HCF4047B

3/12

FUNCTIONAL TERMINAL CONNECTIONS

* 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.

LOGIC DIAGRAM

FUNCTION*

TERMINAL CONNECTIONS

OUTPUT

PULSE

FROM

OUTPUT PERIOD OR

PULSE WIDTH

Input Pulse

to

Astable Multivibrator

Free Running

4, 5, 6, 14

7, 8, 9, 12

-

10, 11, 13

True Gating

4, 6, 14

7, 8, 9, 12

5

10, 11, 13

Complement Gating

6, 14

5, 7, 8, 9, 12

4

10, 11, 13

Monostable Multivibrator

Positive - Edge Trigger

4, 14

5, 6, 7, 9, 12

8

10, 11

Negative - Edge Trigger

4, 8, 14

5, 7, 9, 12

6

10, 11

Retriggerable

4, 14

5, 6, 7, 9

8, 12

10, 11

External Countdown**

14

5, 6, 7, 8, 9,

12

-

10, 11