Texas Instruments SN74LVC3G07QDCURQ1

Overview

SN74LVC3G07QDCURQ1 from Texas Instruments is an automotive-qualified triple buffer/driver IC with open-drain outputs, designed for 1.65-V to 5.5-V VCC operation. It delivers ±24-mA sink drive at 3.3 V, supports partial-power-down via Ioff (±10 µA), and achieves 3.7 ns max propagation delay at 3.3 V - enabling wired-OR logic in automotive body control modules.

For engineers reviewing the SN74LVC3G07QDCURQ1 datasheet, SN74LVC3G07QDCURQ1 pinout, SN74LVC3G07QDCURQ1 application, or SN74LVC3G07QDCURQ1 equivalent, key selection criteria include open-drain compatibility with 5.5-V tolerant inputs, Ioff-enabled hot-swap capability, automotive temperature range (–40°C to 125°C), and VSSOP-8 package footprint constraints.

Technical Context

This device implements three independent noninverting buffers, each with an open-drain output stage capable of sinking up to 32 mA at 4.5 V. Its Ioff circuitry actively disables outputs during power-down, blocking reverse current flow when VCC = 0 V while inputs/outputs remain biased up to 5.5 V.

Input thresholds are voltage-ratio-based (VIH = 0.7×VCC at 4.5–5.5 V; VIL = 0.3×VCC), ensuring robust noise immunity across supply voltages. The 3.3-V typical VOL of 0.4 V at 24-mA load and 0.65 V at 125°C confirms stable low-state performance under thermal stress.

Key Specifications

Pinout & Package

VSSOP-8 (DCU) package: 2.3-mm × 2.0-mm body, 0.5-mm lead pitch, 0.9-mm max height, exposed pad not present, RoHS-compliant NIPDAU finish, MSL Level-1.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar open-drain buffer applications.

Compared with SN74LVC2G07QDCURQ1 and NC7SZ07P5X, the SN74LVC3G07QDCURQ1 uniquely delivers three automotive-grade open-drain buffers in a space-constrained VSSOP-8, enabling consolidated wake-up, LED, and bus-control functions without compromising AEC-Q100 compliance or Ioff protection.

Availability

SN74LVC3G07QDCURQ1 is available at Aetrix Electronics and suitable for automotive body control units, infotainment system interfaces, and ADAS sensor interface modules requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for SN74LVC3G07QDCURQ1 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 automotive electronics with over 50 years of industry leadership.

The SN74LVC3G07QDCURQ1 belongs to TI's LVC logic family - engineered for low-voltage, high-speed automotive applications demanding robustness, low power, and seamless voltage-domain interoperability.

FAQ

What is the maximum sink current supported by each output of the SN74LVC3G07QDCURQ1?

Each output of the SN74LVC3G07QDCURQ1 supports up to 32 mA sink current at VCC = 4.5 V, as specified in the Electrical Characteristics table. At 3.3 V, the rated sink current is 24 mA, and at 2.3 V it is 8 mA. These values reflect guaranteed minimum drive capability across the full operating temperature range (–40°C to 125°C), making the SN74LVC3G07QDCURQ1 suitable for driving LEDs, MOSFET gates, or pull-up networks in automotive environments.

Does the SN74LVC3G07QDCURQ1 support partial-power-down operation, and how does it work?

Yes, the SN74LVC3G07QDCURQ1 supports partial-power-down via its Ioff feature. When VCC = 0 V, the Ioff circuitry disables all outputs, limiting input/output leakage to ±10 µA maximum - preventing damaging back-current flow from live inputs or pull-ups into the unpowered device. This behavior is explicitly verified across –40°C to 125°C and is critical for hot-swap and low-power sleep modes in automotive ECUs where the SN74LVC3G07QDCURQ1 may remain biased while its host domain is powered down.

Can the SN74LVC3G07QDCURQ1 interface directly with 5-V logic systems?

Yes, the SN74LVC3G07QDCURQ1 features 5.5-V tolerant inputs - meaning all A-inputs accept voltages from 0 V to 5.5 V regardless of VCC setting (1.65 V to 5.5 V). This allows direct connection to 5-V microcontrollers, sensors, or legacy peripherals without external level shifters. However, outputs remain open-drain and require external pull-ups referenced to the desired high-voltage rail (e.g., 5 V), so the SN74LVC3G07QDCURQ1 itself does not generate 5-V logic levels but safely sinks current from them.

What is the propagation delay of the SN74LVC3G07QDCURQ1 at 3.3-V operation?

The maximum propagation delay (tpd) of the SN74LVC3G07QDCURQ1 is 3.7 ns at VCC = 3.3 V, TA = 25°C, with CL = 50 pF and RL = 500 Ω, as measured per JEDEC standards. Typical tpd is 3.0 ns under the same conditions. This delay remains stable across temperature (–40°C to 125°C) and supply variation (±0.3 V), enabling precise timing in automotive serial control paths where the SN74LVC3G07QDCURQ1 buffers clock or enable signals.

Is the SN74LVC3G07QDCURQ1 pin-compatible with other members of the SN74LVC3Gxx series?

No - the SN74LVC3G07QDCURQ1 has a unique pinout optimized for triple open-drain buffering (1A/1Y, 2A/2Y, 3A/3Y, GND, VCC), differing from inverters (e.g., SN74LVC3G04), NANDs (e.g., SN74LVC3G00), or Schmitt-trigger variants. While all SN74LVC3Gxx devices use the VSSOP-8 (DCU) package, pin assignments are function-specific and not interchangeable. Substituting another SN74LVC3Gxx part without verifying pin mapping will result in incorrect logic behavior or damage.