onsemi MC74AC86DR2

Overview

MC74AC86DR2 from onsemi is a quad 2-input exclusive-OR gate in high-performance silicon-gate CMOS technology, operating across 2.0–6.0 V supply range, delivering ±24 mA output drive, with propagation delays as low as 1.5 ns at 5.0 V, and used in digital logic level translation, parity generation, and arithmetic circuitry.

For engineers reviewing the MC74AC86DR2 datasheet, pinout, applications, or equivalent options, this page delivers verified electrical specs, SOIC-14 package details, functional role in combinational logic systems, and validated alternative options for design continuity.

Technical Context

The MC74AC86DR2 implements four independent XOR gates in a single monolithic CMOS IC, each accepting two logic-level inputs and producing true XOR output (Y = A ⊕ B). It supports TTL-compatible input thresholds at 5.0 V and CMOS-compatible thresholds at 3.3 V and 5.0 V, enabling interoperability across mixed-voltage logic families.

Its AC performance is characterized at CL = 50 pF, with tPLH/tPHL ≤ 9.0 ns (max) at VCC = 5.0 V and TA = −40°C to +85°C. Input leakage remains ≤ ±1.0 µA, and dynamic output current capability reaches ±75 mA under pulsed conditions, supporting transient load handling in noise-sensitive digital interfaces.

Key Specifications

Pinout & Package

MC74AC86DR2 is supplied in a 14-lead SOIC (Small Outline Integrated Circuit) package per case 751A, with 1.27 mm pitch, 8.75 mm × 3.90 mm body, and Pb-free finish. Pin 1 is marked by a beveled corner or dot; pin 7 is GND, pin 14 is VCC.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74AC86DR and 74VHC86M, the MC74AC86DR2 offers optimal balance of speed (≤9 ns), drive strength (±24 mA), and wide supply range (2–6 V), making it preferred for industrial control I/O expansion and mixed-voltage logic interfacing where timing predictability and layout compatibility are critical.

Availability

MC74AC86DR2 is available at Aetrix Electronics and suitable for industrial automation PLC modules, embedded communication interfaces, and test equipment requiring stable component supply across long production lifecycles.

Supply support for MC74AC86DR2 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 specializing in energy-efficient power, analog, sensing, and logic solutions for automotive, industrial, and cloud infrastructure markets.

The MC74AC86DR2 belongs to the 74AC logic family, engineered for high-speed, low-noise, mixed-voltage digital interfacing in industrial control, instrumentation, and communications equipment.

FAQ

What logic family does MC74AC86DR2 belong to, and how does it differ from 74ACT variants?

The MC74AC86DR2 belongs to the 74AC (Advanced CMOS) logic family, optimized for 2.0–6.0 V operation with TTL-compatible inputs at 5 V. Unlike the 74ACT variant (e.g., MC74ACT86DR2G), which mandates 4.5–5.5 V supply and offers tighter input thresholds for strict TTL interfacing, the MC74AC86DR2 supports broader voltage flexibility and lower static current, making it more suitable for mixed-supply systems. Both share identical pinout and XOR functionality.

Is MC74AC86DR2 pin-compatible with older 74LS86 or 74HC86 devices?

The MC74AC86DR2 uses the standard 14-pin SOIC footprint and matches the pinout of 74LS86 and 74HC86 - pin 1 (A1), pin 2 (B1), pin 3 (Y1), etc., with GND at pin 7 and VCC at pin 14. However, due to higher output drive (±24 mA vs. ±8 mA for LS, ±20 mA for HC) and faster switching, layout decoupling and trace routing should follow high-speed CMOS guidelines. No PCB changes are needed for footprint replacement, but signal integrity review is advised.

What is the maximum operating temperature range for MC74AC86DR2, and is it suitable for industrial environments?

The MC74AC86DR2 is rated for an operating ambient temperature range of −40°C to +85°C, fully compliant with industrial-grade requirements. Its junction temperature limit is 150°C, and thermal resistance (JA) is 116°C/W in SOIC-14, enabling reliable operation in enclosed enclosures or near heat sources when proper PCB copper pour and airflow are maintained. This makes MC74AC86DR2 appropriate for motor drives, PLC I/O modules, and outdoor telecom equipment.

Does MC74AC86DR2 support 3.3 V logic systems, and what are its input thresholds at that voltage?

Yes, MC74AC86DR2 fully supports 3.3 V operation with guaranteed DC characteristics: VIH ≥ 1.5 V (min), VIL ≤ 0.9 V (max) at VCC = 3.0 V, and VOH ≥ 2.9 V (min), VOL ≤ 0.1 V (max) at IOL = 24 mA. These thresholds provide >0.6 V noise margin against typical 3.3 V CMOS outputs, ensuring robust interoperability with microcontrollers, FPGAs, and ASICs using 3.3 V I/O standards - confirmed in the device's Recommended Operating Conditions table.

Can MC74AC86DR2 be used in place of MC74AC86DG, and what is the difference between them?

Yes, MC74AC86DR2 and MC74AC86DG are functionally identical and share the same SOIC-14 package and electrical specifications. The sole difference is packaging format: MC74AC86DG ships in rail (55 units), while MC74AC86DR2 ships in tape-and-reel (2500 units), optimized for automated SMT assembly. Both bear the "G" suffix indicating Pb-free construction and are interchangeable in design - MC74AC86DR2 is the preferred choice for high-volume production.