Key Specifications
Product Description The UM3483HS8 is ±30V fault-protected, half-duplex, RS-485 transceiver operating on a single 3V to 5.5V supply voltage. Bus interface pins are protected against overvoltage conditions during all modes of operation ensuring robust communication in rugged industrial environments.
Extended ±25V input common-mode range guarantees reliable data communication over longer cable run lengths and/or in the presence of large ground loop voltages. Enhanced 250mV receiver hysteresis ensures high noise rejection. In addition, the receiver fail-safe feature guarantees a logic high when the inputs are open or shorted together. The UM3483HS8 is available in SOP8 package for space-constrained applications. The device is characterized over ambient free-air temperatures from –40°C to 125°C. Features
- Meets or exceeds the requirements of the TIA/EIA-485A standardsps
- 3.0V to 5.5V supply voltage - Differential output exceeds 2.1 V for PROFIBUS compatibility with 5V supply - Bus I/O protection : ±30V DC bus fault - ±8kV Human body model (HBM) - Half-duplex device available in 500 kbps - Extended ambient temperature range: -40°C to 125°C - Extended operational common-mode range: ±25 V - Open, short, and idle bus failsafe - Thermal shutdown - 1/8 unit load (up to 256 bus nodes) - Small SOP8 package Applications
- Automotive data links
- Industrial-Control Local Area Networks
- Integrated Services Digital Networks
- Transceivers for EMI-Sensitive Applications
Pin Configurations
Ordering Information
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Application Notes
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