74HCT4538N 查看數據表（PDF） - NXP Semiconductors.
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74HCT4538N Datasheet PDF : 24 Pages
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NXP Semiconductors
74HC4538; 74HCT4538
Dual retriggerable precision monostable multivibrator
5. Pinning information
5.1 Pinning
74HC4538
74HCT4538
1CEXT 1
1REXT/CEXT 2
16 VCC
15 2CEXT
1CD 3
1B 4
14 2REXT/CEXT
13 2CD
1A 5
12 2B
1Q 6
1Q 7
11 2A
10 2Q
GND 8
9 2Q
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Fig 3. Pin configuration for DIP16 and SO16
74HC4538
74HCT4538
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
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Fig 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
74HC_HCT4538_3
Product data sheet
Rev. 03 — 8 June 2009
© NXP B.V. 2009. All rights reserved.
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