Analog frequency divider by 3 chip, wifi rf antennas, Microwave transceiver - tatanh1983/conchodom GitHub Wiki 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-6164468