2

4762B–AUTO–09/05

U6803B

2.

Pin Configuration

Figure 2-1.

Pinning SO8

3.

Basic Circuitry

The integrated circuit U6803B requires a stabilized supply voltage (V

its electrical characteristics. An external buffer capacitor of C = 100 nF is recommended. An inte-

grated 14V Zener diode between V

All input stages are provided with an integrated 250 k

Ω pull-up resistor and can be directly con-

nected to a microcontroller.

All output stages are open collectors, each capable of sinking 20 mA. Recommended external

components:

• Pull-up resistor, R = 1 k

Ω

• Capacitor to GND, C = 470 pF, see Figure 4-1 on page 3

1

2

3

4

8

7

6

5

VO1

GND

VO2

VO3

VI1

VS

VI2

VI3

Table 2-1.

Pin Description

Pin

Symbol

Function

1VO1

Output 1

2

GND

Ground

3VO2

Output 2

4VO3

Output 3

5

VI3

Input 3

6

VI2

Input 2

7

VS

Supply voltage 5V

8

VI1

Input 1