Overview
The SN65LBC174DW, produced by Texas Instruments, is a quadruple low-power differential line driver designed to meet the requirements of the Electronics Industry Association Standard EIA-485. This device is optimized for balanced multipoint bus transmission at high data rates, making it suitable for applications in noisy environments. The SN65LBC174DW is part of the LinBiCMOS™ family, which facilitates ultralow power consumption and inherent robustness. It is available in a 20-terminal wide-body small outline integrated circuit (SOIC) package.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VCC) | 4.75 | 5 | 5.25 | V |
| Operating Free-Air Temperature (TA) | -40 | 85 | °C | |
| Differential Output Voltage (VOD) | 1.1 | 1.8 | 5 | V (RL = 54Ω) |
| Common-Mode Output Voltage (VOC) | -1 | 3 | V | |
| High-Level Output Current (IOH) | -60 | mA | ||
| Low-Level Output Current (IOL) | 60 | mA | ||
| Supply Current (ICC) | 7 | mA (Outputs enabled) | ||
| Supply Current (ICC) | 1.5 | mA (Outputs disabled) |
Key Features
- Meets or exceeds the standard EIA-485.
- Designed for high-speed multipoint transmission on long bus lines in noisy environments.
- Supports data rates up to and exceeding 10 million bits per second.
- Common-mode output voltage range of –7V to 12V.
- Positive- and negative-current limiting.
- Thermal-shutdown protection.
- Low power consumption: 1.5mA max (output disabled).
- Functionally interchangeable with SN75174.
- Available in 16-terminal DIP and 20-terminal wide-body SOIC packages.
Applications
- Chemical and gas sensors.
- Field transmitters: temperature sensors and pressure sensors.
- Motor drives: brushless DC and brushed DC.
- Temperature sensors and controllers using Modbus.
Q & A
- What is the primary function of the SN65LBC174DW?
The SN65LBC174DW is a quadruple low-power differential line driver designed for high-speed multipoint bus transmission.
- What standard does the SN65LBC174DW comply with?
The SN65LBC174DW meets or exceeds the Electronics Industry Association Standard EIA-485.
- What is the maximum data rate supported by the SN65LBC174DW?
The device supports data rates up to and exceeding 10 million bits per second.
- What is the common-mode output voltage range of the SN65LBC174DW?
The common-mode output voltage range is –7V to 12V.
- Does the SN65LBC174DW have thermal protection?
- What are the package options for the SN65LBC174DW?
The device is available in 16-terminal DIP and 20-terminal wide-body SOIC packages.
- What is the operating temperature range for the SN65LBC174DW?
The operating free-air temperature range is –40°C to 85°C.
- How much power does the SN65LBC174DW consume when outputs are disabled?
The device consumes a maximum of 1.5mA when outputs are disabled.
- Is the SN65LBC174DW functionally interchangeable with other devices?
- What are some typical applications of the SN65LBC174DW?
Typical applications include chemical and gas sensors, field transmitters, motor drives, and temperature sensors and controllers using Modbus.
