AS241A . . . J PACKAGE
SN74ALS241C, SN74AS241A . . . DW OR N PACKAGE
(TOP VIEW)
• 3-State Outputs Drive Bus Lines or Buffer
Memory Address Registers
• pnp Inputs Reduce dc Loading
• Package Options Include Plastic
Small-Outline (DW) Packages, Ceramic
Chip Carriers (FK), and Standard Plastic (N)
and Ceramic (J) 300-mil DIPs
1OE
1A1
2Y4
1A2
2Y3
1A3
2Y2
1A4
2Y1
GND
V
CC
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
2OE
1Y1
2A4
1Y2
2A3
1Y3
description
These octal buffers/drivers are designed
specifically to improve the performance and
density of 3-state memory address drivers, clock
drivers, and bus-oriented receivers and
transmitters. The designer has a choice of
selected combinations of inverting and
noninverting outputs, symmetrical active-low
output-enable (OE) inputs, and complementary
OE and OE inputs. These devices feature high
fan-out and improved fan-in.
13 2A2
12 1Y4
11
2A1
SN54ALS241C, SN54AS241A . . . FK PACKAGE
(TOP VIEW)
3
2
1
20 19
18
1Y1
2A4
1Y2
2A3
1Y3
1A2
2Y3
1A3
2Y2
1A4
4
5
6
7
8
The -1 version of SN74ALS241C is identical to the
standard version, except that the recommended
17
16
15
14
maximum I
no -1 version of the SN54ALS241C.
of the -1 version is 48 mA. There is
OL
9 10 11 12 13
The SN54ALS241C and SN54AS241A are
characterized for operation over the full military
temperature range of –55°C to 125°C. The
SN74ALS241C
and
SN74AS241A
are
characterized for operation from 0°C to 70°C.
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
Copyright 1995, 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
SN54ALS241C, SN54AS241A, SN74ALS241C, SN74AS241A
OCTAL BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SDAS153E – DECEMBER 1982 – REVISED AUGUST 1995
†
logic symbol
logic diagram (positive logic)
1
2
4
1
1OE
1A1
1A2
1A3
1A4
EN
1OE
2
18
16
14
12
18
16
14
12
1Y1
1Y2
1Y3
1A1
4
1Y1
1Y2
1Y3
1Y4
1A2
6
1A3
8
1A4
6
8
19
2OE
EN
1Y4
11
2A1
13
9
7
5
3
2Y1
2Y2
2Y3
2Y4
2A2
15
19
2A3
17
2OE
2A4
11
13
15
17
9
7
2Y1
2Y2
2A1
2A2
†
This symbol is in accordance with ANSI/IEEE Std 91-1984
and IEC Publication 617-12.
5
3
2A3
2A4
2Y3
2Y4
‡
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage, V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
CC
Input voltage, V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
I
Voltage applied to a disabled 3-state output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5 V
Operating free-air temperature range, T : SN54ALS241C . . . . . . . . . . . . . . . . . . . . . . . . . . . –55°C to 125°C
A
SN74ALS241C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C
Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –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.
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN54ALS241C, SN54AS241A, SN74ALS241C, SN74AS241A
OCTAL BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SDAS153E – DECEMBER 1982 – REVISED AUGUST 1995
recommended operating conditions
SN54ALS241C
MIN NOM MAX
SN74ALS241C
MIN NOM MAX
UNIT
V
V
V
Supply voltage
4.5
2
5
5.5
4.5
2
5
5.5
V
V
CC
High-level input voltage
Low-level input voltage
High-level output current
IH
0.7
–12
12
0.8
–15
24
V
IL
I
mA
OH
I
Low-level output current
mA
OL
†
48
70
T
A
Operating free-air temperature
–55
125
0
°C
†
Applies only to the -1 version and only if V
CC
is between 4.75 V and 5.25 V
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
SN54ALS241C
SN74ALS241C
PARAMETER
TEST CONDITIONS
UNIT
‡
‡
MIN TYP
MAX
MIN TYP
MAX
V
V
V
= 4.5 V,
I = –18 mA
–1.2
–1.2
V
IK
CC
I
= 4.5 V to 5.5 V,
I
I
I
I
I
I
I
= –0.4 mA
= –3 mA
V
–2
V
–2
CC
OH
OH
OH
OH
OL
OL
OL
CC
2.4
CC
2.4
3.2
3.2
V
OH
V
V
= 4.5 V
= 4.5 V
= –12 mA
= –15 mA
= 12 mA
2
CC
CC
2
0.25
0.4
0.25
0.35
0.35
0.4
0.5
0.5
20
V
OL
V
= 24 mA
V
= 48 mA (-1 version)
= 2.7 V
I
I
I
I
I
I
V
CC
V
CC
V
CC
V
CC
V
CC
V
CC
= 5.5 V,
= 5.5 V,
= 5.5 V,
= 5.5 V,
= 5.5 V,
= 5.5 V,
V
V
20
–20
0.1
µA
µA
OZH
OZL
I
O
O
= 0.4 V
–20
0.1
20
V = 7 V
I
mA
µA
V = 2.7 V
I
20
IH
V = 0.4 V
I
–0.1
–112
17
–0.1
–112
18
mA
mA
IL
§
V
O
= 2.25 V
–20
–30
O
Outputs high
Outputs low
9
15
17
9
15
17
I
V
CC
= 5.5 V
28
26
mA
CC
Outputs disabled
32
30
‡
§
All typical values are at V
= 5 V, T = 25°C.
A
CC
The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, I
.
OS
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN54ALS241C, SN54AS241A, SN74ALS241C, SN74AS241A
OCTAL BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SDAS153E – DECEMBER 1982 – REVISED AUGUST 1995
switching characteristics (see Figure 1)
V
C
= 4.5 V to 5.5 V,
= 50 pF,
CC
L
R1 = 500 Ω,
R2 = 500 Ω,
T
A
FROM
(INPUT)
TO
(OUTPUT)
PARAMETER
UNIT
†
= MIN to MAX
SN54ALS241C SN74ALS241C
MIN
3
MAX
31
17
33
27
17
32
38
30
17
35
MIN
2
MAX
11
t
t
t
t
t
t
t
t
t
t
PLH
PHL
PZH
PZL
PHZ
PLZ
PZH
PZL
PHZ
PLZ
A
ns
ns
ns
ns
ns
Y
Y
Y
Y
Y
1
3
10
21
21
10
15
21
21
10
15
3
3
1OE
1OE
2OE
2OE
3
4
2
1
2
2
3
4
3
5
2
2
3
3
†
For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
‡
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage, V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
CC
Input voltage, V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
I
Voltage applied to a disabled 3-state output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5 V
Operating free-air temperature range, T : SN54AS241A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55°C to 125°C
A
SN74AS241A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C
Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –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.
recommended operating conditions
SN54AS241A
MIN NOM MAX
SN74AS241A
MIN NOM MAX
UNIT
V
V
V
Supply voltage
4.5
2
5
5.5
4.5
2
5
5.5
V
V
CC
High-level input voltage
Low-level input voltage
High-level output current
Low-level output current
Operating free-air temperature
IH
0.8
–12
48
0.8
–15
64
V
IL
I
I
mA
mA
°C
OH
OL
T
A
–55
125
0
70
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN54ALS241C, SN54AS241A, SN74ALS241C, SN74AS241A
OCTAL BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SDAS153E – DECEMBER 1982 – REVISED AUGUST 1995
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
SN54AS241A
SN74AS241A
PARAMETER
TEST CONDITIONS
UNIT
†
†
MIN TYP
MAX
MIN TYP
MAX
V
V
V
= 4.5 V,
I = –18 mA
–1.2
–1.2
V
IK
CC
I
= 4.5 V to 5.5 V,
I
I
I
I
I
I
= –2 mA
= –3 mA
= –12 mA
= –15 mA
= 48 mA
= 64 mA
= 2.7 V
V
–2
V
–2
CC
OH
OH
OH
OH
OL
OL
CC
2.4
CC
2.4
3.4
3.4
V
OH
V
V
CC
= 4.5 V
2.4
2.4
0.27
0.55
V
OL
V
CC
= 4.5 V
V
0.31
0.55
50
I
I
I
I
I
I
V
CC
V
CC
V
CC
V
CC
V
CC
V
CC
= 5.5 V,
= 5.5 V,
= 5.5 V,
= 5.5 V,
= 5.5 V,
= 5.5 V,
V
50
–50
0.1
20
µA
µA
OZH
OZL
I
O
O
V
= 0.4 V
–50
0.1
20
V = 7 V
I
mA
µA
V = 2.7 V
I
IH
V = 0.4 V
I
–1
–1
mA
mA
IL
‡
V
O
= 2.25 V
–50
–150
35
–50
–150
35
O
Outputs high
Outputs low
22
61
35
22
61
35
I
V
CC
= 5.5 V
90
90
mA
CC
Outputs disabled
56
56
†
‡
All typical values are at V
= 5 V, T = 25°C.
A
CC
The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, I
.
OS
switching characteristics (see Figure 1)
V
C
= 4.5 V to 5.5 V,
= 50 pF,
CC
L
R1 = 500 Ω,
R2 = 500 Ω,
T
A
FROM
TO
(OUTPUT)
PARAMETER
(INPUT)
UNIT
§
= MIN to MAX
SN54AS241A SN74AS241A
MIN
2
MAX
9
MIN
2
MAX
6.2
6.2
9
t
t
t
t
t
t
t
t
t
t
PLH
PHL
PZH
PZL
PHZ
PLZ
PZH
PZL
PHZ
PLZ
A
ns
ns
ns
ns
ns
Y
Y
Y
Y
Y
1
7
1
1
10
8
1
1OE
1OE
2OE
2OE
2
2
7.5
6
1
6.5
10.5
11
9.5
7
1
1
1
9
2
2
10.5
8.5
7
3
3
1
1
2
12
2
12
§
For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
5
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN54ALS241C, SN54AS241A, SN74ALS241C, SN74AS241A
OCTAL BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SDAS153E – DECEMBER 1982 – REVISED AUGUST 1995
PARAMETER MEASUREMENT INFORMATION
SERIES 54ALS/74ALS AND 54AS/74AS DEVICES
7 V
R
= R1 = R2
V
CC
L
S1
R1
R
L
Test
Point
From Output
Under Test
From Output
Under Test
Test
Point
Test
Point
From Output
Under Test
C
C
L
R
L
R2
L
C
L
(see Note A)
(see Note A)
(see Note A)
LOAD CIRCUIT FOR
BI-STATE
TOTEM-POLE OUTPUTS
LOAD CIRCUIT
FOR OPEN-COLLECTOR OUTPUTS
LOAD CIRCUIT
FOR 3-STATE OUTPUTS
3.5 V
3.5 V
Timing
Input
High-Level
1.3 V
1.3 V
1.3 V
Pulse
0.3 V
0.3 V
t
h
t
w
t
su
3.5 V
3.5 V
0.3 V
Data
Input
Low-Level
1.3 V
1.3 V
1.3 V
1.3 V
Pulse
0.3 V
VOLTAGE WAVEFORMS
SETUP AND HOLD TIMES
VOLTAGE WAVEFORMS
PULSE DURATIONS
3.5 V
0.3 V
Output
Control
(low-level
enabling)
1.3 V
1.3 V
3.5 V
t
PZL
Input
1.3 V
1.3 V
t
PLZ
0.3 V
PHL
3.5 V
t
Waveform 1
S1 Closed
(see Note B)
t
PLH
1.3 V
V
OH
In-Phase
Output
1.3 V
1.3 V
1.3 V
V
OL
0.3 V
V
OL
t
PHZ
t
PLH
t
PZH
t
PHL
V
OH
V
Waveform 2
S1 Open
(see Note B)
OH
OL
Out-of-Phase
Output
(see Note C)
1.3 V
1.3 V
0.3 V
V
0 V
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES, 3-STATE OUTPUTS
NOTES: A.
C includes probe and jig capacitance.
L
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. When measuring propagation delay items of 3-state outputs, switch S1 is open.
D. All input pulses have the following characteristics: PRR ≤ 1 MHz, t = t = 2 ns, duty cycle = 50%.
r
f
E. The outputs are measured one at a time with one transition per measurement.
Figure 1. Load Circuits and Voltage Waveforms
6
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
IMPORTANT NOTICE
Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue
any product or service without notice, and advise customers to obtain the latest version of relevant information
to verify, before placing orders, that information being relied on is current and complete. All products are sold
subject to the terms and conditions of sale supplied at the time of order acknowledgement, including those
pertaining to warranty, patent infringement, and limitation of liability.
TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in
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.
CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF
DEATH, PERSONAL INJURY, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE (“CRITICAL
APPLICATIONS”). TI SEMICONDUCTOR PRODUCTS ARE NOT DESIGNED, AUTHORIZED, OR
WARRANTED TO BE SUITABLE FOR USE IN LIFE-SUPPORT DEVICES OR SYSTEMS OR OTHER
CRITICAL APPLICATIONS. INCLUSION OF TI PRODUCTS IN SUCH APPLICATIONS IS UNDERSTOOD TO
BE FULLY AT THE CUSTOMER’S RISK.
In order to minimize risks associated with the customer’s applications, adequate design and operating
safeguards must be provided by the customer to minimize inherent or procedural hazards.
TI assumes no liability for applications assistance or customer product design. TI does not warrant or represent
that any license, either express or implied, is granted under any patent right, copyright, mask work right, or other
intellectual property right of TI covering or relating to any combination, machine, or process in which such
semiconductor products or services might be or are used. TI’s publication of information regarding any third
party’s products or services does not constitute TI’s approval, warranty or endorsement thereof.
Copyright 1998, Texas Instruments Incorporated
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