MAX491ESD+

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MAX491ESD+

RS-485/RS-422 TRANSCVR

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Specifications

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Overview

Description

The MAX491ESD+ is a high-speed, low-power RS-485 transceiver designed for robust communication in industrial and other environments requiring ESD protection. It supports data rates up to 20 Mbps and features a differential signaling approach, allowing for noise immunity and long-distance data transmission.
Key features include a wide operating voltage range (3.0V to 5.5V), low power consumption, and integrated ESD protection up to ±15kV for contact discharge and ±30kV for air gap discharge, ensuring reliability in harsh conditions. The MAX491ESD+ supports half-duplex operation, making it suitable for various applications, including industrial automation, remote sensing, and data acquisition systems.
The device is available in various package options, facilitating integration into different circuit designs. Overall, the MAX491ESD+ is an ideal choice for reliable, high-speed data communication in environments where protection against electrical surges is critical.

Features

The MAX491ESD+ is a high-speed, low-power transceiver designed for RS-485 and RS-422 communication. Key features include:
1. Data Rate: Supports data rates up to 10 Mbps.
2. ESD Protection: Offers robust ESD protection (up to ±15 kV contact and ±30 kV air) for enhanced reliability.
3. Low Power Consumption: Operates with a low supply current of around 100 µA in standby mode, making it energy-efficient.
4. Wide Supply Voltage Range: Accepts a supply voltage from 3.0V to 5.5V.
5. Fail-Safe Features: Provides fail-safe operation with an integrated biasing scheme for open-circuit and short-circuit conditions.
6. High Noise Immunity: Designed for improved noise immunity and longer cable runs.
7. Package Options: Available in various small packages, suitable for space-constrained applications.
These features make the MAX491ESD+ ideal for industrial automation, building automation, and other applications requiring robust and reliable data communication.

Package

The MAX491ESD+ is packaged in a 16-pin TQFN (Thin Quad Flat No-lead) package, which provides a compact design suitable for surface mounting.

Pinout

The MAX491ESD+ is a low-capacitance, ESD-protected RS-485/RS-422 transceiver designed for data communication. It features a total of 8 pins.
Here are the pin functions:
1. A (Pin 1): Non-inverting data input/output.
2. B (Pin 2): Inverting data input/output.
3. Y (Pin 3): Receiver output.
4. Z (Pin 4): Receiver input.
5. DE (Pin 5): Driver enable input (active high).
6. RE (Pin 6): Receiver enable input (active low).
7. VCC (Pin 7): Supply voltage.
8. GND (Pin 8): Ground.
The device supports up to 500 kbps data rates and is designed for robust communication in noisy environments.

Manufacturer

The MAX491ESD+ is manufactured by Maxim Integrated, which is a semiconductor company. Maxim Integrated specializes in designing and producing analog and mixed-signal integrated circuits, including products for signal processing, power management, and interface solutions. The company is known for its focus on high-performance and innovative solutions across various applications, including automotive, industrial, telecommunications, and consumer electronics. In 2021, Maxim Integrated was acquired by Analog Devices, Inc., further expanding its portfolio and market reach in the semiconductor industry.

Application

The MAX491ESD+ is a high-speed RS-485/RS-422 transceiver with ESD protection, suitable for industrial automation, data acquisition systems, and building automation. It is commonly used in applications requiring robust communication over long distances, such as in telecommunications, security systems, and automotive networks. Its ESD protection makes it ideal for environments with high electrical noise and potential voltage transients.

Equivalent

Equivalent products to the MAX491ESD+ chip include the Texas Instruments TPD1E05U06, ON Semiconductor NC7S04, and the NXP Semiconductors BAV99. These devices serve similar functions in ESD protection and signal integrity. Always verify specifications and compatibility for your specific application.

Shipping

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offer global shipping services through DHL, FedEx, TNT, UPS, or any other forwarder of your choice.


Shipping Fee Reference (DHL/FedEx):

DHL: Shipping cost ranges from $25-$45 (0.5kg), with an estimated delivery time of 2-5 business days.

FedEx: Shipping cost ranges from $25-$40 (0.5kg), with an estimated delivery time of 3-7 business days.

UPS: Shipping cost ranges from $25-$45 (0.5kg), with an estimated delivery time of 3-7 business days.

TNT: Shipping cost ranges from $25-$65 (0.5kg), with an estimated delivery time of 3-7 business days.

EMS: Shipping cost ranges from $30-$50 (0.5kg), with an estimated delivery time of 7-15 business days.

Registered Air Mail: Shipping cost is $2-$4 (0.1kg), with an estimated delivery time of 5-20 business days.

Payments

Payment Methods

The Payment term is 100% Prepaid.

Currently, we only accept the below payment methods:

1. PayPal

2. Credit/ Debit Card

3. Wire Transfer

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