Nexperia USA Inc. 74AHC86BQ,115

Overview

74AHC86BQ,115 from Nexperia is a quad 2-input CMOS EXCLUSIVE-OR gate in DHVQFN14 package, rated for -40 °C to +125 °C operation, with 2.0–5.5 V supply range, overvoltage-tolerant inputs (up to 5.5 V), and balanced propagation delays as low as 3.4 ns at VCC = 5.0 V/CL = 15 pF. It serves as a logic-level translator and combinatorial function block in mixed-voltage digital interfaces.

For engineers reviewing the 74AHC86BQ,115 datasheet, 74AHC86BQ,115 pinout, 74AHC86BQ,115 application, or 74AHC86BQ,115 equivalent, key selection criteria include input voltage tolerance, propagation delay consistency across temperature, Schmitt-trigger input hysteresis, and thermal-enhanced QFN packaging for high-density PCB layouts.

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 features Schmitt-trigger inputs for noise immunity on slow-rising signals. All inputs tolerate up to 5.5 V regardless of VCC, enabling level-shifting between 3.3 V and 5.0 V domains without external components.

It operates across two logic families: 74AHC86 uses CMOS-compatible input thresholds (VIH ≥ 0.7×VCC, VIL ≤ 0.3×VCC), while the AHCT variant (not this part) uses TTL thresholds. Propagation delay is symmetric (tPLH ≈ tPHL), and dynamic power dissipation is governed by CPD = 10.0 pF at 1 MHz.

Key Specifications

Pinout & Package

DHVQFN14 (SOT762-1) package: 2.5 mm × 3.0 mm × 0.85 mm body, no leads, exposed thermal pad (non-soldered by default), 14 terminals, terminal 1 index area marked.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74AHC86PW,118 and SN74LVC2G86DCUR, the 74AHC86BQ,115 uniquely combines quad-gate density, Schmitt-trigger inputs, 5.5 V overvoltage tolerance, and thermally optimized DHVQFN packaging - making it the only option meeting all three requirements simultaneously in industrial-grade applications.

Availability

74AHC86BQ,115 is available at Aetrix Electronics and suitable for industrial control logic, serial bus parity generation, and level-translation interface applications requiring stable component supply across extended temperature ranges.

Supply support for 74AHC86BQ,115 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 and consumer electronics.

The 74AHC series targets general-purpose high-speed CMOS logic applications, emphasizing wide supply range, low power, and robust noise immunity in space- and thermally-constrained systems.

FAQ

Is the exposed thermal pad on the DHVQFN14 package required to be soldered?

No. Per Nexperia's datasheet, the exposed pad (terminal 1 index area) has no electrical or mechanical requirement to be soldered. If soldered, it must remain floating or connect to GND - it is not internally tied to GND or any other node. Thermal performance improvement is marginal unless properly connected and heatsinked.

Can 74AHC86BQ,115 safely interface a 5.0 V microcontroller output to a 3.3 V FPGA input?

Yes. Its inputs tolerate up to 5.5 V regardless of VCC, so with VCC = 3.3 V, a 5.0 V input remains within absolute maximum ratings. The output swing will be 0 V to 3.3 V, compatible with 3.3 V CMOS inputs - making it a true unidirectional level translator without external components.

Does this device support hot-swap or live-insertion into a powered system?

No. The datasheet does not specify hot-swap capability. Input clamping current is limited to ±20 mA, and ICC can reach 75 mA under fault conditions. Power sequencing per recommended operating conditions (VCC applied before inputs) is required to prevent latch-up or overstress.

What is the significance of the "BQ" suffix in 74AHC86BQ,115?

"BQ" denotes the DHVQFN14 package (SOT762-1) per Nexperia's ordering nomenclature. It identifies the physical form factor - a 2.5 × 3.0 × 0.85 mm leadless quad flat package with thermal enhancement - distinct from "D" (SO14) and "PW" (TSSOP14) variants.