Operator Interface (Keypad):
PDN1144 Four Row by Four Column Keypad Interface IC pdn1144.pdf
PDN1188 Eight Row by Eight Column Keypad Interface IC pdn1188.pdf
Operator Interface (Text LCD)
PDN702 Character LCD Controller IC pdn702.pdf
Operator Interface (7-Segment LED)
Mechanical Pushbutton Interface
PDN2008 Eight Channel Contact Debouncer pdn2008.pdf
PDN2108A One-of_Eight Latching (one output active) pdn2108.pdf
PDN2108D One-of-Eight Latching (one or zero outputs active) pdn2108.pdf
Motor Control
PDN1200 UniPolar Stepper Motor Controller pdn1200.pdf
PDN609 Serial Interface Stepper Controller pdn609.pdf