Specification

• Stepper motor controller, 20 Dip
  
•  Motor Type: Stepper
  
•  No. of Outputs: 2
  
•  Output Current: 10mA
  
•  Output Voltage: 3.9V
  
•  Supply Voltage Range: 4.75V to 7V
  
•  Driver Case Style: DIP
  
•  No. of Pins: 20
  
•  Operating Temperature Range: -40°C to +150°C
  
•  SVHC: No SVHC (19-Dec-2011)
  
•  Base Number: 297
  
•  Controller Type: Motor
  
•  Device Marking: L297/1
  
•  Drive Configuration: 4 Phase
  
•  IC Generic Number: 297
  
•  Logic Function Number: 297
  
•  Operating Temperature Max: 150°C
  
•  Operating Temperature Min: -40°C
  
•  Package / Case: DIP
  
•  Supply Voltage Max: 7V
  
•  Supply Voltage Min: 4.75V
  
•  Termination Type: Through Hole
  

Datasheet:

        http://www.st.com/web/en/resource/technical/document/datasheet/CD00000063.pdf