|Information||5V Single-Supply RS-232 Drivers/Receivers with no external capacitors|
|Supply Voltage (Nom) (V)||5|
|No. of Tx||2|
|No. of Rx||2|
|HBM ESD (kV)||2|
|IEC 61000-4-2 Contact (±kV)||-|
|Data Rate (kbps)||120|
|Temperature Range (°C)||0 to 70, -40 to 85|
|Int. Charge Pump||✔|
|No. of Ext Caps||0|
|Nom Cap Value (µF)|
The SP233A / SP310A / SP312A devices are a family of line driver and receiver pairs that meets the specifications of RS-232 and V.28 serial protocols. The devices are pin-to-pin compatible with popular industry standard pinouts. The SP233A / SP310A / SP312A offer 120kbps data rate under load, small ceramic type 0.1μF charge pump capacitors and overall ruggedness for commercial applications. Features include MaxLinear's BiCMOS design allowing for low power operation without sacrificing performance. These devices are available in plastic DIP and SOIC Wide packages operating over the commercial and industrial temperature ranges.
- Operates from Single +5V Power Supply
- Meets All RS-232D and ITU V.28 Specifications
- No external capacitors required
- High Data Rate – 120Kbps Under Load
- Low Power CMOS – 3mA Operation
- No External Capacitors Required (SP233A)
- Enhanced ESD Protection (2kV Human Body Model)
Documentation & Design Tools
|Data Sheets||SP233A Enhanced RS-232 Line Drivers/Receivers||1.0.2||May 2020||764.3 KB|
|Application Notes||ANI-19, Selecting Charge Pump Capacitors for Serial RS-232 Transceivers||D||July 2006||386.8 KB|
|Product Brochures||Interface Brochure||October 2019||1.3 MB|
Quality & RoHS
|Part Number||RoHS | Exempt||RoHS||Halogen Free||REACH||TSCA||MSL Rating / Peak Reflow||Package|
|SP233ACT-L||N||Y||Y||Y||Y||L3 / 260ᵒC||WSOIC20|
|SP233ACT-L/TR||N||Y||Y||Y||Y||L3 / 260ᵒC||WSOIC20|
|SP233AET-L||N||Y||Y||Y||Y||L3 / 260ᵒC||WSOIC20|
|SP233AET-L/TR||N||Y||Y||Y||Y||L3 / 260ᵒC||WSOIC20|
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.
For ordering information and general customer service visit our Contact Us page.
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)
In this example, we looked for XRA1201. Click on part number header or on the link at the bottom of the result. This brings you to the product page. For example:
Click on Parts & Purchasing, highlighted with the blue arrow above. The screen changes to:
Notice the status column and the “Show obsolete parts” link. A legend tells you the definition of the different statuses. Click on the “Show obsolete parts” link to see EOL or OBS part numbers along with the Active part numbers, the legend still present:
Another method to find out if a part is OBS or EOL is to click on SUPPORT at the top:
And then Product Change Notifications:
Type the part into the search, and click on one of the part numbers from the drop down menu. Then you can look for the Product Discontinuation Notice, which generally is at the top of the list, for example:
If you see this, it tells you that this particular orderable part has been discontinued and when the last order date is, or was. If you click on the file, then you can view the notice we sent about this if you purchased the part in the recent past. It may also advise of a replacement part. When an orderable part first becomes discontinued, Product Discontinuation Notices are sent are sent to those who have purchased the parts in the recent past, if purchased directly, with a dated opportunity to place a last order.