ST3222E

Pin configuration

3/15

1

Pin configuration

Figure 1.

Pin connection

Table 2.

Pin description

Pin n°

Symbol

Name and function

1EN

Receiver enable control. drive low for normal operation. Drive high to force the

receivers outputs (R_OUT) into a high-impedance state.

Positive terminal for the first charge pump capacitor

3

V+

5.5V Generated by the charge pump.

Negative terminal for the first charge pump capacitor

Positive terminal for the second charge pump capacitor

Negative terminal for the second charge pump capacitor

7

V-

-5.5V Generated by the charge pump.

Second transmitter output voltage

Second receiver input voltage

10

Second receiver output voltage

11

NC

Not connected

12

Second transmitter input voltage

13

First transmitter input voltage

14

NC

Not connected

15

First receiver output voltage

16

First receiver input voltage

17

First transmitter output voltage

18

GND

Ground

19

Supply voltage

20

SHDN

Active low shutdown control input. drive low to shut-down transmitter and charge pump