Nexperia USA Inc. 74AHCT86BQ-Q100X

Overview

74AHCT86BQ-Q100 from Nexperia is an automotive-grade quad 2-input EXCLUSIVE-OR gate in DHVQFN14 package, operating from -40 °C to +125 °C with TTL-compatible inputs, 4.5 V–5.5 V supply range, and propagation delay ≤9.0 ns (CL = 50 pF). It serves as a logic-level translator and combinatorial decision element in vehicle body control modules.

For engineers reviewing the 74AHCT86BQ-Q100 datasheet, 74AHCT86BQ-Q100 pinout, 74AHCT86BQ-Q100 application, or 74AHCT86BQ-Q100 equivalent, this page delivers verified functional behavior, AEC-Q100 Grade 1 qualification status, overvoltage-tolerant input capability up to 5.5 V, Schmitt-trigger input action, and DHVQFN thermal performance data for automotive PCB layout and signal integrity validation.

Technical Context

This device implements four independent XOR gates with identical truth table behavior (L/L→L, L/H→H, H/L→H, H/H→L) and balanced tPLH/tPHL propagation delays. Each input features Schmitt-trigger action for noise immunity and overvoltage tolerance to 5.5 V, enabling mixed-voltage interface between 3.3 V and 5 V domains.

It operates under AEC-Q100 Grade 1 conditions (-40 °C to +125 °C), supports 8 mA output drive at VCC = 4.5 V, and exhibits low static current (≤40 μA at VCC = 5.5 V) with CPD = 12.0 pF for dynamic power estimation. Input thresholds are fixed at VIH = 2.0 V min and VIL = 0.8 V max for TTL compatibility.

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74AHCT86BQ-Q100, the 74AHC86BQ-Q100 offers lower power but requires stricter input voltage compliance, while the SN74LVC2G86DCUR provides faster speed in smaller form factor but lacks automotive qualification and thermal rating - making the 74AHCT86BQ-Q100 the sole choice for AEC-Q100-compliant, TTL-compatible, quad-XOR functions in under-hood environments.

Availability

74AHCT86BQ-Q100 is available at Aetrix Electronics and suitable for automotive body control units, powertrain sensor interfaces, LED lighting sequencers, and diagnostic communication interfaces requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74AHCT86BQ-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 delivering high-performance, reliable discrete, logic, and MOSFET devices optimized for efficiency-critical applications.

The 74AHCT series targets automotive and industrial systems requiring TTL-compatible logic with AEC-Q100 qualification, robust noise immunity, and mixed-voltage interoperability - especially where legacy 5 V infrastructure coexists with newer low-voltage subsystems.

FAQ

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

No. The exposed pad (Pin 1 index area) has no electrical function per datasheet note: "This is not a ground pin. There is no electrical or mechanical requirement to solder the pad." If soldered, it must remain floating or connect solely to GND - never to VCC or signal nets - to avoid parasitic coupling or thermal stress-induced delamination.

Can 74AHCT86BQ-Q100 operate with VCC = 3.3 V?

No. Per Table 5, the 74AHCT86-Q100 variant requires VCC = 4.5 V to 5.5 V for guaranteed TTL-compatible input thresholds (VIH = 2.0 V min, VIL = 0.8 V max). At 3.3 V, input recognition fails - use 74AHC86BQ-Q100 instead for 3.3 V systems, or add level translation.

What is the maximum capacitive load supported while maintaining specified tPD?

The datasheet specifies tPD values for CL = 15 pF and CL = 50 pF only. At CL = 50 pF, tPD ≤ 9.0 ns (max) is guaranteed. Driving >50 pF increases delay nonlinearly and may exceed timing margins - for loads >50 pF, add a buffer stage or verify timing with actual board parasitics in SPICE simulation.

Does this device support hot-swap or live-insertion?

No. The device lacks powered-off protection circuitry. Applying input signals while VCC is absent or ramping violates Absolute Maximum Ratings (VI must stay within -0.5 V to VCC + 0.5 V). Use series resistors or dedicated hot-swap controllers if insertion into live backplanes is required.