This part is a kind of semiconductor called KIA7442P.

Function of this product has Bipolar Linear IC.

Manufacturers : KEC

Image and pinout :

Some of the text within the PDF file :

SEMICONDUCTOR TECHNICAL DATA VOLTAGE DETECTOR This IC series is usable for the CPU system of all types and wired logic system as it has the function of detecting the power supply voltage at the time of initial resetting after switching the power supply on and after instantaneous break in power supply voltage there-by accurately resetting the system this particular series has especially been designed as the high resetting output type. KIA7419P/F~KIA7445P/F BIPOLAR LINEAR INTEGRATED CIRCUIT B C A N K D E G FEATURES Current Consumption is Low. ICCL=30 A Typ. ICCH=300 A Typ. Hysteresis Voltage is Provided 50mV Typ. Reset Signal Generation Starting Voltages: KIA7419P/F 1.9V Typ. KIA7421P/F 2.1V Typ. KIA7423P/F 2.3V Typ. KIA7425P/F 2.5V Typ. KIA7427P/F 2.7V Typ. KIA7429P/F 2.9V Typ. KIA743 [ ... ]

KIA7442P PDF Datasheet Download