SP3243E
Data Sheet
3 Driver / 5 Receiver Intelligent +3.0V to +5.5V
RS-232 Transceivers
General Description Features
The SP3243E products (SP3243E, SP3243EB, SP3243EH,
Meets true EIA / TIA-232-F standards from a +3.0V to
and SP3243EU) are 3 driver / 5 receiver RS-232 transceiver
+5.5V power supply
solutions intended for portable or hand-held applications
such as notebook and palmtop computers. The SP3243E Interoperable with EIA / TIA-232 and adheres to EIA /
includes one complementary receiver that remains alert to
TIA-562 down to a +2.7V power source
monitor an external devices Ring Indicate signal while the
AUTO ON-LINE circuitry automatically wakes up from a
device is shutdown. The SP3243E and EB devices feature
1A shutdown
slew-rate limited outputs for reduced crosstalk and EMI. The
EU and EH series are optimized for high speed with data
Regulated Charge Pump yields stable RS-232 outputs
rates up to 1Mbps, easily meeting the demands of high speed
regardless of V variations
CC
RS-232 applications. The SP3243E series uses an internal
Enhanced ESD specifications:
high-efficiency charge-pump power supply that requires only
0.1F capacitors in 3.3V operation. This charge pump and
15kV Human Body Model
MaxLinears driver architecture allow the SP3243E series to
15kV IEC61000-4-2 Air Discharge
deliver compliant RS-232 performance from a single power
8kV IEC61000-4-2 Contact Discharge
supply ranging from +3.0V to +5.5V. The AUTO ON-LINE
250kbps minimum transmission rate (EB)
feature allows the device to automatically wake-up during a
shutdown state when an RS-232 cable is connected and a
1000kbps minimum transmission rate (EU)
connected peripheral is turned on. Otherwise, the device
automatically shuts itself down, drawing less than 1A.
Ideal for high speed RS-232 applications
Ordering Information - page 23
Selection Table
Table 1: SP3243E Selection Table
Power RS-232 RS-232 External Auto On-Line TTL # of Data Rate ESD
Device
Supplies Drivers Receivers Components Circuitry 3-State Pins (kbps) Rating
SP3243E +3.0V to +5.5V 3 5 4 capacitors Yes Yes 28 120 15kV
SP3243EB +3.0V to +5.5V 3 5 4 capacitors Yes Yes 28 250 15kV
SP3243EH +3.0V to +5.5V 3 5 4 capacitors Yes Yes 28 460 15kV
SP3243EU +3.0V to +5.5V 3 5 4 capacitors Yes Yes 28 1000 15kV
www.maxlinear.com Rev 1.0.3SP3243E 3 Driver / 5 Receiver Intelligent +3.0V to +5.5V RS-232 Transceivers Data Sheet Revision History
Revision History
Revision Release Date Change Description
-- 02/05/06 Legacy Sipex Datasheet
1.0.0 7/23/09 Convert to Exar Format, Update ordering information and change revision to 1.0.0.
1.0.1 11/10/09 Add missing (EH) model identification for Driver output Skew and Transition-Region Slew Rate
specification and change revision to 1.0.1.
1.0.2 06/06/11 Remove obsolete devices per PDN 110510-01 and change ESD rating to IEC61000-4-2.
1.0.3 5/24/19 Convert to MaxLinear format. Update Ordering Information and remove obsolete devices.
Move pinouts to Pin Information section. Add ESD rating table to Absolute Maximum section.
Remove obsolete WSOIC28 package information.
5/24/19 Rev 1.0.3 ii