ALD2301PAL Equivalent & Substitute Parts

Part Overview

The ALD2301PAL is a dual general-purpose comparator manufactured by Advanced Linear Devices Inc., available in 8-DIP through-hole packaging. This device is classified as an active product with ROHS3 compliance and unlimited moisture sensitivity rating. The ALD2301PAL operates across a supply voltage range of 3V to 10V (single supply) or ±1.5V to ±5V (dual supply), making it suitable for analog signal comparison applications requiring CMOS, NMOS, open-drain, or TTL output configurations. Equivalent and substitute parts are identified based on functional compatibility, electrical parameter alignment, and packaging interchangeability within the general-purpose comparator category.

Substiute Parts

ALD2301PAL

Advanced Linear Devices Inc.In Stock: 1147ALD2301PAL Datasheet

Current PartRFQ

TS393IDT

STMicroelectronicsIn Stock: 22813TS393IDT Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ALD2301PAL are identified based on the following critical parameters that determine functional and electrical compatibility:

Functional Equivalence Criteria:

• Dual comparator configuration (2 elements minimum)
• General-purpose comparator classification
• Output type compatibility: CMOS and open-drain outputs present in both main and substitute parts
• Supply voltage range overlap: Substitute must operate within or exceed the ALD2301PAL supply range (3V ~ 10V single supply)
• Input offset voltage performance: Substitute specifications must support comparable precision requirements
• Input bias current: Substitute must maintain acceptable input impedance characteristics
• Output current capability: Substitute must deliver sufficient drive current for intended load

Packaging Consideration: The ALD2301PAL uses 8-DIP through-hole packaging. Substitute parts may use alternative surface-mount packages (such as 8-SOIC) when circuit board design accommodates surface-mount technology, provided all electrical parameters remain compatible.

Compliance Baseline: All substitute parts must maintain ROHS3 compliance and active product status to ensure long-term availability and regulatory alignment.

Parameter Comparison

Engineering Selection Recommendations

TS393IDT Substitution Basis:

The TS393IDT qualifies as a functional substitute for the ALD2301PAL based on the following engineering criteria:

• Both devices are dual-element general-purpose comparators with active product status and ROHS3 compliance
• Output type compatibility exists: both provide CMOS and open-drain outputs
• Supply voltage range of TS393IDT (2.7V ~ 16V single supply) encompasses the ALD2301PAL operating range (3V ~ 10V)
• Input offset voltage of TS393IDT (5mV @ 10V) meets or exceeds precision requirements relative to ALD2301PAL (10mV @ 5V)
• Input bias current of TS393IDT (1pA @ 5V) demonstrates superior input impedance characteristics
• Quiescent current of TS393IDT (25µA) is significantly lower, reducing power consumption in battery-powered or low-power applications
• Extended operating temperature range (-40°C ~ 125°C) provides broader environmental compatibility

Package Transition Consideration:

The TS393IDT uses 8-SOIC surface-mount packaging versus the 8-DIP through-hole package of ALD2301PAL. This substitution requires circuit board redesign to accommodate surface-mount footprint and assembly process modification. Pin configuration remains functionally equivalent across both packages.

Output Current Limitation:

The TS393IDT provides 20mA typical output current compared to 60mA for the ALD2301PAL. Applications requiring maximum output current drive must verify load impedance compatibility with the reduced output capability of TS393IDT.

Frequently Asked Questions (FAQ)

Q: Can TS393IDT directly replace ALD2301PAL in existing through-hole circuit boards?

A: No. The TS393IDT uses 8-SOIC surface-mount packaging while ALD2301PAL uses 8-DIP through-hole packaging. Direct socket substitution is not possible. Circuit board redesign and component footprint modification are required.

Q: Are the pin configurations identical between ALD2301PAL and TS393IDT?

A: Both devices are dual comparators in 8-pin packages with functionally equivalent pin assignments. However, physical package dimensions differ significantly (DIP vs. SOIC), requiring board-level layout changes.

Q: What is the impact of reduced output current in TS393IDT (20mA vs. 60mA)?

A: Applications driving high-impedance loads or requiring direct TTL/CMOS logic level switching may operate within TS393IDT specifications. Applications requiring direct drive of low-impedance loads (below 250Ω) should verify load current requirements against the 20mA typical output current specification.

Q: Does TS393IDT support TTL output mode like ALD2301PAL?

A: TS393IDT output type is specified as CMOS and open-drain only. TTL output mode is not listed in the TS393IDT specification. Applications requiring TTL output compatibility must confirm output voltage levels meet TTL input thresholds under actual load conditions.

Q: What are the supply voltage compatibility ranges for substitution?

A: ALD2301PAL operates at 3V ~ 10V (single supply) or ±1.5V ~ 5V (dual supply). TS393IDT operates at 2.7V ~ 16V (single supply) or ±1.35V ~ 8V (dual supply). TS393IDT accommodates all ALD2301PAL supply configurations with extended range capability.

Q: Is the extended operating temperature range of TS393IDT (-40°C ~ 125°C) a functional advantage?

A: The extended temperature range of TS393IDT provides environmental flexibility for applications operating outside the ALD2301PAL range (0°C ~ 70°C). Applications within the 0°C ~ 70°C window experience no functional difference; extended range represents additional capability without performance degradation.

Q: What compliance certifications apply to both parts?

A: Both ALD2301PAL and TS393IDT maintain ROHS3 compliance, REACH unaffected status, and EAR99 export classification. Both devices carry unlimited moisture sensitivity rating (MSL 1). Regulatory and environmental compliance requirements are equivalent.