ISO308x Isolated 5-V Full- and Half-Duplex RS-485 Transceivers

1 Features

Meets or exceeds TIA/EIA RS-485 requirements
Signaling rates up to 20 Mbps
1/8 unit load – up to 256 nodes on a bus
Thermal shutdown protection
Low bus capacitance – 16 pF (typical)
50 kV/μs typical transient immunity
Fail-safe receiver for bus open, short, idle
3.3-V inputs are 5-V tolerant
Bus-pin ESD protection
- 12-kV HBM between bus pins and GND2
- 6-kV HBM between bus pins and GND1
Safety-related certifications:
- 4000-V_PK basic insulation, 560 V_PK V_IORM per DIN EN IEC 60747-17 (VDE 0884-17)
- 2500 V_RMS isolation per UL 1577
- 4000 V_PK isolation per CSA 62368-1