MAX232
Analog Devices / Maxim Integrated
Classic RS-232 transceiver family; widely available as a lower-voltage-era counterpart for 5 V systems.
475 in stock
Overview
The MAX232 is a dual-channel RS-232 line driver and receiver designed for 5V systems. It utilizes an internal charge pump to generate the necessary RS-232 voltage levels from a single 5V supply, eliminating the need for external bipolar power rails.
Why Choose This Part
The integrated charge pump and capacitors minimize board space by requiring only external 0.1uF or 1uF caps to function. It provides robust protection with +/-30V input tolerance and features a low-power shutdown mode that reduces current draw to 50uA.
Applications
Legacy Industrial Interfaces
Connecting 5V microcontrollers to older industrial PLCs and CNC machinery using the RS-232 standard.
Diagnostic Ports
Providing a robust serial console port for embedded system debugging and field service access.
Modem Communication
Interfacing low-voltage logic with external telecommunications equipment requiring +/-8V signals.
Getting Started
To use the MAX232, connect four external capacitors to the charge pump pins as specified in the datasheet for your specific package variant. Ensure the VCC supply is between 4.5V and 5.5V for proper voltage generation on the V+ and V- rails.
Part of
RS-232 Transceivers family
»
MAX232
MAX232 Family
| Part Number | Difference | Stock |
|---|---|---|
| MAX232DR (Texas Instruments) | SOIC-16 | 36,336 |
