The Renesas ICL32 series is a RS-232 transmitters/receivers with supply voltage Vcc Ranges from 3 to 5.5 volts. It is used in PDAs, notebook, and laptop computers where the low operational power consumption are censorious. This transceiver are Latch-up free
Automatic and manual powerdown features (except ICL3232)
Receiver hysteresis for improved noise immunity
Minimum data rate (250kbps)
Minimum slew rate (6V/μs)
Wide power supply range ( single +3V to +5.5V)
Low supply current in powerdown state (1μA)