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Name: MAX490ESA+T
Brand: Analog Devices Inc./Maxim Integrated
SKU: MAX490ESA+T
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Any Feature, including a modified Existing Feature, that is not an Existing Feature.

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Analog Devices Inc./Maxim Integrated MAX490ESA+T

Part No.:: MAX490ESA+T

Manufacturer:: Analog Devices Inc./Maxim Integrated

Package:: 8-SOIC (0.154, 3.90mm Width)

Datasheet:: MAX490ESA+T.pdf

Description:: IC TRANSCEIVER FULL 1/1 8SOIC

In Stock:: 5483

Quantity:: Add To Cart

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MAX490ESA+T Typical application Circuitry

MAX490ESA+T

The MAX490ESA+T is a low-power, slew-rate-limited RS-485/RS-422 transceiver from Maxim Integrated, designed for half-duplex communication. This device is known for its ability to facilitate reliable data transmission over long distances or in electrically noisy environments, making it highly suitable for industrial, automotive, and network communication applications.

Application Scenarios

The MAX490ESA+T is commonly used in industrial automation systems, building automation, data acquisition systems, and any application requiring robust and reliable data communication over RS-485 or RS-422 protocols.

Parameter Features

- Slew-Rate Limited: The MAX490ESA+T features a controlled slew rate, minimizing electromagnetic interference (EMI) and enabling error-free data transmission at rates up to 2.5 Mbps.

- Low Power Consumption: Its low power consumption makes it perfect for applications that are power-sensitive.

- ESD Protection: Comes with built-in ESD protection, enhancing the device's robustness in harsh electrical environments.

- Half-Duplex Communication: Supports half-duplex communication, allowing bidirectional data transmission over a single pair of wires.

Application Scenario: Industrial Control Network

In an industrial control network, the MAX490ESA+T can be employed to connect various sensors and actuators to a central control unit over an RS-485 bus, ensuring reliable communication even in the presence of electrical noise and over long cable runs.

- Power Supply Connection: Attach the MAX490ESA+T's GND pin to the system ground and its VCC pin to a regulated +5V power source.

- RS-485 Bus Connection: Connect the driver input (DI) to the transmit pin (TX) of the control unit's UART and the receiver output (RO) to the receive pin (RX). The differential driver outputs (A and B) should be connected to the RS-485 bus lines, facilitating communication with other devices on the network.

- Termination Resistor: Install a termination resistor at the end of the RS-485 bus that matches the characteristic impedance of the cable, typically around 120 ohms, to minimize signal reflections.

- Biasing Resistors: Add biasing resistors to the A and B lines to ensure a known idle state when all transceivers on the bus are in high impedance mode.

Design Considerations

- Cable Selection: Choose an appropriate twisted-pair cable for the RS-485 bus to ensure signal integrity and reliable communication over long distances.

- Power Supply Decoupling: Place a decoupling capacitor close to the VCC pin of the MAX490ESA+T to filter out noise from the power supply, ensuring stable operation.

- Network Topology: Design the RS-485 network to minimize stub lengths and adhere to a linear bus topology to prevent signal degradation and reflections.

- Device Addressing: If the network requires addressing individual devices, ensure that the control unit and all devices on the network are programmed with unique addresses and communication protocols.

By integrating the MAX490ESA+T into industrial control networks with these design principles, robust and reliable RS-485 communication can be established, enhancing the system's overall performance and dependability in challenging industrial environments.

MAX490ESA+T information

MAX490ESA+T Specifications

Package/Case:
8-SOIC (0.154, 3.90mm Width)
Packaging:
Tape & Reel (TR),Cut Tape (CT),Digi-Reel®
Series:
-
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

MAX490ESA+T FAQ

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3. Are the MAX490ESA+T price and inventory displayed accurate?

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6. What is the process for return or replacement of MAX490ESA+T?

All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the MAX490ESA+T we delivered, we will accept the replacement or return of the MAX490ESA+T only when all of the below conditions are fulfilled:

(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.

(2)We are informed of the defect described above within 90 days after the delivery of MAX490ESA+T.

(3)The PartNo is unused and only in the original unpacked packaging.

Two processes to return the products:

(1)Inform us within 90 days

(2)Obtain Requesting Return Authorizations