Key Specifications

 

The UM3783S8 is ±70V fault-protected, half-duplex, RS-485 transceiver operating on a single 4.5V 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.

The device feature integrated IEC ESD protection, eliminating the need for external system-level protection components. Extended ±15V 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 UM3783S8 is available in SOP8 package for space-constrained applications. The device is characterized over ambient free-air temperatures from –40°C to 125°C.
 

- Meets or exceeds the requirements of the TIA/EIA-485A standardsps 
- 4.5V to 5.5V supply voltage
- Differential output exceeds 2.1 V for PROFIBUS compatibility with 5V supply
- Bus I/O protection : ±70V DC bus fault
- Half-duplex device available in 500 kbps
- Extended ambient temperature range: -40°C to 125°C
- Extended operational common-mode range: ±15 V
- Open, short, and idle bus failsafe
- Thermal shutdown
- 1/8 unit load (up to 256 bus nodes)
- Small SOP8 package
  

 

- Motor drives

- Factory automation and control

- HVAC systems

- Building automation

 

Part Number	Operating Temperature	Mark Code	Package Type	Shipping Qty
UM3783S8	-40°C to +125°C	UM3783S8	SOP8	3000pcs/13 Inch Tape & Reel