74HC138BQ データシートの表示（PDF） - Nexperia B.V. All rights reserved
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74HC138BQ Datasheet PDF : 16 Pages
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Nexperia
5. Pinning information
74HC138; 74HCT138
3-to-8 line decoder/demultiplexer; inverting
5.1. Pinning
74HC138
74HCT138
terminal 1
index area
74HC138
74HCT138
A0 1
16 VCC
A1 2
15 Y0
A2 3
14 Y1
E1 4
13 Y2
E2 5
12 Y3
E3 6
11 Y4
Y7 7
10 Y5
GND 8
9 Y6
aaa-028342
Fig. 4. Pin configuration SOT109-1
(SO16)
74HC138
74HCT138
A0 1
A1 2
A2 3
E1 4
E2 5
E3 6
Y7 7
GND 8
16 VCC
15 Y0
14 Y1
13 Y2
12 Y3
11 Y4
10 Y5
9 Y6
aaa-028343
Fig. 5. Pin configuration SOT338-1
(SSOP16) and SOT403-1
(TSSOP16)
Fig. 6.
A1 2
A2 3
E1 4
E2 5
E3 6
Y7 7
GND(1)
15 Y0
14 Y1
13 Y2
12 Y3
11 Y4
10 Y5
001aae060
Transparent top view
(1) This is not a ground
pin. There is no electrical
or mechanical requirement
to solder the pad. In case
soldered, the solder land
should remain floating or
connected to GND.
Pin configuration SOT763-1
(DHVQFN16)
5.2. Pin description
Table 2. Pin description
Symbol
A0, A1, A2
E1, E2
E3
Y0, Y1, Y2, Y3, Y4, Y5, Y6, Y7
GND
VCC
Pin
1, 2, 3
4, 5
6
15, 14, 13, 12, 11, 10, 9, 7
8
16
Description
address input
enable input (active LOW)
enable input (active HIGH)
output
ground (0 V)
supply voltage
74HC_HCT138
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 8 — 7 April 2020
© Nexperia B.V. 2020. All rights reserved
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