ALD2302APAL Equivalent & Substitute Parts

Part Overview

The ALD2302APAL is a general-purpose dual comparator IC manufactured by Advanced Linear Devices Inc. in 8-DIP through-hole packaging. This device features CMOS, NMOS, push-pull, and TTL output configurations with a supply voltage range of 4V to 10V (single) or ±2V to ±5V (dual). The part is currently active in production with 2070 units in stock inventory.

Substitute parts are necessary when the original ALD2302APAL is unavailable, when alternative packaging formats are required for specific PCB designs, or when surface-mount technology is preferred over through-hole construction. The substitute parts listed maintain functional equivalence within the specified electrical and mechanical parameters.

Key Parameters

Parameter	Value
Manufacturer Part Number	ALD2302APAL
Manufacturer	Advanced Linear Devices Inc.
Category	Linear
Type	General Purpose Comparator
Number of Elements	2
Output Type	CMOS, NMOS, Push-Pull, TTL
Voltage - Supply, Single/Dual (±)	4V ~ 10V, ±2V ~ 5V
Voltage - Input Offset (Max)	1mV @ 5V
Current - Input Bias (Max)	0.001µA @ 5V
Current - Output (Typ)	60mA
Current - Quiescent (Max)	500µA
Operating Temperature	0°C ~ 70°C
Package / Case	8-DIP (0.300", 7.62mm)
Mounting Type	Through Hole
Product Status	Active
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the ALD2302APAL is determined by the following critical parameters:

Functional Equivalence Criteria:

Dual comparator configuration (2 elements)
General-purpose comparator type
Output type compatibility (CMOS, Push-Pull, or Rail-to-Rail acceptable)
Supply voltage range overlap with 4V ~ 10V single supply or ±2V ~ ±5V dual supply
Input offset voltage ≤ 5mV @ 5V
Input bias current ≤ 250pA @ 15V or equivalent
Quiescent current ≤ 500µA
Operating temperature range that includes or exceeds 0°C ~ 70°C

Packaging Considerations: Substitutes are available in three package formats: 8-DIP through-hole (direct replacement), 8-SOIC surface-mount, and 8-VSSOP surface-mount. Selection depends on PCB design requirements and assembly capabilities.

Product Status: Active-status parts are preferred for new designs. Obsolete parts (TLV3702CD, TLV3702CDGK, TLV3702ID) are available from existing inventory but should not be selected for new production designs.

Parameter Comparison

Part Number	Manufacturer	Package	Mounting	Supply Voltage	Input Offset (Max)	Input Bias (Max)	Quiescent Current (Max)	Output Type	Temp Range	Status
ALD2302APAL	Advanced Linear Devices	8-DIP	Through Hole	4V~10V, ±2V~5V	1mV @ 5V	0.001µA @ 5V	500µA	CMOS, NMOS, Push-Pull, TTL	0°C ~ 70°C	Active
MAX9017AEKA+T	Analog Devices/Maxim	SOT-23-8	Surface Mount	1.8V~5.5V	5mV @ 5V	0.001µA @ 5V	2.8µA	CMOS, Push-Pull, Rail-to-Rail	-40°C ~ 85°C	Active
MAX9077ESA+	Analog Devices/Maxim	8-SOIC	Surface Mount	2.1V~5.5V	1mV @ 5V	0.005µA @ 5V	6.6µA	Push-Pull, Rail-to-Rail	-40°C ~ 85°C	Active
MAX976ESA+T	Analog Devices/Maxim	8-SOIC	Surface Mount	2.7V~5.5V	2mV @ 5V	0.075µA @ 5.5V	650µA	Push-Pull, Rail-to-Rail	-40°C ~ 85°C	Active
TLV3492AMDREP	Texas Instruments	8-SOIC	Surface Mount	1.8V~5.5V	15mV @ 5.5V	10pA @ 5.5V	2.1µA	CMOS, Push-Pull, Rail-to-Rail	-55°C ~ 125°C	Active
TLV3702CD	Texas Instruments	8-SOIC	Surface Mount	2.5V~16V, ±1.25V~8V	5mV @ 15V	250pA @ 15V	1µA	CMOS, Push-Pull, Rail-to-Rail	0°C ~ 70°C	Obsolete
TLV3702CDGK	Texas Instruments	8-VSSOP	Surface Mount	2.5V~16V, ±1.25V~8V	5mV @ 15V	250pA @ 15V	1µA	CMOS, Push-Pull, Rail-to-Rail	0°C ~ 70°C	Obsolete
TLV3702ID	Texas Instruments	8-SOIC	Surface Mount	2.7V~16V, ±1.35V~8V	5mV @ 15V	250pA @ 15V	1µA	CMOS, Push-Pull, Rail-to-Rail	-40°C ~ 125°C	Obsolete

Engineering Selection Recommendations

For Through-Hole PCB Designs: The ALD2302APAL remains the only through-hole option among the listed substitutes. No direct through-hole replacement is available. If through-hole mounting is required, the original part must be sourced or the PCB design must be modified to accommodate surface-mount alternatives.

For Surface-Mount Designs with Active Product Status:

MAX9077ESA+ provides the closest electrical match with 1mV input offset voltage and operates within the 0°C ~ 70°C temperature range of the original part. This part is available in 8-SOIC packaging with 2100 units in stock.
MAX9017AEKA+T offers the lowest quiescent current (2.8µA) and extended temperature range (-40°C ~ 85°C) in a compact SOT-23-8 package, suitable for space-constrained applications.
MAX976ESA+T provides superior CMRR and PSRR specifications (95dB and 100dB respectively) with the fastest propagation delay (28ns) among active substitutes.
TLV3492AMDREP extends the operating temperature range to -55°C ~ 125°C and offers the lowest input bias current (10pA), suitable for precision applications requiring extended temperature operation.

For Compliance and Certification: All listed parts maintain ROHS3 compliance, REACH unaffected status, and EAR99 ECCN classification. Moisture sensitivity level is 1 (unlimited) for all parts, indicating no special handling requirements.

Obsolete Parts: TLV3702CD, TLV3702CDGK, and TLV3702ID are marked as obsolete and should not be selected for new production designs. These parts are available from existing inventory (1340, 4303, and 77783 units respectively) but represent end-of-life products.

Frequently Asked Questions (FAQ)

Q: Can MAX9017AEKA+T replace ALD2302APAL in a through-hole design? A: No. MAX9017AEKA+T is a surface-mount SOT-23-8 package and cannot be directly installed in a through-hole 8-DIP footprint. PCB redesign or use of an adapter is required.

Q: What is the key difference between MAX9077ESA+ and MAX976ESA+T? A: Both are 8-SOIC surface-mount parts with similar supply voltage ranges. MAX976ESA+T has superior CMRR/PSRR specifications (95dB/100dB vs. 82dB/77dB) and faster propagation delay (28ns vs. 580ns), making it suitable for high-speed applications. MAX9077ESA+ has lower quiescent current (6.6µA vs. 650µA), making it preferable for low-power designs.

Q: Are the TLV3702 series parts suitable for new designs? A: TLV3702CD, TLV3702CDGK, and TLV3702ID are all marked as obsolete. While inventory is available, these parts should not be selected for new production designs. Active alternatives such as MAX9077ESA+ or TLV3492AMDREP are recommended.

Q: What is the minimum supply voltage for each substitute? A: ALD2302APAL: 4V (single) or ±2V (dual); MAX9017AEKA+T: 1.8V; MAX9077ESA+: 2.1V; MAX976ESA+T: 2.7V; TLV3492AMDREP: 1.8V; TLV3702 series: 2.5V (single) or ±1.25V (dual).

Q: Which substitute has the lowest input offset voltage? A: ALD2302APAL and MAX9077ESA+ both specify 1mV input offset voltage at 5V, providing the tightest offset specification among active parts.

Q: Can I use TLV3492AMDREP in applications requiring 0°C ~ 70°C operation? A: Yes. TLV3492AMDREP operates from -55°C ~ 125°C, which exceeds the 0°C ~ 70°C requirement. However, the part specifies 15mV input offset voltage at 5.5V, which is higher than the ALD2302APAL's 1mV specification.

Q: What packaging options are available for surface-mount substitution? A: Three surface-mount packages are available: SOT-23-8 (MAX9017AEKA+T), 8-SOIC (MAX9077ESA+, MAX976ESA+T, TLV3492AMDREP, TLV3702CD, TLV3702ID), and 8-VSSOP (TLV3702CDGK).

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