Description
The ELM310 is an interface circuit for use between high speed logic outputs and four phase stepper motor driver circuits. By suitably debouncing mechanical switches, the circuit could also be used for manually controlling stepper motors as well.
This circuit supports two popular modes of operation, and can be switched between the two ‘on the fly’.
The full-step, or single phase wave mode, as it is sometimes called, is entered into at powerup. This mode provides sequential single phase output signals for driving a variety of circuits with only one output active at any one time.

FEATUREs
• Low power CMOS design - typically 1mA at 5V
• Wide supply range - 3.0 to 5.5 volt operation
• Two inputs control both mode and motion
• No external timing components
• Completely static operation - will maintain a step position indefinitely
• High current drive outputs - up to 25 mA
• Both half and full stepping supported
• Very high speed - up to 25000 steps per second

APPLICATIONs
• Stepper motor drive logic
• Process sequencing
• Sequential left/right LED driver