MAX485EESA+

Effective Inventory6,609

RS-422/RS-485 Interface IC

  • Manufacturer Part # : MAX485EESA+

  • Package/Case: SOIC-8

  • Brand: Analog Devices

  • Product Categories : Drivers, Receivers, Transceivers

  • Series : MAX485

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MAX485EESA+ DataSheet

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MAX485EESA+ Details

The MAX485EESA+ is a high-performance RS-485/RS-422 transceiver from Maxim Integrated, designed for reliable data communication in industrial and automotive applications. This device offers enhanced ESD protection and operates over a wide voltage range, making it suitable for robust and high-speed communication systems.

Pinout

  • 1 (DI): Driver Input
  • 2 (RO): Receiver Output
  • 3 (RE): Receiver Output Enable
  • 4 (DE): Driver Output Enable
  • 5 (GND): Ground
  • 6 (A): Non-inverting Receiver Input/Driver Output
  • 7 (B): Inverting Receiver Input/Driver Output
  • 8 (VCC): Positive Power Supply

(Tip: For detailed pinout information, please refer to the corresponding datasheet.)

Key Features

  • Enhanced ESD Protection: Provides robust ESD protection for reliable operation in harsh environments.
  • Wide Voltage Range: Operates over a wide voltage range, making it versatile for various applications.
  • High-Speed Communication: Supports high-speed data rates for efficient data transmission.
  • Industrial Grade: Designed for industrial and automotive applications with reliable performance.
  • Low Power Consumption: Efficient power management for energy-conscious applications.

Application

  • Industrial Automation: Ideal for industrial automation systems requiring robust communication.
  • Automotive Networking: Suitable for automotive networking applications where reliability is crucial.
  • Process Control Systems: Used in process control systems for accurate data transmission.

How to Use

Connect the MAX485EESA+ to your RS-485/RS-422 bus by wiring the A and B pins to the corresponding bus lines. Ensure proper power supply connections to VCC and GND. Use the DI, RO, RE, and DE pins to control and monitor data transmission. For detailed usage instructions, refer to the datasheet.

Application Circuit

The application circuit diagram for the MAX485EESA+ illustrates how to connect the transceiver to an RS-485/RS-422 network. It includes connections for power supply, ground, and communication lines, ensuring reliable data communication.

(Tip: For detailed circuit diagram connections and usage guide, refer to the datasheet.)

Equivalents

  • SN75176: A similar RS-485/RS-422 transceiver offering comparable features and performance.
  • LT1785: An alternative high-speed transceiver with enhanced communication capabilities.

Complementary

The MAX485EESA+ can be complemented by the MAX488EESA+, which provides additional features such as extended temperature range and improved ESD protection, ideal for demanding communication environments.

When selecting complementary transceivers, ensure compatibility and alignment with your specific application requirements.

Frequently Asked Questions

Q: What is the voltage range supported by the MAX485EESA+?

A: The MAX485EESA+ operates over a wide voltage range, typically from 4.5V to 5.5V. Consult the datasheet for detailed voltage specifications.

Q: Is the MAX485EESA+ suitable for automotive applications?

A: Yes, the MAX485EESA+ is designed for automotive networking applications, offering robust communication features and enhanced ESD protection.

Specifications

The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.

Product Category ! RS-422/RS-485 Interface IC RoHS Details
Series MAX485E Mounting Style SMD/SMT
Package / Case SOIC-8 Function Transceiver
Number of Drivers 1 Driver Number of Receivers 1 Receiver
Data Rate ! 2.5 Mb/s Supply Voltage - Max 5 V
Supply Voltage - Min 5 V Minimum Operating Temperature - 40 C
Maximum Operating Temperature ! + 85 C Brand Analog Devices / Maxim Integrated
Duplex Half Duplex ESD Protection 15 kV
Height 1.5 mm Input Voltage 5 V
Length 5 mm Operating Supply Current 500 uA
Operating Supply Voltage ! 5 V Output Current ! 35 mA to 250 mA
Output Voltage - 8 V to + 12.5 V Pd - Power Dissipation 471 mW
Product Type ! RS-422/RS-485 Interface IC Factory Pack Quantity 100
Subcategory Interface ICs Width 4 mm
Part # Aliases MAX485E Unit Weight 0.019048 oz

FAQs

What is MAX485EESA+?

The MAX485EESA+ is a low-power transceiver for RS-485 and RS-422 communication protocols, designed by Maxim Integrated. It is suitable for long-distance communication in industrial control systems, instrumentation, and networking applications.

How Does MAX485EESA+ Work?

The MAX485EESA+ works by converting between the RS-485/RS-422 differential signal levels and standard TTL/CMOS logic levels. It incorporates slew-rate-limited drivers that minimize EMI and reduce reflections caused by improperly terminated transmission lines. The transceiver provides full-duplex communication and supports extended common-mode range for reliable data transmission in noisy environments.

How Many Pins does MAX485EESA+ have and What are the Functions of the Pinout Configuration?

The MAX485EESA+ is housed in an 8-lead SOIC (Small Outline Integrated Circuit) package. The pinout configuration includes:

  • A: Driver output A, non-inverting.
  • B: Driver output B, inverting.
  • Y: Receiver output.
  • Z: Receiver output enable.
  • GND: Ground pin.
  • RO: Receiver output, complementary logic.
  • RE: Receiver output enable, active low.
  • DE: Driver output enable, active high.

What are the Pros and Cons of MAX485EESA+?

Pros:

  • Low Power Consumption: Operates with low power, suitable for power-sensitive applications.
  • Extended Common-Mode Range: Supports reliable communication in electrically noisy environments.
  • Driver and Receiver Enable Pins: Allows control over the transmission and reception functionalities.
  • Full-Duplex Communication: Supports simultaneous bidirectional data transfer.
  • Overvoltage Protection: Built-in protection guards the transceiver against voltage spikes and faults.

Cons:

  • External Termination: May require external termination resistors for proper signal integrity in long-distance communication.
  • Noise Sensitivity: While the transceiver has improved noise immunity, it may still be susceptible to certain noise sources.
  • Package Size: The 8-lead SOIC package may not be suitable for space-constrained designs or applications.

Are There Any Equivalents/Alternatives to MAX485EESA+ for Recommendation?

  • The SN65HVD72 from Texas Instruments is an alternative RS-485 transceiver with similar features and performance.
  • Equivalent parts to MAX485EESA+ include the LTC485 from Linear Technology and the ST485 from STMicroelectronics.

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