Overview
The SN75LBC174DWR, produced by Texas Instruments, is a monolithic, quadruple 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 SN75LBC174DWR is part of the LinBiCMOS™ family, which ensures ultra-low power consumption and inherent robustness.
The device features 3-state outputs and is available in 16-terminal DIP and 20-terminal wide-body SOIC packages. It is characterized for operation over the commercial temperature range of 0°C to 70°C, making it versatile for various industrial and commercial applications.
Key Specifications
| Parameter | Min | Nom | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VCC) | 4.75 | 5 | 5.25 | V |
| High-level Input Voltage (VIH) | - | 2 | - | V |
| Low-level Input Voltage (VIL) | 0.8 | - | - | V |
| Output Voltage Range (VO) | -10 | - | 15 | V |
| Common-mode Output Voltage Range | -7 | - | 12 | V |
| High-level Output Current (IOH) | -60 | - | - | mA |
| Low-level Output Current (IOL) | 60 | - | - | mA |
| Supply Current (ICC) - No Load, Outputs Enabled | - | - | 7 | mA |
| Supply Current (ICC) - No Load, Outputs Disabled | - | - | 1.5 | mA |
| Operating Free-air Temperature Range | 0 | - | 70 | °C |
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 ten million transfers per second.
- Common-mode output voltage range of –7V to 12V.
- Positive- and negative-current limiting.
- Low power consumption: 1.5mA max (output disabled).
- Functionally interchangeable with SN75174.
- Thermal-shutdown protection.
- 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 standard that the SN75LBC174DWR complies with?
The SN75LBC174DWR meets or exceeds the EIA-485 standard.
- What is the maximum data rate supported by the SN75LBC174DWR?
The device supports data rates up to and exceeding ten million transfers per second.
- What is the common-mode output voltage range of the SN75LBC174DWR?
The common-mode output voltage range is –7V to 12V.
- Does the SN75LBC174DWR have current limiting features?
Yes, it features positive- and negative-current limiting.
- What is the maximum power consumption of the SN75LBC174DWR when outputs are disabled?
The maximum power consumption is 1.5mA when outputs are disabled.
- Is the SN75LBC174DWR functionally interchangeable with any other device?
Yes, it is functionally interchangeable with the SN75174.
- What types of packages are available for the SN75LBC174DWR?
The device is available in 16-terminal DIP and 20-terminal wide-body SOIC packages.
- What is the operating temperature range for the SN75LBC174DWR?
The operating temperature range is 0°C to 70°C.
- Does the SN75LBC174DWR have thermal-shutdown protection?
Yes, it features thermal-shutdown protection.
- What are some common applications of the SN75LBC174DWR?
Common applications include chemical and gas sensors, field transmitters, motor drives, and temperature sensors and controllers using Modbus.
