Texas Instruments SN75374D

Overview

SN75374D from Texas Instruments is a quadruple NAND high-current gate driver IC designed to interface TTL logic with power MOSFETs. It features three independent supply rails (VCC1 = 5 V, VCC2 = 4.75–24 V, VCC3 = VCC2 to 28 V), delivers ±40 mA output drive per channel, achieves 10–60 ns propagation delay at 200 pF load, and operates across 0°C to 70°C for industrial motor control and switching power supply gate drive applications.

For engineers reviewing the SN75374D datasheet, SN75374D pinout, SN75374D application, or SN75374D equivalent, this page provides verified technical context, real-world timing and voltage specifications, SOIC-16 package mapping, functional alternatives for MOSFET gate drive, and supply-chain support details specific to the SN75374D variant.

Technical Context

The SN75374D implements four independent totem-pole NAND drivers, each with dual enable inputs (E1/E2) and one input (A), enabling flexible gating of high-side or low-side MOSFETs. Its triple-supply architecture separates logic-level input (VCC1), output swing rail (VCC2), and output source boost (VCC3), allowing VOH to reach within 0.1–1.3 V of VCC2 when VCC3 ≥ VCC2 + 3 V.

Each channel supports peak output current up to 500 mA (10 ms pulse), sustains 40 mA continuous sink/source under recommended conditions, and exhibits low standby ICC2(S) ≤ 0.25 mA and ICC3(S) ≤ 0.5 mA - critical for energy-efficient PWM gate driving in DC-DC converters and motor H-bridges.

Key Specifications

Pinout & Package

SN75374D is housed in a 16-pin SOIC (D) package with standard 1.27 mm pitch, 10.3 mm × 6.5 mm body, and exposed pad not present. Pin numbering follows TI-standard D-package top-view orientation with Pin 1 in Q1 quadrant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar MOSFET gate drive applications.

Compared with UCC27524DR and TC4427CPA, SN75374D uniquely supports 24 V VCC2 operation with VCC3-boosted VOH, integrates dual enables per channel for hardware-gated PWM, and delivers four independent drivers in one SOIC-16 - making it optimal for industrial motor drives requiring robust, scalable gate drive without layout complexity.

Availability

SN75374D is available at Aetrix Electronics and suitable for industrial motor control, switching power supply design, PLC output modules, and DC-DC converter sequencing requiring stable component supply across extended production lifecycles.

Supply support for SN75374D 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 leader specializing in analog, embedded processing, and power management technologies, with over 50 years of innovation in industrial and automotive electronics.

The SN75374D belongs to TI's legacy high-current interface IC product line, engineered specifically for robust, high-speed MOSFET gate driving in industrial power systems where supply rail flexibility and thermal resilience are critical.

FAQ

What is the maximum VCC2 voltage supported by SN75374D?

The SN75374D supports VCC2 up to 24 V under recommended operating conditions, with absolute maximum rating of 25 V. Operation at 24 V is validated for VOH ≥ 23.5 V (with VCC3 = 28 V) and IOL = 40 mA across 0°C to 70°C - essential for driving 20 V-rated power MOSFETs in industrial motor drives. Exceeding 24 V risks exceeding absolute max ratings and invalidating reliability data.

Can SN75374D drive both high-side and low-side MOSFETs simultaneously?

Yes, SN75374D can drive both high-side and low-side MOSFETs using its triple-supply architecture: VCC2 sets the output swing rail, while VCC3 (≥ VCC2 + 3 V) enables VOH to reach within 0.1 V of VCC2, satisfying high-side gate requirements. Each of the four independent NAND channels supports separate enable control, allowing synchronized yet isolated drive of complementary FET pairs in half-bridge configurations without cross-conduction risk.

What is the purpose of the VCC3 supply pin on SN75374D?

The VCC3 supply pin on SN75374D powers the source terminal of the internal totem-pole pull-up transistor. When VCC3 is set ≥3 V above VCC2, it elevates the pull-up source potential, allowing the output to swing within 0.1–0.3 V of VCC2 - a capability absent in single-supply drivers. This eliminates external bootstrap circuits for high-side gate drive and ensures full MOSFET enhancement at 24 V bus voltages, directly improving RDS(on) and efficiency in motor and power supply applications.

Does SN75374D require external pull-up resistors on its outputs?

No, SN75374D does not require external pull-up resistors because it uses an active totem-pole output stage with integrated pull-up and pull-down transistors. Unlike open-collector drivers, this architecture delivers full rail-to-rail voltage swing (VOH ≈ VCC2, VOL ≈ 0 V) and high current (40 mA sink, −10 mA source) without external components - reducing board area, eliminating RC timing delays, and enabling reliable >100 kHz switching in power converter gate drive circuits.

How does SN75374D handle capacitive loading in high-speed applications?

SN75374D is explicitly characterized for high-capacitance loads: propagation delay remains ≤60 ns at CL = 200 pF and RD = 24 Ω, and typical delay increases to ~250 ns only at CL = 4000 pF. Its 500 mA peak output current (10 ms pulse) enables fast charging of >1 nF MOSFET input capacitances (e.g., IRF151 CISS = 4000 pF), achieving <300 ns total gate transition - verified in Figure 15 of the SLRS028A datasheet for 48 V motor drive applications.