SCLA021A September   2019  – April 2021 SN74HC00 , SN74HCS08-Q1

 

  1.   Trademarks
  2. 1Block Diagram
  3. 2Optimizing Communication with Wireless Interfaces
    1. 2.1 SDIO Voltage Translation
    2. 2.2 SPI Voltage Translation
  4. 3Logic and Translation Use Cases
    1. 3.1 Logic Use Cases
      1. 3.1.1 Drive Indicator LEDs
      2. 3.1.2 Power Sequencing: Combine Power-Good Signals
      3. 3.1.3 Debounce Switches and Buttons
      4. 3.1.4 Latching Alarm Circuit with Reset
      5. 3.1.5 Buffer and Driver: Condition Digital Signals
    2. 3.2 Voltage Translation Use Cases
      1. 3.2.1 SPI Communication
      2. 3.2.2 GPIO Communication
      3. 3.2.3 I2C Communication
      4. 3.2.4 I2S Communication
  5. 4Recommended Logic and Translation Families for Smart Thermostats
    1. 4.1 AUP: Advanced Ultra-Low-Power CMOS Logic and Translation
    2. 4.2 AXC: Advanced eXtremely Low-Voltage CMOS Translation
    3. 4.3 LVC: Low-Voltage CMOS Logic and Translation
  6. 5Revision History

Latching Alarm Circuit with Reset

GUID-BAF1E85A-0B72-49F4-BEA5-B7676BBEC7FB-low.gifFigure 3-4 Using Logic to Monitor a Normally Closed (NC) Tamper Switch
GUID-68C4D12E-A848-4F4F-8B97-A6606615DFFE-low.gifFigure 3-5 Using Logic to Monitor a Normally Open (NO) Tamper Switch