The SN55LBC180, SN65LBC180 and SN75LBC180 combine a differential line driver and receiver with 3-state outputs and operate from a single 5-V supply. The driver and receiver have active-high and active-low enables, respectively, which can be externally connected to function as a direction control. The driver differential outputs and the receiver differential inputs are connected to separate terminals for full-duplex operation and are designed to present minimum loading to the bus whether disabled or powered off (VCC = 0). These parts feature a wide common-mode voltage range making them suitable for point-to-point or multipoint data-bus applications.
The devices also provide positive and negative output-current limiting and thermal shutdown for protection from line fault conditions. The line driver shuts down at a junction temperature of approximately 172°C.
The SN75LBC180 is characterized for operation over the commercial temperature range of 0°C to 70°C. The SN65LBC180 is characterized over the industrial temperature range of –40°C to 85°C.
The SN55LBC180 is characterized for operation over the military temperature range of –55°C to 125°C.
| Top documentation | Type | Title | Format options | Date |
|---|---|---|---|---|
| * | Data sheet | Low-Power RS-485 Line Driver and Receiver Pairs datasheet (Rev. I) | PDF | HTML | Oct 27, 2022 |
| Technical article | Get Connected: Failsafe bias those contentious buses! | PDF | HTML | Aug 14, 2015 |
For additional terms or required resources, click any title below to view the detail page where available.
This design (TIDA-00540) allows for communication over RS-485 or RS-232 data buses without requiring separate wiring for each. Data lines are shared between two different transceiver types, and a single control signal is used to determine which protocol is to be used.
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| SOIC (D) | 14 | Ultra Librarian |
| VQFN (RSA) | 16 | Ultra Librarian |
| PDIP (N) | 14 | Ultra Librarian |
Recommended products may have parameters, evaluation modules or reference designs related to this TI product.
Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.
If you have questions about quality, packaging or ordering TI products, see TI support.