3-V TO 5.5-V MULTICHANNEL RS-232 LINE DRIVER/RECEIVER
WITH
±15-kV
IEC ESD PROTECTION
SLLS664A – AUGUST 2005 – REVISED APRIL 2007
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DESCRIPTION/ORDERING INFORMATION (CONTINUED)
The MAX3232E device consists of two line drivers, two line receivers, and a dual charge-pump circuit with
±15-kV
IEC ESD protection pin to pin (serial-port connection pins, including GND). The device meets the
requirements of TIA/EIA-232-F and provides the electrical interface between an asynchronous communication
controller and the serial-port connector. The charge pump and four small external capacitors allow operation
from a single 3-V to 5.5-V supply. The devices operate at data signaling rates up to 250 kbit/s and a maximum
of 30-V/µs driver output slew rate.
FUNCTION TABLES
ABC
EACH DRIVER
(1)
INPUT
DIN
L
H
(1)
OUTPUT
DOUT
H
L
H = high level, L = low level
EACH RECEIVER
(1)
INPUT
RIN
L
H
Open
(1)
OUTPUT
ROUT
H
L
H
H = high level, L = low level,
Open = input disconnected or
connected driver off
LOGIC DIAGRAM (POSITIVE LOGIC)
11
DIN1
10
DIN2
12
ROUT1
9
ROUT2
8
RIN2
13
RIN1
7
DOUT2
14
DOUT1
2
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