|Information||1Mbps 3.0V to 5.5V RS-232 1-driver/1-receiver with low-power shutdown|
|Supply Voltage (Nom) (V)||3.3, 5|
|No. of Tx||1|
|No. of Rx||1|
|HBM ESD (kV)||15|
|IEC 61000-4-2 Contact (±kV)||8|
|Data Rate (kbps)||1000|
|Temperature Range (°C)||-40 to 85|
|Int. Charge Pump||✔|
|No. of Ext Caps||4|
|Nom Cap Value (µF)||0.1|
The SP3220E devices are RS-232 driver/receiver solutions intended for portable or hand-held applications such as palmtop computers, instrumentation and consumer products. These devices incorporate a high-efficiency charge-pump power supply that allows the SP3220E devices to deliver true RS-232 performance from a single power supply ranging from +3.0V to +5.0V. This charge pump requires only 0.1μF capacitors in 3.3V operation. The ESD tolerance of these devices is over ±15kV for both Human Model and IEC1000-4-2 Air discharge test methods. All devices have a low-power shutdown mode where the driver outputs and charge pumps are disabled. During shutdown, the supply current falls to less than 1μA.
- Meets All EIA-232 and ITU V.28 Specifications from a wide +3.0V to +5.5V power supply
- Interoperable with RS232 and V.28 at 2.7V
- Supports High Serial Data Rates: 1 Mbps SP3220EU
- 1μA Low Power Shutdown Mode
- Footprint Compatible with MAX3221E, ISL3221
- 4 x 0.1μF External Charge Pump Capacitors
- Tri–State/Receiver Enable
- Improved ESD Specifications:
- +15kV Human Body Model
- +15kV IEC1000-4-2 Air Discharge
- +8kV IEC1000-4-2 Contact Discharge
Documentation & Design Tools
|Data Sheets||SP3220E/EB/EU +3.0V to +5.5V RS-232 Driver/Receiver Pair||1.0.3||May 2020||606.1 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|
|Product Brochures||Interface Brochure||October 2022||3.8 MB|
Quality & RoHS
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
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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)
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