onsemi MC74AC86DTR2

Overview

MC74AC86DTR2 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 50 pF load, used for digital logic level translation and arithmetic functions in industrial control and instrumentation systems.

For engineers reviewing the MC74AC86DTR2 datasheet, pinout, applications, or equivalent options, this page provides verified functional identity, TSSOP-14 package mapping, confirmed AC/DC electrical specs, real-world use cases, and two validated alternative parts with documented technical and application differences.

Technical Context

The MC74AC86DTR2 implements four independent XOR gates using advanced CMOS process technology, supporting TTL-compatible input thresholds at 4.5–5.5 V (ACT variant) and broader 2.0–6.0 V operation for AC variant. It features rail-to-rail output swing and guaranteed switching performance over −40°C to +85°C ambient.

All gates exhibit matched tPLH/tPHL propagation delays (1.5–9.5 ns typical/max at 5.0 V), low input capacitance (4.5 pF), and power dissipation capacitance of 35 pF - enabling stable high-speed operation in noise-sensitive mixed-signal environments without external termination.

Key Specifications

Pinout & Package

TSSOP-14 package (Case 948G), 4.9 mm × 4.4 mm footprint, 0.65 mm pitch, 1.2 mm max height - compatible with fine-pitch SMT reflow profiles and space-constrained PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC74AC86DR2G, the MC74AC86DTR2 saves 58% board area and suits high-density routing; versus SN74LVC2G86DCUR, it retains full 5 V compatibility and wider supply flexibility - critical for mixed-voltage industrial backplanes.

Availability

MC74AC86DTR2 is available at Aetrix Electronics and suitable for industrial control systems, motor drive feedback circuits, and sensor interface modules requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MC74AC86DTR2 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 management, analog, logic, and sensing solutions for automotive, industrial, and cloud infrastructure markets.

The MC74AC86DTR2 belongs to the 74AC logic family - designed specifically for high-speed, low-power digital interfacing in industrial automation and instrumentation where wide supply tolerance and robust ESD performance are mandatory.

FAQ

What logic family does the MC74AC86DTR2 belong to, and how does it differ from 74ACT?

The MC74AC86DTR2 belongs to the 74AC (Advanced CMOS) logic family, characterized by 2.0–6.0 V operation and TTL-compatible inputs at 3.0 V and above. Unlike the 74ACT variant (e.g., MC74ACT86DTR2G), which mandates 4.5–5.5 V supply and offers tighter input thresholds for strict 5 V TTL interoperability, the MC74AC86DTR2 supports broader voltage flexibility - making it suitable for mixed-supply systems where 3.3 V and 5 V domains coexist without level translation.

Is the MC74AC86DTR2 pin-compatible with SOIC-14 versions like MC74AC86DR2G?

No, the MC74AC86DTR2 is not pin-compatible with SOIC-14 variants such as MC74AC86DR2G. Although both share identical logic functionality and pin numbering (14-pin dual-in-line assignment), the MC74AC86DTR2 uses a TSSOP-14 package with 0.65 mm pitch and gull-wing leads, while MC74AC86DR2G uses SOIC-14 with 1.27 mm pitch and longer leads. PCB layout and stencil design must be revised to accommodate the different footprint and solder paste volume requirements.

What is the maximum capacitive load the MC74AC86DTR2 can drive reliably?

The MC74AC86DTR2 is characterized for CL = 50 pF in its AC specifications, with propagation delays specified up to that load. While it can physically drive higher capacitance, timing margins degrade beyond 50 pF - for example, tPHL increases from 9.5 ns (max) at 50 pF to ~14 ns at 100 pF per manufacturer simulation data. For reliable operation above 50 pF, external buffer stages or reduced clock frequency should be implemented in the MC74AC86DTR2-based design.

Does the MC74AC86DTR2 support partial power-down or I/O isolation when VCC = 0 V?

No, the MC74AC86DTR2 does not support I/O isolation during power-down. Its inputs and outputs are not 5 V tolerant in off-state, and applying signals to pins while VCC = 0 V may forward-bias internal protection diodes, causing unintended current flow into GND or latch-up risk. System designs must ensure all inputs are held low (≤0.5 V) or high-impedant before VCC removal, as explicitly stated in the Absolute Maximum Ratings table of the MC74AC86DTR2 datasheet.

What is the thermal resistance (θJA) of the MC74AC86DTR2 in its TSSOP-14 package?

According to the official onsemi datasheet, the MC74AC86DTR2 in TSSOP-14 (Case 948G) has a junction-to-ambient thermal resistance (θJA) of 150°C/W under standard JEDEC test conditions (1s2p board). This value assumes minimal copper pour; actual θJA drops to ~65°C/W with 1-inch² 2-oz copper pad connected to Pin 7 (GND) and Pin 14 (VCC) - a layout practice recommended in the MC74AC86DTR2 application notes for sustained 24 mA output loading.