Overview
The SN65LBC184DR is a differential data line transceiver produced by Texas Instruments, designed to meet the requirements of TIA/EIA-485 (RS-485) and ISO/IEC 8482:1993(E) standards. This device is built in the trade-standard footprint of the SN75176 and features integrated transient voltage suppression, providing enhanced reliability and immunity to high-energy noise transients. It is particularly useful for applications requiring a reliable, low-cost, direct-coupled data line interface without the need for external components or isolation transformers.
Key Specifications
| Specification | Value |
|---|---|
| Package | SOIC (D) with 8 pins |
| Operating Temperature Range | -40°C to 85°C |
| Supply Voltage | 4.75V to 5.25V |
| Data Rate | Up to 250kbps |
| ESD Protection | ±30kV IEC 61000-4-2 (contact and air-gap discharge) |
| Circuit Damage Protection | 400W peak (typical) per IEC 61000-4-5 |
| Disabled Supply Current | 300µA maximum |
| Pin Compatibility | Pin compatible with SN75176 |
| Bus Load | 1/4 Unit load, allowing for 128 devices on the bus |
Key Features
- Integrated transient voltage suppression
- ESD protection for bus terminals exceeding ±30kV IEC 61000-4-2
- Circuit damage protection of 400W peak (typical) per IEC 61000-4-5
- Controlled driver output-voltage slew rates for longer cable stub lengths
- Open-circuit fail-safe receiver design
- Thermal shutdown protection
- Power-up and power-down glitch protection
- Low disabled supply current of 300µA maximum
- Pin compatible with SN75176
Applications
- Industrial networks
- Utility meters
- Motor control
Q & A
- What is the SN65LBC184DR used for?
The SN65LBC184DR is used as a differential data line transceiver in applications requiring reliable RS-485 communication. - What are the key features of the SN65LBC184DR?
Key features include integrated transient voltage suppression, ESD protection, circuit damage protection, and thermal shutdown protection. - What is the operating temperature range of the SN65LBC184DR?
The operating temperature range is -40°C to 85°C. - What is the maximum data rate supported by the SN65LBC184DR?
The device supports data rates up to 250kbps. - How many devices can be connected on the bus using the SN65LBC184DR?
Up to 128 devices can be connected on the bus due to its 1/4 unit load capability. - Is the SN65LBC184DR pin compatible with other devices?
Yes, it is pin compatible with the SN75176. - What kind of ESD protection does the SN65LBC184DR offer?
The device offers ESD protection exceeding ±30kV IEC 61000-4-2 for both contact and air-gap discharge. - Does the SN65LBC184DR have thermal shutdown protection?
Yes, it includes thermal shutdown protection. - What is the typical circuit damage protection of the SN65LBC184DR?
The device provides circuit damage protection of 400W peak (typical) per IEC 61000-4-5. - What is the maximum disabled supply current of the SN65LBC184DR?
The maximum disabled supply current is 300µA.
