Texas Instruments SN754410NE

Overview

SN754410NE from Texas Instruments is a quadruple high-current half-H driver IC designed for bidirectional DC motor and bipolar stepper motor control, delivering up to 1 A per channel at 4.5 V–36 V output supply (VCC2), with TTL/CMOS-compatible inputs and separate 5-V logic supply (VCC1). It integrates Darlington sink and pseudo-Darlington source outputs, thermal shutdown, and interlocked enable pairs (1,2EN and 3,4EN) for safe bridge formation.

For engineers reviewing the SN754410NE datasheet, SN754410NE pinout, SN754410NE application, or SN754410NE equivalent, key selection considerations include per-channel 1-A continuous current capability, dual-supply architecture (VCC1/VCC2), PDIP-16 thermal performance (RθJA = 60°C/W), and enable-pair control logic for full-H bridge implementation in motion control systems.

Technical Context

The SN754410NE implements four independent half-H drivers grouped into two enable-controlled pairs: channels 1–2 share 1,2EN, and channels 3–4 share 3,4EN. Each output features diode-clamped totem-pole structure with Darlington sink and pseudo-Darlington source, enabling bidirectional current flow through inductive loads without external flyback diodes.

It uses separate supply domains: VCC1 (4.5–5.5 V) powers input logic and level translation, minimizing ICC1 dissipation, while VCC2 (4.5–36 V) supplies output stages. Thermal shutdown activates at TJ ≥ 150°C, and sink/source interlock prevents shoot-through during switching transitions.

Key Specifications

Pinout & Package

SN754410NE is housed in a 16-pin plastic dual-in-line package (PDIP-NE) with 19.80 mm × 6.35 mm body size and integrated heat-sink ground pins (pins 4, 5, 12, 13) requiring multiple vias to PCB ground plane.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar half-H driver applications.

Compared with L293D, SN754410NE delivers 67% higher continuous current and superior thermal robustness in PDIP packaging; versus DRV8833, it retains legacy-compatible through-hole mounting and logic supply isolation but trades off integration density and peak current capability.

Availability

SN754410NE is available at Aetrix Electronics and suitable for DC motor control, bipolar stepper drive, latching relay actuation, industrial solenoid management, and embedded motion subsystems requiring stable component supply across extended product lifecycles.

Supply support for SN754410NE includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor company headquartered in Dallas, Texas, specializing in analog, embedded processing, and high-reliability silicon solutions for industrial, automotive, and communications markets.

The SN754410NE belongs to TI's legacy line of high-current interface drivers, engineered specifically for robust, cost-effective control of inductive loads in industrial automation, motion control, and electro-mechanical systems operating from −40°C to +85°C.

FAQ

What is the maximum continuous output current per channel of the SN754410NE?

The SN754410NE supports ±1 A continuous output current per channel under recommended operating conditions (TA ≤ 85°C, VCC2 ≤ 36 V). This rating assumes proper PCB thermal design - including multiple vias to ground plane on pins 4, 5, 12, and 13 - and derating above 25°C ambient at 16.6 mW/°C. Peak current capability is ±2 A, but only for short-duration pulses.

Does the SN754410NE require external flyback diodes when driving inductive loads?

No, the SN754410NE does not require external flyback diodes. It integrates internal clamp diodes on all four outputs (1Y–4Y), explicitly designed to suppress inductive kickback from relays, solenoids, DC motors, and stepper motor windings. This feature is confirmed in the Functional Block Diagram and Feature Description sections of the official SLRS007C datasheet.

Can the SN754410NE be used with 3.3-V microcontroller logic levels?

Yes, the SN754410NE accepts 3.3-V logic inputs. Its inputs are TTL- and CMOS-compatible with VIH(min) = 2.0 V and VIL(max) = 0.8 V, making them fully compatible with 3.3-V MCU GPIOs. However, VCC1 must still be supplied with 4.5–5.5 V to ensure correct internal level translation and noise immunity - the logic supply voltage is independent of input signal voltage.

How does the enable architecture of the SN754410NE support H-bridge formation?

The SN754410NE uses paired enable inputs: 1,2EN controls channels 1 and 2, while 3,4EN controls channels 3 and 4. By coordinating data inputs (e.g., 1A=H/2A=L and 3A=L/4A=H) with respective enables, each pair forms one half of an H-bridge. Two SN754410NE devices can construct a full 4-quadrant drive, or a single SN754410NE can drive two independent loads or one 2-phase stepper motor.

What thermal protection mechanisms are built into the SN754410NE?

The SN754410NE includes thermal shutdown circuitry that disables all outputs and forces them into high-impedance state when the virtual junction temperature (TJ) reaches approximately 150°C. This protection is automatic and self-resetting upon cooling. The device's RθJA of 60°C/W (PDIP-16) and specified continuous power dissipation limit of 2075 mW at 25°C define its safe operating envelope - exceeding these requires thermal derating or enhanced heatsinking.