Overview
The SN65LBC179DR, produced by Texas Instruments, is a low-power differential line driver and receiver pair designed for high-speed multipoint data transmission over long cables. These monolithic integrated circuits are balanced, or differential, voltage mode devices that meet or exceed the requirements of industry standards ANSI RS-485 and ISO 8482:1987(E). The devices combine a differential line driver and differential line receiver, operating from a single 5-V supply, and are suitable for point-to-point or multipoint data bus applications. They feature low power consumption, precision, and robustness thanks to TI’s proprietary LinBiCMOS technology, which integrates the benefits of CMOS and bipolar transistors.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage (Nominal) | 5 | V |
| Operating Temperature Range | -40 to 85 | °C |
| Common Mode Range | -7 to 12 | V |
| Maximum Signaling Rate | 10 | Mbps |
| Maximum Supply Current (ICC) | 5 | mA |
| Package Type | SOIC (8-pin) | |
| Number of Transmitters (TX) | 1 | |
| Number of Receivers (RX) | 1 | |
| Number of Nodes | 32 | |
| Driver Thermal Shutdown Temperature | Approximately 172 | °C |
| Positive- and Negative-Output Current Limiting | Yes |
Key Features
- Designed for high-speed multipoint data transmission over long cables.
- Operates with pulse widths as low as 30 ns.
- Low supply current: 5 mA maximum.
- Meets or exceeds the standard requirements of ANSI RS-485 and ISO 8482:1987(E).
- Wide common-mode voltage range of -7 V to 12 V.
- Positive- and negative-output current limiting.
- Driver thermal shutdown protection.
- Pin compatible with the SN75179B.
- Full-duplex operation with separate terminals for driver and receiver.
- Minimum loading to the bus when powered off (VCC = 0).
Applications
The SN65LBC179DR is suitable for various applications requiring high-speed data transmission over long cables, including:
- Point-to-point and multipoint data bus systems.
- Industrial automation and control systems.
- Automotive systems (for the SN65LBC179Q variant).
- Telecommunications and networking equipment.
- Any system requiring reliable, high-speed differential signaling.
Q & A
- What is the nominal supply voltage for the SN65LBC179DR?
The nominal supply voltage is 5 V.
- What is the operating temperature range for the SN65LBC179DR?
The operating temperature range is -40°C to 85°C.
- What is the maximum signaling rate of the SN65LBC179DR?
The maximum signaling rate is 10 Mbps.
- Does the SN65LBC179DR support full-duplex operation?
- What is the common-mode voltage range of the SN65LBC179DR?
The common-mode voltage range is -7 V to 12 V.
- Does the SN65LBC179DR have thermal shutdown protection?
- How many nodes can the SN65LBC179DR support?
- Is the SN65LBC179DR pin compatible with other devices?
- What is the maximum supply current of the SN65LBC179DR?
The maximum supply current is 5 mA.
- What type of package is the SN65LBC179DR available in?
