RS-232 Transceivers - MaxLinear
Description
SP3243E
Data Sheet 3 Driver/5 Receiver Intelligent +3.
0V to +5.
5V
RS-232 Transceivers
General Description
The SP3243E products (SP3243E, SP3243EB, SP3243EH, and SP3243EU) are 3 driver/5 receiver RS-232 transceiver solutions intended for portable or hand-held applications such as notebook and palmtop computers.
The SP3243E 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 “EU” and “EH” 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 for operation.
This charge pump and MaxLinear’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-ONLINE® 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 device automatically shuts itself down, drawing less than 1µA.
Features
■ 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
■ AUTO-ONLINE® circuitry automatically wakes up from a
1µA shutdown
■ Regulated Charge Pump yields stable RS-232 outputs
regardless of VCC variations
■ Enhanced ESD specifications:
±15kV Human Body Model ±15kV IEC61000-4-2 Air Discharge ±8kV IEC61000-4-2 Contact Discharge
■ 250kbps minimum transmission rate (EB) ■ 1000kbps minimum transmission rate (EU) ■ Ideal for high speed RS-232 applications
Ordering Information - page 23
Selection Table
Table 1: SP3243E Selection Table
Device
SP3243E SP3243EB SP3243EH SP3243EU
Power Supplies
RS-232 Drivers
+3.
0V to +5.
5...
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