DM74LS26 [FAIRCHILD]
Quad 2-Input NAND Gate 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: | DM74LS26 |
厂家: | FAIRCHILD SEMICONDUCTOR |
描述: | Quad 2-Input NAND Gate with High Voltage Open-Collector Outputs |
文件: | 总4页 (文件大小:51K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
August 1986
Revised March 2000
DM74LS26
Quad 2-Input NAND Gate
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.
These gates feature high-voltage output ratings (up to 15V)
for interfacing with 12V systems. Although the outputs are
rated for 15V, the device supply is still rated for 5V.
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
DM74LS26M
DM74LS26N
M14A
N14A
14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150 Narrow
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.
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
DS006358
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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
7V
15V
Operating Free Air Temperature Range
Storage Temperature Range
0°C to +70°C
−65°C to +150°C
Recommended Operating Conditions
Symbol
Parameter
Min
4.75
2
Nom
Max
Units
V
VCC
VIH
VIL
Supply Voltage
5
5.25
HIGH Level Input Voltage
LOW Level Input Voltage
HIGH Level Output Voltage
LOW Level Output Current
Free Air Operating Temperature
V
0.8
15
8
V
VOH
IOL
V
mA
°C
TA
0
70
Electrical Characteristics
over recommended operating free air temperature range (unless otherwise noted)
Symbol Parameter Conditions
Input Clamp Voltage = Min, I = −18 mA
Typ
Min
Max
Units
(Note 2)
V
V
V
V
V
V
−1.5
1000
50
V
I
CC
CC
I
I
HIGH Level
= Min
V
V
= 15V
= 12V
CEX
O
µA
Output Current
LOW Level
= Max
IL
O
V
= Min, I = Max
OL
OL
CC
0.35
0.25
0.5
0.4
0.1
Output Voltage
= Min
V
IH
I
= 4 mA, V = Min
CC
OL
I
Input Current @ Max
V
= Max, V = 7V
CC I
I
mA
Input Voltage
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 = 2.7V
20
−0.36
1.6
µA
mA
mA
mA
IH
CC
CC
CC
CC
I
= Max, V = 0.4V
IL
I
= Max
= Max
0.8
2.4
CCH
CCL
4.4
Note 2: All typicals are at V = 5V, T = 25°C.
CC
A
Switching Characteristics
at VCC = 5V and T = 25°C
A
R
= 2 kΩ
L
Symbol
Parameter
C
= 15 pF
C
= 50 pF
Units
L
L
Min
Max
Min
Max
t
t
Propagation Delay Time
PLH
20
45
20
ns
ns
LOW-to-HIGH Level Output
Propagation Delay Time
HIGH-to-LOW Level Output
PHL
15
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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
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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.
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