74VHCT240A Просмотр технического описания (PDF) - STMicroelectronics
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74VHCT240A Datasheet PDF : 12 Pages
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74VHCT240A
Figure 2: Input Equivalent Circuit
Table 2: Pin Description
Table 3: Truth Table
PIN N°
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
Table 4: Absolute Maximum Ratings
OUTPUT
Yn
H
L
Z
Symbol
Parameter
VCC Supply Voltage
VI
DC Input Voltage
VO
DC Output Voltage (see note 1)
VO
DC Output Voltage (see note 2)
IIK
DC Input Diode Current
IOK
DC Output Diode Current
IO
DC Output Current
ICC or IGND DC VCC or Ground Current
Tstg Storage Temperature
TL
Lead Temperature (10 sec)
Value
Unit
-0.5 to +7.0
V
-0.5 to +7.0
V
-0.5 to +7.0
V
-0.5 to VCC + 0.5
V
- 20
mA
± 20
mA
± 25
mA
± 50
mA
-65 to +150
°C
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) Output in OFF State
2) High or Low State
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