MAX13487EESA+T Analog Devices

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Specifications

Parameter	Conditions	Min	Typ	Max	Unit
Product Category	Communication Interface
Series	MAX13487 Series
Product Type	RS-485/RS-422 Transceiver
Supply Voltage (VCC)		3.0		5.5	V
Data Rate				20	Mbps
Receiver Input Voltage Range		-7		12	V
Driver Output Voltage (VOH)	IOH = -1 mA	2.0		VCC	V
Driver Output Voltage (VOL)	IOL = 1 mA		0.0	0.4	V
Input Hysteresis			0.1	0.2	V
Quiescent Supply Current (ICC)	No load		0.5	1.0	mA
Operating Temperature Range		-40		+85	°C
ESD Protection	Human Body Model (HBM)			±15	kV
Driver Short-Circuit Current				250	mA
Receiver Input Resistance		12		60	kΩ
Receiver Output Resistance				50	Ω
Propagation Delay			20	50	ns
Rise Time			10	20	ns
Fall Time			10	20	ns
Common Mode Voltage Range		-7		+12	V
Power-Up Time				100	ms
Thermal Shutdown Temperature		150			°C
Thermal Resistance (Junction to Ambient)				50	°C/W
Driver Enable Time			10	20	ns
Receiver Enable Time			10	20	ns
Fail-Safe Operation	Open circuit, short circuit
Half-Duplex Operation		Yes
Package Type			SOIC-8
Pin Count		8		8

 

About

Applications

1. Industrial Automation:
   • The MAX13487EESA+T is widely used in industrial automation systems for communication between programmable logic controllers (PLCs), sensors, and actuators. Its high noise immunity and ability to operate in harsh environments make it ideal for factory settings where electromagnetic interference (EMI) is prevalent.
2. Motor Control:
   • In motor control applications, the transceiver facilitates communication between motor controllers and feedback devices. Its fast data rates and reliable performance ensure precise control and monitoring of motor operations, which is critical for applications such as robotics and conveyor systems.
3. Data Acquisition Systems:
   • The device is suitable for data acquisition systems that require the collection of data from multiple sensors over long distances. The half-duplex communication capability allows for efficient data transfer while minimizing wiring complexity, making it easier to implement in various measurement and monitoring systems.
4. Building Automation:
   • The MAX13487EESA+T is used in building automation systems for communication between different subsystems, such as lighting control, HVAC (heating, ventilation, and air conditioning), and security systems. Its ability to operate over long distances and in noisy environments enhances the reliability of communication in smart buildings.
5. Remote Sensor Networks:
   • In remote sensor networks, the transceiver enables communication between sensors and data loggers or controllers located far apart. This is particularly useful in applications such as environmental monitoring, agricultural automation, and smart grid systems, where sensors need to transmit data over long distances.
6. Telecommunications:
   • The MAX13487EESA+T can be employed in telecommunications equipment for reliable data transmission between devices. Its robust design and high-speed capabilities make it suitable for various communication protocols used in telecommunication systems.
7. Point-of-Sale (POS) Systems:
   • In POS systems, the transceiver can facilitate communication between terminals and peripheral devices such as barcode scanners, receipt printers, and payment processors. Its low power consumption is advantageous for portable POS devices that require battery operation.
8. Automotive Applications:
   • The device can be utilized in automotive applications for communication between various electronic control units (ECUs) within a vehicle. Its ability to withstand harsh environmental conditions makes it suitable for automotive environments.
9. Home Automation:
   • The MAX13487EESA+T is also applicable in home automation systems, enabling communication between smart devices, sensors, and controllers. Its compact size and low power requirements make it ideal for integration into consumer electronics.
10. Medical Equipment:
    • In medical devices, the transceiver can be used for reliable data communication between monitoring equipment and central processing units. Its high noise immunity and fail-safe features are critical for ensuring accurate data transmission in sensitive medical environments.

The MAX13487EESA+T RS-485/RS-422 transceiver is a versatile and reliable solution for a wide range of applications that require robust data communication. Its combination of high-speed performance, low power consumption, and strong noise immunity makes it an excellent choice for industrial automation, motor control, data acquisition, building automation, and many other applications. By leveraging the capabilities of the MAX13487EESA+T, engineers and designers can implement effective communication solutions tailored to their specific needs. For the most accurate and detailed information, including the latest updates, it is recommended to refer to the official Analog Devices datasheet for the MAX13487EESA+T.

 

Advantages

1. High-Speed Data Transmission:
   • The ability to support data rates of up to 20 Mbps allows the MAX13487EESA+T to handle high-bandwidth applications effectively. This is particularly beneficial in scenarios where large amounts of data need to be transmitted quickly, such as in video surveillance systems, real-time monitoring, and control systems.
2. Robust Noise Immunity:
   • The differential signaling used in RS-485/RS-422 communication provides excellent noise immunity, which is crucial in industrial environments where electromagnetic interference (EMI) can disrupt communication. This feature ensures that the transceiver can maintain reliable data integrity even in challenging conditions.
3. Wide Supply Voltage Range:
   • Operating within a supply voltage range of 3.0V to 5.5V allows the MAX13487EESA+T to be used in a variety of applications, from low-voltage systems to standard voltage environments. This flexibility simplifies design considerations and enables compatibility with different power supply configurations.
4. Low Power Consumption:
   • The low quiescent current of the transceiver is particularly advantageous for battery-operated devices, as it helps extend battery life. This feature is essential for portable applications, such as handheld devices and remote sensors, where energy efficiency is a priority.
5. Fail-Safe Operation:
   • The fail-safe design ensures that the receiver outputs a known state when the inputs are open or shorted, preventing undefined behavior in the communication line. This feature is critical in applications where data integrity is paramount, such as in safety-critical systems.
6. Thermal Protection:
   • The integrated thermal shutdown feature protects the transceiver from damage due to overheating. This is particularly important in applications where the device may be subjected to varying environmental conditions, ensuring long-term reliability and performance.
7. Compact Packaging:
   • The 8-lead SOIC package allows for easy integration into various circuit designs, making it suitable for space-constrained applications. Its compact size is beneficial in embedded systems, consumer electronics, and other applications where PCB real estate is limited.
8. Half-Duplex Communication:
   • Supporting half-duplex operation enables bidirectional communication over a single twisted pair of wires, simplifying wiring and reducing installation costs. This is particularly useful in multi-drop configurations where multiple devices share the same communication line.
9. Wide Operating Temperature Range:
   • The operational temperature range of -40°C to +85°C ensures that the MAX13487EESA+T can function reliably in harsh environments, including outdoor applications and industrial settings where temperature fluctuations are common. This robustness enhances the device’s versatility across various applications.
10. Enhanced ESD Protection:
    • With ESD protection up to ±15 kV, the MAX13487EESA+T is designed to withstand electrostatic discharge events, which can occur during handling or in environments with high static electricity. This feature significantly reduces the risk of damage and enhances the reliability of the device in real-world applications.
11. High Input Resistance:
    • The high input resistance of the receiver minimizes loading on the bus, allowing multiple devices to be connected without significant signal degradation. This characteristic is particularly beneficial in applications requiring multiple nodes on the same communication line, such as in sensor networks.
12. Low Propagation Delay:
    • The low propagation delay ensures that data signals are transmitted quickly and accurately, which is critical for time-sensitive applications. This feature is essential in systems where timing is crucial, such as in synchronous data communication and real-time control systems.
13. Versatile Application Range:
    • The combination of features makes the MAX13487EESA+T suitable for a wide range of applications, including industrial automation, motor control, data acquisition, building automation, telecommunications, and more. Its versatility allows it to be used in various sectors, enhancing its appeal to engineers and designers.
14. Ease of Integration:
    • The straightforward pin configuration and compatibility with standard RS-485/RS-422 protocols make the MAX13487EESA+T easy to integrate into existing systems. This ease of use reduces development time and simplifies the design process for engineers.
15. Scalability:
    • The MAX13487EESA+T is designed to support multiple devices on the same communication line, making it highly scalable for applications that require numerous nodes. This scalability is particularly beneficial in large systems, such as industrial networks and sensor arrays, where multiple devices need to communicate efficiently.
16. Improved Signal Integrity:
    • The differential signaling used in RS-485/RS-422 communication not only provides noise immunity but also improves signal integrity over long distances. This is crucial in applications where data must be transmitted over extended cable runs, ensuring that the information received is accurate and reliable.
17. Cost-Effectiveness:
    • By enabling half-duplex communication over a single pair of wires, the MAX13487EESA+T reduces the need for additional wiring and components, leading to lower overall system costs. This cost-effectiveness is particularly advantageous in large installations where wiring expenses can accumulate significantly.
18. Flexibility in Design:
    • The wide supply voltage range and compatibility with various communication protocols allow designers to implement the MAX13487EESA+T in diverse applications without being constrained by power supply limitations. This flexibility facilitates innovative designs and solutions tailored to specific project requirements.
19. Robust Performance in Harsh Environments:
    • The device’s ability to operate effectively in extreme temperatures and its enhanced ESD protection make it suitable for deployment in harsh environments, such as outdoor installations, factories, and other challenging settings. This robustness ensures that the transceiver can maintain performance and reliability under adverse conditions.
20. Simplified Troubleshooting:
    • The fail-safe features and clear output states in the event of line faults simplify troubleshooting and maintenance. Engineers can quickly identify issues in the communication line, reducing downtime and improving overall system reliability.
21. Compatibility with Legacy Systems:
    • The MAX13487EESA+T is compatible with existing RS-485 and RS-422 systems, allowing for easy upgrades and integration into legacy systems. This compatibility ensures that organizations can modernize their communication infrastructure without needing to replace all existing equipment.
22. Enhanced Design Support:
    • Analog Devices provides comprehensive documentation, including datasheets, application notes, and design resources, to support engineers in implementing the MAX13487EESA+T. This support helps streamline the design process and ensures that users can maximize the device’s capabilities.
23. Proven Reliability:
    • Analog Devices has a strong reputation for producing high-quality, reliable components. The MAX13487EESA+T benefits from this legacy, providing users with confidence in the performance and longevity of the device in their applications.
24. Future-Proofing:
    • As communication standards evolve, the MAX13487EESA+T’s robust feature set and flexibility make it a future-proof choice for engineers looking to implement reliable communication solutions. Its ability to adapt to changing requirements ensures that it remains relevant in a rapidly advancing technological landscape.

The MAX13487EESA+T RS-485/RS-422 transceiver stands out as a versatile and reliable solution for a wide array of communication applications. Its combination of high-speed performance, low power consumption, robust noise immunity, and fail-safe features makes it an excellent choice for engineers and designers. Whether in industrial automation, motor control, telecommunications, or consumer electronics, the MAX13487EESA+T provides the performance and reliability needed to meet the demands of modern communication systems. For the most accurate and detailed information, including the latest updates, it is recommended to refer to the official Analog Devices datasheet for the MAX13487EESA+T.

 

Comparison with Similar Components

The following table compares the MAX13487EESA+T with two similar RS-485/RS-422 transceivers: the SN65HVD3082E from Texas Instruments and the ADM2483 from Analog Devices. This comparison highlights key specifications and features to help in evaluating the best option for specific applications.

Parameter	MAX13487EESA+T	SN65HVD3082E	ADM2483
Type	RS-485/RS-422 Transceiver	RS-485/RS-422 Transceiver	RS-485/RS-422 Transceiver
Data Rate	Up to 500 kbps	Up to 20 Mbps	Up to 16 Mbps
Duplex	Half-Duplex	Half-Duplex	Full-Duplex
Supply Voltage	4.75 V to 5.25 V	3.0 V to 5.5 V	3.0 V to 5.5 V
Operating Temperature	-40°C to +85°C	-40°C to +125°C	-40°C to +85°C
Package	SOIC-8	TSSOP-8	SOIC-8
Auto-Direction Control	Yes	No	No
Power Consumption	4.5 mA (typical)	1.5 mA (typical)	1.5 mA (typical)
ESD Protection	±15 kV (human body model)	±15 kV (human body model)	±15 kV (human body model)
Propagation Delay	80 ns (typical)	15 ns (typical)	20 ns (typical)
Number of Drivers	1	1	1
Number of Receivers	1	1	1
Fail-Safe Receiver	Yes	No	Yes
Short-Circuit Protection	Yes	Yes	Yes
Common Mode Voltage Range	-7 V to +12 V	-7 V to +12 V	-7 V to +12 V

Summary of Key Differences

• Data Rate: The SN65HVD3082E offers the highest data rate (20 Mbps), making it suitable for high-speed applications, while the MAX13487EESA+T is limited to 500 kbps.
• Duplex Mode: The ADM2483 supports full-duplex communication, allowing simultaneous transmission and reception, whereas the other two are half-duplex.
• Operating Temperature Range: The SN65HVD3082E has a wider operating temperature range (-40°C to +125°C), making it more suitable for extreme environments.
• Power Consumption: The MAX13487EESA+T has a higher power consumption (4.5 mA) compared to the other two components (1.5 mA), which may be a consideration for battery-operated devices.
• Propagation Delay: The SN65HVD3082E has the shortest propagation delay (15 ns), which can be advantageous in high-speed applications.

Conclusion

The MAX13487EESA+T is an excellent choice for applications requiring reliable RS-485/RS-422 communication with auto-direction control. However, for high-speed applications or lower power consumption needs, the SN65HVD3082E or ADM2483 may be more suitable alternatives. Each component has its unique strengths, and the choice will depend on the specific requirements of the application.

 

Frequently Asked Questions ( FAQs )

1. What is the maximum data rate supported by the MAX13487EESA+T?
   • The MAX13487EESA+T supports data rates of up to 20 Mbps, making it suitable for high-speed communication applications.
2. What is the supply voltage range for the MAX13487EESA+T?
   • The device operates over a wide supply voltage range of 3.0V to 5.5V, allowing for flexibility in various power supply configurations.
3. Can the MAX13487EESA+T be used in battery-powered applications?
   • Yes, the MAX13487EESA+T features low quiescent current, making it ideal for battery-operated devices and energy-efficient designs.
4. What type of communication does the MAX13487EESA+T support?
   • The MAX13487EESA+T supports half-duplex communication, allowing for bidirectional data transmission over a single twisted pair of wires.
5. What is the operating temperature range of the MAX13487EESA+T?
   • The device operates effectively over a temperature range of -40°C to +85°C, making it suitable for use in harsh environments.
6. Does the MAX13487EESA+T have built-in ESD protection?
   • Yes, the MAX13487EESA+T features enhanced electrostatic discharge (ESD) protection, rated up to ±15 kV, to safeguard against damage from static electricity.
7. What are the fail-safe features of the MAX13487EESA+T?
   • The transceiver includes fail-safe mechanisms that ensure the receiver outputs a known state (high or low) when the inputs are open or shorted, enhancing communication reliability.
8. What is the package type of the MAX13487EESA+T?
   • The MAX13487EESA+T is housed in an 8-lead SOIC package, which is compact and easy to integrate into various circuit designs.
9. How does the MAX13487EESA+T handle noise in communication lines?
   • The device utilizes differential signaling, which provides high noise immunity, ensuring reliable data transmission even in electrically noisy environments.
10. Can multiple MAX13487EESA+T devices be connected on the same bus?
    • Yes, the MAX13487EESA+T is designed to support multiple devices on the same communication line, making it suitable for multi-drop configurations.
11. What is the propagation delay of the MAX13487EESA+T?
    • The transceiver features a low propagation delay, typically around 20 ns, ensuring quick and accurate data signal transmission.
12. Is the MAX13487EESA+T compatible with existing RS-485/RS-422 systems?
    • Yes, the MAX13487EESA+T is compatible with standard RS-485 and RS-422 communication protocols, allowing for easy integration into existing systems.
13. What applications are suitable for the MAX13487EESA+T?
    • The MAX13487EESA+T is suitable for a wide range of applications, including industrial automation, motor control, data acquisition systems, building automation, telecommunications, and more.
14. Where can I find the datasheet for the MAX13487EESA+T?
    • The official datasheet for the MAX13487EESA+T can be found on the Analog Devices website or through authorized distributors. It contains detailed specifications, application notes, and design resources.
15. What is the thermal shutdown feature of the MAX13487EESA+T?
    • The thermal shutdown feature protects the device from overheating by disabling the driver when the junction temperature exceeds a specified limit, ensuring safe operation.
16. What is the input hysteresis of the MAX13487EESA+T?
    • The MAX13487EESA+T features an input hysteresis typically ranging from 0.1V to 0.2V, which helps improve noise margins and ensures reliable switching in the presence of signal noise.
17. What is the driver short-circuit current capability of the MAX13487EESA+T?
    • The transceiver can handle a short-circuit current of up to 250 mA, providing robustness against accidental short circuits in the communication lines.
18. How does the MAX13487EESA+T ensure signal integrity over long distances?
    • The differential signaling used in RS-485/RS-422 communication helps maintain signal integrity over long distances by reducing the effects of common-mode noise and allowing for longer cable runs without significant signal degradation.
19. Can the MAX13487EESA+T be used in outdoor applications?
    • Yes, the wide operating temperature range of -40°C to +85°C and the robust ESD protection make the MAX13487EESA+T suitable for outdoor applications, such as environmental monitoring and remote sensor networks.
20. What is the receiver input resistance of the MAX13487EESA+T?
    • The receiver input resistance is typically between 12 kΩ and 60 kΩ, which minimizes loading on the bus and allows for multiple devices to be connected without significant signal degradation.
21. Is there a specific termination required for the MAX13487EESA+T?
    • While the MAX13487EESA+T can operate without termination, it is often recommended to use termination resistors (typically 120 ohms) at both ends of the communication line to minimize reflections and ensure signal integrity, especially over long distances.
22. What types of systems can benefit from using the MAX13487EESA+T?
    • Systems that can benefit from the MAX13487EESA+T include industrial control systems, building automation systems, remote monitoring systems, telecommunications equipment, and any application requiring reliable long-distance data communication.
23. How does the MAX13487EESA+T compare to other RS-485/RS-422 transceivers?
    • The MAX13487EESA+T stands out due to its high data rate, low power consumption, robust noise immunity, and fail-safe features. It is designed to meet the demands of modern communication systems while providing flexibility and reliability.
24. What design resources are available for the MAX13487EESA+T?
    • Analog Devices provides a variety of design resources, including application notes, reference designs, and evaluation boards, to assist engineers in implementing the MAX13487EESA+T in their projects.
25. What is the significance of the thermal resistance rating?
    • The thermal resistance rating (typically around 50 °C/W) indicates how effectively the device can dissipate heat. A lower thermal resistance means better heat dissipation, which is crucial for maintaining performance and reliability in high-temperature environments.
26. Can the MAX13487EESA+T be used in multi-drop configurations?
    • Yes, the MAX13487EESA+T is designed to support multi-drop configurations, allowing multiple transceivers to communicate over the same bus, which is ideal for applications requiring multiple nodes.
27. What is the role of the driver enable (DE) and receiver enable (RE) pins?
    • The DE pin is used to enable the driver for data transmission, while the RE pin is used to enable the receiver. These pins allow for control over the transceiver’s operation, facilitating half-duplex communication.
28. What should I consider when designing with the MAX13487EESA+T?
    • When designing with the MAX13487EESA+T, consider factors such as power supply requirements, termination resistors, PCB layout for minimizing noise, and ensuring proper grounding to maximize performance and reliability.

 

Datasheet

MAX13487EESA+T Analog Devices Datasheet

 

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