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LS7223 Fiches technique(PDF) 4 Page - LSI Computer Systems |
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LS7223 Fiches technique(HTML) 4 Page - LSI Computer Systems |
4 / 4 page R R R R LOCK INDICATOR TO MASTER ALARM SYSTEM CONTROLLER PROGRAM MODE INDICATOR LS7223 X4 X3 X2 X1 Y4 Y3 Y2 Y1 7 8 9 4 5 6 1 2 3 * Ø # +V +V LOCK #1 LOCK #2 SEE NOTE 3 FIGURE 2. Typical Application 1. Keypad is typical 4 x 3 matrix type. Switch resistance should be ≤ 1kΩ. 2. Configuration shown is typical. The outputs of the LS7223 are functionally designed to provide either status or display information. 3. Resistors may be added in series with X inputs to provide protection against ESD from the keypad. R = 10k Ω, 1/4 W NOTES: 7223-012703-4 |
Numéro de pièce similaire - LS7223_03 |
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Description similaire - LS7223_03 |
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