DM7426 [FAIRCHILD]
Quad 2-Input NAND Gates with High Voltage Open-Collector Outputs; 四2输入与非门与高压集电极开路输出
| 型号： | DM7426 |
| 厂家： | 
FAIRCHILD SEMICONDUCTOR |
| 描述： | Quad 2-Input NAND Gates with High Voltage Open-Collector Outputs |
| 文件： | 总4页 (文件大小：41K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
August 1986
Revised February 2000
DM7426
Quad 2-Input NAND Gates with
High Voltage Open-Collector Outputs
General Description
Pull-Up Resistor Equations
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.
Where:
N1 (IOH) = total maximum output high current
for all outputs tied to pull-up resistor
N2 (IIH) = total maximum input high current for
all inputs tied to pull-up resistor
N3 (IIL) = total maximum input low current for
all inputs tied to pull-up resistor
Ordering Code:
Order Number Package Number
Package Description
DM7426N
N14A
14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
Connection Diagram
Function Table
Y = AB
Inputs
Output
A
L
B
L
Y
H
H
H
L
L
H
L
H
H
H
H = HIGH Logic Level
L = LOW Logic Level
© 2000 Fairchild Semiconductor Corporation
DS006508
www.fairchildsemi.com
Absolute Maximum Ratings(Note 1)
Note 1: The “Absolute Maximum Ratings” are those values beyond which
the safety of the device cannot be guaranteed. The device should not be
operated at these limits. The parametric values defined in the Electrical
Characteristics tables are not guaranteed at the absolute maximum ratings.
The “Recommended Operating Conditions” table will define the conditions
for actual device operation.
Supply Voltage
Input Voltage
Output Voltage
7V
5.5V
15V
Operating Free Air Temperature Range
Storage Temperature Range
0°C to +70°C
−65°C to +150°C
Recommended Operating Conditions
Symbol
VCC
Parameter
Supply Voltage
Min
4.75
2
Nom
Max
Units
V
5
5.25
VIH
VIL
VOH
IOL
TA
HIGH Level Input Voltage
LOW Level Input Voltage
HIGH Level Output Voltage
LOW Level Output Current
Free Air Operating Temperature
V
0.8
15
16
70
V
V
mA
°C
0
Electrical Characteristics
over recommended operating free air temperature range (unless otherwise noted)
Typ
Symbol
Parameter
Conditions
= Min, I = −12 mA
Min
Max
Units
(Note 2)
V
Input Clamp Voltage
HIGH Level
V
V
V
V
V
V
−1.5
1000
50
V
I
CC
I
I
= Min
V
V
= 15V
CEX
CC
O
µA
Output Current
= Max
= 12V
IL
O
V
LOW Level
= Min, I = Max
CC OL
OL
0.4
1
V
Output Voltage
= Min
IH
I
Input Current @ Max
Input Voltage
= Max,
CC
I
mA
V = 5.5V
I
I
I
I
I
High Level Input Current
Low Level Input Current
Supply Current with Outputs HIGH
Supply Current with Outputs LOW
V
V
V
V
= Max, V = 2.4V
40
−1.6
8
µA
mA
mA
mA
IH
CC
CC
CC
CC
I
= Max, V = 0.4V
IL
I
= Max
= Max
4
CCH
CCL
12
22
Note 2: All typicals are at V = 5V, T = 25°C.
CC
A
Switching Characteristics
at VCC = 5V and T = 25°C
A
Symbol
Parameter
Propagation Delay Time
Conditions
Min
Max
Units
t
C
R
= 15 pF
PLH
L
24
ns
LOW-to-HIGH Level Output
Propagation Delay Time
HIGH-to-LOW Level Output
= 1 kΩ (t
)
PLH
L
t
PHL
17
ns
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2
Physical Dimensions inches (millimeters) unless otherwise noted
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.
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3
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