L293DNE

Overview

The L293DNE is a monolithic integrated high-voltage, high-current quad half-h bridge motor driver manufactured by Texas Instruments. Designed for standard DTL or TTL logic levels, it drives inductive loads such as DC and stepper motors. The device features independent supply inputs for logic operation at lower voltages and includes built-in clamp diodes for switching transistors. It supports through-hole mounting in a PDIP-16 package with an operating temperature range of 0°C to +70°C.

Feature Summary

• Quad half-bridge architecture enabling control of two DC motors or one stepper motor
• Independent logic supply input allowing operation at lower voltage levels than the motor load
• Built-in clamp diodes to protect against inductive kickback from switching loads
• High noise immunity with logic '0' input voltage up to 1.5 V

Applications

• Driving brushed DC motors
• Controlling stepper motors
• Actuating relay coils
• Switching power transistors

Procurement Notes

Verify that the specific part number L293DNE corresponds to the Texas Instruments manufacturing source rather than other authorized producers. Confirm the PDIP-16 through-hole package type matches the design requirements. Ensure the component meets the specified industrial temperature range of 0°C to +70°C for the intended application environment. Check RoHS compliance status if environmental regulations apply to the final product assembly.

Selection Notes

Select this component when a quad half-bridge configuration is required for driving multiple inductive loads from standard logic interfaces. It is suitable for applications needing independent logic power supplies to isolate control circuitry from motor noise. Consider the thermal performance within the PDIP-16 package for current handling capabilities. Verify that the 36V maximum supply voltage aligns with the system's power distribution network.

Part Context

The L293DNE belongs to the L293D series of motor drivers produced by Texas Instruments. This series is designed for versatile motion control applications requiring robust interface with digital logic. The NE suffix typically denotes the specific packaging and material composition compliant with industry standards for through-hole integration. It serves as a key component in embedded systems managing mechanical actuators.

Replacement Considerations

L293D: Generic equivalent part number representing the same functional specification.