74HC138 Datasheet, PDF (3/7 Pages) NXP Semiconductors – 3-to-8 line decoder/demultiplexer; inverting

Philips Semiconductors
3-to-8 line decoder/demultiplexer; inverting
PIN DESCRIPTION
PIN NO.
1, 2, 3
4, 5
6
8
15, 14, 13, 12, 11, 10, 9, 7
16
SYMBOL
A₀ to A₂
E₁, E₂
E₃
GND
Y₀ to Y₇
V_CC
NAME AND FUNCTION
address inputs
enable inputs (active LOW)
enable input (active HIGH)
ground (0 V)
outputs (active LOW)
positive supply voltage
Product specification
74HC/HCT138
Fig.1 Pin configuration.
handbook, halfpage
1
2
3
4
5
6
A0
A1
A2
E1
E2
E3
Y0
15
Y1
14
Y2
13
Y3
12
Y4
11
Y5
10
Y6
9
Y7
7
MLB312
Fig.2 Logic symbol.
(a)
(b)
Fig.3 IEC logic symbol.
September 1993
3
Fig.4 Functional diagram.