There is a cost-effective package 40-DIP (0.600, 15.24mm) available.Transmissions are made using 2, DUART channels.As for packaging, Tube is chosen.At present, this electronic part has a status of Obsolete.You can mount it by using Through Hole.There is 5V supply voltage for it.Several characteristics of Internal Oscillator, Timer/Counter are present in it.
XR68C681P Features
XR68C681P Applications
There are a lot of MaxLinear, Inc. XR68C681P UARTs applications.