DESCRIPTION
●The ISO3080, and ISO3086 are isolated full-duplex differential line drivers and receivers while the ISO3082, and ISO3088 are isolated half-duplex differential line transceivers for TIA/EIA 485/422 applications.
●These devices are ideal for long transmission lines since the ground loop is broken to allow for a much larger common-mode voltage range. The symmetrical isolation barrier of the device is tested to provide 2500 Vrms of isolation for 60s between the bus-line transceiver and the logic-level interface.
●Any cabled I/O can be subjected to electrical noise transients from various sources. These noise transients can cause damage to the transceiver and/or near-by sensitive circuitry if they are of sufficient magnitude and duration. These isolated devices can significantly increase protection and reduce the risk of damage to expensive control circuits.
●The ISO3080, SO3082, ISO3086 and ISO3088 are qualified for use from –40°C to 85°C.
●FEATURES
●• 4000-VPEAK Isolation
●• Bus-Pin ESD Protection
●– 16 kV HBM Between Bus Pins and GND2
●– 6 kV HBM Between Bus Pins and GND1
●• 1/8 Unit Load – Up to 256 Nodes on a Bus
●• Meets or Exceeds TIA/EIA RS-485 Requirements
●• Signaling Rates up to 20 Mbps
●• Thermal Shutdown Protection
●• Low Bus Capacitance – 16 pF (Typ)
●• 50 kV/µs Typical Transient Immunity
●• Fail-safe Receiver for Bus Open, Short, Idle
●• 3.3-V Inputs are 5-V Tolerant
●APPLICATIONS
●• Security Systems
●• Chemical Production
●• Factory Automation
●• Motor/Motion Control
●• HVAC and Building Automation Networks
●• Networked Security Stations
