Machine or Area Access Digital Lock
(14 Pins)

LS7225-S, LS7225, LS7226-S, LS7226

Category: Programmable Digital Locks

Status: No longer in production

Stock Availability: Not In Stock

All of our Standard Products are RoHS Compliant

For pricing and availability you may contact us, or request a quote. Most of our standard parts are available for purchase on Digi-Key, and through our Distributors.

Features:

• 5,040 four digit Combinations (for a 10 number keypad)
• Combinations are hard-wire programmed
• SEQUENCE ENABLE input enables Combination Entry
• Combination Entry time controlled by external capacitor
• Static or Momentary Lock Control output
• Tamper Detection output
• Lock Status output

Description:

The LS7225 is a monolithic, ion implanted MOS 4-Key keyless lock. The circuit includes sequential logic for interpretation of correct key closure; a momentary and static lock control output, out of sequence detection circuitry, and a tamper input. A sequence of logical “1”s at the inputs I1, I2, I3, and I4 (in correct sequence) sets the “SEQUENTIAL MEMORY”, causing the LOCK CONTROL output to go high, and the MOMENTARY LOCK CONTROL output to go high, and the lock indicator to open. An external capacitor at input I1 (Pin 11) determines the amount of time allowed to enter the SELECTED KEYS inputs in proper sequence. The delay is a function of the external capacitance and the supply voltage.

Ordering Info

Code
Package
Notes

P/N

RoHS Compliant Standard plastic DIP

1, 2, 3

P/N – S

RoHS Compliant Standard SOIC

1, 2, 3, 4

P/N – SW

RoHS Compliant Widebody SOIC option

1, 2, 3, 4

P/N – S14

RoHS Compliant 14-pin SOIC version of 8-pin part

1, 2, 3, 4

P/N – TS

RoHS Compliant TSSOP

1, 2, 3, 4

P/N – TS24

RoHS Compliant 24-pin TSSOP version of 20-pin part

1, 2, 3, 4

Example: LSxxxx-TS = the LSxxxx in the RoHS Compliant TSSOP package-type

Note 1: See Table for package body widths

Note 2: Package outline drawings conform to JEDEC standards

Note 3: Packages shipped in anti-static tubes

Note 4: Tape and Reel option available. Contact factory for details

ADDITIONAL ORDERING OPTIONS:

Probed Wafers (P/N-PW), Waffle Packed Die (P/N-WP)

Package Body Widths
# of Pins
P/N, -C, -CM
-S
-SW
-TS

8

300

150

14

300

150

173

16

300

150

300

18

300

300

20

300

300

173

24

600

300

173

28

600

300

173

38

173

40

600

44

240

LSI/CSI