M74HC27 Просмотр технического описания (PDF) - STMicroelectronics
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M74HC27 Datasheet PDF : 8 Pages
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M74HC27
INPUT AND OUTPUT EQUIVALENT CIRCUIT
PIN DESCRIPTION
PIN No
1, 3, 9
2, 4, 10
13, 5, 11
12, 6, 8
7
14
SYMBOL
1A to 3A
1B to 3B
1C to 3C
1Y to 3Y
GND
VCC
NAME AND FUNCTION
Data Inputs
Data Inputs
Data Inputs
Data Outputs
Ground (0V)
Positive Supply Voltage
TRUTH TABLE
A
B
C
Y
t(s) L
L
L
H
H
X
X
L
c X
H
X
L
du X
X
H
L
ro X : Don’t Care
P ABSOLUTE MAXIMUM RATINGS
lete Symbol
Parameter
Value
Unit
o VCC Supply Voltage
-0.5 to +7
V
bs VI
DC Input Voltage
-0.5 to VCC + 0.5
V
O VO
DC Output Voltage
-0.5 to VCC + 0.5
V
- IIK
DC Input Diode Current
± 20
mA
t(s) IOK
DC Output Diode Current
± 20
mA
IO
DC Output Current
± 25
mA
uc ICC or IGND DC VCC or Ground Current
± 50
mA
d PD
Power Dissipation
500(*)
mW
ro Tstg Storage Temperature
-65 to +150
°C
P TL
Lead Temperature (10 sec)
300
°C
te Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is
not implied
le (*) 500mW at 65 °C; derate to 300mW by 10mW/°C from 65°C to 85°C
so RECOMMENDED OPERATING CONDITIONS
ObSymbol
Parameter
Value
Unit
VCC Supply Voltage
VI
Input Voltage
VO
Output Voltage
Top
Operating Temperature
Input Rise and Fall Time
tr, tf
2 to 6
V
0 to VCC
V
0 to VCC
V
-55 to 125
°C
VCC = 2.0V
0 to 1000
ns
VCC = 4.5V
0 to 500
ns
VCC = 6.0V
0 to 400
ns
2/8
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