MAX232 Applications

Route UART TX to T1IN (11), then T1OUT (14) to the remote receiver. Bring the remote transmit line into R1IN (13), with R1OUT (12) returning to UART RX.

Use a common signal ground. Check the remote connector’s DTE/DCE pin assignment.

Use the four 1 µF pump capacitors and a local supply bypass as shown in the reference circuit. Keep these connections short and check polarity when using polarized capacitors.

VS+ and VS− serve the charge pump; they are not supply rails for other components.

Find MAX232 in the Components Library to place its schematic symbol and connect its pins.