|Information||±60V Fault Tolerant 3.0V to 5.5V TIA-485/TIA-422 20Mbps Full Duplex Transceiver with VL Pin|
|Supported Protocols||RS-422, RS-485|
|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)||-|
|Temperature Range (°C)||-40 to 85, -40 to 105|
|Data Rate (MAX) (Mbps)||20|
|ICC (Max) (mA)||4|
|Typ Shutdown Current (µA)||0.001|
|PROFIBUS (5V) or High Output (3V)|
The XR33156 is a high performance TIA-485/TIA-422 transceiver designed for improved performance in noisy industrial environments and increased tolerance to system faults.
The analog bus pins can withstand direct shorts up to ±60V and are protected against ESD events up to ±15kV HBM. An extended ±25V common mode operating range allows for more reliable operation in noisy environments.
The receiver includes full fail-safe circuitry, guaranteeing a logic high receiver output when the receiver inputs are open, shorted or undriven. The XR33156 receiver input impedance is at least 30kΩ (1/2.5 unit load), allowing more than 80 devices on the bus.
The driver is protected by short circuit detection as well as thermal shutdown and maintains high impedance in shutdown or when powered off.
The XR33156 includes hot swap circuitry to prevent false transitions on the bus during power up or live insertion and can enter a 1nA low current shutdown mode for extreme power savings.
- 3.0V to 5.5V operation
- ±60V fault tolerance on analog bus pins
- Extended ±25V common mode operation
- Robust ESD protection:
- ±15kV HBM (bus pins)
- ±4kV HBM (all other pins)
- 1.65V to 5.5V I/O logic interface VL pin
- Invert control to correct for reversed bus pins
- Enhanced receiver fail-safe protection for open, shorted or terminated-but-idle data lines
- Hot swap glitch protection on DE and RE pins
- 1µA (max) standby current
- Driver short circuit current limit and thermal shutdown for overload protection
- Reduced unit loads allows up to 80 devices on bus
- Industry standard 14-pin NSOIC package
- -40°C to 85°C ambient operating temperature range
- XR33052 – Half Duplex, 250kbps with hot swap protection
- XR33053 – Full Duplex, 1Mbps with hot swap protection
- XR33055 – Half Duplex, 1Mbps with hot swap protection
- XR33058 – Half Duplex, 20Mbps with hot swap protection
- XR33152 – Half Duplex, 250kbps with invert control
- XR33155 – Half Duplex, 1Mbps with invert control
- XR33158 – Half duplex, 20Mbps with invert control
- Industrial control networks
- HVAC networks
- Building and process automation
- Remote utility meter reading
- Energy monitoring and control
- Long or unterminated transmission lines
Documentation & Design Tools
|Data Sheets||XR33152/5/6/8 ±60V Fault Tolerant 3.0V to 5.5V RS-485/RS-422 Transceivers||2C||February 2018||782.2 KB|
|Application Notes||RS-232 and RS-485 PCB Layout Application Note||R00||December 2022||2.8 MB|
|Application Notes||AN-292, RS-485 Cable Lengths vs Data Signaling Rate||R01||July 2022||2.7 MB|
|Application Notes||AN-291, RS-485 Advanced Fail-Safe Feature||00||January 2022||920.5 KB|
|Application Notes||ANI-23, Fault Tolerant Testing||July 2017||574.3 KB|
|Product Flyers||±60V Fault Tolerant RS-485 Transceivers||March 2019||742.8 KB|
|Product Brochures||Interface Brochure||October 2022||3.8 MB|
|Whitepapers||How Robust Is Your Fault Tolerant Transceiver?||July 2017||129.3 KB|
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||Buy Now||Order Samples|
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)
Fail Safe is an attempt to keep the output of the RS-485 receiver to a known state. Transceivers may have standard fail safe or advanced / enhanced receiver fail safe features. Standard fail safe supports open inputs while enhanced fail safe transceivers such as the SP339 and XR34350 support open input, shorted input and undriven terminated lines without external biasing. See Application Note ANI-22 for more detail.
Find the product page of the part that you want to get an evaluation board for and click on Parts & Purchasing. Example:
Find the icons under Buy Now or Order Samples:
Click on the Buy Now icon and see who has stock and click on the Buy button:
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If the icons are missing, then contact Customer Support.
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.