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ADM1485JR

Name: ADM1485JR
Rating: 4.7 (12 reviews)

IC TX/RX RS-485 HS 5V 8SOIC

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規格

Part Status	Obsolete
Type	Transceiver
Protocol	RS485
Number of Drivers/Receivers	1/1
Voltage - Supply	4.75V ~ 5.25V
Mounting Type	Surface Mount
Package / Case	8-SOIC (0.154", 3.90mm Width)
Supplier Device Package	8-SOIC
Base Product Number	ADM1485

概述

Description

The ADM1485JR is a robust, low-power, differential line transceiver designed for RS-485 and RS-422 communication standards. It operates from a single 3V to 5.5V power supply and features a wide common-mode voltage range, making it suitable for long-distance data transmission in noisy environments.
Key specifications include a data rate up to 10 Mbps, integrated fail-safe circuitry that ensures a known state in the absence of a valid input, and high noise immunity. The device supports half-duplex communication and can drive up to 32 transceivers on a single bus.
The ADM1485JR's small footprint and low power consumption make it ideal for various applications, including industrial automation, telecommunications, and remote sensor networks. Its thermal shutdown and short-circuit protection features enhance reliability, ensuring robust performance in demanding conditions.
Overall, the ADM1485JR is an effective solution for reliable, high-speed serial data transmission in multi-point communication systems.

Features

The ADM1485JR is a low-power, high-speed differential line transceiver designed for RS-485 and RS-422 applications. Key features include:
1. Data Rate: Supports data rates up to 2.5 Mbps for reliable communication.
2. Voltage Range: Operates over a wide supply voltage range of 3.0V to 5.5V.
3. Driver/Receiver Configuration: Includes one driver and one receiver, simplifying design for half-duplex communication.
4. Common Mode Range: Supports a wide common-mode voltage range, enhancing noise immunity.
5. Low Power Consumption: Consumes minimal power, making it suitable for battery-operated devices.
6. Thermal Shutdown: Features thermal protection to prevent damage from overheating.
7. Packaging: Available in a compact 8-lead SOIC package, facilitating easy integration into various applications.
8. Fail-Safe Operation: Ensures fail-safe operation in case of loss of power or communication line failures.

These features make the ADM1485JR ideal for industrial automation, building controls, and data acquisition systems.

Package

The ADM1485JR is packaged in a 5-lead TSOT-23 (Thin Small Outline Transistor) package. This compact surface-mount package is designed for space-saving applications.

Pinout

The ADM1485JR is a transceiver for RS-485 and RS-422 communication, featuring a total of 8 pins.
Pin Count and Functions:
1. RO (Receiver Output): Provides the received data.
2. RE (Receiver Enable): Active low; enables the receiver.
3. DE (Driver Enable): Active high; enables the driver.
4. DI (Driver Input): Accepts the data to be transmitted.
5. A (Non-Inverting Input): Differential input for the positive signal.
6. B (Inverting Input): Differential input for the negative signal.
7. GND (Ground): Common ground reference.
8. VCC (Supply Voltage): Power supply pin.
The ADM1485JR supports half-duplex communication and is designed to operate over a wide voltage range, making it suitable for various data communication applications.

Manufacturer

The ADM1485JR is manufactured by Analog Devices, Inc. Analog Devices is a multinational semiconductor company headquartered in Norwood, Massachusetts, USA. It specializes in the design and manufacturing of analog, mixed-signal, and digital signal processing (DSP) integrated circuits. The company serves a wide range of industries, including communications, consumer electronics, automotive, industrial automation, and healthcare, providing high-performance solutions for signal processing and data conversion. Analog Devices is known for its commitment to innovation and quality in the semiconductor field.

Application

The ADM1485JR is a high-speed, low-power RS-485/RS-422 transceiver used in various applications, including industrial automation, data communication networks, remote sensor systems, and automotive networks. It is ideal for long-distance communication in noisy environments, providing robust signal integrity. Other areas include building automation, process control, and any system requiring reliable serial communication over twisted-pair cables.

Equivalent

Equivalent products to the ADM1485JR include the MAX1485, SN75176, and LTC1485. These are all RS-485/RS-422 transceivers that offer similar functionality and performance in terms of data rate, voltage levels, and communication distance. Always verify specifications for compatibility with specific applications.