L293-dat

Info

chip info, datasheet, etc.

The L293D is a 16-pin motor driver IC, also known as a quad half-H driver, capable of controlling two DC motors or a single stepper motor, offering bidirectional drive currents of up to 600mA per channel at voltages from 4.5V to 36V.

App.

• SDR1064-dat - nodemcu-dat

• SDR1060-dat - arduino-ide-dat

🔌 L293 vs L293D: Key Differences

Feature	L293	L293D
Internal Flyback Diodes	❌ No	✅ Yes (built-in protection diodes)
Maximum Output Current	Up to 1 A (peak 2 A)	Up to 600 mA (peak 1.2 A)
Cost	Slightly cheaper	Slightly more expensive
Protection	Needs external diodes	Protected against back EMF

Simple Schematic

demo code

• single DC motor control Chip-dat/TI-dat/TI-Motor-dat/L293-dat/afMotor-1.ino

simple demo code

// Pin definitions
const int ENA = 9;
const int IN1 = 8;
const int IN2 = 7;

void setup() {
    pinMode(ENA, OUTPUT);
    pinMode(IN1, OUTPUT);
    pinMode(IN2, OUTPUT);
}

void loop() {
    // Forward
    digitalWrite(IN1, HIGH);
    digitalWrite(IN2, LOW);
    analogWrite(ENA, 200);  // PWM speed (0~255)
    delay(2000);

    // Stop
    analogWrite(ENA, 0);
    delay(1000);

    // Backward
    digitalWrite(IN1, LOW);
    digitalWrite(IN2, HIGH);
    analogWrite(ENA, 200);
    delay(2000);

    // Stop
    analogWrite(ENA, 0);
    delay(1000);
}

simple demo code with inverter

const int ENA = 9;  // PWM for speed
const int IN1 = 8;  // Direction (IN2 is inverted in hardware)

void setup() {
pinMode(ENA, OUTPUT);
pinMode(IN1, OUTPUT);
}

void loop() {
// Forward
digitalWrite(IN1, HIGH);  // IN2 becomes LOW due to inverter
analogWrite(ENA, 200);    // Set speed
delay(2000);

// Stop
analogWrite(ENA, 0);
delay(1000);

// Backward
digitalWrite(IN1, LOW);   // IN2 becomes HIGH due to inverter
analogWrite(ENA, 200);    // Set speed
delay(2000);

// Stop
analogWrite(ENA, 0);
delay(1000);
}

ref

• SDR1064-dat - motor-driver-dat

• 74LVC2G04-dat - logic-inverter-dat - logic-gate-dat

• L293 - TI-motor