MAX516ACWG+ Equivalent & Substitute Parts

Part Overview

The MAX516ACWG+ is a 4-channel general-purpose comparator manufactured by Analog Devices Inc./Maxim Integrated, housed in a 24-SOIC surface-mount package. This device operates across a supply voltage range of 4.75V to 16.5V with CMOS and TTL output compatibility, making it suitable for signal conditioning and threshold detection applications. The part is currently in active production status with 792 units in stock.

Substitute parts are necessary when the original MAX516ACWG+ becomes unavailable, when alternative packaging formats are required for design modifications, or when extended operating temperature ranges or enhanced performance characteristics are needed for specific application requirements.

Key Parameters

Parameter	Value
Manufacturer	Analog Devices Inc./Maxim Integrated
Part Number	MAX516ACWG+
Category	Linear - Comparator
Type	General Purpose
Number of Elements	4
Output Type	CMOS, TTL
Supply Voltage Range	4.75V ~ 16.5V
Input Bias Current (Max)	0.3µA @ 16.5V
Quiescent Current (Max)	10mA
Propagation Delay (Max)	1.5µs
Operating Temperature	0°C ~ 70°C
Package	24-SOIC (0.295", 7.50mm Width)
Mounting Type	Surface Mount
Product Status	Active
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the MAX516ACWG+ is determined by the following critical parameters:

Primary Substitution Criteria:

Number of comparator elements: 4 channels required
Output type compatibility: CMOS and/or TTL output capability
Supply voltage range: Minimum 4.75V support required
Input bias current: Maximum 0.3µA @ 16.5V or equivalent specification
Quiescent current: Maximum 10mA or lower
Propagation delay: Maximum 1.5µs or faster
Operating temperature range: Minimum 0°C to 70°C coverage
Package compatibility: Surface-mount or through-hole options acceptable
Product status: Active or recently active parts only
Compliance: ROHS3 compliant, REACH unaffected

The substitute parts identified (LM239J, LM239PT, LM239QT, LM2901M, LM2901Q4T, LM2901VDTBR2G, LM2901YDT, LM339DT, MC3302DR2G) meet these core electrical and mechanical requirements while offering variations in package format, temperature range, and output type configurations.

Parameter Comparison

Part Number	Manufacturer	Elements	Output Type	Supply Voltage	Input Bias Current (Max)	Quiescent Current (Max)	Operating Temp	Package	Mounting	Status
MAX516ACWG+	Analog Devices/Maxim	4	CMOS, TTL	4.75V ~ 16.5V	0.3µA @ 16.5V	10mA	0°C ~ 70°C	24-SOIC	Surface Mount	Active
LM239J	Texas Instruments	4	Open-Collector	2V ~ 36V, ±1V ~ 18V	0.25µA @ 5V	2.5mA	-25°C ~ 85°C	14-CDIP	Through Hole	Active
LM239PT	STMicroelectronics	4	CMOS, DTL, ECL, MOS, Open-Collector, TTL	2V ~ 32V, ±1V ~ 16V	0.25µA @ 5V	2mA	-40°C ~ 105°C	14-TSSOP	Surface Mount	Active
LM239QT	STMicroelectronics	4	CMOS, DTL, ECL, MOS, Open-Collector, TTL	2V ~ 36V, ±1V ~ 18V	0.25µA @ 5V	2mA	-40°C ~ 105°C	16-QFN (3x3)	Surface Mount	Active
LM2901M	onsemi	4	DTL, MOS, Open-Collector, TTL	2V ~ 36V, ±1V ~ 18V	0.25µA @ 5V	2.5mA	-40°C ~ 85°C	14-SOIC	Surface Mount	Obsolete
LM2901Q4T	STMicroelectronics	4	CMOS, DTL, MOS, Open-Collector, TTL	2V ~ 36V, ±1V ~ 18V	—	2.5mA	—	16-QFN (3x3)	Surface Mount	Active
LM2901VDTBR2G	onsemi	4	CMOS, Open-Collector, TTL	3V ~ 36V, ±1.5V ~ 18V	0.25µA @ 5V	2.5mA	-40°C ~ 125°C	14-TSSOP	Surface Mount	Active
LM2901YDT	STMicroelectronics	4	CMOS, DTL, ECL, MOS, Open-Collector, TTL	2V ~ 32V, ±1V ~ 16V	0.25µA @ 5V	2.5mA	-40°C ~ 125°C	14-SOIC	Surface Mount	Active
LM339DT	STMicroelectronics	4	CMOS, DTL, ECL, MOS, Open-Collector, TTL	2V ~ 32V, ±1V ~ 16V	0.25µA @ 5V	2.5mA	0°C ~ 70°C	14-SOIC	Surface Mount	Active
MC3302DR2G	onsemi	4	CMOS, Open-Collector, TTL	3V ~ 30V, ±1.5V ~ 15V	0.5µA @ 5V	2.5mA	-40°C ~ 85°C	14-SOIC	Surface Mount	Active

Engineering Selection Recommendations

LM339DT (STMicroelectronics) provides the closest functional match to the MAX516ACWG+. Both devices operate within the 0°C to 70°C temperature range, feature 4-channel general-purpose comparator architecture, and are housed in 14-SOIC surface-mount packages. The LM339DT is ROHS3 compliant with unlimited MSL rating, matching the compliance profile of the original part. This option is recommended for direct replacement in existing designs with minimal circuit modifications.

LM239PT (STMicroelectronics) and LM239QT (STMicroelectronics) extend the operating temperature range to -40°C to 105°C, suitable for applications requiring enhanced thermal performance. Both maintain ROHS3 compliance and active product status. The LM239PT uses 14-TSSOP packaging while LM239QT employs 16-QFN format, offering space-optimized alternatives for PCB layout constraints.

LM2901VDTBR2G (onsemi) supports the widest operating temperature range (-40°C to 125°C) among active substitutes, with ROHS3 compliance and active status. This part is appropriate for automotive or industrial applications requiring extended thermal specifications.

LM2901M (onsemi) is marked as obsolete and should be avoided for new designs, despite meeting electrical specifications.

All recommended active substitutes maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment with the original MAX516ACWG+.

Frequently Asked Questions (FAQ)

Q: Can LM339DT directly replace MAX516ACWG+ without circuit modifications?

A: LM339DT shares identical operating temperature range (0°C to 70°C), 4-channel architecture, and comparable electrical specifications. However, the package differs (14-SOIC versus 24-SOIC), requiring PCB layout adjustments. Pin configuration must be verified against datasheets before implementation.

Q: What is the primary difference between LM239 and LM2901 series substitutes?

A: Both series provide 4-channel general-purpose comparators with similar electrical performance. The LM239 series (LM239J, LM239PT, LM239QT) typically offers extended temperature ranges and broader supply voltage compatibility. The LM2901 series (LM2901M, LM2901Q4T, LM2901VDTBR2G, LM2901YDT) provides comparable functionality with variations in package format and temperature specifications.

Q: Which substitute offers the best thermal performance?

A: LM2901VDTBR2G supports -40°C to 125°C operating range, the widest among active alternatives. This part is suitable for applications requiring extended high-temperature operation while maintaining ROHS3 compliance and active product status.

Q: Are through-hole packages available as substitutes?

A: LM239J (Texas Instruments) is available in 14-CDIP through-hole packaging. This option is appropriate for designs requiring through-hole mounting, though it extends the operating temperature range to -25°C to 85°C compared to the original 0°C to 70°C specification.

Q: What packaging options are available for surface-mount designs?

A: Surface-mount alternatives include 14-SOIC (LM2901YDT, LM339DT, MC3302DR2G), 14-TSSOP (LM239PT, LM2901VDTBR2G), and 16-QFN (LM239QT, LM2901Q4T). Selection depends on PCB layout constraints and thermal management requirements.

Q: Is MC3302DR2G suitable for high-voltage applications?

A: MC3302DR2G supports 3V to 30V single supply or ±1.5V to ±15V dual supply operation. This range is narrower than the original MAX516ACWG+ (4.75V to 16.5V) and some alternatives. Verify supply voltage compatibility before selection.

Q: What compliance certifications apply to all recommended substitutes?

A: All active substitute parts listed are ROHS3 compliant and REACH unaffected, matching the regulatory profile of the MAX516ACWG+. Automotive-grade variants (such as LM2901YDT with AEC-Q100 qualification) are available for applications requiring automotive qualification.

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