E2A0035-16-X0 ¡ Semiconductor MSM6882-3/6882-5 .
MSM6882-5 - (MSM6882-3/-5) 2400/1200 bps Single Chip MSK Modem
MSM6882-3 - (MSM6882-3/-5) 2400/1200 bps Single Chip MSK Modem