MAX3485ESA

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MAX3485ESA

IC TRANSCEIVER HALF 1/1 8SOIC

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  • Ông. Phần #MAX3485ESA
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Bảo hành 365 ngày

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Thông số kỹ thuật

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

Tổng quan

Description

The MAX3485ESA is a low-power, half-duplex, RS-485/RS-422 transceiver designed for robust data communication over long distances in noisy environments. It operates in a single 5V supply and features a data rate of up to 2.5 Mbps. The device is capable of driving up to 32 transceivers on a single bus, making it suitable for multi-point applications.
The MAX3485ESA includes integrated fail-safe features to ensure reliable operation under various conditions, such as open-circuit or shorted lines. It offers a wide common-mode input voltage range, allowing it to work effectively in industrial environments. The device also has low quiescent current, making it ideal for battery-powered applications.
Key specifications include a maximum operating temperature range of -40°C to +85°C, and it is available in an 8-pin SOIC package. Overall, the MAX3485ESA is a versatile choice for applications like industrial automation, data acquisition systems, and remote sensor networks.

Features

The MAX3485ESA is a low-power, half-duplex RS-485/RS-422 transceiver designed for high-speed data transmission over long distances. Key features include:
1. Data Rate: Supports data rates up to 2.5 Mbps.
2. Operating Voltage: Functions with a single 5V supply.
3. Low Power Consumption: Consumes only 120 µA in low-power shutdown mode.
4. Driver and Receiver: Combines a driver and receiver, allowing for half-duplex communication.
5. Wide Temperature Range: Operates from -40°C to +85°C, suitable for industrial applications.
6. Fail-Safe Design: Features built-in fail-safe mechanisms for open-circuit and short-circuit conditions.
7. Bus Passive Mode: Allows for multiple devices on the bus without interference.
8. Low Output Voltage Swing: Provides a low differential output voltage swing of 1.5V.
9. Pin Compatibility: Compatible with other RS-485 devices ensuring easy integration.
These features make the MAX3485ESA ideal for applications in industrial automation, data acquisition systems, and multi-drop communication networks.

Package

The MAX3485ESA is packaged in an 8-pin SOIC (Small Outline Integrated Circuit) form factor. This surface-mount package is designed for compact applications and facilitates efficient thermal and electrical performance.

Pinout

The MAX3485ESA is an RS-485/RS-422 transceiver with a pin count of 8. It is designed for half-duplex communication in multipoint applications. The functions of the pins are as follows:
1. RO (Receiver Output) - Outputs the received data.
2. RE (Receiver Enable) - Active low; enables the receiver when low.
3. DE (Driver Enable) - Active high; enables the driver when high.
4. DI (Driver Input) - Receives data for transmission.
5. A (Non-inverting Differential Output) - Positive terminal of the differential output.
6. B (Inverting Differential Output) - Negative terminal of the differential output.
7. VCC - Supply voltage (typically +5V).
8. GND - Ground reference.
The device supports data rates up to 2.5 Mbps and is commonly used in industrial automation, telecommunications, and networking applications.

Manufacturer

The MAX3485ESA is manufactured by Maxim Integrated, which is now part of Analog Devices, Inc. Maxim Integrated was well-known for designing and manufacturing a wide range of analog and mixed-signal integrated circuits, including data converters, amplifiers, and communication interfaces. The company focused on innovative solutions for various applications in industries such as automotive, communications, consumer electronics, and industrial automation. Analog Devices, which acquired Maxim Integrated in 2021, continues to offer and develop products that enhance performance and efficiency in electronic systems.

Application

The MAX3485ESA is a low-power, half-duplex RS-485/RS-422 transceiver, commonly used in industrial automation, data acquisition systems, and telecommunications. Its applications include long-distance data communication, networked systems, and remote sensor networks, enabling reliable communication in noisy environments. It is suitable for connecting multiple devices in a bus topology, making it ideal for building automation, motor control, and process control systems.

Equivalent

Equivalent products to the MAX3485ESA chip include the SN65HVD3085, LT1785, and ADM2483. These chips are also RS-485 transceivers and share similar specifications, such as low power consumption and support for multi-point communication. Always verify specific electrical characteristics and package compatibility before substitution.

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