H-Bridge Motor Driver 1A - SN754410

Faster, cheaper, smaller, better, right? The SN754410 Quad Half H-Bridge is just that. Capable of driving high voltage motors using TTL 5V logic levels, the SN754410 can drive 4.5V up to 36V at 1.1A continuous output current!

For even higher current applications, it is possible to physically stack two devices on top of each other to get almost 2 A of drive current.

The SN754410 is a quad half H-bridge IC. This allows the chip to either control 4 motors in one direction using the 4 half H-bridges or to control 2 motors in both directions using a full H-bridge for each motor.

The following shows the connections for controlling 2 motors in either direction using 2 full H-bridges.

SN754410 Connections

Pin	Name	H-Bridge Function	Notes
1	1,2EN	Motor 1 Enable	Setting this pint o 0V (LOW) will turn off the motor, setting it to 5V (HIGH) will enable the motor. Connect this pin to the 5V supply, or use as an emergency shutoff.
2	1A	Motor 1 Forward	Set this pin to 5V (HIGH) to turn Motor1 in one direction. Motor Speed can be controlled by using PWM into this pin
3	1Y	Motor 1 Power	Connect to one pin of Motor1
4	Ground	Ground	Connect to ground - required for heat sinking
5	Ground	Ground	Connect to ground - required for heat sinking
6	2Y	Motor 1 Power	Connect to other pin of Motor1
7	2A	Motor 1 Reverse	Set this pin to 5V (HIGH) to turn Motor1 in the opposite direction. Motor Speed can be controlled by using PWM into this pin
8	VCC2	Motor Power Source	Positive power source for your motors. (i.e. connect to battery - max 36V)
9	3,4EN	Motor 2 Enable	Setting this pint o 0V (LOW) will turn off the motor, setting it to 5V (HIGH) will enable the motor. Connect this pin to the 5V supply, or use as an emergency shutoff.
10	3A	Motor 2 Forward	Set this pin to 5V (HIGH) to turn Motor2 in one direction. Motor Speed can be controlled by using PWM into this pin
11	3Y	Motor 2 Power	Connect to one pin of Motor2
12	Ground	Ground	Connect to ground - required for heat sinking
13	Ground	Ground	Connect to ground - required for heat sinking
14	4Y	Motor 2 Power	Connect to other pin of Motor2
15	4A	Motor 2 Reverse	Set this pin to 5V (HIGH) to turn Motor2 in the opposite direction. Motor Speed can be controlled by using PWM into this pin
16	VCC1	IC Logic Power	Regulated +5V (VCC / VDD)