L293D Motor Driver IC – Dual H-Bridge Motor Controller for Robotics & Arduino Projects

The L293D is a popular quadruple half-H bridge motor driver IC designed to control two DC motors or one bipolar stepper motor from standard digital logic signals. This high-voltage, high-current driver can interface directly with TTL/DTL logic and is engineered to drive inductive loads such as DC motors, relays, solenoids, and small stepper motors.

With a wide 4.5V – 36V motor supply range and a separate 5V logic section, the L293D allows flexible integration into Arduino, robotics, automation, and motor-control projects. Each output channel can deliver 600 mA continuous current (1.2A peak) and includes built-in clamp diodes for safe switching of inductive loads.

Thermal shutdown protection, noise-immune inputs, and a compact 16-pin DIP package make this IC ideal for both prototyping and professional embedded designs. Whether you’re building an RC car, robotic arm, CNC driver, or electronic speed controller, the L293D provides reliable bidirectional speed and direction control.

• Drives two DC motors simultaneously or one bipolar stepper motor

• Bidirectional speed and direction control

• Motor supply voltage: 4.5V to 36V

• Output current: 600 mA continuous, 1.2A peak per channel

• Built-in clamp diodes for inductive load protection

• Separate logic voltage input (4.5–7V) for microcontroller compatibility

• Thermal shutdown and ESD protection for safe operation

• Handles inductive loads: motors, solenoids, relays

• Ideal for Arduino, robotics, CNC, automation, hobby projects

• Convenient 16-pin DIP through-hole package
  

  Specification	Details
  Product Model	L293D
  Function	Quad Half-Bridge Motor Driver
  Number of Channels	4
  Supported Motors	DC, Bipolar Stepper
  Continuous Output Current	600mA/channel
  Peak Output Current	1.2A/channel
  Motor Supply Voltage	4.5V – 36V
  Logic Supply Voltage	4.5V – 7V
  Control Interface	TTL/DTL Compatible
  Protection	Thermal Shutdown, ESD
  Clamp Diodes	Integrated
  Switching Frequency	Up to ~5 kHz
  Operating Temperature	–40°C to +150°C (Tj)
  Package Type	16-pin DIP (Through-Hole)
  Applications	Robotics, Arduino, Motor Control, Automation
  Equivalent Alternatives	SN754410, LB1909MC, ULN2003