Thông số kỹ thuật
| thuộc tính | Giá trị |
| Package | Tape & Reel (TR),Cut Tape (CT) |
| ProductStatus | Active |
| Type | Driver |
| Protocol | RS422, RS485 |
| NumberofDrivers/Receivers | 2/0 |
| Voltage-Supply | 4.75V ~ 5.25V |
| OperatingTemperature | 0°C ~ 70°C |
| MountingType | Surface Mount |
| Package/Case | 8-SOIC (0.154, 3.90mm Width) |
| Duplex | Half |
| ReceiverHysteresis | 50 mV |
| DataRate | 250kbps |
| Series | Automotive, AEC-Q100 |
Tổng quan
Description
The MAX3490EESA+ is a low-power, high-speed RS-485/RS-422 transceiver designed for communication over long distances and in electrically noisy environments. It is part of the MAX3490E series by Maxim Integrated, now part of Analog Devices. This device is optimized for enhanced ESD (Electrostatic Discharge) protection up to ±15kV, ensuring robust performance in industrial applications.
Key features include a low 1µA supply current in shutdown mode, a data rate of up to 12Mbps, and a wide common-mode voltage range of -7V to +12V, which enhances noise immunity. The MAX3490EESA+ operates from a single 5V supply and provides fail-safe, short-circuit, and thermal shutdown protection. Its compact SOIC-8 package makes it suitable for space-constrained applications.
This transceiver is ideal for use in industrial automation, HVAC systems, building automation, and any application requiring reliable data transmission over twisted-pair cables. Its high-speed operation and low power consumption make it a versatile choice for modern communication systems.
Key features include a low 1µA supply current in shutdown mode, a data rate of up to 12Mbps, and a wide common-mode voltage range of -7V to +12V, which enhances noise immunity. The MAX3490EESA+ operates from a single 5V supply and provides fail-safe, short-circuit, and thermal shutdown protection. Its compact SOIC-8 package makes it suitable for space-constrained applications.
This transceiver is ideal for use in industrial automation, HVAC systems, building automation, and any application requiring reliable data transmission over twisted-pair cables. Its high-speed operation and low power consumption make it a versatile choice for modern communication systems.
Equivalent
The MAX3490EESA is a RS-485/RS-422 transceiver. Equivalent products include:
1. Texas Instruments SN75176
2. Texas Instruments MAX485
3. Analog Devices ADM485
4. Maxim Integrated MAX485CSA+
5. STMicroelectronics ST3485EB
These chips provide similar functionality for differential communication over twisted pair cables, supporting half-duplex data transmission with similar voltage levels and data rates. Always verify the exact specifications and pin compatibility for your specific application.
1. Texas Instruments SN75176
2. Texas Instruments MAX485
3. Analog Devices ADM485
4. Maxim Integrated MAX485CSA+
5. STMicroelectronics ST3485EB
These chips provide similar functionality for differential communication over twisted pair cables, supporting half-duplex data transmission with similar voltage levels and data rates. Always verify the exact specifications and pin compatibility for your specific application.
Features
The MAX3490EESA+ is a low-power RS-485/RS-422 transceiver designed for communication in noisy environments. It operates at data rates up to 12 Mbps, making it suitable for high-speed data exchange. It features a wide supply voltage range from 4.75V to 5.25V. The device includes a driver and a receiver, both of which can be independently enabled or disabled, allowing for flexible configurations, including full-duplex and half-duplex communication.
A key feature of the MAX3490EESA+ is its low power consumption, with a typical supply current of just 2.5 mA and a shutdown current under 1 µA. It has a fail-safe receiver input, ensuring a known output state when the input is open, shorted, or terminated but undriven, enhancing the reliability of data transmission.
The device is robust, with a ±8 kV ESD protection on the bus pins, ensuring durability in harsh industrial environments. Its compact 8-pin SOIC package allows for easy integration into various applications.
A key feature of the MAX3490EESA+ is its low power consumption, with a typical supply current of just 2.5 mA and a shutdown current under 1 µA. It has a fail-safe receiver input, ensuring a known output state when the input is open, shorted, or terminated but undriven, enhancing the reliability of data transmission.
The device is robust, with a ±8 kV ESD protection on the bus pins, ensuring durability in harsh industrial environments. Its compact 8-pin SOIC package allows for easy integration into various applications.
Pinout
The MAX3490EESA+ is a low-power RS-485/RS-422 transceiver. It is typically used for serial communication in industrial applications. The device comes in an 8-pin SOIC (Small Outline Integrated Circuit) package. Here is a brief overview of the pin functions:
1. RO (Pin 1): Receiver Output. Outputs the received data.
2. RE̅ (Pin 2): Receiver Enable. Active low input to enable the receiver.
3. DE (Pin 3): Driver Enable. Active high input to enable the driver.
4. DI (Pin 4): Driver Input. Inputs the data to be transmitted.
5. GND (Pin 5): Ground. Reference point for all signals.
6. A (Pin 6): Non-inverting Driver Output/Receiver Input.
7. B (Pin 7): Inverting Driver Output/Receiver Input.
8. VCC (Pin 8): Supply Voltage. Powers the device.
The MAX3490EESA+ is designed for half-duplex communication and features low power consumption, making it suitable for battery-powered applications.
1. RO (Pin 1): Receiver Output. Outputs the received data.
2. RE̅ (Pin 2): Receiver Enable. Active low input to enable the receiver.
3. DE (Pin 3): Driver Enable. Active high input to enable the driver.
4. DI (Pin 4): Driver Input. Inputs the data to be transmitted.
5. GND (Pin 5): Ground. Reference point for all signals.
6. A (Pin 6): Non-inverting Driver Output/Receiver Input.
7. B (Pin 7): Inverting Driver Output/Receiver Input.
8. VCC (Pin 8): Supply Voltage. Powers the device.
The MAX3490EESA+ is designed for half-duplex communication and features low power consumption, making it suitable for battery-powered applications.
Manufacturer
The MAX3490EESA+ 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. They focus on creating high-performance semiconductor products for a variety of applications, including industrial, communications, automotive, and consumer markets. Analog Devices, which acquired Maxim Integrated in 2021, is a global leader in the design and manufacturing of analog, mixed-signal, and digital signal processing (DSP) integrated circuits used in electronic equipment.
Application
The MAX3490EESA+ is a low-power RS-485/RS-422 transceiver commonly used in industrial and commercial applications. Its primary application areas include:
1. Industrial Automation: Facilitates reliable communication in factory floor environments.
2. Building Automation: Supports systems like HVAC and security through robust data transfer.
3. Process Control: Ensures accurate data communication in process monitoring and control systems.
4. Energy Management: Used in smart grid and meter reading systems for data exchange.
5. Telecommunications: Supports data transmission in network infrastructure.
Its robust design, featuring ±15kV ESD protection, makes it ideal for environments susceptible to electrical interference.
1. Industrial Automation: Facilitates reliable communication in factory floor environments.
2. Building Automation: Supports systems like HVAC and security through robust data transfer.
3. Process Control: Ensures accurate data communication in process monitoring and control systems.
4. Energy Management: Used in smart grid and meter reading systems for data exchange.
5. Telecommunications: Supports data transmission in network infrastructure.
Its robust design, featuring ±15kV ESD protection, makes it ideal for environments susceptible to electrical interference.
Package
The MAX3490EESA+ is a type of electronic package known as an 8-pin SOIC (Small Outline Integrated Circuit). This package is designed for surface mounting on a printed circuit board (PCB).
