Datasheet Details
| Part number | LS7220 |
|---|---|
| Manufacturer | LSI Computer Systems |
| File Size | 56.94 KB |
| Description | DIGITAL LOCK FOR AUTOMOTIVE IGNITIONS |
| Datasheet |
 LS7220 Datasheet
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General Description
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.
Key Features
- 5040 Four-Digit Combinations (for a 10 digit Keypad).
- Combinations are Hard-Wire Programmed.
- Sense Input Enables Operation.
- Save Memory Feature for Valet Parking.
- Convenience Delay Controlled by External Capacitor.
- Static or Momentary Lock Control Output.
- Save Memory and Lock Status Outputs.
- +5V to +18V Operation (Vss - VDD).
- LS7220 (DIP), LS7220-S (SOIC) - See Figure 1.