SLLS410N January 2000 – June 2017 MAX3232
The MAX3232 device consists of two line drivers, two line receivers, and a dual charge-pump circuit with ±15-kV ESD protection terminal to terminal (serial-port connection terminals, 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 device operates at data signaling rates up to 250 kbit/s and a maximum of 30-V/μs driver output slew rate. Outputs are protected against shorts to ground.
The power block increases, inverts, and regulates voltage at V+ and V- pins using a charge pump that requires four external capacitors.
Two drivers interface standard logic level to RS232 levels. Both DIN inputs must be valid high or low.
Two receivers interface RS232 levels to standard logic levels. An open input will result in a high output on ROUT. Each RIN input includes an internal standard RS232 load.
The device will be in normal operation.
When MAX3232 is unpowered, it can be safely connected to an active remote RS232 device.