BLOCK DIAGRAM

FUNCTIONAL TERMINAL CONNECTIONS

Terminal Connections

Function*

Input

Pulse to

Output

Pulse

From

Output Period

or

Pulse Width

Astable Multivibrator :

Free Running

True Gating

Complement Gating

4, 5, 6, 14

4, 6, 14

6, 14

7, 8, 9, 12

7, 8, 9, 12

5, 7, 8, 9 ,12

–

5

4

10, 11, 13

10, 11, 13

10, 11, 13

Monostable Multivibrator :

Positive–Edge Trigger

Negative–Edge Trigger

Retriggerable

External Countdown**

4, 14

4, 8, 14

4, 14

14

5, 6, 7, 9, 12

5, 7, 9, 12

5, 6, 7, 9

5, 6, 7, 8, 9, 12

8

6

8, 12

–

10, 11

10, 11

10, 11

10, 11

* In all cases external capacitor and resistor between pins, 1, 2 and 3 (see logic diagrams).

**

Input pulse to Reset of External Counting Chip.

External Counting Chip Output to pin 4.

HCC/HCF4047B

2/15