Hello and Welcome! If you have a technical question please check out our Forums. If you have an order or shipping question please refer to our Customer Support page. Please see all COVID-19 updates here and thank you for your continued support.


Member Since: March 7, 2012

Country: United States

  • In a typical application, five I/O lines are used to connect the motor driver to a microcontroller: the two input lines, IN1 and IN2, for direction control, one of the disable lines, D1 or D2, for PWM speed control, the status flag, SF, for monitoring motor driver errors, and the current sense output, FB, for monitoring motor current draw (connected to an analog-to-digital converter input). The control lines can be reduced to two pins if PWM signals are applied directly to the two input pins with both disable pins held inactive. A two-pin interface can also be achieved using one of the disable lines for PWM speed control and the INV input for direction control with IN1 and IN2 held at different values (i.e. one set HIGH and the other set LOW). In each of these cases, the other unused lines must be set to enable proper operation. For example, if D2 is used for the PWM input (as is typically the case), D1 must be held low to prevent it from disabling the motor driver.

No public wish lists :(