사양
| 속성 | 가치 |
| Package | Tape & Reel (TR),Cut Tape (CT) |
| ProductStatus | Active |
| Type | Transceiver |
| Protocol | RS422, RS485 |
| NumberofDrivers/Receivers | 1/1 |
| Duplex | Full |
| ReceiverHysteresis | 70 mV |
| DataRate | 2.5Mbps |
| Voltage-Supply | 4.75V ~ 5.25V |
| OperatingTemperature | -40°C ~ 85°C |
| MountingType | Surface Mount |
| Package/Case | 14-SOIC (0.154, 3.90mm Width) |
개요
Description
The MAX491ESD+T is a low-power, differential line transceiver designed for RS-485 and RS-422 communication protocols. It is manufactured by Maxim Integrated and is part of a family of products aimed at robust data transmission over long distances and in noisy environments. The device features a half-duplex communication capability, allowing for bidirectional data transmission over a single twisted pair of wires.
Key features include a wide supply voltage range from 4.75V to 5.25V, low power consumption with a shutdown mode, and a fail-safe receiver that guarantees a logic-high output when the input is open, shorted, or terminated but undriven. It offers ESD protection up to ±15kV and is capable of driving loads up to 60mA. The device is optimized for data rates up to 2.5Mbps and is suitable for use in industrial and commercial applications, such as networking equipment, industrial control, and building automation systems. The "T" in its part number indicates that it is available in a tape and reel packaging for automated assembly processes.
Key features include a wide supply voltage range from 4.75V to 5.25V, low power consumption with a shutdown mode, and a fail-safe receiver that guarantees a logic-high output when the input is open, shorted, or terminated but undriven. It offers ESD protection up to ±15kV and is capable of driving loads up to 60mA. The device is optimized for data rates up to 2.5Mbps and is suitable for use in industrial and commercial applications, such as networking equipment, industrial control, and building automation systems. The "T" in its part number indicates that it is available in a tape and reel packaging for automated assembly processes.
Equivalent
The MAX491ESD+T is a low-power, RS-485/RS-422 transceiver. Equivalent products include:
1. SN75176A by Texas Instruments
2. ADM485 by Analog Devices
3. LTC485 by Linear Technology (now part of Analog Devices)
4. SP485E by MaxLinear (formerly Sipex)
5. AM26C31 by Texas Instruments
These devices typically offer similar functionalities, such as differential signaling, low power consumption, and compatibility with RS-485/RS-422 communication standards. Always check specific datasheets for compatibility and application requirements.
1. SN75176A by Texas Instruments
2. ADM485 by Analog Devices
3. LTC485 by Linear Technology (now part of Analog Devices)
4. SP485E by MaxLinear (formerly Sipex)
5. AM26C31 by Texas Instruments
These devices typically offer similar functionalities, such as differential signaling, low power consumption, and compatibility with RS-485/RS-422 communication standards. Always check specific datasheets for compatibility and application requirements.
Features
The MAX491ESD+T is a low-power, RS-485/RS-422 transceiver designed for multipoint transmission on long bus lines in noisy environments. Key features include:
1. Low Power Consumption: It operates with a low supply current, making it energy efficient.
2. Wide Supply Voltage Range: The device functions over a broad voltage range, enhancing versatility.
3. High Data Rate: Capable of supporting data rates up to 2.5Mbps.
4. Short-Circuit Protection: Equipped with protection against short circuits, enhancing reliability.
5. Thermal Shutdown: It includes thermal shutdown capabilities to prevent damage from overheating.
6. ESD Protection: The transceiver provides strong electrostatic discharge (ESD) protection, improving durability.
7. Full-Duplex Communication: Supports full-duplex communication, allowing simultaneous two-way data transmission.
8. Slew-Rate Limiting: Features slew-rate limiting to minimize electromagnetic interference.
9. Fail-Safe Receiver: The receiver is designed to ensure a logical high output when inputs are open, shorted, or terminated but undriven.
These features make the MAX491ESD+T suitable for industrial and commercial applications requiring robust, high-speed data communication over long distances.
1. Low Power Consumption: It operates with a low supply current, making it energy efficient.
2. Wide Supply Voltage Range: The device functions over a broad voltage range, enhancing versatility.
3. High Data Rate: Capable of supporting data rates up to 2.5Mbps.
4. Short-Circuit Protection: Equipped with protection against short circuits, enhancing reliability.
5. Thermal Shutdown: It includes thermal shutdown capabilities to prevent damage from overheating.
6. ESD Protection: The transceiver provides strong electrostatic discharge (ESD) protection, improving durability.
7. Full-Duplex Communication: Supports full-duplex communication, allowing simultaneous two-way data transmission.
8. Slew-Rate Limiting: Features slew-rate limiting to minimize electromagnetic interference.
9. Fail-Safe Receiver: The receiver is designed to ensure a logical high output when inputs are open, shorted, or terminated but undriven.
These features make the MAX491ESD+T suitable for industrial and commercial applications requiring robust, high-speed data communication over long distances.
Pinout
The MAX491ESD+T is a differential line transceiver designed for RS-485 and RS-422 communication standards. It is manufactured by Maxim Integrated. This device features a 14-pin SOIC package. The main functions of the MAX491 include transmitting and receiving differential signals over twisted-pair cables. It is designed to operate with a single 5V supply and features a low power consumption mode.
The MAX491ESD+T is capable of driving and receiving across long cables and is suited for multipoint applications on noisy networks. Key features include full-duplex communication, high ESD protection, short-circuit protection, thermal shutdown, and fail-safe receiver inputs, which ensure that the device operates reliably in a variety of environments.
The pin configuration includes pins for driver output (A, B), receiver input (A, B), driver enable, receiver enable, and power supply (VCC, GND). Specific pin functions are detailed in the datasheet, which provides information on the operation and specification of each pin.
The MAX491ESD+T is capable of driving and receiving across long cables and is suited for multipoint applications on noisy networks. Key features include full-duplex communication, high ESD protection, short-circuit protection, thermal shutdown, and fail-safe receiver inputs, which ensure that the device operates reliably in a variety of environments.
The pin configuration includes pins for driver output (A, B), receiver input (A, B), driver enable, receiver enable, and power supply (VCC, GND). Specific pin functions are detailed in the datasheet, which provides information on the operation and specification of each pin.
Manufacturer
The MAX491ESD+T is manufactured by Maxim Integrated, which is a company that specializes in designing, developing, and manufacturing analog and mixed-signal integrated circuits. Maxim Integrated is known for providing a wide range of semiconductor solutions for industries such as consumer electronics, automotive, communications, and industrial applications. The company focuses on creating high-performance products that address the complex needs of modern electronics, including power management, interface, and signal processing solutions. In 2021, Maxim Integrated was acquired by Analog Devices, Inc., further expanding its capabilities and market reach.
Application
The MAX491ESD+T is a low-power, differential, RS-485/RS-422 transceiver. It is commonly used in applications that require reliable data communication over long distances in electrically noisy environments. Typical application areas include industrial automation systems, building automation, HVAC systems, security systems, and process control networks. It is also used in data acquisition systems, telecommunications, and any scenario that requires robust multi-drop communication networks. The transceiver's ability to support high data rates and its fail-safe, current-limiting, and thermal shutdown features make it suitable for applications demanding reliable and efficient serial data communication.
Package
The MAX491ESD+T is an integrated circuit in an 8-Pin SOIC (Small Outline Integrated Circuit) package. This package type is surface-mount, making it suitable for compact and efficient circuit board designs.
