ALD2331APAL Equivalent & Substitute Parts

Part Overview

The ALD2331APAL is a dual-channel general purpose comparator manufactured by Advanced Linear Devices Inc. in 8-DIP through-hole packaging. This CMOS/NMOS comparator with open-drain and TTL output options operates across 3V to 10V single supply or ±1.5V to ±5V dual supply configurations. The device is Active product status with ROHS3 compliance and unlimited moisture sensitivity rating, making it suitable for industrial and commercial applications requiring precision voltage comparison.

Substitute parts are identified when equivalent functional performance can be maintained within the specified electrical and mechanical parameter ranges for this comparator category.

Substiute Parts

ALD2331APAL

Advanced Linear Devices Inc.In Stock: 1009ALD2331APAL Datasheet

Current PartRFQ

TS372IDT

STMicroelectronicsIn Stock: 19197TS372IDT Datasheet

SimilarRFQ

TS393IYDT

STMicroelectronicsIn Stock: 29370TS393IYDT Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ALD2331APAL is determined by the following critical parameters:

Functional Compatibility Criteria:

• Dual-channel comparator configuration (2 elements minimum)
• General purpose or differential comparator type
• Output stage compatibility: CMOS, Open-Drain, or TTL output types
• Supply voltage range overlap with 3V ~ 10V single supply or ±1.5V ~ 5V dual supply
• Input offset voltage performance at rated supply voltage
• Input bias current specifications
• Output current capability minimum 20mA
• Quiescent current within acceptable operating envelope

Package Compatibility:

• Through-hole or surface-mount packages acceptable based on application requirements
• Pin count: 8-pin configuration

The identified substitute parts (TS372IDT and TS393IYDT) meet these criteria with extended supply voltage ranges, improved temperature operating windows, and maintained output drive capability, while maintaining functional equivalence within the specified parameter space.

Parameter Comparison

Engineering Selection Recommendations

ALD2331APAL Primary Application: Select the ALD2331APAL for through-hole PCB designs requiring a general purpose dual comparator with 0.5mV input offset accuracy and 50mA output drive capability within the 0°C to 70°C commercial temperature range. ROHS3 compliance and unlimited moisture sensitivity support standard industrial applications.

TS372IDT Substitution Conditions: The TS372IDT provides differential comparator functionality with extended supply voltage range (3V ~ 16V single, ±1.5V ~ 8V dual) and expanded operating temperature (-40°C ~ 125°C). Surface-mount 8-SOIC packaging requires PCB redesign. Input offset voltage of 10mV and reduced output current (20mA) represent functional trade-offs. ROHS3 compliance maintained. Select when extended temperature operation and higher supply voltage tolerance are required.

TS393IYDT Substitution Conditions: The TS393IYDT offers general purpose comparator operation with the lowest quiescent current (25µA) and extended supply voltage range (2.7V ~ 16V single, ±1.35V ~ 8V dual). Operating temperature extends to -40°C ~ 125°C. Surface-mount 8-SOIC packaging requires PCB redesign. Input offset voltage of 5mV and reduced output current (20mA) represent functional trade-offs. AEC-Q100 automotive qualification and ROHS3 compliance support automotive and extended-temperature applications. Select when power consumption minimization and extended temperature operation are prioritized.

All substitute parts maintain ROHS3 compliance and Active product status equivalent to the ALD2331APAL.

Frequently Asked Questions (FAQ)

Q: Can TS372IDT or TS393IYDT directly replace ALD2331APAL in existing through-hole designs?

A: No. Both substitute parts use 8-SOIC surface-mount packaging versus the 8-DIP through-hole package of the ALD2331APAL. PCB redesign and adapter solutions are required for direct substitution in through-hole applications.

Q: What are the key electrical differences between ALD2331APAL and TS393IYDT?

A: The TS393IYDT provides lower quiescent current (25µA vs. 180µA), extended supply voltage range (2.7V ~ 16V vs. 3V ~ 10V), and wider operating temperature (-40°C ~ 125°C vs. 0°C ~ 70°C). Trade-offs include higher input offset voltage (5mV vs. 0.5mV) and reduced output current (20mA vs. 50mA).

Q: Is the TS393IYDT suitable for automotive applications?

A: Yes. The TS393IYDT carries AEC-Q100 automotive qualification and operates across -40°C ~ 125°C, making it suitable for automotive temperature and reliability requirements. The ALD2331APAL and TS372IDT lack automotive qualification.

Q: What is the primary advantage of TS372IDT over ALD2331APAL?

A: The TS372IDT provides differential comparator functionality with extended supply voltage range (up to ±8V dual supply) and expanded operating temperature (-40°C ~ 125°C). It is suitable for applications requiring differential input stage operation beyond the ALD2331APAL's general purpose configuration.

Q: Can output current differences affect circuit performance?

A: Yes. The ALD2331APAL provides 50mA typical output current versus 20mA for both TS372IDT and TS393IYDT. Applications requiring high-current output drive or direct TTL/CMOS logic loading may require output buffering when using substitute parts with reduced output current specifications.

Q: Are all three parts RoHS compliant?

A: Yes. ALD2331APAL, TS372IDT, and TS393IYDT are all ROHS3 compliant with unlimited moisture sensitivity rating (MSL 1).