L293DD Motor Driver, Datasheet, Pinout, Application Note

Explore the L293DD motor driver for DC and stepper motor control, including its pinout, Reference manual, and application note. Get access to L293DD circuit, Arduino board tutorials, SMD datasheet, and Eagle design files in pdf format. Learn about motor shield integration with NodeMCU ESP8266 and ESP12E for smooth motor control.

Brands: STMicroelectronics

Download: L293DD Datasheet PDF

Price: inquiry

In Stock: 14,373

MotorType-ACDC: Brushed DC

Function: Driver - Fully Integrated, Control and Power Stage

Output Configuration: Half Bridge (4)

Package: 20-SOIC (0.295, 7.50mm Width)

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L293DD Pinout Equivalent

l293dd pinout

L293DD Pinout

1：Overview of the L293DD：

L293DD Is a high voltage, high current motor drive chip, belongs to the classic L293 series of improved type, mainly used to control the DC motor or stepping motor positive and reverse, start and stop and speed regulation. The interior integrates two independent all-bridge drives (four channels), which can control 2 DC motors or 1 stepper motor simultaneously. Support forward rotation, reverse and braking, and control the motor direction through the input logic level. Built-in overcurrent protection, overheating protection and anti-electric motive potential diode, protect the motor and chip from surge damage. Compatible with TTL / 5V logic level, the control signal is directly connected with MCcontroller (such as Arduino, ESP32).

2：L293DD Important pin function definition:

（The 20-pin SOP (Small Outline Package) package is 12.80mm long, 7.50mm wide and 2.50mm1 high. This type of package is easy to mount on the circuit board, save space, and has good electrical and heat dissipation performance.）

Pin Number	Pin Name	Description
Pin1	Enable1	To enable or disable the first pair of output channels (Output 1 and Output 2), a high level is required.
Pin2	Input1	Used to control the motor direction of Output 1. Cooperates with Input2 to determine the operating direction of Motor 1.
Pin9	Input2	Cooperates with Input1 to control the motor direction of Output2, and then control the motion state of motor 1.
Pin12	Input3	Used to control the motor direction of Output3. Cooperates with Input4 to determine the operating direction of Motor2.
Pin18	Input4	Controls the direction of motor 4 in conjunction with Input3, thereby regulating the movement state of motor 2.
Pin3	Output1	Motor output pin, connected to one end of motor 1, outputs driving current to control the movement of motor 1.
Pin8	Output2	Motor output pin, connected to the other end of motor 1, and jointly with Output1 controls the forward rotation, reverse rotation, and braking of motor 1.
Pin13	Output3	Motor output pin, connected to one end of motor 2, outputs driving current to control the movement of motor 2.
Pin18	Output4	Cooperates with Input3 to control the motor direction of Output4, and then control the motion state of Motor2.
Pin20	VCC	Power pin, supplies power to the motor. The voltage range is generally from 4.5V to 36V.
Pin4/5/6/7/14/15/16/17	GND	Ground pin.

3：Alternative model recommendation

ACM293DD：ACM293DD is a motor driver chip primarily used for controlling dual DC motors or stepper motors.ACM293DD is a surface mount packaging alternative model of L293DD and supports direct replacement.

ACM293DD Picture

SN754410: A product of TI. It is often used to drive loads such as DC motors. It can provide a relatively high driving current and has good anti-interference performance. Compared with L293DD, SN754410 has better logic level compatibility and can be easily connected to various control circuits. It is more applicable in some circuits with high requirements for stability and reliability.

SN754410

SN754410 Picture

TB6612FNG： TB6612FNG integrates two H-bridge circuits and can independently drive two DC motors. It can also be used to drive a bipolar stepper motor. This chip adopts a miniaturized package, saving circuit board space. At the same time, it has the characteristics of low power consumption and high efficiency.
TB6612FNG

TB6612FNG Picture

A4950：A4950 is High-performance full bridge (H-bridge) PWM motor driver suitable for controlling DC motors and stepper motors. Operates within a voltage range of 8V to 45V (varies slightly by model, such as A4950ELJTR-T which supports up to 45V). Motor direction and speed are controlled via PWM signals input through the IN1/IN2 pins.
A4950