PDF datasheet for the L293 quadruple half-H driver, commonly used in pairs as two H-bridges for small DC and stepper motors. Documents of this kind cover the 16-pin package, separate logic and motor supply pins, enable inputs, output current ratings and the need for external clamp diodes on the base L293, unlike the L293D. Use it when tracing why a motor will not turn or a bridge output is stuck. Check the exact suffix printed on the chip, because L293, L293B and L293D versions differ in ratings and built-in diodes.
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