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PCB-mount discrete drivers

IM481H 1.5 A Microstepping Driver Module


The IM481H Plus is a high performance, low-cost microstepping driver utilizing advanced technology to greatly reduce size without sacrificing features. The IM481H is exceptionally small, easy to interface and use, and yet powerful enough to handle the most demanding applications.



Control TypeStep/Direction
Control InterfaceStep, direction and enable inputs
Driver TypeMicrostepping
Operating Temperature[°C] -40 … +85
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Input Voltage[+VDC]+12 to +48
Output Current[A]1.5 (2.1)
Low-Level Input VoltageAll inputs[+VDC]1.2
High-Level Input VoltageAll inputs except Reset[+VDC]2.0
High-Level Input VoltageReset Input, IOL = 2 mA[+VDC]2.3
Input Pull-up Resistance MSEL 0-3, Enable20
Step Clock, Direction2.0
Fault Input4.7
Low-Level Output Current Fault, Full stepmA (min)2
High-Level Output Current Fault, Full stepmA (min)-2
Low-Level Output Voltage IOL = 2 mA[+VDC]0.5
High-Level Output Voltage IOH = 1.7 mA[+VDC]2.3
Step Frequency[MHz] max2.5
Step Resolutions[steps/full step] 1 … 256

Mechanical dimensions

Part Builder

Part Number/Accessories

DescriptionPart number
1.5 A Driver ModuleXIM481H
Isolating Thermal Pad (Included with Driver)TI-481
Heat Sink (Includes Mount ing Hardware)H–481
Driver Interface BoardINT-481
21 Pin Right Angle ConnectorHY481-CN021

Recommended motors

NEMA 17Stepper Motor
32 to 75 oz-in (23 to 53 N-cm) holding torque
NEMA 14 Stepper Motor
12.5 oz-in (8.8 N-cm) holding torque
NEMA 11 Stepper Motor
12.9 to 24.1 oz-in (9.1 to 17 N-cm) holding torque

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