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MANUFACTURER
Exar
 
PRODUCT CATEGORY
Bus Line Transceiver
 
DESCRIPTION
Triple Transmitter Quint Receiver RS-232 28-Pin SSOP
 
Specifications
EU RoHS Compliant
Number of Transmitters 3
Number of Transceivers 1
Data Rate 120Kbps(Min)
Number of Receivers 5
Data Transmission Topology Point-to-Point
Transmitter Signal Type Single-Ended
Receiver Signal Type Single-Ended
Function Line Transceiver
Minimum Operating Temperature (°C) -40
Maximum Operating Temperature (°C) 85
Interface Standards EIA/TIA-232|EIA/TIA-232-F|EIA/TIA-562|RS-232
Power Supply Type Single
Typical Single Supply Voltage (V) 3.3|5
Minimum Single Supply Voltage (V) 3
Maximum Single Supply Voltage (V) 5.5
Temperature Grade Industrial
Mounting Surface Mount
Package Height (mm) 1.75
Package Length (mm) 10.2
Package Width (mm) 5.3
PCB changed 28
Standard Package Name SOP
Supplier Package SSOP
Pin Count 28
Lead Shape Gull-wing
 
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 ON-LINE® 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 IEC1000-4-2 Air Discharge
+8kV IEC1000-4-2 Contact Discharge
250 Kbps min. transmission rate (EB)
1000 Kbps min. transmission rate (EU)
Ideal for High Speed RS-232 Applications
 
Description
The SP3243E products 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 "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 device automatically shuts itself down drawing less than 1μA.·