ADM1485AR

The ADM1485AR boasts an impressive common-mode range of –7 V to +12 V. This wide range allows it to tolerate significant voltage differentials, making it suitable for harsh industrial environments where voltage fluctuations are common.

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Description

Technical Parameters

The ADM1485AR CAN transceiver is a high-performance device that meets the EIA RS-485 standard and offers a data rate of 30 Mbps. Operating on a single 5 V supply, it provides a broad common-mode range of -7 V to +12 V and features high-speed, low-power BiCMOS technology. With thermal shutdown and short-circuit protection, low propagation delays for both drivers and receivers, and high-Z outputs with power off, it ensures reliable and efficient data communication. This versatile transceiver finds applications in low-power RS-485 systems, DTE-DCE interfaces, packet switching, local area networks, data concentration, data multiplexers, and integrated services digital networks (ISDN). Whether for power efficiency or high-speed data transfer, the ADM1485AR is a superior solution for a wide range of industries and communication systems.

product-1269-1146

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Mfr Part	ADM1485AR	ADM1485ARM	ADM1485ARMZ	ADM1485ARMZ-REEL	ADM1485ARMZ-REEL7	ADM1485ARMZ-REEL7	ADM1485AR-REEL7	ADM1485ARZ	ADM1485ARZ-REEL	ADM1485ARZ-REEL
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	IC TRANSCEIVER RS485_422	IC TRANSCEIVER RS485_422	IC TRANSCEIVER RS485_422	IC TRANSCEIVER RS485_422
Stock	40000	40000	40000	40000	40000	40000	40000	40000	40000	40000
Product Status	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active
Type	Transceiver	Transceiver	Transceiver	Transceiver	Transceiver	Transceiver	Transceiver	Transceiver	Transceiver	Transceiver
Protocol	RS422, RS485	RS422, RS485	RS422, RS485	RS422, RS485	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.	1/1.	1/1.	1/1.	1/1.
Duplex	Half	Half	Half	Half	Half	Half	Half	Half	Half	Half
Receiver Hysteresis	70 mV	70 mV	70 mV	70 mV	70 mV	70 mV	70 mV	70 mV	70 mV	70 mV
Data Rate	30Mbps	30Mbps	30Mbps	30Mbps	30Mbps	30Mbps	30Mbps	30Mbps	30Mbps	30Mbps
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	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	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Package / Case	SOP8(3.9x1.27)	MSOP8(3.0x0.64)	MSOP8(3.0x0.64)	MSOP8(3.0x0.64)	MSOP8(3.0x0.64)	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)	Tape & Reel (TR)	Tape & Reel (TR)	Tape & Reel (TR)	Tape & Reel (TR)

APPLICATIONS ：

·Low Power RS-485 Systems

·DTE-DCE Interface

·Packet Switching

·Local Area Networks

·Data Concentration

·Data Multiplexers

·Integrated Services Digital Network (ISDN)

GENERAL DESCRIPTION:

The ADM1485 is a differential line transceiver suitable for high speed bidirectional data communication on multipoint bus transmission lines. It is designed for balanced data transmission and complies with both RS-485 and RS-422 EIA Standards. The part contains a differential line driver and a differential line receiver. Both the driver and the receiver may be enabled independently. When disabled, the outputs are three-stated.

The ADM1485 operates from a single 5 V power supply. Excessive power dissipation caused by bus contention or by output shorting is prevented by a thermal shutdown circuit. This feature forces the driver output into a high impedance state if, during fault conditions, a significant temperature increase is detected in the internal driver circuitry.

Up to 32 transceivers may be connected simultaneously on a bus, but only one driver should be enabled at any time. It is important, therefore, that the remaining disabled drivers do not load the bus. To ensure this, the ADM1485 driver features high output impedance when disabled and also when powered down.

This minimizes the loading effect when the transceiver is not being used. The 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 ADM1485 is fabricated on BiCMOS, an advanced mixed technology process combining low power CMOS with fast switching bipolar technology. All inputs and outputs contain protection against ESD; all driver outputs feature high source and sink current capability. An epitaxial layer is used to guard against latch-up.

The ADM1485 features extremely fast switching speeds. Minimal driver propagation delays permit transmission at typical data rates of 30 Mbps while low skew minimizes EMI interference.

The part is fully specified over the commercial and industrial temperature range and is available in PDIP, SOIC, and small MSOP packages.

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