74AC20B(1997) View Datasheet(PDF) - STMicroelectronics
Part Name
Description
Manufacturer
74AC20B Datasheet PDF : 7 Pages
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74AC20
INPUT AND OUTPUT EQUIVALENT CIRCUIT
PIN DESCRIPTION
PIN No
1, 9
2, 10
3, 11
5, 13
6, 8
7
14
SYMBOL
1A to 2A
1B to 2B
1C to 2C
1D to 2D
1Y to 2Y
GND
VCC
NAME AND FUNCTION
Data Inputs
Data Inputs
Data Inputs
Data Inputs
Data Outputs
Ground (0V)
Positive Supply Voltage
TRUTH TABLE
A
B
C
C
Y
L
X
X
X
H
X
L
X
X
H
X
X
L
X
H
X
X
X
L
H
H
H
H
H
L
ABSOLUTE MAXIMUM RATINGS
Sy mb o l
Parameter
Value
Unit
VCC Supply Voltage
-0.5 to +7
V
VI
DC Input Voltage
-0.5 to VCC + 0.5
V
VO
DC Output Voltage
-0.5 to VCC + 0.5
V
IIK
DC Input Diode Current
± 20
mA
IOK
DC Output Diode Current
± 20
mA
IO
DC Output Current
± 50
mA
ICC or IGND DC VCC or Ground Current
± 100
mA
Tstg Storage Temperature
-65 to +150
oC
TL
Lead Temperature (10 sec)
300
oC
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied.
RECOMMENDED OPERATING CONDITIONS
Sy mb o l
Parameter
VCC Supply Voltage
VI
Input Voltage
VO
Output Voltage
Top Operating Temperature:
dt/dv Input Rise and Fall Time VCC = 3.0, 4.5 or 5.5 V(note 1)
1) VIN from 30% to 70% of VCC
Value
2 to 6
0 to VCC
0 to VCC
-40 to +85
8
Un it
V
V
V
oC
ns/V
2/7
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