Nexperia USA Inc. 74AHCT86PW,118

Overview

74AHCT86PW,118 from Nexperia is a quad 2-input EXCLUSIVE-OR gate in TSSOP14 package, designed for digital logic translation and signal-level decision circuits in mixed-voltage systems. It operates from 4.5 V to 5.5 V, features TTL-compatible inputs, 8.5 ns max propagation delay at 5 V/50 pF, and overvoltage-tolerant inputs up to 5.5 V - enabling direct interfacing between 3.3 V logic and 5 V legacy buses in industrial control I/O modules.

For engineers reviewing the 74AHCT86PW,118 datasheet, 74AHCT86PW,118 pinout, 74AHCT86PW,118 application, or 74AHCT86PW,118 equivalent, key selection criteria include input voltage compatibility (TTL-level), guaranteed operation up to +125 °C, output drive strength (±8 mA), Schmitt-trigger input hysteresis for noise immunity, and pin-for-pin compatibility across AHC/AHCT families in TSSOP14.

Technical Context

This device implements four independent XOR gates with identical truth table behavior: output HIGH only when inputs differ. Each gate has TTL-level input thresholds (VIH ≥ 2.0 V, VIL ≤ 0.8 V at VCC = 4.5–5.5 V) and CMOS-compatible outputs capable of driving ±8 mA loads.

The internal structure uses silicon-gate CMOS technology with Schmitt-trigger inputs on all channels, providing hysteresis to suppress noise-induced switching. Overvoltage tolerance (up to 5.5 V on inputs regardless of VCC) enables safe level-shifting without external resistors in 3.3 V → 5 V or 5 V → 3.3 V bidirectional signal paths.

Key Specifications

Pinout & Package

TSSOP14 package (SOT402-1): 4.4 mm body width, 0.65 mm lead pitch, 14-terminal surface-mount outline optimized for high-density PCB layouts and automated placement.

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 74AHCT86PW,118 offers optimal balance of TTL interoperability, thermal robustness (+125 °C), and quad integration - making it the default choice for industrial control and automotive body electronics where legacy interface compliance and reliability outweigh raw speed or miniaturization.

Availability

74AHCT86PW,118 is available at Aetrix Electronics and suitable for industrial PLC I/O modules, automotive BCM subsystems, medical infusion pump motor controllers, and automated test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74AHCT86PW,118 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 logic, analog, and discrete components with emphasis on reliability and manufacturability.

The 74AHCT series targets industrial and automotive applications requiring robust TTL-compatible logic with extended temperature operation and high ESD resilience - specifically engineered for mission-critical control and interface functions.

FAQ

Can 74AHCT86PW,118 operate reliably at 3.3 V supply?

No. The 74AHCT86PW,118 is specified only for 4.5 V to 5.5 V operation. At 3.3 V, input thresholds (VIH ≥ 2.0 V) may not be met consistently, and output drive strength degrades significantly. For 3.3 V systems, use the pin-compatible 74AHC86PW,118 variant instead, which supports 2.0–5.5 V supply.

What is the maximum capacitive load this device can drive while maintaining specified timing?

The 74AHCT86PW,118 maintains its 9.0 ns max propagation delay specification up to 50 pF load capacitance at VCC = 5 V. Driving >50 pF increases tpd nonlinearly and may cause marginal setup/hold timing in synchronous systems; for >75 pF loads, add a series resistor or buffer stage.

Does this device require external pull-up or pull-down resistors on unused inputs?

Yes. Unused inputs must be terminated to VCC or GND via ≤10 kΩ resistors. Floating inputs cause increased ICC, unpredictable output states, and potential latch-up due to internal node biasing instability - especially critical in high-temperature environments.

How does the Schmitt-trigger input affect signal integrity in noisy environments?

The Schmitt-trigger action provides ~0.3 V hysteresis, meaning the input must transition fully across that window to change state. This rejects noise spikes <15 ns wide and prevents chatter on slow-rising edges (e.g., from long PCB traces or optocoupler outputs), ensuring clean, single-event detection without software debouncing.