ALD2301APAL Equivalent & Substitute Parts

Part Overview

The ALD2301APAL is a general-purpose dual comparator IC manufactured by Advanced Linear Devices Inc. in 8-DIP through-hole packaging. This device features CMOS, NMOS, open-drain, and TTL output configurations with a supply voltage range of 3V to 10V (single) or ±1.5V to 5V (dual). The part is currently active and in production with 949 units in stock.

Substitute parts are necessary when design requirements include surface-mount packaging, extended temperature ranges, automotive qualification, or alternative supply voltage specifications that exceed the original part's capabilities.

Substiute Parts

ALD2301APAL

Advanced Linear Devices Inc.In Stock: 974ALD2301APAL Datasheet

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TS372CDT

STMicroelectronicsIn Stock: 10500TS372CDT Datasheet

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TS372IDT

STMicroelectronicsIn Stock: 19197TS372IDT Datasheet

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TS393CDT

STMicroelectronicsIn Stock: 19101TS393CDT Datasheet

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TS393IYDT

STMicroelectronicsIn Stock: 29370TS393IYDT Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ALD2301APAL is determined by the following criteria:

Functional Compatibility: All substitute parts must be dual-element comparators with general-purpose or differential configurations and matching output types (CMOS, open-drain, or TTL).

Electrical Parameters: Supply voltage range must encompass or exceed the original specification (3V ~ 10V single, ±1.5V ~ 5V dual). Input offset voltage, input bias current, output current, and quiescent current must be within acceptable operating margins for the application.

Package and Mounting: Substitutes may use surface-mount packaging (8-SOIC) as an alternative to through-hole (8-DIP), provided PCB design accommodates the different form factor.

Temperature and Compliance: Extended operating temperature ranges (-40°C ~ 125°C) and automotive qualifications (AEC-Q100) are available in substitute options for applications requiring enhanced environmental performance.

Packaging Format: Substitute parts are available in tape & reel (TR) or cut tape (CT) & Digi-Reel® formats, differing from the original tube packaging.

Parameter Comparison

Engineering Selection Recommendations

TS393CDT and TS393IYDT: These general-purpose comparators provide the closest functional match to the ALD2301APAL. Both feature CMOS and open-drain outputs with extended supply voltage ranges (2.7V ~ 16V). The TS393IYDT variant includes automotive qualification (AEC-Q100) and extended temperature range (-40°C ~ 125°C), making it suitable for industrial and automotive applications. The TS393CDT operates within the standard commercial temperature range (0°C ~ 70°C).

TS372CDT and TS372IDT: These differential comparators offer extended supply voltage capability (3V ~ 16V) and are available in both standard and extended temperature grades. The TS372IDT provides the extended temperature range (-40°C ~ 125°C) for demanding environments. These parts are suitable when differential input configuration is acceptable.

Packaging Transition: All STMicroelectronics substitutes use 8-SOIC surface-mount packaging instead of 8-DIP through-hole. This requires PCB redesign and reflow soldering processes. For applications requiring through-hole mounting, the ALD2301APAL remains the only option among these parts.

Compliance: All parts maintain ROHS3 compliance and active product status, ensuring long-term availability and regulatory alignment.

Frequently Asked Questions (FAQ)

Q: Can TS393IYDT replace ALD2301APAL in a through-hole PCB design? A: No. The TS393IYDT uses 8-SOIC surface-mount packaging, while the ALD2301APAL uses 8-DIP through-hole. PCB redesign is required to accommodate the different form factor and mounting method.

Q: What is the key difference between TS393CDT and TS393IYDT? A: Both are general-purpose dual comparators with identical electrical specifications. The TS393IYDT includes automotive qualification (AEC-Q100) and operates across an extended temperature range (-40°C ~ 125°C), compared to the TS393CDT's standard range (0°C ~ 70°C).

Q: Are TS372CDT and TS372IDT functionally equivalent to ALD2301APAL? A: Both TS372 variants are differential comparators, whereas the ALD2301APAL is a general-purpose comparator. Differential configuration may not be compatible with all circuit designs. Verify input signal requirements before substitution.

Q: Which substitute part has the lowest quiescent current? A: The TS393CDT and TS393IYDT both feature 25µA maximum quiescent current, significantly lower than the ALD2301APAL's 180µA. This makes them suitable for power-sensitive applications.

Q: Do all substitute parts support the same supply voltage as the original? A: All substitutes support the ALD2301APAL's supply voltage range (3V ~ 10V single, ±1.5V ~ 5V dual) and exceed it. The STMicroelectronics parts extend to 2.7V ~ 16V (single) or ±1.35V ~ 8V (dual), providing greater flexibility.

Q: What packaging formats are available for substitute parts? A: TS372CDT is supplied in tape & reel (TR) format. TS372IDT, TS393CDT, and TS393IYDT are supplied in cut tape (CT) & Digi-Reel® format. The original ALD2301APAL is supplied in tube packaging.