This is one of the semiconductor types. This part name is RF83C.
This product has 300 – 440MHz ASK/OOK Receiver functions.
Manufacturers of product is HOPERF.
Image and pinout :
RF83C PDF Datasheet
Some of the text files within the PDF file
RF83/RF83C ASK/OOK Receiver V1.1 RF83/RF83C 300~440MHz ASK/OOK Receiver General
The RF83/RF83C is a single chip ASK/OOK (ON-OFF Keyed) RF receiver IC. This device is a true ―antenna-in to data-out‖ monolithic device. All RF and IF tuning are accomplished automatically within the IC which eliminates manual tuning and reduces production costs. The result is a highly reliable yet low cost solution. The RF83 is a fully featured part in 16-pin packaging and the RF83C is a reduced function set part packaged in 8-pin packaging . The RF83/RF83C operating voltage range is 3.6V-5.5V, Their low voltage counterparts are RF83L/RFM83CL at 2.1V-3.6V. The RF83 provides two additional functions, (1) a Shutdown pin, which may be used to turn the device off for duty-cycled operation, and (2) a ―Wake-up‖ output, which provides an output flag indicating when an RF signal is present. These features make the RF83 ideal for low and ultra-low power applications, such as RKE and remote cont [ … ]
Please refer to the file for details.