General Description
IT8687R integrates six (6) line drivers, ten (10) line receivers, one ISA signal encoder,  one (1) UART
signal-mixing control logic, and one 24/48 MHz clock generator.

FEATUREs
Contains six (6) line drivers (1488)and ten (10) line receivers(1489)
Supports two (2) RS-232 serial ports
Very low power consumption (150mW)
Supports one (1) crystal oscillator clock generator
Four power supply inputs:0V,5V,-12V,+12V
High voltage CMOS process
48-pin SSOP package