Texas Instruments ISO3086
The ISO3080 and ISO3086 devices are isolated fullduplex differential line drivers and receivers while the ISO3082 and ISO3088 devices are isolated halfduplex differential line transceivers for TIA/EIA 485/422 applications. These devices are ideal for long transmission lines because 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 60 s per UL 1577 between the bus-line transceiver and the logic-level interface.FEATURES
●1 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-VPK Basic Insulation, 560 VPK VIORM per DIN V VDE V 0884-10 (VDE V 0884-10): 2006-12 and DIN EN 61010-1 – 2500 VRMS Isolation per UL 1577 – 4000 VPK Isolation per CSA Component Acceptance Notice 5A and IEC 60950-1 2
APPLICATIONS
● Security Systems● Chemical Production
● Factory Automation
● Motor and Motion Control
● HVAC and Building Automation Networks
● Networked Security Stations 3
DESCRIPTION
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 nearby sensitive circuitry if they are of sufficient magnitude and duration.