DIGITAL LOCK FOR AUTOMOTIVE IGNITIONS

The LS7220 is a MOS digital lock circuit. When wired to a ten-digit keypad, the circuit will recognize one four-digit combination out of a possible 5040 combinations. The LS7220 is configured with the features required for an Auto- motive Ignition Anti-Theft Digital Lock (See Figure 5). These features include Sense input which enables the IC, Save Memory for Valet Parking, Convenience Delay to maintain Unlock condition for short term interruptions of the Sense input and Save Status and Lock Status outputs which CAN be used for direct drive of LED indicators. By LSI Computer Systems, Inc.
LS7220 's PackagesLS7220 's pdf datasheet



LS7220 Pinout, Pinouts
LS7220 pinout,Pin out
This is one package pinout of LS7220,If you need more pinouts please download LS7220's pdf datasheet.

LS7220 Application circuits
LS7220 circuits
This is one application circuit of LS7220,If you need more circuits,please download LS7220's pdf datasheet.


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