GENERAL DESCRIPTION

The ADM2485 differential bus transceiver is an integrated, galvanically isolated component designed for bidirectional data communication on multipoint bus transmission lines. It is designed for balanced transmission lines and complies with ANSI/TIA/EIA RS-485-A-98 and ISO 8482:1987(E).

FEATURES

Half-duplex, isolated RS-485 transceiver

Integrated oscillator driver for external transformer

PROFIBUS® compliant

Complies with ANSI/TIA/EIA RS-485-A-98 and ISO 8482:1987(E)

Data rate: 16 Mbps

5 V or 3.3 V operation (VDD1)

50 nodes on bus

High common-mode transient immunity: >25 kV/μs

Isolated DE OUT status output

Thermal shutdown protection

Safety and regulatory approvals

UL recognition: 2500 V rms for 1 minute per UL 1577

VDE Certificate of Conformity

DIN V VDE V 0884-10 (VDE V 0884-10):2006-12 Reinforced insulation, VIORM = 560 V peak

Operating temperature range: –40°C to +85°C

Wide-body, 16-lead SOIC package

APPLICATIONS

Isolated RS-485/RS-422 interfaces

PROFIBUS networks

Industrial field networks

Multipoint data transmission systems