概述
数据手册74F38 概述
Quad Two-Input NAND Buffer (Open Collector) 四路双输入与非缓冲器（集电极开路）
74F38 数据手册
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PDF下载April 1988
Revised November 1999
74F38
Quad Two-Input NAND Buffer (Open Collector)
General Description
This device contains four independent gates, each of which
performs the logic NAND function. The open-collector out-
puts require external pull-up resistors for proper logical
operation.
Ordering Code:
Order Number Package Number
Package Description
74F38SC
74F38SJ
74F38PC
M14A
M14D
N14A
14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150 Narrow
14-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Logic Symbol
Connection Diagram
IEEE/IEC
Unit Loading/Fan Out
U.L.
Input IIH/IIL
Pin Names
Description
HIGH/LOW
Output IOH/IOL
An, Bn
Inputs
1.0/2.0
20 µA/−1.2 mA
On
Outputs
OC (Note 1) /106.6
OC (Note 1) /64 mA
Note 1: OC = Open Collector
Function Table
Inputs
Output
A
L
B
L
O
H
H
H
L
L
H
L
H
H
H
H = HIGH Voltage Level
L = LOW Voltage Level
© 1999 Fairchild Semiconductor Corporation
DS009465
www.fairchildsemi.com
Absolute Maximum Ratings(Note 2)
Recommended Operating
Conditions
Storage Temperature
−65°C to +150°C
Ambient Temperature under Bias
Junction Temperature under Bias
−55°C to +125°C
−55°C to +150°C
−0.5V to +7.0V
Free Air Ambient Temperature
Supply Voltage
0°C to +70°C
+4.5V to +5.5V
V
CCPin Potential to Ground Pin
Input Voltage (Note 3)
Input Current (Note 3)
Voltage Applied to Output
in HIGH State (with VCC = 0V)
Standard Output
−0.5V to +7.0V
−30 mA to +5.0 mA
Note 2: Absolute maximum ratings are values beyond which the device
may be damaged or have its useful life impaired. Functional operation
under these conditions is not implied.
−0.5V to VCC
3-STATE Output
−0.5V to +5.5V
Note 3: Either voltage limit or current limit is sufficient to protect inputs.
Current Applied to Output
in LOW State (Max)
twice the rated IOL (mA)
DC Electrical Characteristics
VCC
Symbol
VIH
Parameter
Input HIGH Voltage
Min
Typ
Max
Units
Conditions
2.0
V
V
V
Recognized as a HIGH Signal
Recognized as a LOW Signal
VIL
Input LOW Voltage
Input Clamp Diode Voltage
Output LOW
0.8
VCD
VOL
−1.2
Min
Min
I
IN = −18 mA
10% VCC
0.55
5.0
V
µA
µA
V
I
OL = 64 mA
Voltage
IIH
Input HIGH
Max
Max
0.0
V
IN = 2.7V
IN = 7.0V
Current
IBVI
VID
IOD
Input HIGH Current
Breakdown Test
Input Leakage
7.0
V
I
ID = 1.9 µA
All Other Pins Grounded
IOD = 150 mV
All Other Pins Grounded
4.75
Test
Output Leakage
Circuit Current
V
3.75
−1.2
250
µA
mA
µA
0.0
Max
Min
IIL
Input LOW Current
Open Collector, Output
OFF Leakage Test
Power Supply Current
Power Supply Current
V
IN = 0.5V
IOHC
V
OUT = VCC
ICCH
ICCL
2.1
7.0
mA
mA
Max
Max
V
O = HIGH
O = LOW
26.0
30.0
V
AC Electrical Characteristics
T
A = +25°C
T
A = 0°C to +70°C
CC = +5.0V
L = 50 pF
Max
V
CC = +5.0V
V
Symbol
Parameter
Units
C
L = 50 pF
C
Min
6.5
1.5
Typ
9.7
2.1
Max
Min
6.5
1.5
tPLH
tPHL
Propagation Delay
An, Bn to On
12.5
5.0
13.0
5.5
ns
www.fairchildsemi.com
2
Physical Dimensions inches (millimeters) unless otherwise noted
14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150 Narrow
Package Number M14A
3
www.fairchildsemi.com
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
14-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
Package Number M14D
www.fairchildsemi.com
4
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
Package Number N14A
Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and
Fairchild reserves the right at any time without notice to change said circuitry and specifications.
LIFE SUPPORT POLICY
FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD
SEMICONDUCTOR CORPORATION. As used herein:
1. Life support devices or systems are devices or systems
which, (a) are intended for surgical implant into the
body, or (b) support or sustain life, and (c) whose failure
to perform when properly used in accordance with
instructions for use provided in the labeling, can be rea-
sonably expected to result in a significant injury to the
user.
2. A critical component in any component of a life support
device or system whose failure to perform can be rea-
sonably expected to cause the failure of the life support
device or system, or to affect its safety or effectiveness.
www.fairchildsemi.com
5
www.fairchildsemi.com
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