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74HCT138N Datasheet(PDF) 4 Page - NXP Semiconductors

Part No. 74HCT138N
Description  3-to-8 line decoder/demultiplexer; inverting
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Maker  NXP [NXP Semiconductors]
Homepage  http://www.nxp.com
Logo NXP - NXP Semiconductors

74HCT138N Datasheet(HTML) 4 Page - NXP Semiconductors

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74HC_HCT138
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2012. All rights reserved.
Product data sheet
Rev. 4 — 27 June 2012
4 of 19
NXP Semiconductors
74HC138; 74HCT138
3-to-8 line decoder/demultiplexer; inverting
5.2 Pin description
6.
Functional description
[1]
H = HIGH voltage level;
L = LOW voltage level;
X = don’t care.
7.
Limiting values
Table 2.
Pin description
Symbol
Pin
Description
A0, A1, A2
1, 2, 3
address input A0, A1, A2
E1, E2
4, 5
enable input E1, E2 (active LOW)
E3
6
enable input E3 (active HIGH)
Y0, Y1, Y2, Y3, Y4, Y5, Y6, Y7
15, 14, 13, 12, 11, 10, 9, 7
output Y0, Y1, Y2, Y3, Y4, Y5, Y6, Y7 (active LOW)
GND
8
ground (0 V)
VCC
16
positive supply voltage
Table 3.
Function table[1]
Control
Input
Output
E1
E2
E3
A2
A1
A0
Y7
Y6
Y5
Y4
Y3
Y2
Y1
Y0
H
XXXX
XH
H
H
H
H
H
H
H
XH
X
XX
L
L
L
H
L
L
L
HH
HH
HH
HL
L
L
H
H
HH
HH
HL
H
LH
LH
H
H
H
H
L
H
H
L
H
H
H
HH
HL
HH
H
H
L
L
H
HH
L
H
HH
H
H
L
H
H
HL
HH
HH
H
H
H
L
H
L
H
HH
HH
H
H
H
H
L
HH
HH
HH
H
Table 4.
Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V).
Symbol
Parameter
Conditions
Min
Max
Unit
VCC
supply voltage
−0.5
+7
V
IIK
input clamping current
VI <
−0.5 V or VI >VCC +0.5 V
-
±20
mA
IOK
output clamping current
VO <
−0.5 V or VO >VCC +0.5 V
-
±20
mA
IO
output current
VO =
−0.5 V to (VCC +0.5 V)
-
±25
mA
ICC
quiescent supply current
-
50
mA
IGND
ground current
-
−50
mA
Tstg
storage temperature
−65
+150
°C


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