ADI ADM2484EBRWZ-REEL7

The ADM2484E is an isolated data transceiver with ±15 kV ESD protection suitable for high speed, half- or full- duplex communication on multipoint transmission lines. For halfduplex operation, the transmitter outputs and receiver inputs share the same transmission line. Transmitter Output Pin Y links externally to Receiver Input Pin A, and Transmitter Output Pin Z links externally to Receiver Input Pin B.

Designed for balanced transmission lines, the ADM2484E complies with ANSI TIA/EIA RS- 485- A- 1998 and ISO 8482: 1987(E). The device employs iCoupler technology to combine a 3- channel isolator, a three- state differential line driver, and a differential input receiver into a single package.

The differential transmitter outputs and receiver inputs feature electrostatic discharge circuitry that provides protection up to ±15 kV using the human body model (HBM). The logic side of the device can be powered with either a 5 V or a 3.3 V supply, whereas the bus side requires an isolated 3.3 V supply.

The device has current- limiting and thermal shutdown features to protect against output short circuits and situations where bus contention causes excessive power dissipation.

• Isolated, RS- 485/RS- 422 transceiver, configurable as half- or full- duplex
• ±15 kV ESD protection on RS- 485 input/output pins
• 500 kbps data rate
• Complies with ANSI TIA/EIA RS- 485- A- 1998 and ISO 8482:1987(E)
• Suitable for 5 V or 3.3 V operation (VDD1)
• High common- mode transient immunity: >25 kV/μs
• True fail- safe receiver inputs
• 256 nodes on the bus
• Thermal shutdown protection
• Safety and regulatory approvals: UL recognition 5000 V rms isolation voltage for 1 minute per UL1577, VDE certificate of conformity DIN V VDE V 0884- 10 (VDE V 0884- 10):2006- 12, Reinforced insulation, VFORM = 849 VPEAK, CSA Component Acceptance Notice #5A, IEC 60950- 1:380 V rms (reinforced)
• Operating temperature range: - 40℃ to +85℃
• Wide body, 16- lead SOIC package

• Isolated RS- 485/RS- 422 interfaces
• Industrial field networks
• INTERBUS
• Multipoint data transmission systems