The MAX211 device consists of four line drivers, five line receivers, and a dual charge-pump circuit with ±15kV 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 5V supply. The devices operate at data signaling rates up to 120kbit/s and a maximum of 30V/µs driver output slew rate.
The MAX211 has both shutdown (SHDN) and enable control (EN). In shutdown mode, the charge pumps are turned off, V+ is pulled down to VCC, V− is pulled to GND, and the transmitter outputs are disabled. This reduces supply current typically to 1µA. EN is used to put the receiver outputs into the high-impedance state to allow wired-OR connection of two RS-232 ports. It has no effect on the RS-232 drivers or the charge pumps.
| Top documentation | Type | Title | Format options | Date |
|---|---|---|---|---|
| * | Data sheet | MAX211 5V Multichannel RS-232 Line Driver and Receiver with ±15kV ESD Protection datasheet (Rev. F) | PDF | HTML | Jul 11, 2024 |
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| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| SSOP (DB) | 28 | Ultra Librarian |
| SOIC (DW) | 28 | Ultra Librarian |
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