After searching for a budget friendly TTL to RS422/485 converter board I was astonished to only find products that were $45 plus and bulky for such a simple and common use case.

This lead me to design this TTL to RS422/485 converter board for interfacing microcontrollers to industrial sensors and controllers.

The design features:
- Full duplex communication with the Texas Instruments SN65HVD33 transceiver, ensuring seamless full-duplex communication.
- Two dedicated ground reference pins for RS422/485 output. This not only enhances signal quality but also reduces the risk of noise interference, making your data communication smoother.
- 120 Ohm termination resistors for improved signal integrity
- ESD protection on all signal pins
- Compact 40mm x 25mm design
- Professional and easy to use Molex 6-pin Picoblade connectors. These are extremely common with pre-crimped cables readily available.