Texas Instruments SN75179BDR
| Parameters | |
|---|---|
| Series | - |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| RoHS Status | ROHS3 Compliant |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) |
| Mfr | Texas Instruments |
| Mounting Type | Surface Mount |
| Operating Temperature | 0°C ~ 70°C |
| Type | Transceiver |
| Data Rate | - |
| Receiver Hysteresis | 50 mV |
| Supplier Device Package | 8-SOIC |
| Voltage - Supply | 4.75V ~ 5.25V |
| Protocol | RS422, RS485 |
| Number of Drivers/Receivers | 1/1 |
| Duplex | Full |
| Package | Tape & Reel (TR) |
| Product Status | Active |
| Base Product Number | SN75179 |
| REACH Status | REACH Unaffected |
| Standard Package | 2,500 |
| ECCN | EAR99 |
| HTSUS | 8542.39.0001 |
SN75179BDR RS-485 Transceiver RS-422 IC, Differential Line Driver Chip Overview
The SN75179BDR is a high-performance RS-422/RS-485 differential line transceiver designed by Texas Instruments (TI) for robust industrial and automotive communication systems. Operating in full-duplex mode, it supports data rates up to 10 Mbps, making it ideal for long-distance, multi-node networks. The device features a single driver and receiver pair in an 8-pin SOIC package, ensuring compatibility with balanced transmission lines. It adheres to TIA/EIA-422-B, TIA/EIA-485-A, and ITU V.11 standards, offering high input impedance, ±200 mV input sensitivity, and 50 mV receiver hysteresis for superior noise immunity. The SN75179BDR operates with a 5 V single power supply, draws 70 mA of current, and includes thermal shutdown protection to prevent damage during line fault conditions. Its wide operating temperature range (0°C to +70°C) and ESD-protected bus pins enhance reliability in harsh environments.
Key Features and Applications
The SN75179BDR excels in applications requiring reliable, high-speed communication over long cables, such as factory automation, wireless infrastructure, power monitoring, HVAC systems, video surveillance, and building automation. Its differential signaling minimizes electromagnetic interference (EMI) and crosstalk, while the ±7 V to +12 V common-mode input voltage range ensures compatibility with noisy industrial environments. The device supports hot-plugging and includes a shutdown mode to reduce power consumption when not in use.
Alternative 1/1 Transceiver Models
● SN75179BPSR: Pin-compatible with SN75179BDR, offering identical RS-422/RS-485 support and 10 Mbps data rate.
● SN75179BDE4: Enhanced version with improved ESD protection and extended temperature range (-40°C to +85°C).
● SN75179BDRG4: Features a lower power-supply voltage (3 V to 5.5 V) and reduced current consumption for battery-powered applications.
● MAX485E: A competitive alternative with auto-direction control, supporting up to 250 kbps data rates in half-duplex mode.
