ISO3086DWG4

隔离式5V全和半双工RS -485收发器 ISOLATED 5-V FULL AND HALF-DUPLEX RS-485 TRANSCEIVERS

DESCRIPON

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