74LVC86ADTR2G Equivalent & Substitute Parts

Part Overview

The 74LVC86ADTR2G is a 4-channel XOR (Exclusive OR) logic gate IC manufactured by onsemi, housed in a 14-TSSOP surface mount package. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity. The part operates across a supply voltage range of 1.2V to 3.6V with a maximum quiescent current of 40 µA and propagation delay of 6ns at 3.3V with 50pF load.

Substiute Parts

74LVC86ADTR2G

onsemiIn Stock: 92274LVC86ADTR2G Datasheet

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MC74LCX86DTR2G

onsemiIn Stock: 2275MC74LCX86DTR2G Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 74LVC86ADTR2G is determined by the following critical parameters:

• Logic Function: XOR gate with 4 channels and 2 inputs per channel
• Package Compatibility: 14-TSSOP surface mount package with identical physical dimensions
• Supply Voltage Range: Minimum 1.2V operation capability
• Output Drive Capability: 24mA output current (high and low)
• Propagation Delay: Maximum 6ns at 3.3V, 50pF load
• Temperature Range: Minimum -40°C to 125°C operating window
• Regulatory Compliance: ROHS3 compliance and REACH unaffected status

The MC74LCX86DTR2G qualifies as a substitute based on matching logic function, package type, output drive specifications, and regulatory compliance. However, differences in supply voltage range, quiescent current, and operating temperature must be evaluated against specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

The MC74LCX86DTR2G is an active product substitute for the obsolete 74LVC86ADTR2G, offering improved availability and equivalent functional performance in most applications. Both parts maintain ROHS3 compliance and identical package geometry, enabling direct PCB-level replacement without layout modifications.

Key considerations for selection:

The MC74LCX86DTR2G operates at a minimum supply voltage of 2V, compared to 1.2V for the 74LVC86ADTR2G. Applications requiring operation below 2V supply voltage cannot use the substitute without design modification.

The MC74LCX86DTR2G exhibits lower quiescent current (10 µA versus 40 µA), providing power consumption benefits in battery-powered or low-power applications.

The MC74LCX86DTR2G specifies a maximum operating temperature of 85°C, compared to 125°C for the 74LVC86ADTR2G. High-temperature applications exceeding 85°C ambient or junction temperature require the original part or alternative solutions.

Propagation delay increases marginally from 6ns to 6.5ns at 3.3V with 50pF load, remaining within acceptable timing margins for most digital logic applications.

Frequently Asked Questions (FAQ)

Q: Can the MC74LCX86DTR2G replace the 74LVC86ADTR2G in all applications?

A: Direct substitution is possible for applications operating at supply voltages of 2V or higher and maximum junction temperatures not exceeding 85°C. Applications requiring 1.2V minimum supply voltage or higher temperature operation require alternative solutions.

Q: Are the packages physically identical?

A: Yes. Both parts use the 14-TSSOP package with identical dimensions (0.173" width, 4.40mm). No PCB layout modifications are required for mechanical compatibility.

Q: What is the difference in propagation delay between these parts?

A: The MC74LCX86DTR2G exhibits 6.5ns propagation delay at 3.3V with 50pF load, compared to 6ns for the 74LVC86ADTR2G. This 0.5ns difference is negligible for most digital logic applications and does not affect functional compatibility.

Q: Does the lower quiescent current of the MC74LCX86DTR2G provide significant power savings?

A: The MC74LCX86DTR2G draws 10 µA quiescent current versus 40 µA for the 74LVC86ADTR2G. In low-power or battery-powered applications, this 30 µA reduction per IC can contribute to measurable power consumption improvements across multiple devices.

Q: Are both parts RoHS compliant?

A: Yes. Both the 74LVC86ADTR2G and MC74LCX86DTR2G are ROHS3 compliant with MSL rating of 1 (Unlimited), meeting current environmental and regulatory requirements.

Q: What is the input logic level compatibility between these parts?

A: The 74LVC86ADTR2G accepts input low levels from 0.58V to 0.8V and input high levels from 1.07V to 2V. The MC74LCX86DTR2G specifies fixed input low at 0.8V and input high at 2V. Both parts are compatible with standard CMOS and TTL logic levels at 3.3V operation.