ISO3086TDWR UART Interface IC Digital Isolators ISOLATED 485 XCEIVER
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ISO3086TDWR UART Interface IC Digital Isolators ISOLATED 485 XCEIVER
1 Features
- Meets or Exceeds TIA/EIA-485-A
-
Signaling Rate up to 20 Mbps
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1/8UnitLoad–Upto256NodesonaBus
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Thermal Shutdown Protection
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Typical Efficiency > 60% (ILOAD = 100 mA) - see
SLUU469
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Low Bus Capacitance 7 pF (Typ)
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50-kV/μs Typical Transient Immunity
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Fail-safe Receiver for Bus Open, Short, Idle
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Logic Inputs are 5-V Tolerant
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Bus-Pin ESD Protection
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– 11-kV HBM Between Bus-Pins and GND2
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– 6-kV HBM Between Bus-Pins and GND1
-
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Safety and Regulatory Approvals
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– 4242 VPK Basic Insulation per DIN V VDE V 0884-10 and DIN EN 61010-1
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– 2500 VRMS Isolation for 1 minute per UL 1577
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– CSA Component Acceptance Notice 5A, IEC 60950-1 and IEC 61010-1 Standards
-
2 Applications
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Isolated RS-485/RS-422 Interfaces
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Factory Automation
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Motor/Motion Control
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HVAC and Building Automation Networks
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Networked Security Stations
3 Description
The ISO3086T is an isolated differential line transceiver with integrated oscillator outputs that provide the primary voltage for an isolation transformer. The device is a full-duplex differential line transceiver for RS-485 and RS-422 applications that can easily be configured for half-duplex operation by connecting pin 11 to pin 14, and pin 12 to pin 13.
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 4242 VPK of isolation for 1 minute per VDE 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 ISO3086T is specified for use from –40°C to 85°C.
Device Information
|
PART NUMBER |
PACKAGE |
BODY SIZE (NOM) |
|
ISO3086T |
SOIC (16) |
10.30 mm × 7.50 mm |
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