SN74F38 [TI]
QUADRUPLE 2-INPUT POSITIVE-NAND BUFFERS WITH OPEN-COLLECTOR OUTPUTS; 与集电极开路输出四路2输入正与非缓冲区
| 型号： | SN74F38 |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | QUADRUPLE 2-INPUT POSITIVE-NAND BUFFERS WITH OPEN-COLLECTOR OUTPUTS |
| 文件： | 总5页 (文件大小：71K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SN54F38, SN74F38
QUADRUPLE 2-INPUT POSITIVE-NAND BUFFERS
WITH OPEN-COLLECTOR OUTPUTS
SDFS013A – MARCH 1987 – REVISED OCTOBER 1993
SN54F38 . . . J PACKAGE
SN74F38 . . . D OR N PACKAGE
(TOP VIEW)
• Package Options Include Plastic
Small-Outline Packages, Ceramic Chip
Carriers, and Standard Plastic and Ceramic
300-mil DIPs
1A
1B
V
CC
1
2
3
4
5
6
7
14
13
12
11
10
9
4B
4A
4Y
3B
3A
3Y
description
1Y
2A
These devices contain four independent 2-input
NAND buffer gates with open-collector outputs.
They perform the Boolean functions Y = A • B or
Y = A + B in positive logic.
2B
2Y
GND
8
The open-collector outputs require pullup
resistors to perform correctly. They may be
connected to other open-collector outputs to
implement active-low wired-OR or active-high
wired-AND functions. Open-collector devices are
SN54F38 . . . FK PACKAGE
(TOP VIEW)
often used to generate higher V
levels.
OH
3
2
1
20 19
18
1Y
NC
2A
4A
NC
4Y
NC
3B
4
5
6
7
8
The SN54F38 is characterized for operation over
the full military temperature range of –55°C to
125°C. The SN74F38 is characterized for
operation from 0°C to 70°C.
17
16
15
14
NC
2B
9 10 11 12 13
FUNCTION TABLE
(each gate)
INPUTS
OUTPUT
Y
A
B
H
X
L
NC – No internal connection
H
L
L
H
H
X
†
logic symbol
logic diagram (positive logic)
1
1A
2
1
&
3
6
1A
2
3
6
8
1Y
2Y
3Y
4Y
1Y
2Y
3Y
4Y
1B
4
1B
4
2A
5
2A
5
2B
9
2B
9
3A
3A
10
3B
12
4A
13
4B
8
10
3B
11
12
4A
11
13
4B
†
This symbol is in accordance with ANSI/IEEE Std 91-1984 and
IEC Publication 617-12.
Pin numbers shown are for the D, J, and N packages.
Copyright 1993, 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.
2–1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN54F38, SN74F38
QUADRUPLE 2-INPUT POSITIVE-NAND BUFFERS
WITH OPEN-COLLECTOR OUTPUTS
SDFS013A – MARCH 1987 – REVISED OCTOBER 1993
†
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 7 V
I
Input current range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –30 mA to 5 mA
Voltage range applied to any output in the high state . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to V
CC
Current into any output in the low state . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128 mA
Operating free-air temperature range: SN54F38 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55°C to 125°C
SN74F38 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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.
NOTE 1: The input voltage ratings may be exceeded provided the input current ratings are observed.
recommended operating conditions
SN54F38
SN74F38
UNIT
MIN NOM
MAX
MIN NOM
MAX
V
V
V
Supply voltage
4.5
2
5
5.5
4.5
2
5
5.5
V
V
CC
IH
IL
High-level input voltage
Low-level input voltage
Input clamp current
0.8
–18
4.5
0.8
–18
4.5
64
V
I
IK
mA
V
V
OH
High-level output voltage
Low-level output current
Operating free-air temperature
I
48
mA
°C
OL
T
A
–55
125
0
70
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
SN54F38
SN74F38
PARAMETER
TEST CONDITIONS
UNIT
V
‡
‡
MIN TYP
MAX
–1.2
0.5
0.5
0.1
20
MIN TYP
MAX
–1.2
0.5
0.5
0.1
20
V
V
V
CC
V
CC
V
CC
V
CC
V
CC
V
CC
V
CC
V
CC
V
CC
= 4.5 V,
= 4.5 V,
= 4.5 V,
= 5.5 V,
= 5.5 V,
= 5.5 V,
= 4.5 V
= 5.5 V,
= 5.5 V,
I = –18 mA
I
–0.73
0.3
IK
I
= 48 mA
= 64 mA
0.3
0.3
OL
OL
V
OL
I
0.3
I
I
I
I
I
I
V = 7 V
I
mA
µA
I
V = 2.7 V
I
IH
V = 0.5 V
I
– 0.6
250
7
– 0.6
250
7
mA
µA
IL
OH
CCH
CCL
V = 0
I
4
4
mA
mA
V = 4.5 V
I
22
30
22
30
‡
All typical values are at V
= 5 V, T = 25°C.
A
CC
2–2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN54F38, SN74F38
QUADRUPLE 2-INPUT POSITIVE-NAND BUFFERS
WITH OPEN-COLLECTOR OUTPUTS
SDFS013A – MARCH 1987 – REVISED OCTOBER 1993
switching characteristics (see Note 2)
V
C
R
= 5 V,
= 50 pF,
= 500 Ω,
= 25°C
V
C
R
= 4.5 V to 5.5 V,
= 50 pF,
CC
L
L
CC
L
L
= 500Ω,
FROM
(INPUT)
TO
(OUTPUT)
†
PARAMETER
UNIT
T
A
T
A
= MIN to MAX
′F38
TYP
9.6
SN54F38
SN74F38
MIN
6.7
1
MAX
12.5
5
MIN
6.2
1
MAX
MIN
6.7
1
MAX
t
t
14
13
PLH
A or B
Y
ns
2.6
6.5
5.5
PHL
†
For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
NOTE 2: Load circuits and waveforms are shown in Section 1.
2–3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
2–4
IMPORTANT NOTICE
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pertaining to warranty, patent infringement, and limitation of liability.
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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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