Part A
A3967SLBTR-T
компанией Allegro MicroSystems
- Lifecycle
- Active
- Stock
- 2159 ПКС
- Package
- SOIC-24
- Series
- PMIC - Драйверы двигателей, контроллеры
Replacement verdict
Compatible functional replacement candidate
The A3967SLBTR-T and A3967SLB-T are functionally equivalent microstepping motor driver ICs from Allegro MicroSystems, sharing the same die, electrical characteristics, and control interface. The only meaningful distinction is the packing format: the A3967SLBTR-T is supplied in tape and reel for automated assembly, while the A3967SLB-T is supplied in tube. For design-in and functional substitution purposes, either orderable part number can be used interchangeably on the same PCB, provided the assembly process matches the delivered packaging.
Function and Output Type
High match
Package and Footprint
High match
Electrical Ratings
High match
Packaging and Ordering
Validation required
Parts at a glance
Part B
A3967SLB-T
компанией Allegro MicroSystems
- Lifecycle
- Active
- Stock
- 9603 ПКС
- Package
- SOIC-24
- Series
- PMIC - Драйверы двигателей, контроллеры
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-T | A3967SLB-T | Why it matters |
|---|---|---|---|
| Manufacturer | Allegro MicroSystems | Allegro MicroSystems | Identical manufacturer ensures the same design, process, and quality standards for both parts. |
| Motor Type | Bipolar Stepper | Bipolar Stepper | Both devices must drive the same motor type to be functionally interchangeable in a given application. |
| Output Current per Channel | 750 mA | 750 mA | Matching current rating ensures the driver can supply the same torque and drive capability to the stepper motor. |
| Supply Voltage Range | 4.75 V to 5.25 V | 4.75 V to 5.25 V | Identical logic supply range guarantees compatibility with the same system power rails. |
| Output Voltage Range | 4.75 V to 30 V | 4.75 V to 30 V | Same motor supply range allows both parts to drive motors at the same voltage levels. |
| Mounting Type | Surface Mount | Surface Mount | Identical mounting ensures both parts fit the same PCB footprint and assembly process. |
| Package / Case | 24-SOIC (0.295", 7.50mm Width) | 24-SOIC (0.295", 7.50mm Width) | Package and case dimensions determine PCB layout compatibility and thermal performance. |
| Packaging | Tape & Reel (TR) | Tube | Different packaging affects handling, automated assembly, and minimum order quantities, though the die and function are the same. |
| Operating Temperature | -20°C to 85°C | -20°C to 85°C | Matching temperature range ensures both parts perform reliably in the same environmental conditions. |
| Interface | Step / Direction | Step / Direction | Same control interface allows drop-in replacement without firmware or logic changes. |
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-T | A3967SLB-T |
|---|---|---|
| Part Status | Active | 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
What is the difference between the A3967SLBTR-T and the A3967SLB-T?
The A3967SLBTR-T and A3967SLB-T are the same Allegro MicroSystems A3967 microstepping motor driver die in the same 16-pin SOIC package. The suffix difference is packaging: the A3967SLBTR-T is supplied in tape and reel, while the A3967SLB-T is supplied in tube. Electrical and functional specifications are identical.
Are the A3967SLBTR-T and A3967SLB-T electrically and functionally interchangeable?
Yes. Both orderable part numbers use the same A3967SLB device and the same 16-lead SOIC (suffix LB) package. They differ only in shipping media, so they are interchangeable in a design provided the board accepts the SOIC-16 footprint.
What is the function of the A3967SLBTR-T and A3967SLB-T?
Both are complete microstepping motor driver ICs with built-in translators. They are designed to operate bipolar stepper motors in full-, half-, quarter-, and eighth-step modes, with output drive capability up to 30 V and ±750 mA per winding, and include internal fixed off-time current control with selectable slow, fast, or mixed decay modes.
What package do the A3967SLBTR-T and A3967SLB-T use?
Both devices are supplied in the Allegro LB package, a 16-pin SOIC with a 0.300-inch (7.50 mm) body width. The package suffix LB in the part number identifies this SOIC-16 package.
What supply voltage range do the A3967SLBTR-T and A3967SLB-T require?
Both devices operate from a logic supply (VCC) of 3.0 V to 5.5 V and a motor supply (VS) of 4.75 V to 30 V, as specified in the Allegro A3967 datasheet.
Can the A3967SLBTR-T and A3967SLB-T be used as drop-in replacements for each other on an existing PCB?
Yes, because both are the same A3967SLB device in the same 16-pin SOIC package with identical pinout and electrical characteristics. The only difference is the shipping format (tape and reel versus tube), which does not affect PCB assembly or electrical performance.
Which orderable part number should be selected for automated pick-and-place assembly?
The A3967SLBTR-T is the tape-and-reel option and is typically selected for automated pick-and-place assembly lines. The A3967SLB-T is the tube option and is generally used for manual assembly or low-volume prototyping.
Do the A3967SLBTR-T and A3967SLB-T have the same operating temperature range?
Yes. Both orderable part numbers use the same A3967SLB device and therefore share the same operating ambient temperature range of -20 °C to +85 °C as specified in the Allegro A3967 datasheet.