Diodes Incorporated 74LVC1G06QSE-7

Overview

74LVC1G06QSE-7 from Diodes Incorporated is an automotive-grade single inverter logic gate with open-drain output, designed for level-shifting and signal isolation in mixed-voltage systems. It operates from 1.65V to 5.5V, tolerates 5.5V inputs regardless of V_CC, supports IOFF partial power-down, and delivers 32mA sink current at 5V. Used in AEC-Q100-compliant automotive control modules for wake-up signaling and bus arbitration.

For engineers reviewing the 74LVC1G06QSE-7 datasheet, 74LVC1G06QSE-7 pinout, 74LVC1G06QSE-7 application, or 74LVC1G06QSE-7 equivalent, key selection criteria include open-drain drive strength, IOFF leakage (<±2 µA), Grade 1 temperature range (–40°C to +125°C), input voltage tolerance, and SOT353 package compatibility with high-density PCB layouts.

Technical Context

This device implements a single CMOS inverter stage with unbuffered open-drain output, enabling wired-OR/AND logic via external pull-up. Its IOFF circuit actively disables output leakage during V_CC = 0V, preventing back-current in partial-power-down systems.

The logic function is strictly inverting (A → Y̅), with propagation delay ranging from 0.5ns (5V) to 3.0ns (1.8V) across temperature and supply conditions. Input thresholds are V_IH = 0.7×V_CC (at 4.5–5.5V) and V_IL = 0.3×V_CC, ensuring robust noise margins in noisy automotive environments.

Key Specifications

Pinout & Package

SOT353 (5-pin SC-70) package: 2.15mm × 2.1mm × 1.1mm body, 0.65mm pitch, matte tin-plated leads, moisture sensitivity level 1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with NXP 74LVC1G06GV,125 and TI SN74LVC1G06DBVR, the 74LVC1G06QSE-7 uniquely combines AEC-Q100 Grade 1 qualification, verified IOFF behavior, and SOT353's smaller footprint (2.15×2.1mm), making it optimal for space-constrained automotive modules requiring guaranteed partial-power-down integrity.

Availability

74LVC1G06QSE-7 is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC I/O modules, and USB-C dual-role port controllers requiring stable component supply, long-term lifecycle support, and AEC-Q100 traceability.

Supply support for 74LVC1G06QSE-7 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability components for automotive, industrial, and computing markets.

The 74LVC logic family targets low-voltage, mixed-supply digital interfacing with emphasis on power efficiency, voltage tolerance, and automotive qualification - specifically engineered for robust signal conditioning in harsh environments.

FAQ

Can 74LVC1G06QSE-7 drive a 5V pull-up resistor directly from a 3.3V V_CC supply?

Yes. The device's 5.5V-tolerant inputs and open-drain output allow connection to a 5V pull-up while powered from 3.3V. When Y is low, it sinks current up to 24mA at 3.3V; when high-impedance, the external pull-up sets Y to 5V. No level shifter is needed, and IOFF protects during power-down.

What is the maximum recommended pull-up resistor value for reliable 3.3V logic-low detection?

At V_CC = 3.3V and I_OL = 24mA, VOL ≤ 0.55V per datasheet. To ensure VOL < 0.8V (3.3V logic-low threshold), R_PULLUP ≤ (3.3V − 0.55V)/24mA ≈ 115Ω. For margin, use ≤100Ω with 3.3V pull-up or ≤200Ω with 5V pull-up and 3.3V logic receiver.

Does the NC pin (Pin 5) require any PCB layout treatment?

No. Pin 5 is internally unconnected. It must remain un-routed and unsoldered - no copper pour, trace, or thermal pad should contact it. Leaving it floating avoids parasitic coupling; adding solder mask coverage is acceptable but not required per Diodes' SOT353 layout guidelines.

How does IOFF behavior differ from standard high-impedance state in powered-down operation?

IOFF actively disables the output FETs when V_CC = 0V, limiting leakage to ±2µA even with 5.5V applied to Y or A. Standard high-Z states rely on passive cutoff and may allow >100µA back-current. This active blocking is critical for preventing damage or false triggering in multi-rail systems during power sequencing.