ADM3065EBRZ

RS-485接口IC /RS-422 Transceiver RS-422 Transceiver

Product Details

The ADM3065E is a 3.0 V to 5.5 V, IEC electrostatic discharge ESD protected RS-485 transceiver, allowing the device to withstand ±12 kV contact discharges on the transceiver bus pins without latch-up or damage. The ADM3066E features a VIO logic supply pin allowing a flexible digital interface capable of operating as low as 1.62 V.

The ADM3065E/ADM3066E are suitable for high speed, 50 Mbps, bidirectional data communication on multipoint bus transmission lines. The ADM3065E/ADM3066E feature a ¼ unit load input impedance, which allows up to 128 transceivers on a bus.

The ADM3065E/ADM3066E are half-duplex RS-485 transceivers, fully compliant to the Profibus® standard with increased 2.1 V bus differential voltage at VCC ≥ 4.5 V.

The RS-485 transceivers are available in a number of space-saving packages, such as a 10-lead, 3 mm × 3 mm LFCSP package, an 8-lead, 3 mm × 3 mm MSOP package, a 10-lead, 3 mm × 3 mm MSOP package, and an 8-lead, narrow body SOIC package. Models with operating temperature ranges of −40°C to +125°C and −40°C to +85°C are available.

Excessive power dissipation caused by bus contention or by output shorting is prevented by a thermal shutdown circuit. If, during fault conditions, a significant temperature increase is detected in the internal driver circuitry, this feature forces the driver output into a high impedance state.

The ADM3065E/ADM3066E guarantee a logic high receiver output when the receiver inputs are shorted, open, or connected to a terminated transmission line with all drivers disabled.

**Applications**

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Industrial fieldbuses

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Process control

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Building automation

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Profibus networks

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Motor control servo drives and encoders

### Features and Benefits

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TIA/EIA RS-485 compliant over full supply range

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3.0 V to 5.5 V operating voltage range on VCC

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ESD protection on the bus pins

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IEC 61000-4-2 ≥ ±12 kV contact discharge

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IEC 61000-4-2 ≥ ±12 kV air discharge

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HBM ≥ ±30 kV

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Full hot swap support glitch free power-up/power-down

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High speed 50 Mbps data rate

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Full receiver short circuit, open circuit, and bus idle failsafe

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Extended temperature range up to 125°C

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Profibus compliant at VCC ≥ 4.5 V

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Half-duplex

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Allows connection of up to 128 nodes onto the bus

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Space-saving package options

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10-lead 3 mm × 3 mm LFCSP package

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8-lead and 10-lead MSOP packages