MAX3235EEPP Maxim Integrated Products, MAX3235EEPP Datasheet - Page 5

IC TXRX RS232 DUAL 250KBPS 20DIP

MAX3235EEPP

Manufacturer Part Number
MAX3235EEPP
Description
IC TXRX RS232 DUAL 250KBPS 20DIP
Manufacturer
Maxim Integrated Products
Type
Transceiverr
Datasheet

Specifications of MAX3235EEPP

Number Of Drivers/receivers
2/2
Protocol
RS232
Voltage - Supply
4.5 V ~ 5.5 V
Mounting Type
Through Hole
Package / Case
20-DIP (0.300", 7.62mm)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
±15kV ESD-Protected, 1µA, 250kbps, 3.3V/5V, Dual
RS-232 Transceivers with Internal Capacitors
______________________________________________________________Pin Description
PIN
NAME
1
R2OUT
6
R1OUT
INVALID
2
3
T2IN
4
T1IN
5
FORCEON
7
T1OUT
19
T2OUT
8
R1IN
20
R2IN
9
V
CC
FORCEOFF
10
11, 12
V+
13
C1+
14
C1-
15
C2+
16
C2-
17
V-
18
GND
_______________________________________________________________________________________
FUNCTION
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
5

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