L293DNE Quadruple Half-H Driver: Symbol, Features, Advantages and More
26 October 2023
Ⅰ. Overview of L293DNE quadruple half-H driver
Ⅱ. L293DNE symbol, footprint and pin configuration
Ⅲ. Technical parameters of L293DNE<>/a
Ⅳ. What are the features of L293DNE?
Ⅴ. Working principle of L293DNE
Ⅵ. What are the advantages of the L293DNE quadruple half-H driver?
Ⅶ. Absolute maximum ratings of L293DNE
Ⅷ. What are the applications of L293DNE?
The L293DNE is a highly versatile half-H driver, designed to handle substantial current loads, with the capability to deliver up to 600mA of bidirectional drive current. Its operational voltage range spans from 4.5V to 36V, making it suitable for a wide array of applications. This impressive voltage range allows the L293DNE to efficiently power and control various inductive loads, including motors, relays, solenoids, and bipolar stepper motors, making it a valuable component in numerous electronic systems.
The device performs at its best when supplied with voltages up to 36V and draws only 24mA of power from the supply. The L293DNE is offered in a PDIP package, offering a convenient and secure physical structure for seamless integration into electronic circuits. Furthermore, it is also available in tube packaging to accommodate various preferences and manufacturing requirements.
Replacement and equivalent:
• L293N
L293DNE has a total of 16 pins, each of which performs different tasks in working state. Its pin names and descriptions are as follows:
Pin 1 (Enable 1, 2): Enable pin for motor 1- active high
Pin 2 (Input 1): Input 1 for motor 1
Pin 3 (Output 1): Output 1 for motor 1
Pin 4 (GND): Ground (0V)
Pin 5 (GND): Ground (0V)
Pin 6 (Output 2): Output 2 for motor 1
Pin 7 (Input 2): Input 2 for motor 1
Pin 8 (Vcc2)：Supply voltage (12V)
Pin 9 (Enable 3, 4): Enable pin for motor 2- active high
Pin 10 (Input 3): Input 1 for motor 2
Pin 11 (Output 3): Output 1 for motor 2
Pin 12 (GND): Ground (0V)
Pin 13 (GND): Ground (0V)
Pin 14 (Output put 4): Output 2 for motor 2
Pin 15 (Input 4)：Input 2 for motor 2
Pin 16 (Vcc1): Supply voltage (5V)
• It boasts a broad voltage range for power supply, specifically spanning from 4.5V to 36V for its independent input logic power source.
• L293DNE is a high-voltage bipolar stepper motor driver that can be used with equipment such as DSP, FPGA or microcontroller, and is widely used in motors or motion control systems.
• It supports different drive configurations such as full dual-bridge, full-bridge and 3-phase.
• It has a high peak output current, and the peak output current of each channel can reach 2 amps.
• It is often used in output clamp circuits for inductor transient suppression.
• L293DNE is designed for driving motors or complex loads through logical commands at input. It has logic level inputs, allowing it to control motor operation with simple logic commands.
• It also has functions such as overheating protection and short-circuit protection, which can effectively protect the safety of the motor and control system.
L293D contains two sets of half H-bridges internally, which are used to control the forward and reverse rotation of two motors or one motor. Specifically, when the pin 1 and pin 2 interfaces input high level, V1 is driven to output low level, and V2 remains high level. At this time, motor M1 will start to rotate forward. On the contrary, when the reverse signal is input to pins 2 and 1, the motor M1 will reverse. Similarly, pins 3 and 4 are used to control the forward and reverse rotation of motor M2. The adjustment of the motor speed is achieved by controlling the duty cycle of the signal. The high and low levels of the signal will cause the corresponding PWM port to produce short-term high and low level changes.
1. Strong driving ability
The L293DNE stepper motor driver chip can drive larger current motors and has higher driving capabilities.
2. Lower cost
Compared with other types of chips, the price of L293DNE stepper motor driver chip is more reasonable. Due to its price advantage, using L293DNE can effectively reduce the overall cost.
3. Perfect protection function
The L293DNE chip offers a range of protective features such as low voltage, overheating, and overcurrent safeguards. These protective functions serve to guarantee the chip and the overall circuit's secure functionality while enhancing the system's reliability and stability.
4. Strong anti-interference ability
L293DNE is an input device with high noise immunity. It uses advanced technology and design to effectively reduce the impact of external noise on the signal and ensure stable signal transmission.
5. High control accuracy
It can achieve high-precision control of the forward and reverse rotation and speed of the motor under the input logic level. In addition, it can also use pulse width modulation (PWM) to control the speed of the motor, making it highly accurate.
Over operating free-air temperature range (unless otherwise noted)
• Household electronic equipment: With robust driving capabilities, it effortlessly manages a wide range of motors, including those found in CD/DVD players. By utilizing the L293DNE control, we can ensure consistent disc rotation and precise control over the optical head's movement.
• Small robots and smart vehicles: L293DNE can be used to drive the motors of micro robots and smart cars to complete the control of forward, backward, left and right turns, etc.
• Motor controller: The L293DNE can also be used as a universal motor controller for controlling a variety of different types of motors, including DC motors, stepper motors, and bidirectional motors.
• DIY electronic projects: It can also be used to make various DIY electronic projects, such as automatic plant watering systems, remote control cars, and automated camera pan/tilts.
• Automation systems: L293DNE can also be used in automation systems, such as automatic lighting control, automated factory equipment and automated home equipment.
• Stepper motor control: The L293DNE is versatile, serving as an effective means to govern stepper motors, which find common applications in precision-oriented scenarios like CNC machine tools, 3D printers, and camera pan/tilt systems. It ensures the delivery of adequate current and pulse control to these motors.
Frequently Asked Questions
1. What is a L293DNE?
The L293DNE is a PTH quadruple, high-current, half-H driver IC. These ICs have been designed to provide bidirectional drive currents of up to 600mA at voltages from 4.5V to 36V.
2. What is the replacement and equivalent of L293DNE?
You can replace the L293DNE with the L293DNEE4, L293DNEG4 or L293N.
3. How does the L293DNE work?
The L293DNE is an H-bridge motor driver IC that can control the direction and speed of a motor by switching the voltage polarity applied to it. It consists of two H-bridges, allowing control of two motors or a single stepper motor.
4. How do I connect a motor to the L293DNE?
You connect the motor to the L293DNE by connecting one terminal of the motor to an output pin and the other terminal to ground or the supply voltage. The L293DNE has two channels, so you can control two motors independently.
