Part A
A3967SLBTR
Allegro MicroSystems
- Lifecycle
- Active
- Stock
- 5033 PCS
- Package
- SOIC-24
- Series
- PMIC - Motor Drivers, Controllers
Replacement verdict
Compatible functional replacement candidate
The A3967SLBTR and A3967SLB-T are functionally equivalent microstepping motor driver ICs from Allegro MicroSystems, sharing the same silicon design, electrical characteristics, and control interface. The only meaningful distinction is the packing and ordering suffix, making either part a valid functional substitute for the other in the same application.
Function and Output Type
High match
Package Type
High match
Electrical Ratings
High match
Ordering and Packing Format
Validation required
Parts at a glance
Part B
A3967SLB-T
Allegro MicroSystems
- Lifecycle
- Active
- Stock
- 9603 PCS
- Package
- SOIC-24
- Series
- PMIC - Motor Drivers, Controllers
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | A3967SLBTR | A3967SLB-T | Why it matters |
|---|---|---|---|
| Manufacturer | Allegro MicroSystems | Allegro MicroSystems | Same manufacturer ensures consistent design, documentation, and quality standards. |
| Function | Microstepping motor driver with built-in translator | Microstepping motor driver with built-in translator | Identical function confirms the parts are functionally interchangeable for the same application. |
| Output Current per Channel | 750 mA | 750 mA | Matching current rating ensures the driver can handle the same motor load without derating. |
| Supply Voltage Range | 4.5 V to 5.5 V (logic), motor supply up to 30 V | 4.5 V to 5.5 V (logic), motor supply up to 30 V | Same voltage range means the parts can be used in identical power supply designs. |
| Microstepping Resolution | Full, half, quarter, eighth step | Full, half, quarter, eighth step | Identical microstepping options preserve motion smoothness and positioning accuracy. |
| Package / Case | 24-SOIC (0.295", 7.50mm Width) | 24-SOIC (0.295", 7.50mm Width) | Same package footprint allows drop-in replacement on existing PCBs. |
| Mounting Type | Surface Mount | Surface Mount | Same mounting method ensures compatibility with the same assembly process. |
| Operating Temperature Range | -20°C to +85°C | -20°C to +85°C | Identical temperature range guarantees the same thermal performance in the application. |
| Packaging / Ordering Suffix | Tape and Reel (TR) | Tube | Different packaging affects handling, storage, and assembly line feed method, though the die and performance are the same. |
Need help validating a replacement?
Send your BOM and application constraints for technical and sourcing review.
Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | A3967SLBTR | A3967SLB-T |
|---|---|---|
| Part Status | Obsolete | Obsolete |
| Motor Type - Stepper | Bipolar | Bipolar |
| Function | Driver - Fully Integrated, Control and Power Stage | Driver - Fully Integrated, Control and Power Stage |
| Output Configuration | Half Bridge (4) | Half Bridge (4) |
| Interface | Logic | Logic |
| Technology | Bipolar | Bipolar |
| Step Resolution | 1, 1/2, 1/4, 1/8 | 1, 1/2, 1/4, 1/8 |
| Applications | General Purpose | General Purpose |
| Current - Output | 750mA | 750mA |
| Voltage - Supply | 3V ~ 5.5V | 3V ~ 5.5V |
| Voltage - Load | 4.75V ~ 30V | 4.75V ~ 30V |
| Operating Temperature | -20°C ~ 150°C (TJ) | -20°C ~ 150°C (TJ) |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
Are the A3967SLBTR and A3967SLB-T functionally identical?
Yes. Both part numbers refer to the Allegro MicroSystems A3967 easy-to-use stepper motor driver with a built-in translator. The A3967SLBTR and A3967SLB-T share the same die, electrical specifications, and functional features. The difference is in the ordering suffix, which designates packaging and shipping format rather than device functionality.
What is the difference between the A3967SLBTR and A3967SLB-T?
The suffix difference relates to packaging and shipment format. The A3967SLBTR is typically supplied in tape and reel packaging for automated assembly, while the A3967SLB-T is supplied in tube or bulk packaging. Both use the same 24-pin SOIC-W (wide-body) package and are electrically identical.
Can the A3967SLBTR and A3967SLB-T be used interchangeably in a design?
Yes, provided the PCB assembly process supports the respective packaging format. Since both devices are electrically and functionally identical and use the same 24-pin SOIC-W package footprint, they can be interchanged in the same PCB land pattern. The choice between them is typically driven by manufacturing preferences for tape and reel versus tube feeding.
What is the output current rating of the A3967SLBTR and A3967SLB-T?
Both devices are rated for a maximum output current of ±750 mA per channel, with a peak output current of ±800 mA. These ratings apply to both the A3967SLBTR and A3967SLB-T, as they share identical electrical specifications.
What is the operating voltage range for the A3967SLBTR and A3967SLB-T?
Both devices operate with a motor supply voltage (VBB) range of 4.75 V to 30 V. The logic supply voltage (VCC) range is 3.0 V to 5.5 V. These specifications are identical for the A3967SLBTR and A3967SLB-T.
Do the A3967SLBTR and A3967SLB-T support microstepping?
Yes. Both devices include a built-in translator that supports full-step, half-step, quarter-step, and eighth-step microstepping modes. The microstepping resolution is selected via the MS1 and MS2 logic inputs, and this functionality is identical across both part numbers.
What package type do the A3967SLBTR and A3967SLB-T use?
Both devices are housed in a 24-pin SOIC-W (wide-body) package with a 0.300-inch body width. The package designation "SLB" in both part numbers confirms the same package type. Thermal and mechanical characteristics are identical between the two variants.
Are the A3967SLBTR and A3967SLB-T RoHS compliant?
Allegro MicroSystems offers both the A3967SLBTR and A3967SLB-T in RoHS-compliant versions. The "TR" and "-T" suffixes indicate packaging format, not compliance status. Designers should verify the specific ordering code and date code against the manufacturer's latest product datasheet or RoHS declaration to confirm compliance for a given lot.