NXP Semiconductors 74ALVC08D,112

Overview

74ALVC08D from Nexperia is a quad 2-input AND gate IC with Schmitt-trigger inputs, IOFF partial power-down protection, and operation across 1.65 V to 3.6 V supply. It delivers propagation delay as low as 1.0 ns at 2.7 V, supports -40 °C to +125 °C ambient, and features overvoltage-tolerant inputs up to 3.6 V - used in level-shifting logic interfaces within industrial control I/O modules.

For engineers reviewing the 74ALVC08D datasheet, 74ALVC08D pinout, 74ALVC08D application, or 74ALVC08D equivalent, this page provides verified pin functions, thermal-safe SO14 package details, static/dynamic electrical specs per JEDEC standards, and real-world substitution guidance for 1.8 V/2.5 V/3.3 V mixed-voltage logic systems.

Technical Context

This device implements four independent AND gates with Schmitt-trigger input thresholds, enabling robust noise immunity against slow-rising signals in noisy industrial environments. Each gate exhibits identical logic behavior defined by H/L input combinations yielding L/L/L/H output states.

The IOFF circuit actively disables outputs when VCC = 0 V, blocking backflow current up to ±50 mA and meeting JESD78 Class II.A latch-up immunity (>250 mA). Input clamping and ESD protection (HBM >2000 V, CDM >1000 V) are integrated without external components.

Key Specifications

Pinout & Package

74ALVC08D uses the SO14 (SOT108-1) plastic small outline package: 14-pin, 3.9 mm body width, 1.27 mm lead pitch, gull-wing leads, RoHS-compliant matte tin finish.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad 2-input AND gate applications.

Compared with SN74LVC08APWR and 74AUP1G08GW,125, the 74ALVC08D uniquely combines Schmitt-trigger noise immunity, IOFF-enabled partial power-down, and guaranteed -40 °C to +125 °C operation - making it the sole option for ruggedized logic gating in thermally demanding, mixed-voltage, and safety-critical embedded systems.

Availability

74ALVC08D is available at Aetrix Electronics and suitable for industrial PLC I/O modules, automotive body control units, medical infusion pump logic, and test equipment signal conditioning requiring stable component supply across extended temperature and mixed-voltage environments.

Supply support for 74ALVC08D 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 focused on essential efficiency technologies - delivering high-performance, reliable, and scalable logic, power, and analog solutions for automotive, industrial, and consumer markets.

The 74ALVC series targets advanced low-voltage logic applications requiring robust noise immunity, partial power-down capability, and seamless interoperability across 1.65 V to 3.6 V supply domains.

FAQ

Does 74ALVC08D support true bidirectional signal routing?

No. The 74ALVC08D is a unidirectional AND gate with dedicated input (A/B) and output (Y) pins. It does not implement bus transceiver functionality, tri-state control, or direction-select logic. Its IOFF feature only disables output drivers during power-down - it does not enable reverse signal flow or data latching.

Can 74ALVC08D operate reliably at 1.65 V while driving a 15 pF load?

Yes. At VCC = 1.65 V, the device guarantees VOL ≤ 0.35 × VCC (≤0.58 V) with 6 mA sink current and tpd ≤ 5.3 ns into a 30 pF load. Driving 15 pF - well below the rated 30 pF test condition - maintains timing margin and output voltage compliance across the full -40 °C to +125 °C range.

Is the exposed pad on the DHVQFN package (74ALVC08BQ) required to be soldered?

No. Per datasheet section 5.1, the exposed pad in SOT762-1 (DHVQFN14) is not electrically connected and has no mechanical requirement for soldering. If soldered, it must remain floating or connect to GND - but this applies only to the BQ variant, not the SO14-packaged 74ALVC08D.

How does the Schmitt-trigger input improve performance in sensor interface circuits?

Schmitt-trigger inputs provide hysteresis (typically ~0.3 V at 3.3 V), eliminating multiple transitions caused by slow-rising or noisy signals from resistive sensors, thermistors, or mechanical switches. This prevents false triggering in edge-sensitive logic without requiring external RC filtering or firmware debouncing routines.