A3984SLPTR Equivalent & Substitute Parts

Part Overview

The A3984SLPTR is a bipolar stepper motor driver IC manufactured by Allegro MicroSystems, designed for fully integrated motor control and power stage applications. This device operates across a 3V to 5.5V supply voltage range and supports load voltages from 8V to 35V, making it suitable for general-purpose motor driving applications requiring step resolution options of 1, 1/2, 1/4, and 1/16.

The A3984SLPTR carries an obsolete product status. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and access components with active manufacturing support and improved compliance certifications.

Substiute Parts

A3984SLPTR

Allegro MicroSystemsIn Stock: 1655A3984SLPTR Datasheet

Current PartRFQ

A3984SLPTR-T

Allegro MicroSystemsIn Stock: 13722A3984SLPTR-T Datasheet

Parametric EquivalentRFQ

A4982SLPTR-T

Allegro MicroSystemsIn Stock: 2994A4982SLPTR-T Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the A3984SLPTR is determined by strict equivalence across the following critical parameters:

• Motor type classification (Bipolar stepper)
• Output configuration (Half Bridge with 4 outputs)
• Output current rating (2A)
• Supply voltage range (3V ~ 5.5V)
• Load voltage range (8V ~ 35V)
• Step resolution capabilities (1, 1/2, 1/4, 1/16)
• Operating temperature range (-20°C ~ 150°C)
• Package form factor (24-TSSOP with exposed pad)
• Interface type (Logic)
• Technology platform (DMOS)

All identified substitute parts maintain identical electrical and mechanical specifications across these parameters. Substitution is valid based on functional equivalence within the defined operational envelope.

Parameter Comparison

Engineering Selection Recommendations

Both A3984SLPTR-T and A4982SLPTR-T are functionally equivalent substitutes for the obsolete A3984SLPTR across all specified electrical and mechanical parameters.

The A3984SLPTR-T maintains the same base product number (A3984) as the original part and carries active product status with ROHS3 compliance certification. This part represents the direct replacement path for existing A3984SLPTR designs.

The A4982SLPTR-T, while based on a different base product number (A4982), provides identical functional performance and electrical specifications. This part also carries active product status and ROHS3 compliance certification.

Selection between these two substitutes should be based on supply chain availability, packaging format requirements (both offer Cut Tape and Digi-Reel options), and inventory levels. Both parts satisfy regulatory compliance requirements and support long-term design continuity.

Frequently Asked Questions (FAQ)

Q: Can A3984SLPTR-T and A4982SLPTR-T be used interchangeably in designs currently using A3984SLPTR?

A: Yes. Both substitute parts maintain identical electrical specifications, output configuration, current ratings, voltage ranges, step resolution capabilities, operating temperature range, and package form factor. Pin-to-pin compatibility and functional equivalence are confirmed across all specified parameters.

Q: What is the primary reason to transition from A3984SLPTR to an active substitute?

A: The A3984SLPTR is classified as obsolete. Active substitutes (A3984SLPTR-T and A4982SLPTR-T) ensure ongoing supply chain access, manufacturing support, and compliance with current regulatory standards including ROHS3 certification.

Q: Are there packaging differences between the main part and substitutes?

A: The A3984SLPTR is listed with unspecified packaging. Both substitutes are available in Cut Tape (CT) and Digi-Reel formats. All three parts use the identical 24-TSSOP package with exposed pad configuration.

Q: What is the difference in Moisture Sensitivity Level (MSL) between the main part and substitutes?

A: The A3984SLPTR carries MSL 1 (Unlimited shelf life). The substitutes carry MSL 2 (1 Year shelf life). This difference reflects standard handling and storage requirements for active production components and does not affect functional performance or electrical specifications.

Q: Which substitute should be selected for new designs?

A: Both A3984SLPTR-T and A4982SLPTR-T are suitable for new designs. Selection should be based on component availability, supply chain preferences, and inventory requirements. Both parts provide equivalent performance and regulatory compliance.