Overview
The SN75LBC184DG4 is a differential data line transceiver produced by Texas Instruments. It is designed in the trade-standard footprint of the SN75176 and features built-in protection against high-energy noise transients. This device is a 5V, half-duplex RS-485 transceiver that integrates transient voltage suppressors, providing enhanced reliability and immunity to noise transients. It is suitable for applications requiring reliable data transmission in electrically noisy environments.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage | 4.75V to 5.25V | V |
| Operating Temperature | 0°C to 70°C | °C |
| Data Rate | 250kbps | kbps |
| Package Type | 8-SOIC | - |
| Number of Drivers/Receivers | 1/1 | - |
| Duplex Mode | Half-Duplex | - |
| Receiver Hysteresis | 70mV | mV |
| ESD Protection | ±30kV IEC 61000-4-2, ±15kV EIA/JEDEC Human Body Model | kV |
| Circuit Damage Protection | 400W peak (typical) per IEC 61000-4-5 | W |
Key Features
- Integrated transient voltage suppression to protect against high-energy noise transients.
- ESD protection for bus terminals exceeding ±30kV IEC 61000-4-2 and ±15kV EIA/JEDEC Human Body Model.
- Circuit damage protection of 400W peak (typical) per IEC 61000-4-5.
- Controlled driver output-voltage slew rates allowing for longer cable stub lengths.
- Support for data transmission up to 250kbps in electrically noisy environments.
- Open-circuit fail-safe receiver design.
- 1/4 unit load, allowing for up to 128 devices connected on the bus.
- Thermal shutdown protection and power-up and power-down glitch protection.
- Compliance with TIA/EIA-485 (RS-485) and ISO/IEC 8482:1993(E) standards.
- Low disabled supply current of 300μA maximum.
- Pin compatible with SN75176.
Applications
- Industrial networks.
- Utility meters.
- Motor control systems.
Q & A
- What is the primary function of the SN75LBC184DG4?
The SN75LBC184DG4 is a differential data line transceiver designed for RS-485 communication, providing reliable data transmission in noisy environments.
- What are the key protection features of the SN75LBC184DG4?
The device features integrated transient voltage suppression, ESD protection up to ±30kV, and circuit damage protection of 400W peak.
- What is the maximum data rate supported by the SN75LBC184DG4?
The SN75LBC184DG4 supports data transmission up to 250kbps.
- What is the operating temperature range of the SN75LBC184DG4?
The operating temperature range is from 0°C to 70°C.
- What type of package is the SN75LBC184DG4 available in?
The device is available in an 8-SOIC package.
- How many devices can be connected on the bus using the SN75LBC184DG4?
Up to 128 devices can be connected on the bus due to its 1/4 unit load capability.
- Does the SN75LBC184DG4 meet any specific industry standards?
Yes, it meets or exceeds the requirements of TIA/EIA-485 (RS-485) and ISO/IEC 8482:1993(E) standards.
- What is the typical supply current when the device is disabled?
The typical supply current when disabled is 300μA maximum.
-
Yes, it is pin compatible with the SN75176.
- What kind of receiver design does the SN75LBC184DG4 use?
The device uses an open-circuit fail-safe receiver design.
