|Information||RS232 Transceiver with 1.8V Logic Interface, 3-Driver/2-Receiver|
|Supply Voltage (Nom) (V)||3.3, 5|
|No. of Tx||3|
|No. of Rx||2|
|HBM ESD (kV)||15|
|IEC 61000-4-2 Contact (±kV)||8|
|Data Rate (kbps)||250|
|Temperature Range (°C)||0 to 70, -40 to 85|
|Int. Charge Pump||✔|
|No. of Ext Caps||4|
|Nom Cap Value (µF)||0.1|
The SP3203E provides a RS-232 transceiver solution for portable and hand-held applications such as palmtops, PDA's and cell phones. The SP3203E uses an internal high- efficiency, charge-pump that requires only 0.1μF capacitors during 3.3V operation. This charge pump and MaxLinear's driver architecture allow the SP3203E to deliver compliant RS-232 performance from a single power supply ranging from +3.0V to +5.5V.
The SP3203E is a 3-driver/2-receiver device, with a unique VL pin to program the TTL input and output logic levels to allow interoperation in mixed-logic voltage systems such as PDA's and cell phones. Receiver outputs will not exceed VL for VOH and transmitter input logic levels are scaled by the magnitude of the VL input.
- 3 Driver/ 2 Receiver Architecture
- Logic selector function (VL) sets TTL input/output levels for mixed logic systems
- 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
- Minimum 250Kbps data rate under load
- 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
- Cell phone Data Cables
Documentation & Design Tools
|Data Sheets||SP3203E 3V RS-232 Serial Transceiver with Logic Selector and 15kV ESD Protection||1.0.1||May 2020||519.3 KB|
|Application Notes||RS-232 and RS-485 PCB Layout Application Note||R00||December 2022||2.8 MB|
|Application Notes||ANI-10, Charge Pump Capacitor Selection Guide for 3V RS-232 Products||B||December 2006||71.8 KB|
|Application Notes||ANI-01, 1.8V RS232 Interface Using SP3203E & SP6661||B||November 2006||31.4 KB|
|Product FAQs||SP3203e FAQ||1.0.0||March 2007||156.3 KB|
|Product Brochures||Interface Brochure||October 2022||3.8 MB|
Quality & RoHS
|Part Number||RoHS | Exempt||RoHS||Halogen Free||REACH||TSCA||MSL Rating / Peak Reflow||Package|
Click on the links above to download the Certificate of Non-Use of Hazardous Substances.
Parts & Purchasing
|Part Number||Pkg Code||Min Temp||Max Temp||Status||Suggested Replacement||Buy Now||Order Samples||PDN|
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.
FAQs & Support
Search our list of FAQs for answers to common technical questions.
For material content, environmental, quality and reliability questions review the Quality tab or visit our Quality page.
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Submit a Technical Support Question As a New Question
For RS-232 it is 50 feet (15 meters), or the cable length equal to a capacitance of 2500 pF, at a maximum transmission rate of 19.2kbps. When we reduce the baud rate, it allows for longer cable length. For Example:
Baud Rate (bps)
Maximum RS-232 Cable Length (ft)
The Parts & Purchasing section of the product page shows the Status of all orderable part numbers for that product. Click Show obsolete parts, to see all EOL or OBS products.