本文介紹了HT71D02/HT71D04主要特性,方框圖和系統方框圖以及應用電路.Holtek公司的HT71D0x是動力線數據收發器, HT71D02內置3.3V穩壓器輸出, HT71D04內置5.0V穩壓器輸出, 全系列高壓輸入電壓可達30V. 經由內置數據傳輸調制接口,可將高壓傳輸在線數據解調并轉為3.3V or 5V信號給子系統MCU,亦可將子系統MCU信號調制后轉為高壓經由傳輸線傳回主系統,適用于諸如煙感器、水表等聯網系統產品。

HT71D02/HT71D04主要特性:

_ Complete Data Transmission on Power Line functions

_ High Maximum Input Voltage: 30V

_ Integrated Low Dropout Voltage Regulator

_ Integrated Voltage Detector for Power Supply Monitoring

_ Open drain NMOS drivers for flexible interfacing

_ Power and Reset Protection Features

_ 8-pin SOP package type

_ Minimal external component requirements

圖1.HT71D02/HT71D04方框圖

圖2.HT71D02/HT71D04系統方框圖

圖3.HT71D02/HT71D04應用電路圖