74HC51 Просмотр технического описания (PDF) - STMicroelectronics
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74HC51 Datasheet PDF : 9 Pages
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M74HC51
INPUT AND OUTPUT EQUIVALENT CIRCUIT
PIN DESCRIPTION
PIN No
1, 12, 13, 9,
10, 11
2, 3, 4, 5
8, 6
7
14
SYMBOL NAME AND FUNCTION
1A to 1F
2A to 2D
1Y to 2Y
GND
VCC
Data Inputs
Data Inputs
Data Outputs
Ground (0V)
Positive Supply Voltage
TRUTH TABLE
1A 1B 1C 1D 1E 1F 1Y
H
H
H
X
X
X
L
X
X
X
H
H
H
L
ALL OTHER COMBINATIONS
H
TRUTH TABLE
2A
2B
2C
2D
2Y
H
H
X
X
L
X
X
H
H
L
ALL OTHER COMBINATIONS
H
X : Don’t Care
ABSOLUTE MAXIMUM RATINGS
Symbol
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
± 25
mA
ICC or IGND DC VCC or Ground Current
± 50
mA
PD
Power Dissipation
500(*)
mW
Tstg Storage Temperature
-65 to +150
°C
TL
Lead Temperature (10 sec)
300
°C
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is
not implied
(*) 500mW at 65 °C; derate to 300mW by 10mW/°C from 65°C to 85°C
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