Datasheet for the MAX233, a Maxim RS-232 line driver and receiver that needs no external charge-pump capacitors, running from a single 5 V supply. The 454 KB PDF typically covers the related family, with pinouts, typical operating circuits, electrical characteristics and package details. Technicians use it to troubleshoot serial ports on industrial equipment, test the generated plus and minus voltages, and identify TX and RX pins. Note its pinout differs from the common MAX232, so do not swap them directly.
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