74HC4538(2008) Ver la hoja de datos (PDF) - STMicroelectronics

Número de pieza

componentes Descripción

fabricante

74HC4538
(Rev.:2008)

Dual retriggerable monostable multivibrator

STMicroelectronics 

Pin connection and IEC logic symbols

1

Pin connection and IEC logic symbols

Figure 1. Pin connections and IEC logic symbols

1T1 1

1T2 2

1CD 3

1A 4

Inputs

1B 5

Q1 6

Outputs

Q1 7

GND 8

16 VCC

15 2T1

14 2T2

13 2CD Inputs

12 2A

11 2B

10 Q2

9 Q2

Outputs

M74HC4538

Table 2. Pin description

Pin number

Symbol

1, 15

2, 14

3, 13

4, 12

1T1, 2T1

1T2, 2T2

1CD, 2CD

1A, 2A

5, 11

6, 10

7, 9

8

16

1B, 2B

Q1, Q2

Q1, Q2

GND

VCC

Name and function

External capacitor connections

External resistor, capacitor connections

Direct reset inputs (active low)

Trigger inputs (low to high, edge-triggered)

Trigger inputs (high to low, edge-triggered)

Pulse outputs

Complementary pulse outputs

Ground (0 V)

Positive supply voltage

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