ADM483AR

The ADM483AR RS-485 transceiver, with its impressive array of features, is a versatile solution for serial communication applications. Whether in industrial automation, telecommunications, or other fields requiring reliable data transmission over extended distances, the ADM483AR stands out as a robust and efficient choice.

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Description

Technical Parameters

The ADM483AR RS-485 transceiver, characterized by its compliance with EIA RS-485/RS-422 standards, stands as a versatile solution for serial communication. Operating at data rates up to 250 kbps, it offers low power consumption (120 μA) and slew-rate limiting for reduced EMI. Supporting up to 32 transceivers on a single bus, it provides flexibility in system design. Noteworthy features include a wide common-mode range (-7 V to +12 V), high-impedance output when disabled, and protection mechanisms like thermal shutdown and short-circuit protection. Pin compatibility with MAX483 and a specified temperature range of -40°C to +85°C further enhance its appeal, making the ADM483AR a robust and efficient choice for applications requiring reliable data transmission over extended distances.

product-1267-862

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Mfr Part	ADM483AR	ADM483AR-REEL	ADM483AR-REEL7	ADM483ARZ	ADM483ARZ-REEL	ADM483ARZ-REEL7
Description	IC TRANSCEIVER RS485_422	IC TRANSCEIVER RS485_422	IC TRANSCEIVER RS485_422	IC TRANSCEIVER RS485_422	IC TRANSCEIVER RS485_422	IC TRANSCEIVER RS485_422
Stock	40000	40000	40000	40000	40000	40000
Product Status	Active	Active	Active	Active	Active	Active
Type	Transceiver	Transceiver	Transceiver	Transceiver	Transceiver	Transceiver
Protocol	RS422, RS485	RS422, RS485	RS422, RS485	RS422, RS485	RS422, RS485	RS422, RS485
Number of Drivers/Receivers	1/1.	1/1.	1/1.	1/1.	1/1.	1/1.
Duplex	Half	Half	Half	Half	Half	Half
Receiver Hysteresis	70 mV	70 mV	70 mV	70 mV	70 mV	70 mV
Data Rate	250kbps	250kbps	250kbps	250kbps	250kbps	250kbps
Voltage - Supply	4.75V ~ 5.25V	4.75V ~ 5.25V	4.75V ~ 5.25V	4.75V ~ 5.25V	4.75V ~ 5.25V	4.75V ~ 5.25V
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Package / Case	SOP8(3.9x1.27)	SOP8(3.9x1.27)	SOP8(3.9x1.27)	SOP8(3.9x1.27)	SOP8(3.9x1.27)	SOP8(3.9x1.27)
Package	Tape & Reel (TR)	Tape & Reel (TR)	Tape & Reel (TR)	Tape & Reel (TR)	Tape & Reel (TR)	Tape & Reel (TR)

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·Low power RS-485 applications

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The ADM483 is a low power differential line transceiver suitable for half-duplex data communication on multipoint bus transmission lines. It is designed for balanced data transmission, and complies with EIA Standards RS-485 and RS-422.The part contains a differential line driver and a differential line receiver. Both share the same differential pins, with either the driver or the receiver being enabled at any given time.

The device has an input impedance of 12 kΩ, allowing up to 32 transceivers on one bus. Since only one driver should be enabled at any time, the output of a disabled or powered-down driver is three-stated to avoid overloading the bus. This high impedance driver output is maintained over the entire common-mode voltage range from –7 V to +12 V.

The receiver contains a fail-safe feature that results in a logic high output state if the inputs are unconnected (floating).

The driver outputs are slew-rate limited to reduce EMI and data errors caused by reflections from improperly terminated buses. Excessive power dissipation caused by bus contention or by output shorting is prevented by a thermal shutdown circuit.

The part is fully specified over the industrial temperature range, and is available in an 8-lead SOIC package.

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