SNJ54ALS241BJ [ROCHESTER]
ALS SERIES, DUAL 4-BIT DRIVER, TRUE OUTPUT, CDIP20, 0.300 INCH, CERAMIC, DIP-20;
| 型号： | SNJ54ALS241BJ |
| 厂家： | 
Rochester Electronics |
| 描述： | ALS SERIES, DUAL 4-BIT DRIVER, TRUE OUTPUT, CDIP20, 0.300 INCH, CERAMIC, DIP-20 驱动 CD 输出元件 逻辑集成电路 |
| 文件： | 总9页 (文件大小：800K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SN54ALS241B, SN54AS241, SN74ALS241C, SN74AS241
OCTAL BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SDAS153C – DECEMBER 1982 – REVISED AUGUST 1994
SN54ALS241B, SN54AS241 . . . J PACKAGE
SN74ALS241C, SN74AS241 . . . 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 and line drivers are designed
specifically to improve both 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 OE (active-low
output control) inputs, and complementary OE
andOE inputs. These devices feature high fan-out
and improved fan-in.
13 2A2
12 1Y4
11
2A1
SN54ALS241B, SN54AS241 . . . FK PACKAGE
(TOP VIEW)
3
2
1
20 19
18
The –1 version of the SN74ALS′ parts are
identical to their standard versions except the
1Y1
17 2A4
1A2
2Y3
1A3
2Y2
1A4
4
5
6
7
8
recommended maximum I
is increased to
16
15
14
1Y2
2A3
1Y3
OL
48 mA. There are no –1 versions of the
SN54ALS241B.
9 10 11 12 13
The SN54ALS241B and SN54AS241 are
characterized for operation over the full
military temperature range of –55°C to 125°C.
The SN74ALS241C and SN74AS241 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 1994, 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
SN54ALS241B, SN54AS241, SN74ALS241C, SN74AS241
OCTAL BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SDAS153C – DECEMBER 1982 – REVISED AUGUST 1994
†
logic symbol
logic diagram (positive logic)
1
1
1OE
EN
1OE
2
4
18
16
2
18
16
14
12
1A1
1A2
1Y1
1Y2
1A1
4
1Y1
1Y2
1Y3
1Y4
1A2
6
1A3
8
1A4
6
8
14
12
1A3
1A4
1Y3
1Y4
19
2OE
EN
11
2A1
13
9
7
5
3
2Y1
2Y2
2Y3
2Y4
2A2
15
19
11
2A3
17
2OE
2A1
2A2
2A3
2A4
2A4
9
2Y1
2Y2
2Y3
2Y4
†
This symbol is in accordance with ANSI/IEEE Std 91-1984
and IEC Publication 617-12.
13
15
7
5
17
3
‡
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 : SN54ALS241B, SN54AS241 . . . . . . . . . . . . . . . –55°C to 125°C
A
SN74ALS241C, SN74AS241 . . . . . . . . . . . . . . . . . . . 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
SN54ALS241B, SN54AS241, SN74ALS241C, SN74AS241
OCTAL BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SDAS153C – DECEMBER 1982 – REVISED AUGUST 1994
recommended operating conditions
SN54ALS241B
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
†
The 48-mA limit applies only to the –1 version and only if the V
is maintained between 4.75 V and 5.25 V.
CC
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
SN54ALS241B
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
CC
= 4.5 V
= –12 mA
= –15 mA
= 12 mA
2
2
0.25
0.4
0.25
0.35
0.4
0.5
V
CC
= 4.5 V
V
OL
= 24 mA
V
V
CC
V
CC
V
CC
V
CC
V
CC
V
CC
V
CC
= 4.75 V
= 5.5 V,
= 5.5 V,
= 5.5 V,
= 5.5 V,
= 5.5 V,
= 5.5 V,
= 48 mA (–1 version)
= 2.7 V
I
I
I
I
I
I
V
V
20
–20
0.1
20
–20
0.1
µA
µA
OZH
OZL
I
O
O
= 0.4 V
V = 7 V
I
mA
µA
V = 2.7 V
I
20
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
SN54ALS241B, SN54AS241, SN74ALS241C, SN74AS241
OCTAL BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SDAS153C – DECEMBER 1982 – REVISED AUGUST 1994
switching characteristics (see Figure 1)
V
= 4.5 V to 5.5 V,
= 50 pF,
= 500 Ω,
CC
C
R
R
L
1
2
FROM
(INPUT)
TO
(OUTPUT)
= 500 Ω,
= MIN to MAX
PARAMETER
UNIT
†
T
A
SN54ALS241B SN74ALS241C
MIN MAX MIN MAX
t
t
t
t
t
t
t
t
t
t
3
1
3
3
2
2
3
3
2
3
31
17
33
27
17
32
38
30
17
35
2
3
3
4
1
2
4
5
2
3
11
10
21
21
10
15
21
21
10
15
PLH
PHL
PZH
PZL
PHZ
PLZ
PZH
PZL
PHZ
PLZ
A
Y
Y
Y
Y
Y
ns
ns
ns
ns
ns
1OE
1OE
2OE
2OE
†
For conditions shown MIN or MAX, use the appropriate value specified under recommended operating conditions.
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN54ALS241B, SN54AS241, SN74ALS241C, SN74AS241
OCTAL BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SDAS153C – DECEMBER 1982 – REVISED AUGUST 1994
recommended operating conditions
SN54AS241
MIN NOM
SN74AS241
MIN NOM
UNIT
MAX
MAX
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
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
SN54AS241
SN74AS241
PARAMETER
TEST CONDITIONS
I = –18 mA
UNIT
†
†
MIN TYP
MAX
MIN TYP
MAX
V
IK
V
V
= 4.5 V,
–1.2
–1.2
V
CC
I
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
OH
OH
OH
OH
OL
OL
CC
2.4
CC
2.4
= 4.5 V to 5.5 V
CC
3.4
3.4
V
OH
V
2.4
V
CC
= 4.5 V
2.4
V
CC
V
CC
V
CC
V
CC
V
CC
V
CC
V
CC
V
CC
= 4.5 V,
= 4.75 V,
= 5.5 V,
= 5.5 V,
= 5.5 V,
= 5.5 V,
= 5.5 V,
= 5.5 V,
0.27
0.55
V
OL
V
0.31
0.55
50
I
I
I
I
I
I
V
V
50
–50
0.1
20
µA
µA
OZH
OZL
I
O
O
= 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
5
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN54ALS241B, SN54AS241, SN74ALS241C, SN74AS241
OCTAL BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SDAS153C – DECEMBER 1982 – REVISED AUGUST 1994
switching characteristics (see Figure 1)
V
= 4.5 V to 5.5 V,
= 50 pF,
= 500 Ω,
CC
C
R
R
L
1
2
FROM
(INPUT)
TO
(OUTPUT)
= 500 Ω,
= MIN to MAX
PARAMETER
UNIT
†
T
A
SN54AS241
SN74AS241
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
Y
Y
Y
Y
Y
ns
ns
ns
ns
ns
2
7
2
2
10
8
2
1OE
1OE
2OE
2OE
2
2
7.5
6
2
6.5
10.5
11
9.5
7
2
2
2
9
2
3
10.5
8.5
7
3
3
3
3
3
12
3
12
†
For conditions shown MIN or MAX, use the appropriate value specified under recommended operating conditions.
6
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN54ALS241B, SN54AS241, SN74ALS241C, SN74AS241
OCTAL BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SDAS153C – DECEMBER 1982 – REVISED AUGUST 1994
PARAMETER MEASUREMENT INFORMATION
7 V
SWITCH POSITION TABLE
TEST
S1
Open
t
Open
Open
Open
Closed
Open
Closed
S1
PLH
t
t
PHL
PZH
R1 = 500 Ω
From Output
Under Test
t
PZL
Test Point
R2 = 500 Ω
t
PHZ
C
= 50 pF
L
t
PLZ
(see Note A)
LOAD CIRCUIT FOR 3-STATE OUTPUTS
3.5 V
0.3 V
1.3 V
1.3 V
High-Level
Pulse
1.3 V
t
w
3.5 V
Timing
Input
3.5 V
0.3 V
1.3 V
Low-Level
Pulse
1.3 V
0.3 V
3.5 V
0.3 V
t
h
t
su
VOLTAGE WAVEFORMS
PULSE DURATION
Data
Input
1.3 V
1.3 V
VOLTAGE WAVEFORMS
SETUP AND HOLD TIMES
3.5 V
Output
Control
1.3 V
1.3 V
0.3 V
3.5 V
3.5 V
Input
(see Note B)
t
PZL
1.3 V
1.3 V
t
PLZ
0.3 V
PHL
t
t
PLH
Waveform 1
S1 Closed
(see Note C)
1.3 V
V
OH
In-Phase
Output
1.3 V
1.3 V
1.3 V
V
OL
V
OL
0.3 V
t
PHZ
t
t
PLH
PZH
t
V
OH
PHL
V
Waveform 2
S1 Open
(see Note C)
OH
OL
Out-of-Phase
Output
1.3 V
1.3 V
0.3 V
0 V
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. All input pulses are supplied by generators having the following characteristics: PRR ≤ 1 MHz, Z = 50 Ω, t ≤ 2 ns, t ≤ 2 ns.
o
r
f
C. 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.
D. The outputs are measured one at a time with one transition per measurement.
Figure 1. Load Circuit and Voltage Waveforms
7
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
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BE FULLY AT THE CUSTOMER’S RISK.
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safeguards must be provided by the customer to minimize inherent or procedural hazards.
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Copyright 1998, Texas Instruments Incorporated
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