DM74AS1805N [FAIRCHILD]
Hex 2-Input NOR Driver; 十六进制2输入或非驱动器
| 型号： | DM74AS1805N |
| 厂家： | 
FAIRCHILD SEMICONDUCTOR |
| 描述： | Hex 2-Input NOR Driver |
| 文件： | 总4页 (文件大小：50K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
July 1985
Revised March 2000
DM74AS1805
Hex 2-Input NOR Driver
General Description
Features
These devices contain six independent 2-Input drivers
each of which performs the logic NOR function. The
DM74AS1805 is equivalent to the DM74AS805B but the
supply voltage and ground pins are centered in the pack-
age. This positioning of the supply voltage and ground pins
reduce the lead inductance of these pins. This reduction of
lead inductance will minimize noise generated onto either
the supply voltage or ground bus which is significant in high
current switching applications.
■ Switching specifications at 50 pF
■ Switching specifications guaranteed over full tempera-
ture and VCC range
■ Advanced oxide-isolated, ion-implanted Schottky TTL
process
■ Centered VCC and GND configuration provides minimum
lead inductance for high current switching applications
■ High capacitive drive capability
Ordering Code:
Order Number Package Number
Package Description
DM74AS1805WM
DM74AS1805N
M20B
N20A
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide
20-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 = A + B
INPUTS
OUTPUT
A
L
B
L
Y
H
L
L
H
L
H
H
L
H
L
H = HIGH Logic Level
L = LOW Logic Level
© 2000 Fairchild Semiconductor Corporation
DS008618
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Absolute Maximum Ratings(Note 1)
Supply Voltage
Input Voltage
7V
7V
Operating Free Air Temperature
Storage Temperature Range
Typical θJA
0°C to 70°C
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.
−65°C to +150°C
N Package
58.3°C/W
M Package
154.0°C/W
Recommended Operating Conditions
Symbol
Parameter
Min
4.5
2
Nom
Max
Units
V
VCC
VIH
VIL
IOH
IOL
TA
Supply Voltage
5
5.5
HIGH Level Input Voltage
V
LOW Level Input Voltage
0.8
−48
48
V
HIGH Level Output Current
LOW Level Output Current
Operating Free Air Temperature Range
mA
mA
°C
0
70
Electrical Characteristics
over recommended operating free air temperature range
Symbol
Parameter
Input Clamp Voltage
Conditions
Min
Typ
Max
Units
V
V
V
= 4.5V, I = −18 mA
−1.2
V
IK
CC
I
HIGH Level
I
I
I
= −2 mA, V = 4.5V to 5.5V
V
−2
OH
OH
CC
CC
Output Voltage
= −3 mA, V = 4.5V
2.4
3.2
V
OH
OH
CC
= Max, V = 4.5V
2
CC
V
LOW Level Output Voltage
V
V
V
V
V
= 4.5V, I = Max, V = 2V
0.5
100
20
V
OL
CC
CC
CC
CC
CC
OL
IH
I
Input Current at Maximum Input Voltage
HIGH Level Input Current
= 5.5V, V = 7V
µA
µA
µA
mA
mA
mA
I
I
I
= 5.5V, V = 2.7V
I
IH
I
LOW Level Input Current
= 5.5V, V = 0.4V
−500
−200
10
IL
I
I
Output Drive Current
= 5.5V, V = 2.25V
−50
−135
6.5
O
O
I
Supply Current with Outputs HIGH
Supply Current with Outputs LOW
V
= 5.5V
= 5.5V
CC
CCH
CC
I
V
20
32
CCL
Switching Characteristics
over recommended operating free air temperature range
Symbol
Parameter
Propagation Delay Time
Conditions
Min
Max
Units
T
T
V
= 4.5V to 5.5V
= 500Ω
PLH
CC
1
4.3
ns
LOW-to-HIGH Level Output
Propagation Delay Time
HIGH-to-LOW Level Output
R
C
L
= 50 pF
PHL
L
1
4.3
ns
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2
Physical Dimensions inches (millimeters) unless otherwise noted
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide
Package Number M20B
3
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Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
Package Number N20A
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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