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Rev. 11/14/02

SP3223E +3.0V to +5.5V RS-232 Transceivers

© Copyright 2002 Sipex Corporation

SP3223E/3243E

Intelligent +3.0V to +5.5V RS-232 Transceivers

The SP3223E and 3243E products are RS-232 transceiver solutions intended for portable or

hand-held applications such as notebook and palmtop computers. The SP3223E and 3243E

use an internal high-efficiency, charge-pump power supply that requires only 0.1µF capacitors

in 3.3V operation. This charge pump and Sipex's driver architecture allow the SP3223E/

3243E series to deliver compliant RS-232 performance from a single power supply ranging

from +3.3V to +5.0V. The SP3223E is a 2-driver/2-receiver device, and the SP3243E is a

3-driver/5-receiver device ideal for laptop/notebook computer and PDA applications.

The SP3243E includes one complementary receiver that remains alert to monitor an external

device's Ring Indicate signal while the device is shutdown.

state when an RS-232 cable is connected and a connected peripheral is turned on. Otherwise,

the device automatically shuts itself down drawing less than 1µA.

■ Meets true EIA/TIA-232-F Standards

from a +3.0V to +5.5V power supply

■ Interoperable with EIA/TIA-232 and

adheres to EIA/TIA-562 down to a +2.7V

power source

wakes up from a 1µA shutdown

■ Minimum 120Kbps data rate under load

■ Regulated Charge Pump Yields Stable

RS-232 Outputs Regardless of V

CC

Variations

■ Enhanced ESD Specifications:

+15KV Human Body Model

+15KV IEC1000-4-2 Air Discharge

+8KV IEC1000-4-2 Contact Discharge

DESCRIPTION

SELECTION TABLE

Applicable U.S. Patents - 5,306,954; and other patents pending.

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