This part is a kind of semiconductor called AA16.

Function of this product has Voltage detector.

Manufacturers : Agamem Microelectronic

Image and pinout :

Some of the text within the PDF file :

Agamem Mircoelectronics Inc. Series ___________________________________________________________ PRELIMINARY Voltage detector with delay „ FEATURES z High accuracy in 5% voltage detection. z Typical 150mv/200mv hysteresis width between power reset and reset disable detection point for 3.3v and 5v, respectively. z Low power consumption typical at 1.3uA at Vcc=5v. z With about 3.5us and 40us delay time at power reset disable and reset procedure. z Open-Drain output type. (AA16N series) z Inverter output type. (AA16C series) z Low temperature coefficient. ( SOT-23 ) AA16N3S AA16C3S AA16N3S1 AA16C3S1 AA16 AA16N3T AA16C3T ` „ APPLICATIONS z z Reset for microprocessor or DSP Power failure detector ( SOT-89) ( SOT-25 ) AA16N3G AA16C3G „ DESCRIPTION AA16 Series is a t [ ... ]

AA16 PDF Datasheet Download