The MAX232 device is a dual driver/receiver that includes a capacitive voltage generator to supply TIA/ EIA-232-F voltage levels from a single 5V supply. Each receiver converts TIA/EIA-232-F inputs to 5V TTL/CMOS levels. These receivers have a typical threshold of 1.3 V, a typical hysteresis of 0.5V, and can accept ±30V inputs. Each driver converts TTL/ CMOS input levels into TIA/EIA-232-F levels.
Meets or exceeds TIA/EIA-232-F and ITU recommendation V.28
Operates from a single 5V power supply with 1µF charge-pump capacitors
Operates up to 120kbit/s
Two drivers and two receivers • ±30V Input levels
Low supply current: 8mA typical
ESD protection exceeds JESD 22 – 2000V Human-body model (A114-A)
Upgrade with improved ESD (15kV HBM) and 0.1µF charge-pump capacitors is available with the MAX202 device
TIA/EIA-232-F
Battery-powered system
Terminals
Modems
Computers
PIN 1 RS232TX
PIN 2 RS232RX
PIN 3 RS485B
PIN 4 NC
PIN 5 RS485A
PIN 6 CANH
PIN 7 CANL
PIN 8 GND