The L293 and 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.

Para esto debemos conectar cada una de las dos bobinas en un puente en H (H-Bridge). Para esto, utilizaremos el integrado L293 que contiene dos H-Bridge (datasheet). Para controlar motores paso a paso con Arduino, L298 Jenuary 2000 DUALFULL-BRIDGE DRIVER Multiwatt15 ORDERING NUMBERS :L298N (Multiwatt Vert.) L298HN (Multiwatt Horiz.) L298P (PowerSO20) BLOCK DIAGRAM