74LVC244A データシートの表示（PDF） - STMicroelectronics
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74LVC244A Datasheet PDF : 9 Pages
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74LVC244A
INPUT AND OUTPUT EQUIVALENT CIRCUIT
PIN DESCRIPTION
TRUTH TABLE
PIN No
1
2, 4, 6, 8
9, 7, 5, 3
11, 13, 15,
17
18, 16, 14,
12
19
10
20
SYMBOL NAME AND FUNCTION
1G
1A1 to 1A4
2Y1 to 2Y4
2A1 to 2A4
Output Enable Input
Data Inputs
Data Outputs
Data Inputs
1Y1 to 1Y4 Data Outputs
2G
GND
VCC
Output Enable Input
Ground (0V)
Positive Supply Voltage
INPUTS
G
An
L
L
L
H
H
X
X : Don’t care
Z : High Impedance
OUTPUT
Yn
L
H
Z
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
VCC Supply Voltage
-0.5 to +7.0
V
VI
DC Input Voltage
-0.5 to +7.0
V
VO
DC Output Voltage (High Impedance or VCC = 0V)
-0.5 to +7.0
V
VO
DC Output Voltage (High or Low State) (note 1)
-0.5 to VCC + 0.5
V
IIK
DC Input Diode Current
- 50
mA
IOK
DC Output Diode Current (note 2)
- 50
mA
IO
DC Output Current
± 50
mA
ICC or IGND DC VCC or Ground Current per Supply Pin
± 100
mA
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
1) IO absolute maximum rating must be observed
2) VO < GND
2/9
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