74LCX86MX XOR Logic IC Equivalent & Substitute Parts

Part Overview

The 74LCX86MX is a 4-channel, 2-input XOR (Exclusive OR) logic integrated circuit manufactured by onsemi in 14-SOIC surface mount packaging. This part operates across a 2V to 3.6V supply voltage range with a maximum propagation delay of 6.5ns at 3.3V with 50pF load. The 74LCX86MX is classified as obsolete product status. Equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for production and repair applications.

Key Parameters

Parameter	Value
Logic Type	XOR (Exclusive OR)
Number of Circuits	4
Number of Inputs	2
Voltage Supply Range	2V ~ 3.6V
Current - Quiescent (Max)	10 µA
Current - Output High/Low	24mA / 24mA
Max Propagation Delay @ 3.3V, 50pF	6.5ns
Operating Temperature Range	-40°C ~ 85°C
Package / Case	14-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the 74LCX86MX is determined by the following critical parameters: logic function (XOR 4-channel 2-input), package type (14-SOIC surface mount), supply voltage compatibility, propagation delay performance, and output drive capability. All substitute parts maintain the same functional logic configuration and package footprint. Voltage supply range compatibility is the primary constraint; parts must operate within or encompass the 2V to 3.6V range of the original device. Propagation delay and quiescent current specifications define performance boundaries for timing-critical applications.

Substitute parts are grouped into three categories:

Parametric Equivalent: MC74LCX86DR2G (onsemi) maintains identical electrical specifications and 74LCX series designation.

Direct Manufacturer Equivalents: 74LVC86AS14-13 (Diodes Incorporated) and SN74LVC86ADR (Texas Instruments) provide functional equivalence with extended voltage ranges and improved performance characteristics.

Similar Alternatives: SN74LVC86AD, SN74LVC86ADT, SN74LVC86ANS, SN74LVC86ANSR, SN74LVC86AQDREP, and SN74LVC86AMDREP (Texas Instruments and Nexperia) offer compatible logic function with variations in packaging format and electrical specifications.

Parameter Comparison

Part Number	Manufacturer	Series	Voltage Supply	Quiescent Current (Max)	Propagation Delay @ 3.3V, 50pF	Operating Temp	Package	Product Status
74LCX86MX	onsemi	74LCX	2V ~ 3.6V	10 µA	6.5ns	-40°C ~ 85°C	14-SOIC (0.154")	Obsolete
MC74LCX86DR2G	onsemi	74LCX	2V ~ 3.6V	10 µA	6.5ns	-40°C ~ 85°C	14-SOIC (0.154")	Active
74LVC86AS14-13	Diodes Incorporated	74LVC	1.65V ~ 5.5V	10 µA	4.4ns	-40°C ~ 125°C	14-SOIC (0.154")	Active
SN74LVC86ADR	Texas Instruments	74LVC	1.65V ~ 3.6V	1 µA	4.4ns	-40°C ~ 125°C	14-SOIC (0.154")	Active
74LVC86AD,118	Nexperia USA Inc.	74LVC	1.2V ~ 3.6V	40 µA	5ns	-40°C ~ 125°C	14-SOIC (0.154")	Active
SN74LVC86AD	Texas Instruments	74LVC	1.65V ~ 3.6V	1 µA	4.4ns	-40°C ~ 125°C	14-SOIC (0.154")	Active
SN74LVC86ADT	Texas Instruments	74LVC	1.65V ~ 3.6V	1 µA	4.4ns	-40°C ~ 125°C	14-SOIC (0.154")	Active
SN74LVC86AMDREP	Texas Instruments	74LVC	2V ~ 3.6V	10 µA	4.6ns	-55°C ~ 125°C	14-SOIC (0.154")	Active
SN74LVC86ANS	Texas Instruments	74LVC	1.65V ~ 3.6V	1 µA	4.4ns	-40°C ~ 125°C	14-SOIC (0.209")	Active
SN74LVC86ANSR	Texas Instruments	74LVC	1.65V ~ 3.6V	1 µA	4.4ns	-40°C ~ 125°C	14-SOIC (0.209")	Active
SN74LVC86AQDREP	Texas Instruments	74LVC	2V ~ 3.6V	10 µA	4.6ns	-40°C ~ 125°C	14-SOIC (0.154")	Active

Engineering Selection Recommendations

Primary Recommendation: MC74LCX86DR2G provides direct parametric equivalence to the 74LCX86MX with active product status from the same manufacturer. This part maintains identical electrical specifications and 14-SOIC (0.154") package dimensions, enabling direct board-level substitution without design modification.

Extended Voltage Range Alternatives: SN74LVC86ADR and SN74LVC86ADT (Texas Instruments) offer superior voltage supply range (1.65V ~ 3.6V) and reduced quiescent current (1 µA), with faster propagation delay (4.4ns). These parts are suitable for applications requiring lower power consumption and extended operating voltage margins. Both maintain 14-SOIC (0.154") package compatibility.

Broader Compatibility Option: 74LVC86AS14-13 (Diodes Incorporated) provides the widest voltage supply range (1.65V ~ 5.5V) and extended operating temperature to 125°C, with improved propagation delay performance (4.4ns). This part accommodates mixed-voltage system designs.

Temperature-Extended Alternative: SN74LVC86AMDREP and SN74LVC86AQDREP (Texas Instruments) extend operating temperature range to -55°C and -40°C respectively to 125°C, with voltage supply range of 2V ~ 3.6V matching the original specification. These parts are suitable for industrial and automotive temperature environments.

All substitute parts maintain ROHS3 compliance, MSL Level 1 (Unlimited), and equivalent output drive capability (24mA high/low). Selection should prioritize MC74LCX86DR2G for direct replacement, or 74LVC series alternatives when extended voltage range or improved performance characteristics are required by system design.

Frequently Asked Questions (FAQ)

Q: Can MC74LCX86DR2G directly replace 74LCX86MX without PCB modification?

A: Yes. MC74LCX86DR2G maintains identical electrical specifications, 14-SOIC (0.154") package footprint, and pin configuration. Direct board-level substitution is supported.

Q: What is the primary difference between 74LCX and 74LVC series parts?

A: The 74LVC series provides extended voltage supply range (typically 1.65V ~ 5.5V or 1.65V ~ 3.6V) compared to 74LCX (2V ~ 3.6V), with generally lower quiescent current and faster propagation delay. 74LVC parts are active production devices, while 74LCX is obsolete.

Q: Are SN74LVC86ANS and SN74LVC86ANSR compatible with the original 14-SOIC (0.154") footprint?

A: No. SN74LVC86ANS and SN74LVC86ANSR use 14-SOIC (0.209", 5.30mm Width) package, which differs from the original 14-SOIC (0.154", 3.90mm Width). These parts require PCB layout modification and are not direct substitutes.

Q: Which substitute part offers the lowest power consumption?

A: SN74LVC86ADR, SN74LVC86AD, SN74LVC86ADT, SN74LVC86ANS, and SN74LVC86ANSR all specify 1 µA maximum quiescent current, compared to 10 µA for the original 74LCX86MX and MC74LCX86DR2G.

Q: Can 74LVC86AS14-13 operate at voltages above 3.6V?

A: Yes. 74LVC86AS14-13 supports supply voltage range of 1.65V ~ 5.5V, enabling operation in 5V logic systems. The original 74LCX86MX is limited to 2V ~ 3.6V.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and MSL Level 1 (Unlimited) moisture sensitivity rating, matching the original part's environmental certifications.

Q: What is the propagation delay advantage of 74LVC series over 74LCX?

A: 74LVC series parts specify 4.4ns to 5ns propagation delay at 3.3V with 50pF load, compared to 6.5ns for the original 74LCX86MX, representing approximately 30% performance improvement.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message