A3983SLPTR Equivalent & Substitute Parts

Part Overview

The A3983SLPTR 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 1/8.

The A3983SLPTR is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure component availability, and support ongoing production requirements for systems utilizing this motor driver architecture.

Substiute Parts

A3983SLPTR

Allegro MicroSystemsIn Stock: 2274A3983SLPTR Datasheet

Current PartRFQ

A3983SLPTR-T

Allegro MicroSystemsIn Stock: 36600A3983SLPTR-T Datasheet

DirectRFQ

A4984SLPTR-T

Allegro MicroSystemsIn Stock: 20824A4984SLPTR-T Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the A3983SLPTR is determined by strict equivalence across the following critical parameters:

Motor driver function and architecture (fully integrated control and power stage), output configuration (half bridge with 4 outputs), interface type (logic), technology platform (DMOS), step resolution capability (1, 1/2, 1/4, 1/8), output current rating (2A), supply voltage range (3V ~ 5.5V), load voltage range (8V ~ 35V), operating temperature range (-20°C ~ 150°C), package type (24-TSSOP with exposed pad), and mounting method (surface mount).

Two substitute parts meet these criteria: the A3983SLPTR-T (direct manufacturer equivalent with packaging variation) and the A4984SLPTR-T (parametric equivalent from the same manufacturer family).

Parameter Comparison

Engineering Selection Recommendations

The A3983SLPTR-T is the direct manufacturer equivalent, offering identical electrical and mechanical specifications with the primary distinction of active product status and ROHS3 compliance. This part is recommended as the primary substitute for obsolete A3983SLPTR applications requiring direct compatibility with existing designs and PCB layouts.

The A4984SLPTR-T is a parametric equivalent within the Allegro MicroSystems motor driver family, maintaining all critical electrical parameters and package specifications. This part is suitable for applications where the base product number change is acceptable and where ROHS3 compliance and active product status are required.

Both substitute parts are manufactured by Allegro MicroSystems and maintain full electrical and mechanical compatibility with the original A3983SLPTR specification. Selection between A3983SLPTR-T and A4984SLPTR-T depends on design flexibility regarding base product number changes and inventory availability requirements.

Frequently Asked Questions (FAQ)

Q: Can the A3983SLPTR-T be used as a direct replacement for the A3983SLPTR?

A: Yes. The A3983SLPTR-T maintains identical electrical specifications, output configuration, step resolution capability, voltage ratings, current ratings, operating temperature range, and package type. The primary differences are product status (active versus obsolete) and RoHS compliance certification.

Q: What is the difference between the A3983SLPTR-T and A4984SLPTR-T?

A: Both parts are parametric equivalents with identical electrical and mechanical specifications. The distinction is the base product number (A3983 versus A4984). Both are active products with ROHS3 compliance and equivalent motor driver functionality.

Q: Are there any package or pinout differences between these substitute parts?

A: No. All three parts use the 24-TSSOP package with exposed pad, identical pin configuration, and surface mount mounting type. PCB layouts and footprints are interchangeable.

Q: What is the significance of the RoHS compliance difference?

A: The A3983SLPTR is RoHS non-compliant, while both A3983SLPTR-T and A4984SLPTR-T are ROHS3 compliant. For applications subject to RoHS regulations or customer requirements, the compliant substitutes are necessary.

Q: How do the moisture sensitivity levels differ?

A: The A3983SLPTR has MSL 1 (unlimited shelf life), while both substitutes have MSL 2 (1 year shelf life). This affects storage and handling requirements but does not impact electrical performance or application compatibility.

Q: Are all three parts suitable for the same stepper motor applications?

A: Yes. All three parts support bipolar stepper motor driving with identical step resolution options (1, 1/2, 1/4, 1/8), output current (2A), and voltage specifications (3V ~ 5.5V supply, 8V ~ 35V load).