74LCX139 Datasheet, PDF (2/12 Pages) STMicroelectronics – LOW VOLTAGE CMOS DUAL 2 TO 4 DECODER/DEMULTIPLEXER

74LCX139
Figure 2: Input And Output Equivalent Circuit
Table 2: Pin Description
PIN N°
1, 15
2, 3
4, 5, 6, 7
12, 11, 10, 9
14, 13
8
16
Table 3: Truth Table
ENABLE
G
H
L
L
L
L
X : Don’t Care
INPUTS
SELECT
B
A
X
X
L
L
L
H
H
L
H
H
SYMBOL
1G, 2G
1A, 1B
1Y0 to 1Y3
2Y0 to 2Y3
2A, 2B
GND
V_CC
NAME AND FUNCTION
Enable Inputs
Address Inputs
Outputs
Outputs
Address Inputs
Ground (0V)
Positive Supply Voltage
OUTPUTS
Y0
Y1
Y2
Y3
H
H
H
H
L
H
H
H
H
L
H
H
H
H
L
H
H
H
H
L
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