74LCX86M XOR Logic IC Equivalent & Substitute Parts

Part Overview

The 74LCX86M is a 4-channel, 2-input XOR (Exclusive OR) logic IC 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 74LCX86M is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. Active alternatives from Texas Instruments and Nexperia provide enhanced performance characteristics while maintaining functional and pin compatibility.

Key Parameters

Parameter	74LCX86M
Manufacturer	onsemi
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
Input Logic Level - Low	0.7V ~ 0.8V
Input Logic Level - High	1.7V ~ 2V
Max Propagation Delay @ 3.3V, 50pF	6.5ns
Operating Temperature	-40°C ~ 85°C
Package / Case	14-SOIC (0.154", 3.90mm Width)
Product Status	Obsolete
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the 74LCX86M is determined by the following critical parameters:

Functional Compatibility: All substitute parts maintain 4-channel, 2-input XOR logic configuration with identical pin assignments and 14-pin SOIC packaging.

Electrical Compatibility: Substitute parts must support the 2V to 3.6V supply voltage range of the original part. The 74LVC series from Texas Instruments and Nexperia extends the lower voltage limit to 1.65V or 1.2V, providing backward compatibility. Output drive capability (24mA high/low) is maintained across all substitutes.

Timing Performance: Propagation delay specifications range from 4.4ns to 5ns at 3.3V with 50pF load, all meeting or exceeding the 6.5ns specification of the 74LCX86M.

Packaging Variants: Substitutes are available in 14-SOIC and 14-SO packages with different tape & reel, tube, and cut tape options to accommodate various procurement and assembly requirements.

Product Status: Active alternatives from Texas Instruments (SN74LVC86AD, SN74LVC86ADR, SN74LVC86ADT, SN74LVC86ANS, SN74LVC86ANSR, SN74LVC86AQDREP, SN74LVC86AMDREP) and Nexperia (74LVC86AD,118) provide long-term availability and supply continuity.

Parameter Comparison

Parameter	74LCX86M (onsemi)	SN74LVC86AD (TI)	74LVC86AD,118 (Nexperia)	SN74LVC86ADR (TI)	SN74LVC86ADT (TI)	SN74LVC86AMDREP (TI)	SN74LVC86ANS (TI)	SN74LVC86ANSR (TI)	SN74LVC86AQDREP (TI)
Logic Type	XOR	XOR	XOR	XOR	XOR	XOR	XOR	XOR	XOR
Number of Circuits	4	4	4	4	4	4	4	4	4
Number of Inputs	2	2	2	2	2	2	2	2	2
Voltage Supply Range	2V ~ 3.6V	1.65V ~ 3.6V	1.2V ~ 3.6V	1.65V ~ 3.6V	1.65V ~ 3.6V	2V ~ 3.6V	1.65V ~ 3.6V	1.65V ~ 3.6V	2V ~ 3.6V
Current - Quiescent (Max)	10 µA	1 µA	40 µA	1 µA	1 µA	10 µA	1 µA	1 µA	10 µA
Current - Output High/Low	24mA / 24mA	24mA / 24mA	24mA / 24mA	24mA / 24mA	24mA / 24mA	24mA / 24mA	24mA / 24mA	24mA / 24mA	24mA / 24mA
Max Propagation Delay @ 3.3V, 50pF	6.5ns	4.4ns	5ns	4.4ns	4.4ns	4.6ns	4.4ns	4.4ns	4.6ns
Operating Temperature	-40°C ~ 85°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-55°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C
Package / Case	14-SOIC (0.154", 3.90mm)	14-SOIC (0.154", 3.90mm)	14-SOIC (0.154", 3.90mm)	14-SOIC (0.154", 3.90mm)	14-SOIC (0.154", 3.90mm)	14-SOIC (0.154", 3.90mm)	14-SOIC (0.209", 5.30mm)	14-SOIC (0.209", 5.30mm)	14-SOIC (0.154", 3.90mm)
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Primary Substitutes (Highest Compatibility): SN74LVC86AD, SN74LVC86ADR, and SN74LVC86ADT from Texas Instruments are direct functional replacements with identical 14-SOIC (0.154", 3.90mm) packaging. These parts maintain the 2V to 3.6V supply voltage compatibility while offering improved quiescent current (1 µA vs. 10 µA) and faster propagation delay (4.4ns vs. 6.5ns). All are ROHS3 compliant with MSL 1 rating.

Extended Temperature Range Option: SN74LVC86AMDREP extends the operating temperature range to -55°C to 125°C, suitable for military and aerospace applications requiring broader thermal specifications.

Wider Package Variants: SN74LVC86ANS and SN74LVC86ANSR provide 14-SO packaging (0.209", 5.30mm width) for applications where board layout accommodates larger package dimensions. These maintain identical electrical specifications to the standard 14-SOIC variants.

Alternative Manufacturer: 74LVC86AD,118 from Nexperia USA Inc. offers the widest supply voltage range (1.2V to 3.6V) with Tape & Reel packaging, though quiescent current is higher at 40 µA.

All substitute parts maintain ROHS3 compliance, MSL 1 rating, and identical logic functionality, ensuring direct replacement capability in existing designs.

Frequently Asked Questions (FAQ)

Q: Can the 74LCX86M be directly replaced with SN74LVC86AD?

A: Yes. Both parts are 4-channel, 2-input XOR logic ICs in 14-SOIC packaging with identical pin assignments. The SN74LVC86AD operates within the 2V to 3.6V supply range of the 74LCX86M and provides superior performance with faster propagation delay (4.4ns vs. 6.5ns) and lower quiescent current (1 µA vs. 10 µA).

Q: What is the difference between 14-SOIC and 14-SO packaging variants?

A: The primary difference is package width. 14-SOIC (0.154", 3.90mm) is the narrow variant, while 14-SO (0.209", 5.30mm) is wider. Both maintain identical pin pitch and electrical specifications. Package selection depends on PCB layout constraints and assembly equipment compatibility.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts (SN74LVC86AD, SN74LVC86ADR, SN74LVC86ADT, SN74LVC86AMDREP, SN74LVC86ANS, SN74LVC86ANSR, SN74LVC86AQDREP, and 74LVC86AD,118) are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.

Q: Which substitute offers the lowest power consumption?

A: SN74LVC86AD, SN74LVC86ADR, SN74LVC86ADT, SN74LVC86ANS, and SN74LVC86ANSR all feature 1 µA maximum quiescent current, compared to 10 µA for the 74LCX86M. The 74LVC86AD,118 from Nexperia has higher quiescent current at 40 µA.

Q: What is the fastest propagation delay among the substitutes?

A: SN74LVC86AD, SN74LVC86ADR, SN74LVC86ADT, SN74LVC86ANS, and SN74LVC86ANSR all achieve 4.4ns maximum propagation delay at 3.3V with 50pF load, compared to 6.5ns for the 74LCX86M.

Q: Can I use SN74LVC86AMDREP in applications requiring -55°C operation?

A: Yes. SN74LVC86AMDREP is rated for -55°C to 125°C operating temperature, extending the lower temperature limit compared to other variants rated -40°C to 125°C.

Q: Are there packaging options other than 14-SOIC and 14-SO?

A: The provided substitute parts are available only in 14-SOIC (0.154", 3.90mm) or 14-SO (0.209", 5.30mm) configurations. Packaging variants differ by tape & reel, tube, or cut tape options for procurement and assembly purposes.

Q: What is the supply voltage compatibility range for all substitutes?

A: All substitutes support the 2V to 3.6V range of the 74LCX86M. Texas Instruments variants (SN74LVC86AD series) extend to 1.65V minimum, while Nexperia's 74LVC86AD,118 extends to 1.2V minimum, providing additional design flexibility for lower voltage applications.

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