Diodes Incorporated 74AHC1G86QW5-7

Overview

74AHC1G86QW5-7 from Diodes Incorporated is an automotive-grade single 2-input positive Exclusive OR (XOR) gate in SOT25 package, operating from 2.0V to 5.5V supply, delivering ±8mA output drive at 5.0V, with AEC-Q100 Grade 1 qualification (-40°C to +125°C), and Schmitt-trigger inputs for noise-immune signal conditioning in engine control and body electronics.

For engineers reviewing the 74AHC1G86QW5-7 datasheet, 74AHC1G86QW5-7 pinout, 74AHC1G86QW5-7 application, or 74AHC1G86QW5-7 equivalent, this page delivers verified functional identity, validated pin mapping, confirmed automotive temperature performance, real-world logic timing data (tPD ≤ 8.5ns @5V/CL=15pF), and direct substitution guidance against functionally matched alternatives.

Technical Context

This device implements the Boolean function Y = A ⊕ B using CMOS AHC logic, with balanced propagation delays (tPLH ≈ tPHL) and symmetrical high/low drive strength. Its Schmitt-trigger inputs accept slow-rising signals without oscillation, enabling robust interfacing with mechanical switches or noisy sensor outputs.

All inputs tolerate voltages beyond VCC (VI up to 6.5V), supporting mixed-voltage domain translation. The push-pull output stage ensures rail-to-rail swing and eliminates need for external pull-ups, simplifying integration into 3.3V and 5V digital subsystems.

Key Specifications

Pinout & Package

SOT25 (3.0mm × 2.8mm × 1.2mm, 0.95mm lead pitch) - compact surface-mount package with exposed pad not present; moisture sensitivity level 1 per J-STD-020.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC1G86DBVR and 74AUP1G86GW,125, the 74AHC1G86QW5-7 uniquely combines AEC-Q100 Grade 1 operation, 5.5V tolerance, and Schmitt-trigger inputs - making it the only option qualified for direct integration into automotive powertrain and chassis control modules without additional protection circuitry.

Availability

74AHC1G86QW5-7 is available at Aetrix Electronics and suitable for engine control units, body control modules, ADAS camera interfaces, and industrial PLC input conditioning requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74AHC1G86QW5-7 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability components for automotive, industrial, and computing markets with ISO/TS 16949 and IATF 16949 certified facilities.

The 74AHC logic family targets automotive and industrial applications demanding wide supply voltage range, robust ESD performance, and guaranteed operation across extreme temperatures - specifically engineered for signal integrity in noisy, thermally aggressive environments.

FAQ

Is the 74AHC1G86QW5-7 pin-compatible with standard 5-pin SOT25 logic gates?

Yes - it uses the industry-standard SOT25 pinout (A-B-GND-Y-VCC), matching footprint and solder pattern of other 74AHC/74LVC single-gate devices. No PCB redesign is needed when upgrading from non-automotive equivalents, provided thermal and decoupling layout guidelines are followed.

Can unused inputs be left floating in the 74AHC1G86QW5-7?

No - per datasheet Note 7, unused inputs must be tied to VCC or GND. Floating inputs cause increased ICC, erratic output behavior, and potential latch-up due to internal parasitic transistor activation in CMOS structures.

Does the Schmitt-trigger input affect propagation delay specifications?

Yes - the datasheet specifies tPD values measured with standard CMOS input waveforms (tR/tF ≤ 3ns). With slower input edges (<100ns/V), Schmitt action introduces negligible additional delay but prevents oscillation, preserving functional correctness where timing margins are tight.

What is the maximum capacitive load the 74AHC1G86QW5-7 can drive reliably?

The device is characterized up to 50pF (tPD tested at CL = 15pF and 50pF). Driving >50pF loads increases tPD nonlinearly and may exceed recommended ICC limits; for >100pF, add a buffer stage or reduce trace length and parallel capacitance via layout optimization.