The RXD output structure is an open-drain output stage. This allows the TLIN1024A-Q1 to be used with 3.3 V and 5 V I/O microprocessors. If the RXD pin of the microprocessor does not have an integrated pull-up, an external pull-up resistor to the microprocessor I/O supply voltage is required.

The V_SUP1/2 pins of the device should be decoupled with a 100 nF capacitor as close to the supply pin on the device as possible. The system should include additional decoupling on the V_SUP line as needed per the application requirements.