MAX485CPA

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MAX485CPA

IC TRANSCEIVER HALF 1/1 8PDIP

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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 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

Tổng quan

Description

The MAX485CPA is a low-power, half-duplex RS-485/RS-422 transceiver designed for long-distance data communication. It enables reliable transmission over twisted-pair cables, making it ideal for industrial applications, network communications, and automation systems. The device operates from a single +5V power supply and features a maximum data rate of 2.5 Mbps, supporting distances up to 4000 feet (1200 meters) at lower data rates.
Key features include:
- Low power consumption: It draws only 120 µA in standby mode.
- Wide operating temperature range: -40°C to +85°C.
- Integrated fail-safe features: Ensures a logic high output in the absence of a valid input signal.
- Small package: Available in an 8-pin DIP or SOIC package for space-efficient designs.
The MAX485CPA is commonly used in applications requiring robust communication in electrically noisy environments, such as sensor networks, automation systems, and remote monitoring solutions.

Features

The MAX485CPA is a low-power differential transceiver designed for RS-485 and RS-422 communication standards. Key features include:
1. Low Power Consumption: Operates with a supply voltage of 5V and has a typical supply current of only 120 µA.
2. Data Rate: Supports data transmission rates up to 2.5 Mbps.
3. Differential Signaling: Provides improved noise immunity and allows for long-distance communication (up to 4000 feet).
4. Multi-Point Capability: Can connect up to 32 transceivers on a single bus.
5. Driver/Receiver: Includes one driver and one receiver, enabling full-duplex communication.
6. Fail-Safe Design: Features built-in failsafe mechanisms that ensure the receiver is not left floating when idle.
7. Wide Temperature Range: Operates efficiently in a temperature range of -40°C to +85°C.
The MAX485CPA is commonly used in industrial automation, remote sensor networks, and various data communication applications.

Package

The MAX485CPA is available in an 8-pin DIP (Dual In-line Package) form factor. This package type is commonly used for integrated circuits, allowing for easy mounting on printed circuit boards.

Pinout

The MAX485CPA is an integrated circuit used for RS-485 and RS-422 communication. It has a total of 8 pins. Here’s a brief overview of the pin functions:
1. RO (Receiver Output): Outputs the received data.
2. RE (Receiver Enable): Active-low pin to enable the receiver.
3. DE (Driver Enable): Active-high pin to enable the driver.
4. DI (Driver Input): Inputs the data to be transmitted.
5. A (Non-inverting Signal Input/Output): Connects to the non-inverting input/output of the RS-485 network.
6. B (Inverting Signal Input/Output): Connects to the inverting input/output of the RS-485 network.
7. GND (Ground): Common ground for the device.
8. VCC (Supply Voltage): Power supply input, typically +5V.
The MAX485CPA allows for half-duplex communication and is widely used in industrial and automated systems for reliable data transmission over long distances.

Manufacturer

The MAX485CPA is manufactured by Maxim Integrated, which is now part of Analog Devices, Inc. Maxim Integrated specializes in designing and manufacturing analog and mixed-signal semiconductor products. The company is known for its innovative solutions in various applications, including communications, automotive, industrial, and consumer electronics. Their product portfolio includes amplifiers, data converters, voltage regulators, and interface devices, among others. With a focus on high-performance and low-power designs, Maxim Integrated serves a diverse range of industries, delivering components that enhance the functionality and efficiency of electronic systems.

Application

The MAX485CPA is commonly used in RS-485 communication applications, enabling long-distance data transmission in industrial automation, remote sensor networks, and building automation systems. Its low power consumption and ability to support multiple nodes make it suitable for modbus protocols, CAN bus systems, and other multi-drop configurations in environments like factory automation, process control, and telecommunications.

Equivalent

Equivalent products to the MAX485CPA include the SN75176, SP485, and LT1785. These chips offer similar functionalities for RS-485 communication, such as differential signaling and low-power operation. Always check the datasheets for specific electrical characteristics and compatibility.

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