Nexperia USA Inc. 74AHC86BQ-Q100X

Overview

74AHC86BQ-Q100 from Nexperia is a quad 2-input EXCLUSIVE-OR gate in DHVQFN14 package, qualified to AEC-Q100 Grade 1 for automotive use. It operates from 2.0 V to 5.5 V, features overvoltage-tolerant inputs up to 5.5 V, Schmitt-trigger inputs, and delivers balanced propagation delays as low as 3.4 ns (VCC = 5.0 V, CL = 15 pF). It serves as a logic-level translator and combinatorial decision element in body control modules and sensor interface circuits.

For engineers reviewing the 74AHC86BQ-Q100 datasheet, 74AHC86BQ-Q100 pinout, 74AHC86BQ-Q100 application, or 74AHC86BQ-Q100 equivalent, key selection criteria include its automotive qualification, CMOS input compatibility, 125 °C ambient operation, and side-wettable flank package enabling AOI-capable solder joint inspection.

Technical Context

This device implements four independent XOR gates with identical truth table behavior: output HIGH only when inputs differ. Each gate exhibits Schmitt-trigger hysteresis on both inputs, enhancing noise immunity in noisy automotive environments.

It supports mixed-voltage interfacing via overvoltage-tolerant inputs-accepting up to 5.5 V regardless of VCC-and maintains rail-to-rail output swing. Propagation delay symmetry (tPLH ≈ tPHL) ensures minimal duty-cycle distortion in clocked logic paths.

Key Specifications

Pinout & Package

DHVQFN14 (SOT762-1) package: 2.5 mm × 3.0 mm × 0.85 mm body, no leads, exposed thermal pad (non-electrical, optional GND connection), side-wettable flanks for AOI.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74AHCT86BQ-Q100, the original part offers superior noise immunity and lower static current in 3.3 V systems, while SN74LVC2G86DCUR trades qualification and inspection capability for space savings-making it unsuitable for production automotive PCBs.

Availability

74AHC86BQ-Q100 is available at Aetrix Electronics and suitable for automotive body electronics, sensor interface modules, and lighting control systems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74AHC86BQ-Q100 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 high-volume, high-reliability logic, discrete, and MOSFET solutions, with leadership in automotive-qualified components.

The 74AHC-Q100 series delivers automotive-grade variants of industry-standard logic functions, designed specifically for robust operation in harsh vehicle environments including engine bays and chassis modules.

FAQ

Is the exposed thermal pad on the DHVQFN14 package electrically connected?

No-the thermal pad (Pin 1 index area) has no electrical function. Nexperia specifies it may remain floating or be connected to GND if soldered, but imposes no mechanical or electrical requirement for attachment. Its primary role is thermal conduction, not signal integrity or grounding.

Can 74AHC86BQ-Q100 interface directly with 5 V TTL outputs?

Yes, but only in limited cases: its overvoltage-tolerant inputs accept 5 V signals safely, however its CMOS input thresholds (VIH ≈ 3.85 V at VCC = 5.5 V) may not reliably recognize marginal TTL HIGH levels (2.4 V min). For guaranteed interoperability, use 74AHCT86BQ-Q100 instead, which has TTL-compatible input thresholds.

What is the maximum recommended output load capacitance?

The datasheet characterizes performance up to 50 pF (CL), with propagation delay increasing from 3.4 ns to 4.8 ns (VCC = 5.0 V). Driving >50 pF is possible but degrades speed and increases ground bounce; for loads exceeding 50 pF, add series termination or buffer stages to maintain signal integrity and timing margins.

Does this device support hot insertion or live insertion into powered systems?

No-74AHC86BQ-Q100 is not hot-swap rated. Absolute maximum ratings specify VI and VCC limits, but the device lacks bus-hold, Ioff, or power-off protection circuitry. Applying input signals before VCC stabilization risks latch-up or undefined states; always power VCC before asserting inputs in system design.