Analog Devices / Maxim Integrated MAX14775E/MAX14776E RS-485/RS-422 Transceivers
Analog Devices MAX14775E/MAX14776E RS-485/RS-422 Transceivers are fault-protected RS-485/RS-422 transceivers with ±65V protection. These Analog Devices devices are designed for overvoltage signal faults on communication bus lines, ensuring communication in harsh industrial environments. Each device contains one driver and one receiver and operates over the 3V to 5.5V supply range. The MAX14775E is optimized for high-speed data rates up to 20Mbps. The MAX14776E features slew-rate limited outputs for data rates up to 500kbps. These transceivers are optimized for robust communication in noisy environments. A large 200mV (typ) hysteresis on receiver inputs ensures high noise rejection. A fail-safe feature guarantees a logic high on the receiver output when the inputs are open or shorted. Driver outputs are protected against short-circuit conditions.
Features
- Integrated protection ensures robust communication
- ±65V fault protection range on driver outputs/receiver inputs
- ±25V common-mode range on the receiver inputs
- Large receiver hysteresis increases noise tolerance
- Hot-swap protection
- Thermal shutdown
- A high-performance transceiver enables flexible designs
- Compliant with RS-485 EIA/TIA-485 standard
- 20Mbps (MAX14775E)/500kbps (MAX14776E) maximum data rate
- 3V to 5.5V supply range
- Up to 100 devices on the bus
Applications
- HVAC
- Industrial field bus networks
- Motion controllers
Functional Diagram
Associated Product
Analog Devices / Maxim Integrated MAX14775EEVKIT Evaluation Kit
Fully assembled PCB that demonstrates the MAX14775, an RS-485/RS-422 fault-protected transceiver.
Publicerad: 2017-06-07
| Uppdaterad: 2023-04-10