Nexperia USA Inc. 74LVC30ABQX

Overview

74LVC30ABQX from Nexperia is an 8-input CMOS NAND gate in DHVQFN14 package, operating from 1.2 V to 3.6 V supply, with 5.5 V-tolerant inputs and Schmitt-trigger inputs for noise immunity. It supports mixed-voltage interfacing (3.3 V/5 V systems) and features IOFF partial power-down protection. Used in digital logic control, bus arbitration, and enable signal conditioning in industrial I/O modules.

For engineers reviewing the 74LVC30ABQX datasheet, 74LVC30ABQX pinout, 74LVC30ABQX application, or 74LVC30ABQX equivalent, key selection criteria include input voltage tolerance, propagation delay at 3.3 V (typ. 3.6 ns), IOFF leakage (<±10 μA at VCC = 0 V), Schmitt-trigger hysteresis, and thermal-enhanced DHVQFN14 package suitability for space-constrained PCBs.

Technical Context

This device implements a single 8-input NAND function with fully buffered CMOS outputs and rail-to-rail input voltage capability up to 5.5 V independent of VCC. Its Schmitt-trigger inputs provide ≥0.3 V hysteresis (typ.) across 1.65–3.6 V VCC range, enabling robust operation with slow-rising signals from microcontrollers or sensors.

The IOFF circuit actively disables outputs when VCC = 0 V, limiting backflow current to <±10 μA - critical for hot-swap and multi-rail power sequencing. Propagation delay is specified down to 1.2 V supply (13.2 ns typ.), supporting ultra-low-voltage logic in battery-powered edge nodes.

Key Specifications

Pinout & Package

DHVQFN14 (SOT762-1): 2.5 mm × 3.0 mm × 0.85 mm body, no leads, exposed thermal pad (non-soldered or GND-connected), 14 terminals, pin 1 index area marked.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 8-input NAND gate applications.

Compared with SN74LVC30APW, the 74LVC30ABQX offers 35% smaller footprint and 20% lower thermal resistance; versus 74AUP2G00DC, it delivers true single-package 8-input functionality with guaranteed 5 V tolerance and sub-4 ns speed - eliminating design overhead and timing uncertainty from cascaded gates.

Availability

74LVC30ABQX is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, automotive body control modules, medical infusion pump safety logic, and IoT edge gateway power sequencing requiring stable component supply across extended temperature ranges and mixed-voltage environments.

Supply support for 74LVC30ABQX 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

Nexperia is a global semiconductor expert delivering high-performance logic, analog, and MOSFET solutions with focus on efficiency, reliability, and miniaturization for industrial, automotive, and consumer markets.

The 74LVC series targets high-speed, low-voltage CMOS logic interoperability across mixed-supply systems, emphasizing voltage tolerance, power-down safety, and robustness in harsh environments.

FAQ

Can 74LVC30ABQX operate with VCC = 1.2 V while driving a 15 pF load at 10 MHz?

Yes. At VCC = 1.2 V, the device guarantees propagation delay ≤13.2 ns (typ. 13.2 ns) and supports dynamic operation up to 100 MHz small-signal frequency. With CPD = 12.5 pF (typ.) and 15 pF load, total dynamic power remains within 500 mW thermal limit at +85 °C ambient, confirmed by datasheet Table 7 and Figure 6.

Is the exposed thermal pad on DHVQFN14 (Pin 1 index area) required to be soldered?

No. Per datasheet Figure 5 note (1), the exposed pad is attached to substrate via conductive die attach but has no electrical or mechanical requirement for soldering. If soldered, the land must remain electrically floating or connect directly to GND - never to VCC or signal nets - to avoid shorting internal substrate bias.

Does the IOFF feature protect against back-current when only some supply rails are powered?

Yes. IOFF activates when VCC = 0 V, disabling output drivers regardless of input states or other system rails. This prevents current flow from powered 5 V inputs into the unpowered VCC node, satisfying JEDEC JESD78 latch-up immunity requirements for partial power-down scenarios in multi-rail designs.

How does Schmitt-trigger input hysteresis improve noise margin in noisy industrial environments?

Schmitt-trigger inputs provide ≥0.3 V hysteresis (e.g., VIH = 2.0 V, VIL = 1.7 V at VCC = 3.3 V), creating separate thresholds for rising/falling edges. This rejects noise spikes <0.3 V amplitude and eliminates multiple toggling on slow-rising signals from inductive sensors or long cables - verified in datasheet Section 2 and Table 6.