Fairchild DM74AS805B Hex 2-input nor driver Datasheet

Revised April 2000
DM74AS805B
Hex 2-Input NOR Driver
General Description
Features
These devices contain six independent drivers, each of
which performs the logic NOR function. Each driver has
increased output drive capability to allow the driving of high
capacitive loads.
■ Switching specifications at 50 pF
■ Switching specifications guaranteed over full temperature and VCC range
■ Advanced oxide-isolated, ion-implanted Schottky TTL
process
■ Functionally and pin for pin compatible with advanced
low power Schottky TTL counterpart
Ordering Code:
Order Number
Package Number
DM74AS805BWM
M20B
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide
Package Description
DM74AS805BN
N20A
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
B
Y
L
L
H
L
H
L
H
L
L
H
H
L
H = HIGH Logic Level
L = LOW Logic Level
© 2000 Fairchild Semiconductor Corporation
DS006327
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DM74AS805B Hex 2-Input NOR Driver
October 1986
DM74AS805B
Absolute Maximum Ratings(Note 1)
Supply Voltage
7V
Input Voltage
7V
0°C to +70°C
Operating Free Air Temperature Range
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
Storage Temperature Range
Typical θJA
N Package
58.3°C/W
M Package
154.0°C/W
Recommended Operating Conditions
Symbol
Parameter
Min
Nom
Max
Units
4.5
5
5.5
V
VCC
Supply Voltage
VIH
HIGH Level Input Voltage
VIL
LOW Level Input Voltage
0.8
V
IOH
HIGH Level Output Current
−48
mA
IOL
LOW Level Output Current
48
mA
TA
Free Air Operating Temperature
70
°C
2
V
0
Electrical Characteristics
over recommended operating free air temperature range. All typical values are measured at VCC = 5V, TA = 25°C.
Symbol
Parameter
Conditions
Min
Typ
VIK
Input Clamp Voltage
VCC = 4.5V, II = −18 mA
VOH
HIGH Level
IOH = −2 mA, VCC = 4.5V to 5.5V
Output Voltage
IOH = −3 mA, VCC = 4.5V
LOW Level
V
2.4
V
2
VCC = 4.5V,
0.35
IOL = Max
Output Voltage
Units
−1.2
VCC − 2
IOH = Max, VCC = 4.5V
VOL
Max
0.5
V
0.1
mA
II
Input Current @ Max Input Voltage VCC = 5.5V, VIH = 7V
IIH
HIGH Level Input Current
VCC = 5.5V, VIH = 2.7V
20
µA
IIL
LOW Level Input Current
VCC = 5.5V, VIL = 0.4V
−0.5
mA
IO
Output Drive Current
VCC = 5.5V, VO = 2.25V
ICC
Supply Current
VCC = 5.5V
−135
−200
mA
Outputs HIGH
−50
6.5
10
mA
Outputs LOW
18
32
mA
Switching Characteristics
over recommended operating free air temperature range
Symbol
Parameter
tPLH
tPHL
Conditions
Propagation Delay Time
VCC = 4.5V to 5.5V
LOW-to-HIGH Level Output
RL = 500Ω
Propagation Delay Time
CL = 50 pF
HIGH-to-LOW Level Output
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Min
Max
Units
1
4.3
ns
1
4.3
ns
DM74AS805B
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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DM74AS805B Hex 2-Input NOR Driver
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:
2. A critical component in any component of a life support
device or system whose failure to perform can be reasonably expected to cause the failure of the life support
device or system, or to affect its safety or effectiveness.
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 reasonably expected to result in a significant injury to the
user.
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