MAX3233E-MAX3235E MAXIM [Maxim Integrated Products], MAX3233E-MAX3235E Datasheet - Page 5

• Manufacturer Part Number: MAX3233E-MAX3235E
• Manufacturer: MAXIM [Maxim Integrated Products]

±15kV ESD-Protected, 1µA, 250kbps, 3.3V/5V, Dual
______________________________________________________________Pin Description
RS-232 Transceivers with Internal Capacitors
11, 12
PIN
19
20
10
13
14
15
16
17
18
1
2
3
4
5
7
8
9
6
_______________________________________________________________________________________
FORCEOFF
FORCEON
INVALID
R2OUT
R1OUT
T1OUT
T2OUT
NAME
R1IN
R2IN
GND
T1IN
C1+
C2+
T2N
V
C1-
C2-
V+
V-
CC
TTL/CMOS Receiver Outputs
Invalid Signal Detector Output, active low. A logic high indicates that a valid RS-232
level is present on a receiver.
TTL/CMOS Transmitter Outputs
Force-On Input, active high. Drive high to override AutoShutdown Plus, keeping
transmitters and receivers active (FORCEOFF must be high) (Table 1).
RS-232 Transmitter Outputs
RS-232 Receiver Outputs
Supply Voltage (MAX3233E = +3.3V, MAX3235E = +5.0V)
Force-Off Input, active low. Drive low to shut down transmitters, receivers, and charge
pump. This overrides AutoShutdown Plus and FORCEON (Table 1).
+5.5V generated by the charge pump. Do not connect.
Positive terminal of the internal voltage-doubling charge-pump capacitor. Leave
unconnected or connect to an external 0.1µF capacitor. See Charge Pump Section.
Negative terminal of the internal voltage-doubling charge-pump capacitor. Leave
unconnected or connect to an external 0.1µF capacitor. See Charge Pump Section.
Positive terminal of the internal inverting charge-pump capacitor. Do not connect.
Negative terminal of the internal inverting charge-pump capacitor. Do not connect.
-5.5V generated by the charge pump. Do not connect.
Ground
FUNCTION
5