SN54AC241_16 [TI]
OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS;
| 型号： | SN54AC241_16 |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS 驱动 输出元件 |
| 文件： | 总6页 (文件大小：113K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SN54AC241, SN74AC241
OCTAL BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SCAS513C – JUNE 1995 – REVISED SEPTEMBER 1996
SN54AC241 . . . J OR W PACKAGE
SN74AC241 . . . DB, DW, N, OR PW PACKAGE
(TOP VIEW)
EPIC (Enhanced-Performance Implanted
CMOS) 1-µm Process
Package Options Include Plastic
Small-Outline (DW), Shrink Small-Outline
(DB), and Thin Shrink Small-Outline (PW)
Packages, Ceramic Chip Carriers (FK), Flat
(W), and DIP (J, N) Packages
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 and line drivers are designed
specifically to improve the performance and
density of 3-state memory address drivers, clock
drivers, and bus-oriented receivers and
transmitters.
13 2A2
12
11
1Y4
2A1
The ’AC241 are organized as two 4-bit
buffers/drivers with separate complementary
output-enable (1OE and 2OE) inputs. When 1OE
is low or 2OE is high, the device passes
noninverted 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.
SN54AC241 . . . FK PACKAGE
(TOP VIEW)
3
2
1
20 19
18
4
5
6
7
8
1Y1
2A4
1Y2
2A3
1Y3
1A2
2Y3
1A3
2Y2
1A4
17
16
15
14
The SN54AC241 is characterized for operation
over the full military temperature range of –55°C
to 125°C. The SN74AC241 is characterized for
operation from –40°C to 85°C.
9 10 11 12 13
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
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 1996, Texas Instruments Incorporated
UNLESS OTHERWISE NOTED this document contains PRODUCTION
DATA information 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
SN54AC241, SN74AC241
OCTAL BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SCAS513C – JUNE 1995 – REVISED SEPTEMBER 1996
†
logic symbol
1
19
1OE
EN
2OE
EN
2
4
6
8
18
16
14
12
11
13
15
17
9
7
5
3
1A1
1A2
1A3
1A4
1Y1
1Y2
1Y3
1Y4
2A1
2A2
2A3
2A4
2Y1
2Y2
2Y3
2Y4
†
This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
logic diagram (positive logic)
1
19
1OE
2OE
18
16
9
7
2
11
13
15
17
1Y1
1Y2
2Y1
2Y2
1A1
2A1
2A2
4
1A2
14
12
5
3
6
1Y3
1Y4
2Y3
2Y4
1A3
2A3
2A4
8
1A4
‡
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 7 V
CC
Input voltage range, V (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to V
+ 0.5 V
+ 0.5 V
I
CC
CC
Output voltage range, V (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to V
O
Input clamp current, I (V < 0 or V > V ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20 mA
IK
I
I
CC
Output clamp current, I
(V < 0 or V > V ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20 mA
OK
O O CC
Continuous output current, I (V = 0 to V ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±50 mA
Continuous current through V
Maximum power dissipation at T = 55°C (in still air) (see Note 2): DB package . . . . . . . . . . . . . . . . . . 0.6 W
O
O
CC
CC
or GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±200 mA
A
DW package . . . . . . . . . . . . . . . . . . 1.6 W
N package . . . . . . . . . . . . . . . . . . . . 1.3 W
PW package . . . . . . . . . . . . . . . . . . 0.7 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 and output voltage ratings may be exceeded if the input and output current ratings are observed.
2. The maximum package power dissipation is calculated using a junction temperature of 150°C and a board trace length of 750 mils,
except for the N package, which has a trace length of zero.
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN54AC241, SN74AC241
OCTAL BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SCAS513C – JUNE 1995 – REVISED SEPTEMBER 1996
recommended operating conditions (see Note 3)
SN54AC241
SN74AC241
UNIT
MIN
2
MAX
MIN
2
MAX
V
V
Supply voltage
6
6
V
CC
V
CC
V
CC
V
CC
V
CC
V
CC
V
CC
= 3 V
2.1
2.1
High-level input voltage
= 4.5 V
= 5.5 V
= 3 V
3.15
3.85
3.15
3.85
V
V
IH
0.9
1.35
1.65
0.9
1.35
1.65
V
IL
Low-level input voltage
= 4.5 V
= 5.5 V
V
V
Input voltage
0
0
V
V
0
0
V
V
V
V
I
CC
CC
Output voltage
O
CC
CC
V
CC
V
CC
V
CC
V
CC
V
CC
V
CC
= 3 V
–12
–24
–24
12
–12
–24
–24
12
I
High-level output current
Low-level output current
= 4.5 V
= 5.5 V
= 3 V
mA
mA
OH
OL
I
= 4.5 V
= 5.5 V
24
24
24
24
∆t/∆v
Input transition rise or fall rate
Operating free-air temperature
0
8
0
8
ns/V
T
A
–55
125
–40
85
°C
NOTE 3: Unused inputs must be held high or low to prevent them from floating.
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.
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN54AC241, SN74AC241
OCTAL BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SCAS513C – JUNE 1995 – REVISED SEPTEMBER 1996
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
T
A
= 25°C
SN54AC241
SN74AC241
PARAMETER
TEST CONDITIONS
V
UNIT
CC
MIN
2.9
TYP
MAX
MIN
2.9
4.4
5.4
2.4
3.7
4.7
3.85
MAX
MIN
2.9
MAX
3 V
I
= –50 µA
4.5 V
5.5 V
3 V
4.4
4.4
OH
5.4
5.4
I
I
= –12 mA
= –24 mA
2.56
3.86
4.86
2.46
3.76
4.76
OH
V
OH
V
4.5 V
5.5 V
5.5 V
5.5 V
3 V
OL
†
†
I
I
= –50 mA
= –75 mA
OH
3.85
OH
0.1
0.1
0.1
0.1
0.1
0.1
I
= 50 µA
4.5 V
5.5 V
3 V
OL
0.1
0.1
0.1
I
I
= 12 mA
= 24 mA
0.36
0.36
0.36
0.5
0.44
0.44
0.44
OL
V
OL
V
4.5 V
5.5 V
5.5 V
5.5 V
0.5
OL
0.5
†
†
I
I
= 50 mA
1.65
OL
= 75 mA
1.65
±1
OL
Data inputs
V = V
or GND
or GND
±0.1
±0.1
±1
±1
I
CC
CC
I
5.5 V
5.5 V
µA
µA
I
Control inputs V = V
±1
I
V
V
= V
or GND,
O
CC
= V or V
IH
I
I
±0.25
±5
±2.5
OZ
I(OE)
IL
V = V
or GND,
or GND
I = 0
O
5.5 V
5 V
4
80
40
µA
CC
I
CC
CC
C
V = V
2.5
pF
i
I
†
Not more than one output should be tested at a time, and the duration of the test should not exceed 10 ms.
switching characteristics over recommended operating free-air temperature range,
= 3.3 V ± 0.3 V (unless otherwise noted) (see Figure 1)
V
CC
T = 25°C
A
SN54AC241
SN74AC241
FROM
(INPUT)
TO
(OUTPUT)
PARAMETER
UNIT
ns
MIN
1.5
1.5
1.5
1.5
2
TYP
6
MAX
9
MIN
1
MAX
12
MIN
1.5
1
MAX
10
t
t
t
t
t
t
PLH
PHL
PZH
PZL
PHZ
PLZ
A
Y
Y
Y
6
9
1
11.5
13
10.5
13
6.5
7
12.5
12
1
1
ns
OE or OE
OE or OE
1
13
1.5
2
13
8
12
1
13
12.5
13.5
ns
1.5
7
12.5
1
13
1
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.
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN54AC241, SN74AC241
OCTAL BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SCAS513C – JUNE 1995 – REVISED SEPTEMBER 1996
switching characteristics over recommended operating free-air temperature range,
V
= 5 V ± 0.5 V (unless otherwise noted) (see Figure 1)
CC
T
A
= 25°C
TYP
5
SN54AC241
SN74AC241
FROM
(INPUT)
TO
(OUTPUT)
PARAMETER
UNIT
ns
MIN
1.5
1.5
1.5
1.5
1.5
1.5
MAX
7
MIN
1
MAX
9.5
9
MIN
1
MAX
7.5
t
t
t
t
t
t
PLH
PHL
PZH
PZL
PHZ
PLZ
A
Y
Y
Y
4.5
5.5
5.5
6.5
6
7
1
1
7.5
9
1
10
1
9.5
ns
OE or OE
OE or OE
9
1
10
1
9.5
10
10
1
11.5
11.5
1
10.5
10.5
ns
1
1
operating characteristics, V
= 5 V, T = 25°C
A
CC
PARAMETER
TEST CONDITIONS
TYP
UNIT
C
Power dissipation capacitance per buffer/driver
C
= 50 pF,
L
f = 1 MHz
45
pF
pd
PARAMETER MEASUREMENT INFORMATION
2 × V
CC
Open
TEST
/t
S1
S1
500 Ω
t
t
t
Open
2 × V
CC
Open
PLH PHL
From Output
Under Test
/t
PLZ PZL
/t
PHZ PZH
C
= 50 pF
L
500 Ω
(see Note A)
Output
Control
(low-level
enabling)
V
LOAD CIRCUIT
CC
50% V
50% V
CC
CC
0 V
t
PZL
V
t
PLZ
CC
Output
Waveform 1
V
CC
Input
50% V
50% V
CC
CC
50% V
CC
0 V
V
V
+ 0.3 V
– 0.3 V
S1 at 2 × V
(see Note B)
OL
CC
V
V
OL
t
PLH
t
t
PHZ
PHL
t
PZH
Output
Waveform 2
S1 at Open
(see Note B)
V
OH
OH
0 V
OH
50% V
50% V
Output
50% V
CC
CC
CC
V
OL
VOLTAGE WAVEFORMS
VOLTAGE WAVEFORMS
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. All input pulses are supplied by generators having the following characteristics: PRR ≤ 1 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 input transition per measurement.
Figure 1. Load Circuit and Voltage Waveforms
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.
5
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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