74HC4538 查看數據表（PDF） - Nexperia B.V. All rights reserved
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74HC4538 Datasheet PDF : 21 Pages
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Nexperia
5 Pinning information
74HC4538
Dual retriggerable precision monostable multivibrator
5.1 Pinning
74HC4538
1CEXT 1
1REXT/CEXT 2
16 VCC
15 2CEXT
1CD 3
14 2REXT/CEXT
1B 4
13 2CD
1A 5
12 2B
1Q 6
11 2A
1Q 7
10 2Q
GND 8
9 2Q
aaa-026540
Figure 3. Pin configuration for SO16
74HC4538
1CEXT 1
1REXT/CEXT 2
1CD 3
1B 4
1A 5
1Q 6
1Q 7
GND 8
16 VCC
15 2CEXT
14 2REXT/CEXT
13 2CD
12 2B
11 2A
10 2Q
9 2Q
aaa-026542
Figure 4. Pin configuration for SSOP16 and TSSOP16
5.2 Pin description
Table 2. Pin description
Symbol
1CEXT, 2CEXT
1REXT/CEXT, 2REXT/CEXT
1CD, 2CD
1B, 2B
1A, 2A
1Q, 2Q
1Q, 2Q
GND
VCC
Pin
1, 15
2, 14
3, 13
4, 12
5, 11
6, 10
7, 9
8
16
Description
external capacitor connection (always connected to ground)
external capacitor/resistor connection
direct reset input (active LOW)
input (LOW to HIGH triggered)
input (HIGH to LOW triggered)
output
complementary output (active LOW)
ground (0 V)
supply voltage
74HC4538
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 5 — 17 March 2017
© Nexperia B.V. 2017. All rights reserved.
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