Thông số kỹ thuật
| thuộc tính | Giá trị |
| Package | Tube |
| ProductStatus | Obsolete |
| Type | Transceiver |
| Protocol | RS422, RS485 |
| NumberofDrivers/Receivers | 1/1 |
| Duplex | Half |
| ReceiverHysteresis | 70 mV |
| DataRate | 250kbps |
| Voltage-Supply | 4.75V ~ 5.25V |
| OperatingTemperature | 0°C ~ 70°C |
| MountingType | Surface Mount |
| Package/Case | 8-SOIC (0.154, 3.90mm Width) |
Tổng quan
Description
The MAX487ECSA is a low-power, high-speed differential transceiver commonly used in RS-485 and RS-422 communications. It facilitates reliable data transmission over long distances and in electrically noisy environments. This device supports data rates of up to 250 kbps and is designed to operate with a single 5V supply.
Key features include a low quiescent current, typically 120 µA, and the ability to operate over a wide temperature range, making it suitable for various industrial applications. The MAX487ECSA is equipped with short-circuit protection, thermal shutdown, and is ESD-protected to ±15kV, enhancing its robustness in demanding conditions.
This transceiver is capable of handling up to 32 transceivers on the same bus, providing flexibility for complex network designs. The MAX487ECSA comes in an 8-pin SOIC package and is pin-compatible with the industry-standard 75176 transceiver.
The device's reduced power consumption and enhanced protection features make it ideal for use in applications like industrial automation, HVAC systems, and remote sensors.
Key features include a low quiescent current, typically 120 µA, and the ability to operate over a wide temperature range, making it suitable for various industrial applications. The MAX487ECSA is equipped with short-circuit protection, thermal shutdown, and is ESD-protected to ±15kV, enhancing its robustness in demanding conditions.
This transceiver is capable of handling up to 32 transceivers on the same bus, providing flexibility for complex network designs. The MAX487ECSA comes in an 8-pin SOIC package and is pin-compatible with the industry-standard 75176 transceiver.
The device's reduced power consumption and enhanced protection features make it ideal for use in applications like industrial automation, HVAC systems, and remote sensors.
Equivalent
The MAX487ECSA is a low-power transceiver for RS-485/RS-422 communication. Equivalent products include:
1. Texas Instruments SN75176A
2. Texas Instruments THVD1450
3. Analog Devices ADM485
4. STMicroelectronics ST485
5. Microchip Technology MCP485
These alternatives offer similar functionality for half-duplex communication in industrial and commercial applications. Always verify pin configurations and electrical characteristics to ensure compatibility.
1. Texas Instruments SN75176A
2. Texas Instruments THVD1450
3. Analog Devices ADM485
4. STMicroelectronics ST485
5. Microchip Technology MCP485
These alternatives offer similar functionality for half-duplex communication in industrial and commercial applications. Always verify pin configurations and electrical characteristics to ensure compatibility.
Features
The MAX487ECSA is a low-power transceiver specifically designed for RS-485 and RS-422 communication standards. It features a half-duplex configuration that allows for communication over a single twisted pair, supporting data rates up to 250 kbps. The device operates with a wide supply voltage range from 4.75V to 5.25V. It is known for its low power consumption, drawing only 120 µA during operation, making it suitable for battery-powered and energy-efficient applications.
The MAX487ECSA has a fail-safe feature that ensures the output remains in a known state when the input is floating, shorted, or terminated but undriven. It offers enhanced ESD protection up to ±15 kV using the Human Body Model, ensuring robustness in harsh environments. The transceiver includes thermal shutdown protection and short-circuit protection to guard against overcurrent conditions. With its compact SOIC-8 package, the MAX487ECSA is ideal for applications in industrial automation, building automation, and other systems requiring reliable data communication over long distances.
The MAX487ECSA has a fail-safe feature that ensures the output remains in a known state when the input is floating, shorted, or terminated but undriven. It offers enhanced ESD protection up to ±15 kV using the Human Body Model, ensuring robustness in harsh environments. The transceiver includes thermal shutdown protection and short-circuit protection to guard against overcurrent conditions. With its compact SOIC-8 package, the MAX487ECSA is ideal for applications in industrial automation, building automation, and other systems requiring reliable data communication over long distances.
Pinout
The MAX487ECSA is an 8-pin SOIC (Small Outline Integrated Circuit) package. It is a low-power transceiver designed for RS-485 and RS-422 communication protocols. Below is a brief description of its pins and functions:
1. RO (Pin 1): Receiver Output. This pin delivers the received data to the microcontroller or the data handling circuitry.
2. RE̅ (Pin 2): Receiver Output Enable. An active-low input that enables the receiver output when low.
3. DE (Pin 3): Driver Output Enable. An active-high input that enables the driver outputs when high.
4. DI (Pin 4): Driver Input. The data input for the driver.
5. GND (Pin 5): Ground. The reference point for the device.
6. A (Pin 6): Non-inverting Driver Output/Receiver Input. Connects to the data bus or transmission line.
7. B (Pin 7): Inverting Driver Output/Receiver Input. Connects to the data bus or transmission line.
8. VCC (Pin 8): Supply Voltage. Provides the power to the IC.
The MAX487ECSA is optimized for low-power operation and is suitable for half-duplex communication over long distances.
1. RO (Pin 1): Receiver Output. This pin delivers the received data to the microcontroller or the data handling circuitry.
2. RE̅ (Pin 2): Receiver Output Enable. An active-low input that enables the receiver output when low.
3. DE (Pin 3): Driver Output Enable. An active-high input that enables the driver outputs when high.
4. DI (Pin 4): Driver Input. The data input for the driver.
5. GND (Pin 5): Ground. The reference point for the device.
6. A (Pin 6): Non-inverting Driver Output/Receiver Input. Connects to the data bus or transmission line.
7. B (Pin 7): Inverting Driver Output/Receiver Input. Connects to the data bus or transmission line.
8. VCC (Pin 8): Supply Voltage. Provides the power to the IC.
The MAX487ECSA is optimized for low-power operation and is suitable for half-duplex communication over long distances.
Manufacturer
The MAX487ECSA is manufactured by Maxim Integrated, which is now part of Analog Devices, Inc. Maxim Integrated was an American company that specialized in the design and manufacture of analog and mixed-signal integrated circuits, including microcontrollers, sensors, and interfaces. The company's products are used in a wide range of applications, such as consumer electronics, automotive, industrial, and communications. Maxim Integrated was known for its innovation in power management, battery management, and interface solutions before it was acquired by Analog Devices in 2021. Analog Devices is a global leader in the design and manufacturing of analog, mixed-signal, and digital signal processing (DSP) integrated circuits used in electronic equipment. The company serves a diverse range of industries including automotive, communications, healthcare, industrial, and consumer electronics.
Application
The MAX487ECSA is a low-power transceiver for RS-485 and RS-422 communication systems. It is commonly used in industrial automation, process control, and building automation systems due to its ability to support long-distance data transmission and operate in noisy environments. The transceiver is suitable for Multi-Drop communication networks, where multiple nodes communicate over the same bus. It's also used in HVAC systems, security systems, and any application requiring robust serial communication. Its low power consumption and ability to operate over a wide voltage range make it ideal for battery-powered and portable devices.
Package
The MAX487ECSA is a low-power transceiver for RS-485 and RS-422 communication. It is housed in an 8-pin SOIC (Small Outline Integrated Circuit) package. This package type is suitable for surface-mount applications, providing a compact footprint ideal for PCB space-constrained designs.
