onsemi MC74HC86AFEL

Overview

MC74HC86AFEL from onsemi is a quad 2-input exclusive-OR (XOR) gate in high-performance silicon-gate CMOS technology, operating across 2.0–6.0 V supply range. It delivers 10 LSTTL load drive capability, features low input current (≤1 µA), and exhibits high noise immunity. It is used in digital logic systems for parity generation, error detection, and arithmetic circuits.

For engineers reviewing the MC74HC86AFEL datasheet, pinout, applications, or equivalent options, key selection factors include its CMOS-compatible inputs, propagation delay down to 17 ns at 6.0 V, TSSOP-14 package footprint, and guaranteed operation from −55 °C to +125 °C.

Technical Context

The MC74HC86AFEL implements four independent XOR gates with identical logic function Y = A ⊕ B = AB̅ + A̅B. Each gate has symmetrical input structure and rail-to-rail output swing compatible with CMOS, NMOS, and TTL interfaces when used with pull-up resistors.

It operates under JEDEC Standard No. 7A, supports 56-FET chip complexity (14 equivalent gates), and meets AEC-Q100 requirements when ordered with −Q suffix - though MC74HC86AFEL itself is the standard industrial-grade variant in Pb-free TSSOP-14 packaging.

Key Specifications

Pinout & Package

TSSOP-14 (Thin Shrink Small Outline Package), 4.4 mm × 5.0 mm body, 0.65 mm pitch, Pb-free, RoHS compliant, moisture sensitivity level 1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74HC86DR and 74VHC86M, the MC74HC86AFEL offers optimal balance of TSSOP-14 space efficiency, 6 V tolerance, and proven industrial temperature performance - making it preferred for compact, wide-supply embedded control modules.

Availability

MC74HC86AFEL is available at Aetrix Electronics and suitable for industrial automation, test instrumentation, and automotive body electronics requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.

Supply support for MC74HC86AFEL 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

onsemi (formerly ON Semiconductor) is a global semiconductor supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.

The MC74HC86AFEL belongs to the 74HC high-speed CMOS logic family, designed for robust, low-power digital interfacing in harsh environments where reliability and wide supply tolerance are mandatory.

FAQ

What logic family does the MC74HC86AFEL belong to, and how does it differ from the HCT variant?

The MC74HC86AFEL belongs to the 74HC (High-Speed CMOS) logic family, featuring CMOS-compatible inputs and a 2.0–6.0 V operating range. Unlike the MC74HCT86A, which has TTL-compatible inputs and a narrower 4.5–5.5 V range, the MC74HC86AFEL supports direct connection to both CMOS and LSTTL outputs via pull-up resistors - making it more flexible in mixed-logic systems.

Can the MC74HC86AFEL operate reliably at 3.3 V, and what are the key timing parameters at that voltage?

Yes, the MC74HC86AFEL is fully specified at 3.0 V and 3.3 V nominal operation. At V_CC = 3.0 V, maximum propagation delay is 80 ns and output transition time is 30 ns over −55 °C to +125 °C. These values ensure compatibility with 3.3 V microcontrollers and FPGAs while maintaining noise margins above 1.0 V.

Is the MC74HC86AFEL pin-compatible with older 74LS86 devices, and what design considerations apply?

Yes, the MC74HC86AFEL is pinout-identical to the 74LS86. However, because LS devices draw significant input current (≈1.6 mA low), pull-up resistors (~1–10 kΩ) must be added when driving MC74HC86AFEL inputs from LS outputs to ensure valid high-level recognition - unlike direct connection possible with other HC devices.

What is the maximum output current rating per pin for the MC74HC86AFEL, and how does it affect fan-out capability?

The MC74HC86AFEL specifies ±25 mA DC output current per pin. At V_CC = 6.0 V and room temperature, it can source/sink up to 10 LSTTL loads (each requiring ~0.4 mA high / 8 mA low). This fan-out capacity remains usable across the full temperature range, though derating to 8 loads is recommended above 85 °C for long-term reliability.

Does the MC74HC86AFEL require external decoupling, and what capacitor value is recommended?

Yes, each MC74HC86AFEL requires local V_CC–GND decoupling. A 100 nF X7R ceramic capacitor placed within 3 mm of pins 14 (V_CC) and 7 (GND) is recommended. For boards with multiple units or high-frequency switching, add a 1–10 µF bulk capacitor per 5–10 ICs to suppress supply rail noise and prevent logic glitches.