SP3244E -Intelligent +3.0V To +5.5V RS-232 Transceiver With Auto On-Line® Plus

The SP3244E SP3245E is a 3-driver/5-receiver device ideal for mobile phone, consumer and PDA applications. These devices use an internal high-ef,ciency, charge-pump power supply that requires only 0.1F capacitors for 3.3V single-supply operation. This Charge Pump and Sipexs driver archi- tecture allow the SP3244E 3245E to deliver compliant RS-232 performance from a power supply ranging from +3.0V to +5.5V. At voltages between +2.7V and +3.0V the driver outputs are compliant with RS-562 and CAN Interface to RS-232 in portable applications. , The Auto On-line Plus feature allows the device to automatically enter a low power shutdown mode if all receiver and driver inputs have been idle for 30 seconds. The device will wake-up from this Automatic shutdown state upon detecting activity. This power saving feature functions without system intervention or modi,cations to software or drivers. By Exar Corporation