NXP Semiconductors 74AHCT86D,112

Overview

74AHCT86D,112 from Nexperia is a quad 2-input EXCLUSIVE-OR gate in SO14 package, designed for digital logic translation in mixed-voltage systems. It features TTL-compatible inputs (VIH = 2.0 V min, VIL = 0.8 V max at VCC = 4.5–5.5 V), overvoltage-tolerant inputs up to 5.5 V, and operates across -40 °C to +125 °C. Used in bus arbitration, parity generation, and address decoding circuits where level-shifting between 3.3 V and 5 V domains is required.

For engineers reviewing the 74AHCT86D,112 datasheet, 74AHCT86D,112 pinout, 74AHCT86D,112 application, or 74AHCT86D,112 equivalent, key selection criteria include input voltage compatibility with legacy TTL systems, propagation delay under 9.0 ns at 5 V/50 pF load, thermal stability over extended temperature range, and SO14 package suitability for industrial PCB layouts requiring proven reliability and reflow compatibility.

Technical Context

This device implements four independent XOR gates with Schmitt-trigger inputs for noise immunity and balanced tPLH/tPHL propagation delays. Each gate accepts two TTL-level inputs and delivers CMOS-level outputs, enabling bidirectional voltage translation without external biasing.

The SO14 package (SOT108-1) supports 14-pin routing with standard 1.27 mm pitch, and internal ESD protection meets HBM >2000 V and CDM >1000 V per JEDEC JS-001/JS-002. Latch-up immunity exceeds 100 mA per JESD78 Class II Level A.

Key Specifications

Pinout & Package

74AHCT86D,112 uses the SO14 plastic small outline package (SOT108-1), 3.9 mm body width, 14-lead, 1.27 mm pitch, with gull-wing leads suitable for automated SMT assembly and IPC-A-610 Class 2/3 compliance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74AHC86D,112 and SN74LVC2G86DCUR, the 74AHCT86D,112 uniquely bridges legacy TTL logic while maintaining robustness in extended-temperature industrial settings - its TTL input compatibility and SO14 mechanical reliability make it irreplaceable in retrofit and long-lifecycle deployments.

Availability

74AHCT86D,112 is available at Aetrix Electronics and suitable for industrial control panels, automotive body electronics, and telecommunications infrastructure requiring stable component supply across extended temperature ranges and multi-year production cycles.

Supply support for 74AHCT86D,112 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, discrete, and MOSFET solutions with emphasis on reliability, energy efficiency, and manufacturability.

The 74AHCT series targets industrial and automotive applications demanding TTL-compatible interface logic with extended temperature operation and robust ESD/latch-up performance - designed specifically for system integration where interoperability and longevity are critical.

FAQ

Can 74AHCT86D,112 operate with a 3.3 V supply?

No - the 74AHCT86D,112 is specified only for 4.5 V to 5.5 V operation. Its TTL input thresholds require minimum 2.0 V VIH, which cannot be reliably met below 4.5 V supply due to reduced noise margin and output swing. For 3.3 V systems, use the pin-compatible 74AHC86D,112 variant instead.

What is the maximum capacitive load this device can drive reliably?

The 74AHCT86D,112 is characterized up to 50 pF load capacitance with guaranteed 9.0 ns max propagation delay at VCC = 5 V. Driving >50 pF may increase delay nonlinearly and risk output waveform degradation; for heavier loads, add a buffer stage or reduce trace length and stubs to maintain signal integrity.

Does the SO14 package require thermal pad soldering?

No - the SOT108-1 (SO14) package has no exposed thermal pad. Thermal dissipation relies on copper pour connected to pins 7 (GND) and 14 (VCC). For continuous operation near Ptot = 500 mW, ensure ≥25 mm² of 2-oz copper on both top and bottom layers connected to these pins via multiple vias.

How does overvoltage tolerance work on the inputs?

Inputs tolerate up to 5.5 V regardless of VCC because internal clamping diodes route excess voltage to VCC or GND rails. This allows safe connection to 5 V buses while VCC is powered at 3.3 V - but only if external current limiting (≥1 kΩ series resistor) is used to keep IIK within ±20 mA absolute maximum rating.