ST3222 ST Microelectronics, ST3222 Datasheet - Page 2

• Manufacturer Part Number: ST3222
• Description: RS-232 DRIVERS AND RECEIVERS
• Manufacturer: ST Microelectronics

ST3222
PIN CONFIGURATION
PIN DESCRIPTION
2/9
PlN N° (SO-18)
10
11
12
13
14
15
16
17
18
1
2
3
4
5
6
7
8
9
PlN N° (TSSP20)
SO-18
10
12
13
14
15
16
17
18
19
20
11
1
2
3
4
5
6
7
8
9
SYMBOL
T2
R2
R1
T1
SHDN
GND
R2
R1
T2
T1
V
C
C
C
C
NC
NC
EN
V+
V-
OUT
OUT
CC
OUT
OUT
1
2
1
2
IN
IN
IN
IN
+
+
-
-
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
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
-5.5V Generated By The Charge Pump.
Second Transmitter Output Voltage
Second Receiver Input Voltage
Second Receiver Output Voltage
Not Connected
Second Transmitter Input Voltage
First Transmitter Input Voltage
Not Connected
First Receiver Output Voltage
First Receiver Input Voltage
First Transmitter Output Voltage
Ground
Supply Voltage
Active Low Shutdown Control Input. Drive Low To
Shut-down Trnasmittes And Charge Pump
TSSOP20
NAME AND FUNCTION