74HC4538DB 데이터 시트보기 (PDF) - NXP Semiconductors.

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74HC4538DB

Dual retriggerable precision monostable multivibrator

NXP Semiconductors. 

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

001aak190

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

001aak191

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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