74LCX86MTC XOR Logic IC Equivalent & Substitute Parts

Part Overview

The 74LCX86MTC is a 4-channel, 2-input XOR (Exclusive OR) logic IC manufactured by onsemi in 14-TSSOP 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 74LCX86MTC is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements.

Key Parameters

Parameter	Value
Logic Type	XOR (Exclusive OR)
Number of Circuits	4
Number of Inputs	2
Voltage - Supply	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-TSSOP (0.173", 4.40mm Width)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the 74LCX86MTC is determined by the following critical parameters:

Logic function: 4-channel, 2-input XOR gate
Package type: 14-TSSOP surface mount
Supply voltage compatibility: Minimum 2V operation required
Output drive capability: 24mA minimum for both high and low states
Propagation delay: Maximum 6.5ns at 3.3V, 50pF load
Operating temperature range: Minimum -40°C to 85°C coverage

Substitute parts must maintain functional equivalence across these parameters. The 74LVC series variants from Texas Instruments and Nexperia provide direct functional replacement with enhanced specifications in most cases. Parts are grouped by product status (Active vs. Discontinued) and packaging format (Tube, Cut Tape & Digi-Reel, Tape & Reel).

Parameter Comparison

Part Number	Manufacturer	Series	Voltage - Supply	Current - Quiescent (Max)	Max Propagation Delay @ 3.3V, 50pF	Operating Temperature	Package / Case	Product Status
74LCX86MTC	onsemi	74LCX	2V ~ 3.6V	10 µA	6.5ns	-40°C ~ 85°C	14-TSSOP	Obsolete
74LVC86APW,118	Nexperia USA Inc.	74LVC	1.2V ~ 3.6V	40 µA	5ns	-40°C ~ 125°C	14-TSSOP	Active
SN74LVC86ADBR	Texas Instruments	74LVC	1.65V ~ 3.6V	1 µA	4.4ns	-40°C ~ 125°C	14-SSOP	Active
SN74LVC86APW	Texas Instruments	74LVC	1.65V ~ 3.6V	1 µA	4.4ns	-40°C ~ 125°C	14-TSSOP	Active
SN74LVC86APWG4	Texas Instruments	74LVC	1.65V ~ 3.6V	1 µA	4.4ns	-40°C ~ 125°C	14-TSSOP	Discontinued at DiGi Electronics
SN74LVC86APWR	Texas Instruments	74LVC	1.65V ~ 3.6V	1 µA	4.4ns	-40°C ~ 125°C	14-TSSOP	Active
SN74LVC86APWT	Texas Instruments	74LVC	1.65V ~ 3.6V	1 µA	4.4ns	-40°C ~ 125°C	14-TSSOP	Discontinued at DiGi Electronics
SN74LVC86AQPWREP	Texas Instruments	74LVC	2V ~ 3.6V	10 µA	4.6ns	-40°C ~ 125°C	14-TSSOP	Active
SN74LVC86AQPWRG4Q1	Texas Instruments	74LVC	2V ~ 3.6V	10 µA	4.6ns	-40°C ~ 125°C	14-TSSOP	Active
SN74LVC86AQPWRQ1	Texas Instruments	74LVC	2V ~ 3.6V	10 µA	4.6ns	-40°C ~ 125°C	14-TSSOP	Active

Engineering Selection Recommendations

For replacement of the obsolete 74LCX86MTC, the following selection criteria apply:

Primary Recommendation - Closest Parameter Match: SN74LVC86AQPWREP, SN74LVC86AQPWRG4Q1, and SN74LVC86AQPWRQ1 provide the closest electrical alignment to the original part, maintaining identical supply voltage range (2V ~ 3.6V) and quiescent current (10 µA). All three are Active status parts with ROHS3 compliance and AEC-Q100 automotive qualification available on the G4Q1 and Q1 variants. These parts offer improved propagation delay (4.6ns vs. 6.5ns) and extended operating temperature range (-40°C ~ 125°C vs. -40°C ~ 85°C).

Alternative - Enhanced Performance: SN74LVC86APW and SN74LVC86APWR offer superior propagation delay (4.4ns) and lower quiescent current (1 µA) with Active product status. These parts require minimum 1.65V supply voltage, which is compatible with the 74LCX86MTC's 2V minimum specification. Both are available in 14-TSSOP packaging with ROHS3 compliance.

Package Consideration: SN74LVC86ADBR is available in 14-SSOP packaging (5.30mm width) rather than 14-TSSOP (4.40mm width). This package variant requires PCB layout verification before selection.

Discontinued Parts: SN74LVC86APWG4 and SN74LVC86APWT are discontinued at DiGi Electronics and should be avoided for new designs requiring long-term supply assurance.

All substitute parts maintain ROHS3 compliance, MSL 1 rating, and EAR99 export classification consistent with the original part.

Frequently Asked Questions (FAQ)

Q: Can SN74LVC86APW directly replace 74LCX86MTC in existing designs? A: Yes. SN74LVC86APW maintains the same 14-TSSOP package and XOR logic function. The lower minimum supply voltage (1.65V vs. 2V) and improved propagation delay (4.4ns vs. 6.5ns) are compatible with designs specified for the 74LCX86MTC. Verify that your circuit operates within the 1.65V to 3.6V range if using this part.

Q: What is the difference between 74LVC86APW,118 and SN74LVC86APW? A: 74LVC86APW,118 is manufactured by Nexperia USA Inc. and SN74LVC86APW is manufactured by Texas Instruments. Both are 4-channel 2-input XOR gates in 14-TSSOP packaging with Active product status. The Nexperia part has a lower minimum supply voltage (1.2V) and slightly higher quiescent current (40 µA vs. 1 µA). Both are functionally equivalent for the 74LCX86MTC replacement.

Q: Why do SN74LVC86AQPWRG4Q1 and SN74LVC86AQPWRQ1 have AEC-Q100 qualification? A: AEC-Q100 qualification indicates these parts meet automotive-grade reliability standards. This qualification is relevant only if your application requires automotive-grade components. For non-automotive applications, standard 74LVC variants without AEC-Q100 designation are suitable.

Q: Is the 14-SSOP package of SN74LVC86ADBR compatible with 14-TSSOP PCB layouts? A: No. The 14-SSOP package (5.30mm width) has different pin spacing and footprint dimensions compared to 14-TSSOP (4.40mm width). PCB layout and footprint modifications are required if selecting SN74LVC86ADBR.

Q: What is the significance of the supply voltage range difference between 74LCX86MTC (2V ~ 3.6V) and SN74LVC86APW (1.65V ~ 3.6V)? A: The 74LCX86MTC requires minimum 2V operation, while SN74LVC86APW operates down to 1.65V. If your circuit is designed for 2V minimum operation, both parts are compatible. The SN74LVC86APW provides additional flexibility for lower voltage applications.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, consistent with the original 74LCX86MTC.

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