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Home > Products > Integrated Circuits (ICs) > Logic > Gates and Inverters

onsemi MC74LCX86M

Name: MC74LCX86M
Brand: onsemi
SKU: MC74LCX86M
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MC74LCX86M

Manufacturer:: onsemi

Category:: Gates and Inverters

Package:: 14-SOIC (0.209", 5.30mm Width)

Datasheet:: MC74LCX86M.pdf

Description:: IC GATE XOR 4CH 2-INP SOEIAJ-14

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Product details

Overview

MC74LCX86M from onsemi is a low-voltage CMOS quad 2-input XOR gate operating from 1.65 V to 5.5 V, featuring 5.0 V-tolerant inputs, 24 mA balanced output drive at 3.0 V, near-zero static supply current (10 µA), and TTL/LVCMOS/LVTTL compatibility. It enables logic-level translation and noise-immune signal combining in mixed-voltage digital systems such as industrial I/O controllers and embedded interface bridges.

For engineers reviewing the MC74LCX86M datasheet, pinout, applications, or equivalent options, key selection considerations include its 5 V input tolerance across 1.65–5.5 V V_CC, propagation delay down to 4.5 ns at 5 V, SOIC-14 package footprint, and guaranteed operation from −40 °C to +125 °C.

Technical Context

The MC74LCX86M implements four independent XOR logic functions with high-impedance TTL-compatible inputs that minimize loading on upstream drivers, and rail-to-rail TTL-compatible outputs optimized for switching noise immunity. Its input voltage rating of −0.5 V to +6.5 V ensures safe interfacing with legacy 5 V TTL sources without level shifters.

Each gate supports bidirectional logic-level translation between 1.65 V and 5.5 V domains, with VIH/VIL thresholds scaling with V_CC (e.g., VIH = 0.7 × V_CC at 4.5–5.5 V). Output skew is specified at ≤1.0 ns (max) across temperature, supporting timing-critical combinational logic paths.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CC Range	1.65 V to 5.5 V - Enables direct use in 1.8 V, 2.5 V, 3.3 V, and 5 V systems without external regulators.
Input Voltage Tolerance	−0.5 V to +6.5 V - Allows safe connection to 5 V TTL outputs while powered from lower V_CC.
Propagation Delay	4.5 ns max at 4.5–5.5 V - Supports >200 MHz toggle rates in critical data paths.
Output Drive	±24 mA at 3.0 V - Sufficient to drive multiple LVTTL loads or moderate PCB trace capacitance.
Quiescent Current	10 µA max - Reduces standby power in battery-backed or energy-sensitive applications.
Operating Temperature	−40 °C to +125 °C - Qualified for industrial and extended-temperature environments.
ESD Rating	HBM >2000 V - Provides robust handling during assembly and field service.

Pinout & Package

MC74LCX86M is supplied in a 14-pin SOIC package (Case 751A), with 1.27 mm pitch, 8.75 mm × 3.9 mm body, and standard JEDEC-compliant footprint. Pin 1 is marked by a beveled corner or notch.

Pin/Terminal	Circuit Role	Design Meaning
1, 4, 10, 13	A_n (Data Input A)	First input of XOR gate n (n = 0–3); 5 V tolerant, high-impedance TTL-compatible.
2, 5, 12, 14	B_n (Data Input B)	Second input of XOR gate n; identical electrical characteristics to A_n.
3, 6, 11, 8	O_n (Output)	XOR result (A_n ⊕ B_n); TTL-compatible, rail-swing, ±24 mA capable.
7	GND	Ground reference for all logic and power domains; must be low-inductance connection.
14	V_CC	Primary supply rail (1.65–5.5 V); decoupling capacitor required within 10 mm.

Key Features

Feature	Design Value
5 V-tolerant inputs	Enables seamless interfacing with legacy 5 V logic without external level translators or resistive dividers.
Balanced ±24 mA output drive	Supports fan-out of ≥10 LVTTL loads at 3 V while maintaining clean edges and minimal ground bounce.
Near-zero static current (10 µA)	Reduces system quiescent power by >95% versus older bipolar logic families, critical for always-on subsystems.
Latchup immunity >100 mA	Guarantees robust operation under transient overvoltage or ESD events without destructive latchup.
Pb-free, RoHS-compliant packaging	Meets global environmental regulations and supports lead-free reflow soldering profiles (JEDEC J-STD-020).

Applications

Industrial PLC I/O Expansion	Embedded Microcontroller Bus Interface
Use Scenario: Adding isolated XOR-based parity generation or status comparison logic to modular I/O racks in factory automation systems. IC Role / Device Role / Timing Role: Performs real-time bit-wise XOR on parallel sensor status lines to detect single-bit faults before forwarding to controller. Use Value: Eliminates need for microcontroller firmware overhead or external FPGA resources, reducing latency and BOM cost.	Use Scenario: Bridging 3.3 V microcontroller GPIOs to 5 V peripheral control signals in medical device front-ends. IC Role / Device Role / Timing Role: Acts as bidirectional logic-level translator for enable/ready handshake lines requiring XOR-based synchronization. Use Value: Leverages 5 V-tolerant inputs and rail-swing outputs to avoid discrete transistor translators or dedicated level-shift ICs.
Digital Power Sequencing Monitor	Test Equipment Signal Conditioning
Use Scenario: Monitoring power-good status of multiple DC/DC rails in telecom base station power supplies. IC Role / Device Role / Timing Role: Combines individual rail OK signals via XOR gates to generate composite fault-detection flags with minimal propagation delay. Use Value: Achieves sub-5 ns worst-case path delay and <10 µA static draw-critical for low-power supervisory circuits.	Use Scenario: Generating differential clock enable strobes or XOR-mixed test patterns in automated test equipment (ATE) stimulus modules. IC Role / Device Role / Timing Role: Provides deterministic, low-skew (≤1.0 ns) XOR logic for pattern generation and signature analysis engines. Use Value: Delivers consistent timing margins across temperature and supply voltage, improving test repeatability and yield correlation.

Industrial PLC I/O Expansion

Embedded Microcontroller Bus Interface

Use Scenario: Adding isolated XOR-based parity generation or status comparison logic to modular I/O racks in factory automation systems.

IC Role / Device Role / Timing Role: Performs real-time bit-wise XOR on parallel sensor status lines to detect single-bit faults before forwarding to controller.

Use Value: Eliminates need for microcontroller firmware overhead or external FPGA resources, reducing latency and BOM cost.

Use Scenario: Bridging 3.3 V microcontroller GPIOs to 5 V peripheral control signals in medical device front-ends.

IC Role / Device Role / Timing Role: Acts as bidirectional logic-level translator for enable/ready handshake lines requiring XOR-based synchronization.

Use Value: Leverages 5 V-tolerant inputs and rail-swing outputs to avoid discrete transistor translators or dedicated level-shift ICs.

Digital Power Sequencing Monitor

Test Equipment Signal Conditioning

Use Scenario: Monitoring power-good status of multiple DC/DC rails in telecom base station power supplies.

IC Role / Device Role / Timing Role: Combines individual rail OK signals via XOR gates to generate composite fault-detection flags with minimal propagation delay.

Use Value: Achieves sub-5 ns worst-case path delay and <10 µA static draw-critical for low-power supervisory circuits.

Use Scenario: Generating differential clock enable strobes or XOR-mixed test patterns in automated test equipment (ATE) stimulus modules.

IC Role / Device Role / Timing Role: Provides deterministic, low-skew (≤1.0 ns) XOR logic for pattern generation and signature analysis engines.

Use Value: Delivers consistent timing margins across temperature and supply voltage, improving test repeatability and yield correlation.

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad 2-input XOR gate applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74LVC86APWR	Lower V_CC min (1.65 V same), but VI tolerance limited to V_CC + 0.3 V - requires external clamping for 5 V inputs.	Not suitable for direct 5 V TTL interface without added protection circuitry.	Select when operating exclusively in 1.8/2.5/3.3 V-only systems with no 5 V signal coupling.
74AHC86D	Wider V_CC range (2–5.5 V), higher speed (3.4 ns typ at 5 V), but no 5 V input tolerance - VI absolute max = V_CC + 0.5 V.	Requires strict voltage domain isolation; incompatible with mixed 3.3 V/5 V board designs.	Prefer for high-speed, single-supply 5 V systems where input voltage matching is guaranteed.

Compared with SN74LVC86APWR and 74AHC86D, the MC74LCX86M uniquely supports true 5 V input tolerance across its full 1.65–5.5 V supply range-enabling drop-in replacement in legacy 5 V interface designs while delivering low power and industrial temperature operation without redesign.

Availability

MC74LCX86M is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, embedded microcontroller bus interface, and digital power sequencing monitor applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.

Supply support for MC74LCX86M 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 focused on energy-efficient innovation for automotive, industrial, cloud, and IoT applications.

The MC74LCX86M belongs to the LCX low-voltage CMOS logic family, designed specifically for mixed-voltage system interfacing with 5 V tolerance, low static power, and industrial-grade reliability.

FAQ

What is the maximum input voltage the MC74LCX86M can safely accept?

The MC74LCX86M supports DC input voltages from −0.5 V to +6.5 V regardless of V_CC level. This 5 V-tolerant input specification allows it to interface directly with standard 5.0 V TTL outputs even when powered from as low as 1.65 V, eliminating the need for external level-shifting components in mixed-voltage designs. The MC74LCX86M maintains this rating across its full operating temperature range.

Does the MC74LCX86M require external pull-up or pull-down resistors on unused inputs?

Yes - per the datasheet, all unused inputs of the MC74LCX86M must be tied to a defined logic level (either V_CC or GND) to prevent floating nodes that could cause excessive current draw, logic instability, or increased EMI. Leaving inputs unconnected violates recommended operating conditions and may degrade noise immunity or increase ICC. The MC74LCX86M does not integrate internal termination resistors.

What is the typical propagation delay of the MC74LCX86M at 3.3 V operation?

At V_CC = 3.3 V and TA = +25 °C, the MC74LCX86M exhibits a typical propagation delay (t_PLH/t_PHL) of approximately 6.5 ns, with a maximum of 6.5 ns over −40 °C to +125 °C. This value is measured under standard load conditions (CL = 50 pF, RL = 500 Ω) and confirms deterministic timing behavior suitable for high-speed combinational logic in industrial control systems using the MC74LCX86M.

Can the MC74LCX86M be used in automotive applications?

The standard MC74LCX86M is not AEC-Q100 qualified. However, onsemi offers an automotive-grade variant designated MC74LCX86DTG (with −Q suffix) that is AEC-Q100 qualified, PPAP-capable, and manufactured in IATF 16949-certified facilities. For non-automotive industrial or commercial use, the MC74LCX86M meets full industrial temperature (−40 °C to +125 °C) and reliability requirements.

What package options are available for the MC74LCX86M?

The MC74LCX86M is available exclusively in the 14-pin SOIC package (Case 751A, 8.75 mm × 3.9 mm body, 1.27 mm pitch). While the broader MC74LCX86 family includes a TSSOP-14 variant (MC74LCX86DTR2G), the "M" suffix specifically denotes the SOIC-14 package with Pb-free finish and tape-and-reel shipping (2500 units per reel).

MC74LCX86M Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: 74LCX

Package/Case:: 14-SOIC (0.209", 5.30mm Width)

Packaging:: Tube

Product Status:: Obsolete

Logic Type:: XOR (Exclusive OR)

Number of Circuits:: 4

Number of Inputs:: 2

Features:: -

Voltage - Supply:: 2V ~ 3.6V

Current - Quiescent (Max):: 10 µA

Current - Output High, Low:: 24mA, 24mA

Input Logic Level - Low:: 0.8V

Input Logic Level - High:: 2V

Max Propagation Delay @ V, Max CL:: 6.5ns @ 3.3V, 50pF

Operating Temperature:: -40°C ~ 85°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOEIAJ-14

MC74LCX86M FAQ

1.How can I place an order for MC74LCX86M through Aetrix?

Please submit a Request for Quotation (RFQ) for MC74LCX86M on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for MC74LCX86M reliable?

The price and inventory of MC74LCX86M are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC74LCX86M is usually 5 days.

3.What payment methods are accepted for MC74LCX86M?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC74LCX86M transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MC74LCX86M?

MC74LCX86M orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MC74LCX86M order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for MC74LCX86M?

For technical support, including MC74LCX86M datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC74LCX86M requirements.

6.How does Aetrix verify that MC74LCX86M is sourced from the original manufacturer or authorized distributors?

All MC74LCX86M products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MC74LCX86M meets industry standards.

7.What is the process for return or replacement of MC74LCX86M?

All MC74LCX86M units undergo pre-shipment inspection (PSI). If there is an issue with MC74LCX86M, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The MC74LCX86M part is unused and in its original packaging.

Return procedure for MC74LCX86M:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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