L293DWP

Overview

The L293DWP is a quadruple half-H driver manufactured by Texas Instruments, designed to interface standard DTL or TTL logic with inductive loads. It operates within a supply voltage range of 4.5 V to 36 V and delivers a continuous output current of 600 mA per channel, with peak non-repetitive currents reaching 1.2 A. The device features independent supply inputs for logic and power sections, built-in clamp diodes for transient suppression, and thermal shutdown protection. Packaged in a 20-pin SOIC (DW) format, it supports switching frequencies up to 5 kHz.

Feature Summary

• Integrates four independent half-bridge drivers for dual DC motor control
• Includes internal clamp diodes for inductive load protection
• Features thermal shutdown circuitry for overtemperature safety

Applications

• DC motor speed and direction control systems
• Stepper motor driver interfaces
• Relay and solenoid switching circuits

Procurement Notes

Verify the package suffix 'WP' corresponds to the specific 20-pin SOIC variant required for your PCB footprint. Confirm that the 600 mA continuous current rating meets your application's thermal dissipation requirements without external heatsinking. Ensure input logic levels are compatible with your microcontroller's voltage domain.

Selection Notes

Select this component when a quad half-bridge configuration is needed for driving multiple low-to-medium power inductive loads from a single IC. It is suitable for applications requiring high noise immunity due to its TTL/DTL compatibility. Consider the thermal performance of the SOIC package if operating near maximum current limits.

Part Context

This part belongs to the L293 series of quadruple half-H drivers. It shares functional similarities with the L293N (PDIP) and L293D (SOIC), differing primarily in the specific tape-and-reel or tube packaging designation indicated by the suffix. It serves as a robust solution for basic motor control tasks in consumer electronics and industrial automation.

Replacement Considerations

The SN754410 is a functionally equivalent alternative offering similar electrical characteristics and pinout compatibility.