Menu
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.
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 mils
-S mils
-SW mils
-TS mils
8
300
150
–
–
14
300
150
–
173
16
300
150
300
173
18
300
300
–
–
20
300
300
–
173
24
600
300
–
173
28
600
300
–
173
38
–
–
–
173
40
600
–
–
–
48
–
–
–
240