A motor drive circuit in which a first bipolar transistor is disposed between a ground terminal and one terminal of a motor, and a second bipolar transistor is disposed between the ground terminal and another terminal of the motor. Each of the transistors has a reverse breakdown voltage between an emitter and a collector which is greater than a voltage of a power source and has a reverse-direction h.sub.fe which is greater than or equal to a predetermined value. A resistor and a capacitor are disposed in parallel between respective bases of the first and second bipolar transistors and a ground terminal. Potential drawbacks can be prevented even when voltage of reverse polarity is supplied.