ST3243E ST Microelectronics, ST3243E Datasheet - Page 3

• Manufacturer Part Number: ST3243E
• Description: RS-232 TRANSCEIVER WITH AUTO-POWERDOWN
• Manufacturer: ST Microelectronics

PIN DESCRIPTION
PlN N°
C1
C2
C5
C6
D1
D2
D3
D4
D5
D6
A1
A2
A3
A4
A5
A6
B1
B2
B3
B4
B5
B6
E1
E2
E3
E4
E5
E6
FORCEOFF
FORCEON
SYMBOL
INVALID
R2
R4
R5
R1
R3
R2
T1
T2
T3
GND
R2
R3
R4
R5
R1
T3
T1
T2
C
C
V
C
C
V+
V-
OUTB
OUT
OUT
OUT
CC
2
OUT
OUT
1
OUT
OUT
OUT
2
1
IN
IN
IN
IN
IN
IN
IN
IN
+
+
-
-
Second Receiver Input Voltage
Third Receiver Input Voltage
Fourth Receiver Input Voltage
Fifth Receiver Input Voltage
First Transmitter Output Voltage
Second Transmitter Output Voltage
-5.5V Generated by the Charge Pump
First Receiver Input Voltage
Third Transmitter Output Voltage
Third Transmitter Input Voltage
First Transmitter Input Voltage
Second Transmitter Input Voltage
Positive Terminal of Inverting Charge Pump Capacitor
Negative Terminal of Inverting Charge Pump Capacitor
Fourth Receiver Output Voltage
Fifth Receiver Output Voltage
Positive Terminal of Voltage- Charge Pump Capacitor
5.5V Generated by the Charge Pump
Supply Voltage
Drive high to override automatic circuitry keeping transmitters
on (FORCEOFF must be high)
First Receiver Output Voltage
Third Receiver Output Voltage
Ground
Negative Terminal of Voltage- Charge Pump Capacitor
Drive low to shut down transmitters and on-board power
supply. This over-rides all automatic circuitry and FORCEON
Output of the valid signal detector. Indicates if a valid RS-232
level is present on receiver inputs logic "1"
Non-inverting Complementary Receiver Output, always active
for wake-up
Second Receiver Output Voltage
NAME AND FUNCTION
ST3243E
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