MAX485CPA

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MAX485CPA

+BOM

IC TRANSCEIVER HALF 1/1 8PDIP

  • ManufacturerAnalog Devices Inc./Maxim Integrated

  • Mfr. Part #MAX485CPA

  • Datasheet MAX485CPA DataSheet

  • In Stock4731

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Specifications

Attribute Value
Part Status Obsolete
Type Transceiver
Protocol RS422, RS485
Number of Drivers / Receivers 1/1
Duplex Half
Receiver Hysteresis 70 mV
Data Rate 2.5Mbps
Voltage - Supply 4.75V ~ 5.25V
Operating Temperature 0°C ~ 70°C
Mounting Type Through Hole
Package / Case 8-DIP (0.300", 7.62mm)
Supplier Device Package 8-PDIP
Base Product Number MAX485

Overview

Description

The MAX485CPA is a low-power differential transceiver designed for RS-485 and RS-422 communication. It enables reliable data transmission over long distances while maintaining high noise immunity. Operating with a supply voltage range of 3.0V to 5.5V, it offers a low quiescent current, making it suitable for battery-operated devices.
The device supports half-duplex communication, allowing bidirectional data transmission on a single pair of wires, which reduces wiring complexity. It features a differential output that improves signal integrity and minimizes electromagnetic interference. The MAX485CPA can achieve data rates up to 2.5 Mbps, making it suitable for various applications, including industrial automation, telecommunications, and remote sensor networks.
Key features include thermal shutdown protection, a wide operating temperature range, and enhanced ESD protection. Its compact 8-pin DIP package simplifies integration into various electronic designs. Overall, the MAX485CPA is a versatile and efficient solution for robust serial communication in noisy environments.

Equivalent

Equivalent products to the MAX485CPA chip include the SN75176, SN75179, and MCP2551. Other alternatives are the LTC2862 and the ISL3170. These chips serve similar functions in RS-485 communication applications, offering comparable performance specifications. Always check data sheets for specific electrical characteristics and compatibility with your application.

Features

The MAX485CPA is a low-power, transceiver for RS-485/RS-422 communication. Key features include:
1. Low Power Consumption: Operates with a supply voltage of 3.0V to 5.5V and consumes only 120 µA in low-power mode.

2. High Data Rate: Supports data rates up to 2.5 Mbps, suitable for fast communication applications.
3. Long Distance Transmission: Capable of transmitting over distances up to 4000 feet (1200 meters), making it ideal for long-distance networking.
4. Differential Signaling: Provides robust noise immunity through differential signaling, enhancing reliability in noisy environments.
5. Half-Duplex Communication: Facilitates two-way communication using a single pair of wires, reducing wiring complexity and cost.
6. Thermal Shutdown: Features thermal shutdown protection to prevent damage under fault conditions.
7. Wide Operating Temperature Range: Rated for operation between -40°C and +85°C, ensuring reliability in various environments.
The MAX485CPA is widely used in industrial control systems, automation, and data acquisition applications.

Pinout

The MAX485CPA is an RS-485/RS-422 transceiver with a total of 8 pins. Here’s a brief overview of its pin configuration and functions:
1. RO (Receiver Output) - Outputs the received data from the RS-485 bus.
2. RE (Receiver Enable) - Active low control input that enables the receiver when low.
3. DE (Driver Enable) - Active high control input that enables the driver when high.
4. DI (Driver Input) - Inputs the data to be transmitted to the RS-485 bus.
5. A (Non-Inverting Input) - Connects to the positive side of the RS-485 bus.
6. B (Inverting Input) - Connects to the negative side of the RS-485 bus.
7. VCC - Power supply pin (typically +5V).
8. GND - Ground pin.
The MAX485CPA is designed for half-duplex communication, allowing for data transmission over long distances while minimizing power consumption.

Manufacturer

The MAX485CPA is manufactured by Maxim Integrated, which is a company known for designing and manufacturing analog and mixed-signal integrated circuits (ICs). Founded in 1983, Maxim Integrated specializes in providing a wide range of semiconductor products for various applications, including communications, automotive, industrial, and consumer electronics.
The MAX485CPA is a low-power transceiver for RS-485 and RS-422 communication, commonly used in data communication applications due to its ability to transmit and receive differential signals over long distances. Maxim Integrated focuses on innovative solutions that enhance performance and reduce power consumption in electronic devices.
In 2021, Maxim Integrated was acquired by Analog Devices, Inc., a leading global company in the semiconductor industry that provides analog, mixed-signal, and digital signal processing (DSP) integrated circuits, along with a wide array of solutions for various technology sectors. Together, they continue to advance technologies that support connectivity, sensing, and data management in modern electronic systems.

Application

The MAX485CPA is a low-power, differential transceiver used primarily for RS-485 and RS-422 communication protocols. Its application areas include industrial automation, data acquisition systems, and long-distance communication in environments with high electrical noise. It is also utilized in building automation, remote sensor networks, and multi-drop networks where multiple devices communicate over a single bus. Additionally, it can be found in automotive applications and for connecting microcontrollers to peripheral devices in various embedded systems. Its ability to support half-duplex communication makes it ideal for applications requiring reliable data transmission over extended distances.

Package

The MAX485CPA is packaged in an 8-pin DIP (Dual In-line Package) configuration. This package type is suitable for through-hole mounting on printed circuit boards.

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