The L293D is a Dual H-bridge Motor Driver integrated circuit (IC) that enables a voltage to be applied across
a load in either direction. These circuits are often used in robotics and other applications
to allow DC motors to run forwards/backwards and enable/disable.
The L293D devices are quadruple high-
Current half-H drivers. The L293 is designed to
provide bidirectional drive currents of up to 1 A at
voltages from 4.5 V to 36 V. The L293D is designed
to provide bidirectional drive currents of up to 600-mA
at voltages from 4.5 V to 36 V. Both devices are
designed to drive inductive loads such as relays,
solenoids, DC and bipolar stepping motors, as well as
other high-current/high-voltage loads in positive-
supply applications.
Each output is a complete totem-pole drive circuit,
With a Darlington transistor sink and a pseudo-
Darlington source. Drivers are enabled in pairs, With
drivers I and 2 enabled by I ,2EN and drivers 3 and 4
enabled by 3,4EN.
