Texas InstrumentsISO35TEVM-434

The smaller EVM version shows the customer the spaced required for their design. This circuit provides an isolated, 20 Mbps. 3.3V to 3.3V RS-485 interface using the ISO35T, isolated RS-485 transceiver and the TPS76333 high accuracy linear regulator. This circuit achieves signal and power isolation and at the same time decreases space and power consumption.

• 4000V peak Isolation
• Bus pin ESD protection
  - 16KV HBM between bus pins and GND2
  - 6KV HBM between bus pins and GND1
• 1/8 unit load - up to 256 nodes on a bus
• Designed to RS-485 and RS-422 applications
• Signaling rates up to 1 Mbps
• Thermal shutdown protection
• Low bus capacitance 16 pF (typ)
• 50 KV/us typical transient immunity
• UL 1577, IEC 60747-5-2 (VDE 0884, Rev. 2) approval pending
• Fail-safe receiver for bus open, short or idle
• Logic inputs are 5V tolerant

• SLUU470, ISO35T EVM-434 Description. (Rev. B)
• SLLSE26, Isolated 3V 485 Transceiver with integrated transformer driver (Rev. C)

SLUU470, ISO35T EVM-434 Description. (Rev. B)

SLLSE26, Isolated 3V 485 Transceiver with integrated transformer driver (Rev. C)