MAX3485ESA+

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MAX3485ESA+

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IC TRANSCEIVER HALF 1/1 8SOIC

  • Nhà sản xuấtAnalog Devices Inc./Maxim tích hợp

  • Ông. Phần #MAX3485ESA+

  • Có sẵn7445

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Thông số kỹ thuật

thuộc tính Giá trị
Part Status Active
Base Product Number MAX3485
Type Transceiver
Protocol RS422, RS485
Number of Drivers/Receivers 1/1
Duplex Half
Data Rate 10Mbps
Voltage - Supply 3V ~ 3.6V
Operating Temperature -40°C ~ 85°C
Mounting Type Surface Mount
Package 8-SOIC (0.154", 3.90mm Width)
Supplier Device Package 8-SOIC
Packaging Tube
Receiver Hysteresis 50 mV

Tổng quan

Description

The MAX3485ESA+ is a high-speed, low-power transceiver designed for RS-485 and RS-422 communication applications. It operates on a single 3.3V power supply and supports data rates up to 12Mbps, making it suitable for high-speed data transmission in industrial and communication systems.
The device features a differential driver and receiver, facilitating half-duplex communication over long distances and in electrically noisy environments. It has a 1/8-unit load receiver input impedance, allowing up to 256 transceivers on a single bus, which enhances network flexibility and scalability.
Key features include fail-safe receiver inputs that ensure a known output state when inputs are open, shorted, or idle, hence improving system reliability. The device also incorporates thermal shutdown and short-circuit protection to prevent damage under fault conditions.
The MAX3485ESA+ is housed in an 8-pin SOIC package, making it easy to integrate into various circuit designs. Its low power consumption makes it ideal for battery-powered and energy-sensitive applications. This transceiver is widely used in industrial automation, building automation, and various data communication systems.

Equivalent

The MAX3485ESA+ is a RS-485/RS-422 transceiver. Equivalent products include:
1. Texas Instruments SN75176A
2. Texas Instruments THVD1450
3. Texas Instruments MAX485
4. Analog Devices ADM485
5. STMicroelectronics ST485
6. NXP PCA82C250
7. ON Semiconductor NCV485
These alternatives may have slight differences in specifications, so it's important to check the datasheets for compatibility with your application.

Features

The MAX3485ESA+ is a high-performance, low-power transceiver for RS-485 and RS-422 communication. It features half-duplex communication capabilities and operates with a wide supply voltage range from 3.0V to 3.6V. The device supports data rates up to 12Mbps, making it suitable for high-speed applications.
Key features include:
1. Low Power Consumption: Designed for operation in energy-efficient systems.
2. ESD Protection: Ensures device robustness with enhanced electrostatic discharge protection.
3. Wide Operating Temperature Range: Supports temperatures from -40°C to +85°C, suitable for various environments.
4. Fail-Safe: Ensures the receiver outputs a known state when the bus is idle or shorted.
5. Short-Circuit Protection: Safeguards the device against line faults.
6. Small Footprint: Available in 8-pin SOIC package, ideal for space-constrained applications.
These features make the MAX3485ESA+ a reliable choice for industrial automation, process control, and other applications requiring robust RS-485/RS-422 communication.

Pinout

The MAX3485ESA+ is an RS-485/RS-422 transceiver designed for high-speed communication in half-duplex applications. It has an 8-pin configuration with the following pin functions:
1. RO (Receiver Output) - Outputs the received data.
2. RE̅ (Receiver Enable) - Active-low input to enable the receiver.
3. DE (Driver Enable) - Controls the driver; high to enable.
4. DI (Driver Input) - Data input to be transmitted.
5. GND (Ground) - Common ground reference.
6. A (Non-Inverting Receiver Input/Driver Output) - Transmitter/Receiver pin.
7. B (Inverting Receiver Input/Driver Output) - Transmitter/Receiver pin.
8. VCC - Supply voltage.
The device supports data rates up to 10 Mbps and operates with a single 3.3V power supply. It's used in applications requiring noise immunity and long-distance communication.

Manufacturer

The MAX3485ESA+ is manufactured by Maxim Integrated, which is now part of Analog Devices, Inc. Maxim Integrated is known for designing, manufacturing, and selling analog and mixed-signal integrated circuits. The company specializes in creating solutions that address complex system-level problems in various fields, including industrial, automotive, communications, consumer, and computing markets. As a leader in analog technology, Maxim Integrated's products include a wide range of power management ICs, sensors, interface circuits, and other essential components for electronic devices.

Application

The MAX3485ESA+ is a low-power, high-speed transceiver designed for RS-485 and RS-422 communication applications. Key application areas include industrial automation systems, building automation, process control networks, and any environment requiring robust, long-distance data communication. It is also used in security systems, remote meter reading, and data acquisition systems. The device is suitable for applications with constrained power budgets, as it operates on a low supply current. Its ESD protection and fail-safe features make it ideal for reliable communication in harsh environments.

Package

The MAX3485ESA+ is a transceiver IC packaged in an 8-pin SOIC (Small Outline Integrated Circuit) package. It is designed for RS-485/RS-422 communication and operates with low power in half-duplex mode.

Frequently Asked Questions


Q: What is the maximum data rate supported by the MAX3485ESA+?
A: It supports a data rate up to 10Mbps, suitable for high-speed RS-485/RS-422 communications.


Q: Can this transceiver operate with a 3.3V supply only?
A: Yes, it is designed for a supply voltage range of 3V to 3.6V, ideal for 3.3V systems.


Q: Is the MAX3485ESA+ a half-duplex or full-duplex device?
A: It operates in half-duplex mode, with one driver and one receiver sharing transmission lines.


Q: What is the receiver hysteresis value for noise immunity?
A: The receiver has a hysteresis of 50 mV, providing reliable noise rejection in noisy environments.


Q: What is the operating temperature range of this component?
A: It operates from -40°C to 85°C, suitable for industrial temperature applications.


Q: Which package type does the MAX3485ESA+ come in?
A: It is available in an 8-pin SOIC surface-mount package (8-SOIC, 3.90mm width).


Q: Is this device compatible with RS-485 and RS-422 protocols?
A: Yes, it supports both RS-485 and RS-422 communication standards.


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