74LCX240M Datasheet, PDF (2/9 Pages) STMicroelectronics – LOW VOLTAGE CMOS OCTAL BUS BUFFER (3-STATE INV) WITH 5V TOLERANT INPUTS AND OUTPUTS

74LCX240
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
V_CC
Output Enable Input
Ground (0V)
Positive Supply Voltage
INPUT
G
An
L
L
L
H
H
X
X : Don’t Care
Z : High Impedance
OUTPUT
Yn
H
L
Z
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
V_CC Supply Voltage
-0.5 to +7.0
V
V_I
DC Input Voltage
-0.5 to +7.0
V
V_O
DC Output Voltage (OFF State)
-0.5 to +7.0
V
V_O
DC Output Voltage (High or Low State) (note 1)
-0.5 to V_CC + 0.5
V
I_IK
DC Input Diode Current
- 50
mA
I_OK
DC Output Diode Current (note 2)
- 50
mA
I_O
DC Output Current
± 50
mA
I_CC
DC Supply Current per Supply Pin
± 100
mA
I_GND DC Ground Current per Supply Pin
± 100
mA
T_stg Storage Temperature
-65 to +150
°C
T_L
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) I_O absolute maximum rating must be observed
2) V_O < GND
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