ISL3158EIUZ-T-TUDI

The ISL3158 is a half-duplex high-speed transceiver for RS-485/RS-422 communications, incorporating one driver and one receiver. It features fail-safe, overvoltage protection, overcurrent protection, and overtemperature protection, with hot-swap inputs on the /RE and DE ports. The low slew rate driver reduces EMI and reflections caused by improper cable termination, enabling error-free data transmission at up to 500 kbps. Operating from a 5V supply with 1/8 unit load, it allows up to 160 transceivers to be connected on the same bus. The supply voltage range is 4.75~5.25V, with fail-safe, overtemperature protection, current limiting, overvoltage protection, and hot-swap control port inputs. It offers excellent ESD protection, with HBM ±15KV, contact discharge per IEC61000-4-2 ±15KV.

Applications

• PROFIBUS DP and FMS networks
• SCSI "fast40" drivers and receivers
• Motor controller/position encoder systems factory automation
• Fieldbus networks
• Security installations
• Building environment control systems
• Industrial process control networks

Key features

• ESD protection on RS-485 I/O pins: ±15kV, enhanced noise immunity
• High data rate
• 1/8 unit load allows up to 160 devices on bus
• Full fail-safe (open, shorted, terminated/undriven) receiver
• High Rx IOL drive for optocoupler isolation applications
• Hot-plug — Tx and Rx outputs remain tri-state during power-up
• Low quiescent supply current: 4mA
• Current shutdown state: 1mA
• -7V to +12V common-mode input voltage range
• Tri-state Rx and Tx outputs
• Single +5V supply operation (10% tolerance)
• Current limiting and thermal shutdown for driver overload protection
• Lead-free (RoHS compliant)