仕様
| 属性 | 値 |
| Package | Tape & Reel (TR),Cut Tape (CT) |
| ProductStatus | Active |
| Type | Transceiver |
| Protocol | RS422, RS485 |
| NumberofDrivers/Receivers | 1/1 |
| Duplex | Half |
| ReceiverHysteresis | 70 mV |
| DataRate | 2.5Mbps |
| Voltage-Supply | 4.75V ~ 5.25V |
| OperatingTemperature | -40°C ~ 85°C |
| MountingType | Surface Mount |
| Package/Case | 8-SOIC (0.154, 3.90mm Width) |
概要
Description
The MAX485ESA+T is a low-power transceiver for RS-485 and RS-422 communication protocols, commonly used in serial data communication systems. It is a product from Maxim Integrated, designed to facilitate communication over long distances in electrically noisy environments. The device operates with a supply voltage range of 4.75V to 5.25V and supports data rates of up to 2.5 Mbps.
Key features include:
1. Low Power Consumption: It features a low quiescent current and a shutdown mode that reduces power consumption to less than 1 µA.
2. Failsafe Protection: The device is equipped with failsafe receivers, ensuring reliable operation by guaranteeing a logic-high output when inputs are open, shorted, or terminated but undriven.
3. Wide Common-Mode Range: It supports a wide common-mode voltage range, enhancing its functionality in industrial applications.
4. ESD Protection: The transceiver is designed with enhanced electrostatic discharge (ESD) protection up to ±15kV, safeguarding the device against static discharge events.
The MAX485ESA+T is suitable for applications in networked sensor systems, industrial automation, and remote data acquisition.
Key features include:
1. Low Power Consumption: It features a low quiescent current and a shutdown mode that reduces power consumption to less than 1 µA.
2. Failsafe Protection: The device is equipped with failsafe receivers, ensuring reliable operation by guaranteeing a logic-high output when inputs are open, shorted, or terminated but undriven.
3. Wide Common-Mode Range: It supports a wide common-mode voltage range, enhancing its functionality in industrial applications.
4. ESD Protection: The transceiver is designed with enhanced electrostatic discharge (ESD) protection up to ±15kV, safeguarding the device against static discharge events.
The MAX485ESA+T is suitable for applications in networked sensor systems, industrial automation, and remote data acquisition.
Equivalent
The MAX485ESA+T is a low-power RS-485/RS-422 transceiver. Equivalent products include:
1. Texas Instruments SN75176BP
2. Texas Instruments SN65HVD72D
3. ADM485 by Analog Devices
4. LTC1480 by Analog Devices (formerly Linear Technology)
5. AM26C31 by Texas Instruments
These alternatives offer similar functionality in terms of differential data transmission and compatibility with RS-485/RS-422 communication standards. However, ensure to check specific electrical characteristics and package types to confirm compatibility with your application.
1. Texas Instruments SN75176BP
2. Texas Instruments SN65HVD72D
3. ADM485 by Analog Devices
4. LTC1480 by Analog Devices (formerly Linear Technology)
5. AM26C31 by Texas Instruments
These alternatives offer similar functionality in terms of differential data transmission and compatibility with RS-485/RS-422 communication standards. However, ensure to check specific electrical characteristics and package types to confirm compatibility with your application.
Features
The MAX485ESA+T is a low-power transceiver for RS-485 and RS-422 communication, designed to operate with a single 5V power supply. It features a differential driver and a differential receiver, making it suitable for half-duplex data communication. The transceiver offers a low quiescent current, typically around 300 µA, which makes it ideal for battery-powered and energy-efficient applications. One of its key features is the ability to handle data rates up to 2.5 Mbps.
The MAX485ESA+T is equipped with a fail-safe receiver that ensures a known output state when the bus is idle or open. It has a wide common-mode voltage range and provides enhanced electrostatic discharge (ESD) protection. The device is designed to operate efficiently over a temperature range of -40°C to +85°C, making it suitable for industrial applications. It also supports up to 32 transceivers on the bus, facilitating network expansion. The small, 8-pin SOIC package allows for compact designs.
The MAX485ESA+T is equipped with a fail-safe receiver that ensures a known output state when the bus is idle or open. It has a wide common-mode voltage range and provides enhanced electrostatic discharge (ESD) protection. The device is designed to operate efficiently over a temperature range of -40°C to +85°C, making it suitable for industrial applications. It also supports up to 32 transceivers on the bus, facilitating network expansion. The small, 8-pin SOIC package allows for compact designs.
Pinout
The MAX485ESA+T is an RS-485/RS-422 transceiver designed for low-power and high-speed communication. It typically comes in an 8-pin SOIC (Small Outline Integrated Circuit) package. Here’s a brief overview of its pin count and functions:
1. RO (Receiver Output): Provides the output of the differential receiver.
2. RE̅ (Receiver Enable): Active-low input. When low, the receiver is enabled.
3. DE (Driver Enable): Controls the driver. When high, the driver is enabled.
4. DI (Driver Input): Data input for the driver.
5. GND: Ground reference for the device.
6. A (Non-Inverting Driver Output / Receiver Input): Used for data transmission or reception.
7. B (Inverting Driver Output / Receiver Input): Used for data transmission or reception.
8. VCC: Power supply input, typically +5V.
The MAX485ESA+T transceiver is widely used for balanced data transmission over long distances and is well-suited for applications requiring robust communication in noisy environments.
1. RO (Receiver Output): Provides the output of the differential receiver.
2. RE̅ (Receiver Enable): Active-low input. When low, the receiver is enabled.
3. DE (Driver Enable): Controls the driver. When high, the driver is enabled.
4. DI (Driver Input): Data input for the driver.
5. GND: Ground reference for the device.
6. A (Non-Inverting Driver Output / Receiver Input): Used for data transmission or reception.
7. B (Inverting Driver Output / Receiver Input): Used for data transmission or reception.
8. VCC: Power supply input, typically +5V.
The MAX485ESA+T transceiver is widely used for balanced data transmission over long distances and is well-suited for applications requiring robust communication in noisy environments.
Manufacturer
The MAX485ESA+T is manufactured by Analog Devices, Inc. This company specializes in the design and manufacturing of analog, mixed-signal, and digital signal processing integrated circuits used in electronic equipment. Known for its innovation and a wide range of applications, Analog Devices serves industries such as communications, healthcare, automotive, and industrial automation.
Application
The MAX485ESA+T is a low-power transceiver for RS-485 communication used in various applications. It is ideal for:
1. Industrial Automation: Facilitates communication between programmable logic controllers (PLCs) and sensors.
2. HVAC Systems: Enhances data transfer efficiency in building management systems.
3. Networking: Supports long-distance data communication in network devices.
4. Security Systems: Ensures reliable data transmission in surveillance and alarm systems.
5. Energy Management: Used in smart grid applications for metering and monitoring.
6. Telecommunications: Enables robust communication in telecom infrastructure.
Its low power consumption, high-speed data transfer, and the ability to operate in harsh environments make it suitable for these applications.
1. Industrial Automation: Facilitates communication between programmable logic controllers (PLCs) and sensors.
2. HVAC Systems: Enhances data transfer efficiency in building management systems.
3. Networking: Supports long-distance data communication in network devices.
4. Security Systems: Ensures reliable data transmission in surveillance and alarm systems.
5. Energy Management: Used in smart grid applications for metering and monitoring.
6. Telecommunications: Enables robust communication in telecom infrastructure.
Its low power consumption, high-speed data transfer, and the ability to operate in harsh environments make it suitable for these applications.
Package
The MAX485ESA+T is a surface-mount device (SMD) package, specifically an 8-pin SOIC (Small Outline Integrated Circuit) package. The "+T" indicates it is packaged in a tape and reel format for automated assembly processes.
