Overview
| Information | Programmable RS-232/RS-485/RS-422 Serial Transceiver |
|---|---|
| Supported Protocols | RS232, V.28, RS485, RS422, V.24 |
| Supply Voltage (Nom) (V) | 3.3, 5 |
| 232 Tx / Rx | 4 / 4 |
| 485 Tx / Rx | 2 / 2 |
| RS-232 Max Data Rate (Mbps) | 1 |
| RS-485/RS-422 Max Data Rate (Mbps) | 10 |
| HBM ESD (kV) | 15 |
| IEC 61000-4-2 Contact (±kV) | 8 |
| 120Ω Termination | |
| VL Pin | |
| 232 Full Handshake | |
| Slew Limit Pin | ✔ |
| Fault Tolerance (V) | -15 to 15 |
| RS-485 Duplex | Half/Full |
| Max ICC (mA) | 30 |
| Temperature Range (°C) | 0 to 70, -40 to 85 |
| Package | TSSOP-28 |
The SP336 is a programmable RS-232 and/or RS-485/RS-422 transceivers. The SP336 contains four drivers and four receivers when selected in RS-232 mode; and two drivers and two receivers when selected in RS-485 mode. In addition, it may be configured for RS-232 and RS-485/RS-422 mix mode configuration.
The RS-232 transceivers can typically operate at 250kbps or 1Mbps while adhering to the RS-232 specifications. The RS-485/RS-422 transceivers can operate at 250kbps and 10Mbps while adhering to the RS-485/RS-422 specifications. The slew rate control pin minimizes problems with reflections on long and un-terminated cables. The RS-485/422 and RS-232 drivers and receivers can be disabled (High-Z output) by the three mode select pins.
- +3.3V or +5V Supply Voltage Operation
- Software Programmable RS-232 or RS-485/RS-422 Selection
- Four RS-232 Drivers and Four Receivers in RS-232 Mode
- Two RS-485/RS-422 Full-Duplex Transceivers in RS-485/RS-422 Mode
- Mixed RS-232 and RS-485/422 Mode
- Robust ESD Specifications:
- ±15KV Human Body Model
- ±15KV IEC1000-4-2 Air Discharge
- ±8KV IEC1000-4-2 Contact Discharge
- Slew Rate Control Feature, Low EMI
- Advanced Failsafe - Receiver failsafe on open, short or terminated lines
- 1/8th Unit Load, 256 transceivers on bus
- Full Differential Driver Tri-State (Hi-Z) Control
- Receiver Output Tri-State Control
Documentation & Design Tools
All Types
Data Sheets
Application Notes
Schematics & Design Files
Product Briefs & Brochures
Design Tools & Simulation
User Guides & Manuals
| Type | Title | Version | Date | File Size |
|---|---|---|---|---|
| Data Sheets | SP336E 3.3V / 5V Programmable RS-232/RS-485/RS-422 Serial Transceiver | 1.1.1 | May 2022 | 1.5 MB |
| Application Notes | Advantages of Designing with Multi-Protocol Transceivers Application Note | R00 | September 2023 | 2.5 MB |
| Application Notes | DAN-190, MaxLinear UARTs in RS-485 Applications | R01 | July 2023 | 2.4 MB |
| Application Notes | RS-232 and RS-485 PCB Layout Application Note | R00 | December 2022 | 2.8 MB |
| Application Notes | AN212, RS485 Termination Resistor Switch Solution | 1.0.0 | August 2011 | 266.1 KB |
| Application Notes | AN210, SP336 Pinout Recommendation for Single DB-9 Connector | January 2011 | 174.2 KB | |
| User Guides & Manuals | XR21B1420 Evaluation Board User’s Manual | 1B | January 2020 | 1.2 MB |
| Product Flyers | G.hn Industrial IoT Networking Products Flyer | September 2021 | 1.1 MB | |
| Product Brochures | Interface Brochure | R02 | November 2024 | 3.6 MB |
| Schematics & Design Files | XR21B1420/1421 Evaluation Board Design Files | REV 10 | June 2016 | 386.5 KB |
Simulation Models
| Package Type | Vcc | Temp | Mode | Version | File |
|---|---|---|---|---|---|
| SOIC-W | 3.3V | Commercial | 000 | 1 | |
| SOIC-W | 3.3V | Commercial | 001 | 1 | |
| SOIC-W | 3.3V | Commercial | 010 | 1 | |
| SOIC-W | 3.3V | Commercial | 011 | 1 | |
| SOIC-W | 3.3V | Commercial | 100 | 1 | |
| SOIC-W | 3.3V | Commercial | 101 | 1 | |
| SOIC-W | 3.3V | Commercial | 110 | 1 | |
| SOIC-W | 5.0V | Commercial | 000 | 1 | |
| SOIC-W | 5.0V | Commercial | 001 | 1 | |
| SOIC-W | 5.0V | Commercial | 010 | 1 | |
| SOIC-W | 5.0V | Commercial | 011 | 1 | |
| SOIC-W | 5.0V | Commercial | 100 | 1 | |
| SOIC-W | 5.0V | Commercial | 101 | 1 | |
| SOIC-W | 5.0V | Commercial | 110 | 1 | |
| TSSOP | 3.3V | Commercial | 001 | 1 | |
| TSSOP | 3.3V | Commercial | 010 | 1 | |
| TSSOP | 3.3V | Commercial | 011 | 1 | |
| TSSOP | 3.3V | Commercial | 100 | 1 | |
| TSSOP | 3.3V | Commercial | 101 | 1 | |
| TSSOP | 3.3V | Commercial | 110 | 2 | |
| TSSOP | 5.0V | Commercial | 000 | 1 | |
| TSSOP | 5.0V | Commercial | 001 | 1 | |
| TSSOP | 5.0V | Commercial | 010 | 1 | |
| TSSOP | 5.0V | Commercial | 011 | 1 | |
| TSSOP | 5.0V | Commercial | 100 | 1 | |
| TSSOP | 5.0V | Commercial | 101 | 1 | |
| TSSOP | 5.0V | Commercial | 110 | 1 | |
| SOIC-W | 3.3V | Commercial | 1 | ||
| SOIC-W | 3.3V | Industrial | 001 | 1 | |
| SOIC-W | 3.3V | Industrial | 010 | 1 | |
| SOIC-W | 3.3V | Industrial | 011 | 1 | |
| SOIC-W | 3.3V | Industrial | 100 | 1 | |
| SOIC-W | 3.3V | Industrial | 101 | 1 | |
| SOIC-W | 3.3V | Industrial | 110 | 1 | |
| SOIC-W | 5.0V | Industrial | 000 | 1 | |
| SOIC-W | 5.0V | Industrial | 001 | 1 | |
| SOIC-W | 5.0V | Industrial | 010 | 1 | |
| SOIC-W | 5.0V | Industrial | 011 | 1 | |
| SOIC-W | 5.0V | Industrial | 100 | 1 | |
| SOIC-W | 5.0V | Industrial | 101 | 1 | |
| SOIC-W | 5.0V | Industrial | 110 | 1 | |
| TSSOP | 3.3V | Industrial | 000 | 1 | |
| TSSOP | 3.3V | Industrial | 001 | 1 | |
| TSSOP | 3.3V | Industrial | 001 | 1 | |
| TSSOP | 3.3V | Industrial | 010 | 1 | |
| TSSOP | 3.3V | Industrial | 100 | 1 | |
| TSSOP | 3.3V | Industrial | 101 | 1 | |
| TSSOP | 3.3V | Industrial | 110 | 1 | |
| TSSOP | 5.0V | Industrial | 000 | 1 | |
| TSSOP | 5.0V | Industrial | 001 | 1 | |
| TSSOP | 5.0V | Industrial | 010 | 1 | |
| TSSOP | 5.0V | Industrial | 011 | 1 | |
| TSSOP | 5.0V | Industrial | 100 | 1 | |
| TSSOP | 5.0V | Industrial | 101 | 1 | |
| TSSOP | 5.0V | Industrial | 110 | 1 |
Quality & RoHS
| Part Number | RoHS | Exempt | RoHS | Halogen Free | REACH | TSCA | MSL Rating / Peak Reflow | Package |
|---|---|---|---|---|---|---|---|
| SP336ECY-L | N | Y | Y | Y | Y | L1 / 260ᵒC | TSSOP28 |
| SP336EEY-L/TR | N | Y | Y | Y | Y | L1 / 260ᵒC | TSSOP28 |
| SP336EEY-L | N | Y | Y | Y | Y | L1 / 260ᵒC | TSSOP28 |
Click on the links above to download the Certificate of Non-Use of Hazardous Substances.
Additional Quality Documentation may be available, please Contact Support.
Parts & Purchasing
| Part Number | Pkg Code | Min Temp | Max Temp | Status | Suggested Replacement | Buy Now | Order Samples | PDN |
|---|---|---|---|---|---|---|---|---|
| SP336ECT-L | WSOIC28 | 0 | 70 | OBS | SP336ECY-L | |||
| SP336ECT-L/TR | WSOIC28 | 0 | 70 | OBS | SP336ECY-L/TR | |||
| SP336ECY-L | TSSOP28 | 0 | 70 | Active | Order | |||
| SP336ECY-L/TR | TSSOP28 | 0 | 70 | OBS | SP336EEY-L/TR | |||
| SP336EET-L | WSOIC28 | -40 | 85 | OBS | SP336EEY-L | |||
| SP336EET-L/TR | WSOIC28 | -40 | 85 | OBS | SP336EEY-L/TR | |||
| SP336EEY-L | TSSOP28 | -40 | 85 | Active | Order | |||
| SP336EEY-L/TR | TSSOP28 | -40 | 85 | Active | Order | |||
| XR21B1420IL28-0A-EVB | Board | Active |
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.
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.
Packaging
| Pkg Code | Details | Quantities | Dimensions |
|---|---|---|---|
| TSSOP28 |
|
|
|
| WSOIC28 |
|
|
|
Notifications
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) |
| 19200 | 50 |
| 9600 | 500 |
| 4800 | 1000 |
| 2400 | 3000 |
For RS-485 / RS-422 the data rate can exceed 10Mbps depending on the cable length. A cable length of 15 meters (50 feet) will do a maximum of 10Mbps. A cable length of 1200 meters (4000 feet) will do a maximum of 90kbps over 24 AWG gauge twisted pair cable (with 10 pF/ft). Refer to Annex A TIA/EIA-422-B. Also refer the RS-485 Cable Lengths vs. Data Signaling Rate Application Note (AN-292).
ESD tests are “destructive tests.” The part is tested until it suffers damage. Therefore parts cannot be 100% tested in production, instead a sample of parts are characterized during the product qualification. The test procedure consists of “zapping” pins with a given voltage using the appropriate model and then running the part through electrical tests to check for functionality or performance degradation.
ESD is caused by static electricity. In order for an ESD event to occur there must be a buildup of static charge. Very high charge levels are actually quite rare. In a normal factory environment, taking basic ESD precautions (grounding-straps, anti-static smocks, ionizers, humidity control, etc.) static levels can be kept below a few tens of volts. In an uncontrolled environment, like an office, static levels rarely get above 2000 volts. Under some worstcase conditions (wearing synthetic fabrics, rubbing against synthetic upholstered furniture, extremely low humidity)
levels can go as high as 12 to 15 thousand volts. Actually to get to 15000 volts or higher you would need to be in an uncomfortably dry environment (humidity below 10%) otherwise static charge will naturally dissipate through corona discharge. It would definitely be considered a “bad hair day.” Humans can generally feel a static shock only above 3000 volts. A discharge greater than 4000 volts can cause an audible “pop.” But repeated lower level discharges can be imperceptible and still may have a cumulative damaging effect on sensitive ICs. All ICs, even those with robust protection, can be damaged if they are hit hard enough or often enough.
Most ICs in a typical system are at greatest risk of ESD damage in the factory when the PCB is assembled and the system is being built. After the system is put together they are soldered onto the PCB and shielded within a metal or plastic system enclosure. Interface ICs are designed to attach to an external connector that could be exposed to ESD when a cable is plugged in or when a person or object touches the connector. These interface pins are most likely to see ESD exposure and therefore benefit from additional protection.
Actually the letter “E” could have two different meanings, depending on where it is in the part number. Most of our interface devices are available in different temperature grades. Commercial temperature (0 to 70C) has a “C” after the numeric part number. Industrial-extended temperature (-40 to +85C) use the letter E. So for example SP485CN is commercial and SP485EN is industrial. The second letter indicates the package type, in this case N for narrow-SOIC. Another E in the suffix indicates that this device has enhanced ESD protection, typically of ±15000Volts on the interface pins. Devices that do not have the enhanced ESD still contain built-in ESD protection of at least ±2000Volts. For example the SP485ECN is ESD rated up to ±15kV, and the SP485CN is rated for ±2kV HBM.
Visit the product page for the part you are interested in. The part's status is listed in the Parts & Purchasing section. You can also view Product Lifecycle and Obsolescence Information including PDNs (Product Discontinuation Notifications).
To visit a product page, type the part into the search window on the top of the MaxLinear website.
In this example, we searched for XRA1201. Visit the product page by clicking the part number or visit the orderable parts list by clicking "Orderable Parts".
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.
Videos
How to Design a Multiprotocol System using Only 1 Connector
Industrial networks support multiple serial interfaces such as RS-485 and RS-232. Using a multiprotocol transceiver enables industrial equipment to support both protocols using only one connector. Enabling both smaller and lower cost equipment designs. This video describes how to design multiprotocol systems using only one connector.
