SN65LBC170DWRG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
SN65LBC170DWRG4 is a triple differential line transceiver from Texas Instruments supporting RS-422 and RS-485 standards in a 20-pin SOIC package. It provides 3 independent differential drivers and receivers with Schmitt-trigger inputs and at least 1 V differential output swing. Designed for industrial fieldbus networks, multi-drop serial communication, and long-cable data transmission up to 250 kbps.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 20
- Lifecycle
- OBSOLETE
- Datasheet
- SN65LBC170DWRG4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of SN65LBC170DWRG4?
- Triple differential RS-422/RS-485 transceiver in one IC
- Differential Schmitt-trigger receiver inputs for noise immunity
- Minimum 1 V differential output voltage swing
- Supports EIA-422, EIA-485, ISO 8482, and TIA standards
- 20-pin SOIC wide-body package
- 8 mA maximum low-side output drive current per driver
What is SN65LBC170DWRG4 used for?
The SN65LBC170DWRG4 is used in industrial automation networks such as RS-485 multi-drop buses connecting PLCs, sensors, and actuators over cable runs up to 1200 m. Its triple transceiver architecture consolidates 3 independent full-duplex RS-422 channels in a single 20-pin IC, reducing BOM count in motor drive panels and distributed control systems. It also serves in building automation, HVAC controllers, and energy metering networks requiring robust differential signaling.
What are the specifications of SN65LBC170DWRG4?
| YTEOL | 0 |
| Differential Output | YES |
| Driver Number of Bits | 3 |
| Input Characteristics | DIFFERENTIAL SCHMITT TRIGGER |
| Interface IC Type | LINE TRANSCEIVER |
| Interface Standard | EIA-422; TIA-422; EIA-485; TIA-485; ISO 8482; X3.277 |
| JESD-30 Code | R-PDSO-G20 |
| Number of Functions | 3 |
| Out Swing-Min | 1V |
| Output Low Current-Max | 0.008A |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP20,.4 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | NOT SPECIFIED |
| Qualification Status | Not Qualified |
| Receive Delay-Max | 16ns |
| Receiver Number of Bits | 3 |
| Supply Current-Max | 20mA |
| Supply Voltage-Max | 5.25V |
| Supply Voltage-Min | 4.75V |
| Supply Voltage-Nom | 5V |
| Surface Mount | YES |
| Technology | BICMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | NOT SPECIFIED |
| Transmit Delay-Max | 12ns |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Where can I find the SN65LBC170DWRG4 datasheet?
SN65LBC170DWRG4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for SN65LBC170DWRG4?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How many differential channels does the SN65LBC170DWRG4 integrate, and in what configuration?
The device integrates 3 independent differential driver-receiver pairs, each compliant with EIA-422 and EIA-485 standards, in a 20-pin SOIC package. This allows a single IC to replace 3 discrete transceiver packages, reducing board area and interconnect complexity in multi-channel industrial fieldbus interfaces.
What is the minimum differential output swing of the drivers?
Each driver guarantees a minimum differential output voltage of 1 V under load, meeting the EIA-485 and EIA-422 signal amplitude requirements for reliable data transmission over twisted-pair cables up to 1200 m at 250 kbps or shorter cables at higher rates. The differential Schmitt-trigger receivers provide additional noise margin at the receiving end.
Which industrial bus standards does this transceiver comply with?
The SN65LBC170DWRG4 complies with EIA-422, TIA-422, EIA-485, TIA-485, ISO 8482, and X3.277 standards, making it interoperable with a broad range of industrial fieldbus systems. This multi-standard compliance means a single part number can serve RS-422 point-to-point and RS-485 multi-drop bus topologies in the same design.
When would a designer choose this triple transceiver over a single-channel alternative?
A triple transceiver is preferred when 3 independent serial communication channels are needed — for example, connecting 3 separate RS-485 sensor buses to a gateway — since consolidating them in one 20-pin SOIC reduces the IC count from 3 to 1, saving approximately 60% of PCB footprint and BOM entries compared to 3 individual 8-pin single-channel devices.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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