SP3243E


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

Features

  • Meets true EIA/TIA-232-F Standards from a +3.0V to +5.5V power supply
  • ±15kV ESD protection
  • 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 con- nected and a connected peripheral is turned on. Otherwise, the device automatically shuts itself down drawing less than 1μA.

For technical support or help choosing a product please email Exar’s Serial Technical Support group at:  serialtechsupport@exar.com.
Part NumberPkg CodeRoHSMin
Temp.
(°C)
Max
Temp.
(°C)
StatusBuy NowOrder Samples
SP3243ECA-LSSOP28SSOP28070Active
SP3243ECA-L/TRSSOP28SSOP28070Active
SP3243ECT-LWSOIC28WSOIC28070Active
SP3243ECT-L/TRWSOIC28WSOIC28070Active
SP3243ECY-LTSSOP28TSSOP28070Active
SP3243ECY-L/TRTSSOP28TSSOP28070Active
SP3243EEA-LSSOP28SSOP28-4085Active
SP3243EEA-L/TRSSOP28SSOP28-4085Active
SP3243EET-LWSOIC28WSOIC28-4085Active
SP3243EET-L/TRWSOIC28WSOIC28-4085Active
SP3243EEY-LTSSOP28TSSOP28-4085Active
SP3243EEY-L/TRTSSOP28TSSOP28-4085Active
SP3243EBERQFN32-4085OBS
SP3243EBER/TRQFN32-4085OBS
SP3243ECASSOP28070OBS
SP3243ECRQFN32070OBS
SP3243ECR/TRQFN32070OBS
SP3243ECR-L    OBS
SP3243ECTWSOIC28070OBS
SP3243EEASSOP28-4085OBS
SP3243EERQFN32-4085OBS
SP3243EER/TRQFN32-4085OBS
SP3243EER-L    OBS
SP3243EHCRQFN32070OBS
SP3243EHCR/TRQFN32070OBS
SP3243EHCY-LTSSOP28TSSOP28070OBS
SP3243EHCY-L/TRTSSOP28TSSOP28070OBS
SP3243EHERQFN32-4085OBS
SP3243EHER/TRQFN32-4085OBS
SP3243EHEY-LTSSOP28TSSOP28-4085OBS
SP3243EHEY-L/TRTSSOP28TSSOP28-4085OBS
SP3243ERQFN32-4085OBS
SP3243ER/TRQFN32-4085OBS
SP3243ER-L    OBS

Part Status Legend
Active - the part is released for sale, standard product.
EOL (End of Life) - the part is no longer being manufactured, there may or may not be inventory still in stock.
CF (Contact Factory) - the part is still active but customers should check with the factory for availability. Longer lead-times may apply.
PRE (Pre-introduction) - the part has not been introduced or the part number is an early version available for sample only.
OBS (Obsolete) - the part is no longer being manufactured and may not be ordered.
NRND (Not Recommended for New Designs) - the part is not recommended for new designs. 
Specifications
No. of Tx3
No. ofRx5
Data Rate (kbps)120
ESD (KV)15
VccMIN.(V)3
VccMAX.(V)5.5
Vcc (V)3.3
Int.Chrg. PumpYes
No. ofExtCaps4
NomCap.Value(µF)0.1
ShutdownYes
TTLTri-stateYes