abbas14
Newbie level 4
hello everyone,
here is another question..
most of us must be aware of the well known motor driver IC L293D. it can drive a dc motor both unidirectionally as well as bidirectionally.
for unidirectional motion, only one logic input is required, whereas for bidirectional motion, two logic inputs are required. for bidirectional motion, it is quite obvious that one logic input has to be the logically inverted version of the second logic input (or vice versa). if both the inputs are logically same, the motor wouldn't simply run.
now, for driving a motor bidirectionally using only a single logic input (in order to save the microcontroller or microprocessor pins), a logical inverter gate can be used and two logic inputs can be generated from a single logic input. this is quite easy. but this also has a disadvantage of requiring an external hardware, thereby making the system bulky.
now, what i am trying to ask is isn't there any such ICs meant specifically for the purpose of driving a dc motor bidirectionally?? that is, that would have a NOT gate inbuilt into a single package, and would require only a single logic input for bidirectional motion, say 1 for FORWARD and 0 for BACKWARD???
can anyone help me with that???
here is another question..
most of us must be aware of the well known motor driver IC L293D. it can drive a dc motor both unidirectionally as well as bidirectionally.
for unidirectional motion, only one logic input is required, whereas for bidirectional motion, two logic inputs are required. for bidirectional motion, it is quite obvious that one logic input has to be the logically inverted version of the second logic input (or vice versa). if both the inputs are logically same, the motor wouldn't simply run.
now, for driving a motor bidirectionally using only a single logic input (in order to save the microcontroller or microprocessor pins), a logical inverter gate can be used and two logic inputs can be generated from a single logic input. this is quite easy. but this also has a disadvantage of requiring an external hardware, thereby making the system bulky.
now, what i am trying to ask is isn't there any such ICs meant specifically for the purpose of driving a dc motor bidirectionally?? that is, that would have a NOT gate inbuilt into a single package, and would require only a single logic input for bidirectional motion, say 1 for FORWARD and 0 for BACKWARD???
can anyone help me with that???
