Bluetooth transceiver IC, High speed data, band signals, RF transmitter,

 SP4082E Series 115 kbps 5 V RS-485 / RS-422 Transceiver - NSOIC-8

https://www.futureelectronics.com/p/semiconductors--wireless-rf--transceiver-ics/sp4082een-l-tr-maxlinear-9064496