SP3243EHEA

Product Summary

The SP3243EHEA is a 3 driver/5 receiver RS-232 transceiver. It is intended for portable or hand-held applications such as notebook and palmtop computers. The SP3243EHEA includes one complementary receiver that remains alert to monitor an external device’s Ring Indicate signal while the device is shutdown. The SP3243E and EB devices feature slew-rate limited outputs for reduced crosstalk and EMI. The "U" and "H" series are optimized for high speed with data rates up to 1Mbps, easily meeting the demands of high speed RS-232 applications. The SP3243E series uses an internal high-efficiency, charge-pump power supply that requires only 0.1μF capacitors in 3.3V operation. This charge pump and Exar’s driver architecture allow the SP3243E series to deliver compliant RS-232 performance from a single power supply ranging from +3.0V to +5.5V. The AUTO ON-LINE feature allows the device to automatically "wake-up" during a shutdown state when an RS-232 cable is connected and a connected peripheral is turned on. Otherwise, The SP3243EHEA automatically shuts itself down drawing less than 1μA.

Parametrics

SP3243EHEA absolute maximum ratings: (1)VCC: -0.3V to +6.0V; (2)V+ : -0.3V to +7.0V; (3)V- : +0.3V to -7.0V; (4)V+ + |V-| : +13V; (5)ICC (DC VCC or GND current): +100mA; (6)TxIN, ONLINE,SHUTDOWN: -0.3V to Vcc +6.0V; (7)RxIN: +15V; (8)TxOUT: +13.2V; (9)RxOUT, STATUS: -0.3V to (VCC +0.3V); (10)Short-Circuit Duration TxOUT: Continuous; (11)Storage Temperature: -65℃ to +150℃; (10)28-pin SSOP (derate 11.2mW/℃ above +70℃): 900mW.

Features

SP3243EHEA features: (1)Meets true EIA/TIA-232-F Standards from a +3.0V to +5.5V power supply; (2)Interoperable with EIA/TIA-232 and adheres to EIA/TIA-562 down to a +2.7V power source; (3)AUTO ON-LINER circuitry automatically wakes up from a 1μA shutdown; (4)Regulated Charge Pump Yields Stable RS-232 Outputs Regardless of VCC Variations; (5)Enhanced ESD Specifications: +15kV Human Body Model, +15kV IEC1000-4-2 Air Discharge, +8kV IEC1000-4-2 Contact Discharge; (6)250 Kbps min. transmission rate (EB); (7)1000 Kbps min. transmission rate (EU); (8)Ideal for High Speed RS-232 Applications.

Diagrams