SN74HC86DT XOR Logic IC Equivalent & Substitute Parts

Part Overview

The SN74HC86DT is a 4-channel, 2-input XOR (Exclusive OR) logic gate IC manufactured by Texas Instruments in 14-SOIC surface mount packaging. This part is discontinued at DiGi Electronics but remains available through inventory channels with 1,325 pieces in stock. The discontinuation status necessitates identification of active equivalent and substitute parts that maintain functional and electrical compatibility for ongoing 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 to 6V
Current - Quiescent (Max)	2 µA
Current - Output High/Low	5.2mA / 5.2mA
Input Logic Level - Low	0.5V to 1.8V
Input Logic Level - High	1.5V to 4.2V
Max Propagation Delay @ 6V, 50pF	17ns
Operating Temperature	-40°C to 85°C
Mounting Type	Surface Mount
Package / Case	14-SOIC (0.154", 3.90mm Width)
Base Product Number	74HC86
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the SN74HC86DT is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

Logic Type: XOR (Exclusive OR) with 4 channels and 2 inputs per channel
Voltage Supply Range: 2V to 6V minimum
Package: 14-SOIC or 14-SO surface mount
Propagation Delay: 17ns to 20ns @ 6V, 50pF load
Output Current: 5.2mA minimum for both high and low states
Operating Temperature: Minimum -40°C to 85°C

Substitute Categories:

Category 1: Parametric Equivalents (Identical Electrical Performance) Parts meeting all electrical specifications with identical or superior performance characteristics and active product status.

Category 2: Direct Manufacturer Alternatives Parts from alternative manufacturers with equivalent or superior electrical performance and active status.

Category 3: Manufacturer Recommended Substitutes Parts explicitly recommended by manufacturers as functional replacements, including automotive-grade variants.

Category 4: Extended Temperature Range Variants Parts with expanded operating temperature ranges (-55°C to 125°C) suitable for demanding applications.

Category 5: Automotive Grade Options Parts qualified to AEC-Q100 automotive standards for applications requiring automotive-grade components.

Parameter Comparison

Part Number	Manufacturer	Logic Type	Circuits/Inputs	Voltage Supply	Quiescent Current (Max)	Output Current	Propagation Delay @ 6V, 50pF	Operating Temp	Package	Product Status
SN74HC86DT	Texas Instruments	XOR	4 / 2	2V - 6V	2 µA	5.2mA / 5.2mA	17ns	-40°C to 85°C	14-SOIC	Discontinued
SN74HC86DR	Texas Instruments	XOR	4 / 2	2V - 6V	2 µA	5.2mA / 5.2mA	17ns	-40°C to 85°C	14-SOIC	Active
MC74HC86ADR2G	Fairchild Semiconductor	XOR	4 / 2	2V - 6V	1 µA	5.2mA / 5.2mA	17ns	-55°C to 125°C	14-SOIC	Active
74HC86D,653	Nexperia USA Inc.	XOR	4 / 2	2V - 6V	2 µA	5.2mA / 5.2mA	20ns	-40°C to 125°C	14-SO	Active
74HC86D-Q100,118	Nexperia USA Inc.	XOR	4 / 2	2V - 6V	2 µA	5.2mA / 5.2mA	20ns	-40°C to 125°C	14-SO	Active
74HC86S14-13	Diodes Incorporated	XOR	4 / 2	2V - 6V	20 µA	5.2mA / 5.2mA	15ns	-40°C to 125°C	14-SO	Active
MC74HC86ADG	onsemi	XOR	4 / 2	2V - 6V	1 µA	5.2mA / 5.2mA	17ns	-55°C to 125°C	14-SOIC	Active
MM74HC86M	Fairchild Semiconductor	XOR	4 / 2	2V - 6V	2 µA	5.2mA / 5.2mA	20ns	-40°C to 85°C	14-SOIC	Active
MM74HC86MX	Fairchild Semiconductor	XOR	4 / 2	2V - 6V	2 µA	5.2mA / 5.2mA	20ns	-40°C to 85°C	14-SOIC	Active
NLV74HC86ADG	onsemi	XOR	4 / 2	2V - 6V	1 µA	5.2mA / 5.2mA	26ns	-55°C to 125°C	14-SOIC	Obsolete

Engineering Selection Recommendations

Primary Recommendation: SN74HC86DR The SN74HC86DR from Texas Instruments is the direct equivalent to the SN74HC86DT, offering identical electrical specifications and active product status. This part maintains the same 17ns propagation delay, 2µA quiescent current, and -40°C to 85°C operating range. The only difference is packaging format (Cut Tape & Digi-Reel versus Tape & Reel), which does not affect electrical performance. With 3,800 pieces in stock, this represents the lowest-risk substitution path.

Secondary Recommendation: MC74HC86ADG (onsemi) The MC74HC86ADG provides superior performance characteristics with reduced quiescent current (1µA versus 2µA) and extended operating temperature range (-55°C to 125°C). This part is ROHS3 compliant and maintains identical propagation delay (17ns). Active product status and 12,000 pieces in inventory provide supply security. This option is suitable for applications requiring extended temperature performance.

Tertiary Recommendation: MM74HC86MX (Fairchild Semiconductor) The MM74HC86MX offers active status with 22,700 pieces in inventory, providing excellent supply availability. Electrical specifications match the original part with 2µA quiescent current and 20ns propagation delay. Bulk packaging format may require reel management considerations.

Automotive Grade Option: 74HC86D-Q100,118 (Nexperia USA Inc.) For applications requiring automotive qualification, the 74HC86D-Q100,118 is AEC-Q100 qualified with active status and 3,375 pieces in stock. Extended operating temperature range (-40°C to 125°C) and 20ns propagation delay meet automotive requirements while maintaining electrical compatibility.

Not Recommended: NLV74HC86ADG Although this part offers extended temperature range and low quiescent current, its obsolete product status and 26ns propagation delay (exceeding the 20ns threshold) make it unsuitable for new designs.

Not Recommended: 74HCT245D,653 This part is a transceiver IC with fundamentally different logic type and pin configuration, making it incompatible with XOR gate applications.

Frequently Asked Questions (FAQ)

Q: Can I use SN74HC86DR as a direct replacement for SN74HC86DT? A: Yes. The SN74HC86DR is electrically identical to the SN74HC86DT with matching voltage supply range (2V-6V), propagation delay (17ns @ 6V, 50pF), output current (5.2mA), and operating temperature range (-40°C to 85°C). The packaging format difference (Cut Tape & Digi-Reel versus Tape & Reel) does not affect circuit performance.

Q: What is the difference between 14-SOIC and 14-SO packages? A: Both 14-SOIC and 14-SO refer to 14-pin surface mount packages with 0.154" (3.90mm) width. These designations are manufacturer-specific nomenclature for the same physical package. Pin configuration and spacing are identical, allowing direct PCB compatibility.

Q: Why do some substitutes have different propagation delays (20ns versus 17ns)? A: Propagation delay variation within the 15ns to 20ns range is within acceptable tolerance for the 74HC86 logic family. The original SN74HC86DT specifies 17ns maximum delay. Substitutes with 20ns delay remain functionally compatible for most applications, though timing-critical designs should verify margin requirements.

Q: Is the MC74HC86ADG suitable for my application if I need -40°C to 85°C operation? A: Yes. The MC74HC86ADG operates across -55°C to 125°C, which encompasses the -40°C to 85°C requirement. Extended temperature range provides additional margin without compromising performance within your specified operating window.

Q: What does AEC-Q100 qualification mean? A: AEC-Q100 is an automotive industry standard qualification that certifies component reliability for automotive applications. The 74HC86D-Q100,118 meets this qualification, making it suitable for automotive-grade designs. Non-automotive applications do not require this certification.

Q: Can I substitute parts with different quiescent current specifications? A: Yes, provided the substitute's quiescent current does not exceed your power budget. The original SN74HC86DT specifies 2µA maximum. Substitutes with 1µA (MC74HC86ADG, MC74HC86ADR2G, NLV74HC86ADG) consume less power and are compatible. The 74HC86S14-13 with 20µA quiescent current is compatible but consumes more power.

Q: Are all listed substitutes ROHS3 compliant? A: Most substitutes are ROHS3 compliant. Verify compliance documentation for specific part numbers if regulatory compliance is required for your application. The original SN74HC86DT is ROHS3 compliant, and all recommended active substitutes maintain this compliance.

Q: What inventory levels should I consider for supply chain planning? A: Current inventory levels range from 848 to 47,800 pieces across substitute options. The 74HC86S14-13 (Diodes Incorporated) offers the highest inventory at 47,800 pieces, followed by MM74HC86MX at 22,700 pieces and MC74HC86ADG at 12,000 pieces. These high-inventory options provide supply security for volume production.

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