ZHCSHH3B January 2018 – July 2018 TS5MP645
PRODUCTION DATA.
- 1 特性
- 2 應(yīng)用
- 3 說(shuō)明
- 4 修訂歷史記錄
- 5 Pin Configuration and Functions
- 6 Specifications
- 7 Parameter Measurement Information
- 8 Detailed Description
- 9 Application and Implementation
- 10Power Supply Recommendations
- 11Layout
- 12器件和文檔支持
- 13機(jī)械、封裝和可訂購(gòu)信息
封裝選項(xiàng)
請(qǐng)參考 PDF 數(shù)據(jù)表獲取器件具體的封裝圖。
機(jī)械數(shù)據(jù) (封裝 | 引腳)
- YFP|36
散熱焊盤機(jī)械數(shù)據(jù) (封裝 | 引腳)
訂購(gòu)信息
8.3.1 Powered-Off Protection
When the TS5MP645 is powered off (VDD = 0 V) the I/Os and digital logic pins of the device will remain in a high impedance state. The crosstalk, off-isolation, and leakage remains within the electrical specifications. This prevents errant voltages from reaching the rest of the system and maintains isolation when the system is powering up.
Figure 20 shows an example system containing a switch without powered-off protection with the following system level scenario
- Subsystem A powers up and starts sending information to Subsystem B that remains unpowered.
- The I/O voltage back powers the supply rail in Subsystem B.
- The digital logic is back powered and turns on the switch. The signal is transmitted to Subsystem B before it is powered and damages it.
Figure 20. System Without Powered-Off Protection With powered-off protection, the switch prevents back powering the supply and the switch remains high-impedance. Subsystem B remains protected.
Figure 21. System With Powered-Off Protection This features has the following system level benefits.
- Protects the system from damage.
- Prevents data from being transmitted unintentionally
- Eliminates the need for power sequencing solutions reducing BOM count and cost, simplifying system design and improving reliability.