Asynchronous serial output. ASCII 0-9, #, *, and A-D (on 16 key keypads)
· Fully encodes a key switch array. (up to 4 x 4)
· No external parts required.
· Low power consumption 2 mA typical.
· Supply voltage 2.4 to 5.25 volts.
· 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.
· Low EMI
· ROHS Compliant