Replacement Chip for MM74C922
· Fully encodes a key switch array. (up to 4 x 4)
· No external parts required.
· Low power consumption 1.5 mA typical.
· Supply voltage 2.4 to 5.25 volts.
· Last key pressed retained on data outputs.
· All timing internally generated.
· 2 Key rollover.
· On chip row input resistors.
· Internal key bounce elimination.
· TTL and CMOS compatible outputs.
· Part is in full production.
· SOIC 20 Pin Package.
· ROHS Compliant
· Low EMI