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MAX491EESD

Name: MAX491EESD
Rating: 4.7 (12 reviews)

IC TRANSCEIVER FULL 1/1 14SOIC

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製造商。部分 #MAX491EESD
包 SOIC-14
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規格

Package	Tube,Tube
ProductStatus	Obsolete
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)

概述

Description

The MAX491EESD is a low-power, high-speed, RS-485/RS-422 transceiver designed for data communication in harsh environments. It features a wide operating voltage range of 3.0V to 5.5V, making it suitable for various applications, including industrial automation, telecommunications, and automotive systems.
Key specifications include data rates up to 20 Mbps, a differential output voltage of 1.5V, and a low quiescent current, which enhances battery life in portable devices. The device is also designed with integrated ESD protection, complying with IEC 61000-4-2 standards, ensuring robust operation in electrically noisy environments.
The MAX491EESD supports half-duplex communication and features a fail-safe design that ensures a known state in the absence of a valid input signal. Its small package size and ease of integration make it ideal for space-constrained designs. Overall, the MAX491EESD is a versatile transceiver that delivers reliable performance for various communication needs.

Features

The MAX491EESD is a high-speed, low-power RS-485/RS-422 transceiver designed for robust communication in industrial environments. Key features include:
1. Data Rate: Supports data rates up to 10 Mbps, ensuring fast communication.
2. Operating Voltage: Operates from a single +5V supply, simplifying power requirements.
3. Extended Temperature Range: Rated for -40°C to +85°C, suitable for harsh environments.
4. Low Power Consumption: Features low quiescent current, making it energy-efficient.
5. Fail-Safe Design: Includes failsafe features to prevent false data output in the absence of a valid input signal.
6. Differential Signaling: Provides improved noise immunity over single-ended communication.
7. Full-Duplex Operation: Capable of simultaneous transmission and reception, enhancing communication efficiency.
8. Short-Circuit Protection: Built-in protection against output short circuits increases reliability.
These features make the MAX491EESD ideal for industrial automation, networking, and communication applications.

Package

The MAX491EESD is available in a 16-pin TSSOP (Thin Shrink Small Outline Package) format.

Pinout

The MAX491EESD is a low-voltage, full-duplex RS-485/RS-422 transceiver with a total of 8 pins. Its primary functions include enabling high-speed data transmission over long distances while maintaining signal integrity in noisy environments. The device features differential signaling to improve noise immunity and supports data rates up to 20 Mbps.
The pin configuration includes:
1. A - Non-inverting differential output
2. B - Inverting differential output
3. RO - Receiver output (data from the receiver)
4. RE - Receiver enable (active low)
5. DE - Driver enable (active high)
6. DI - Driver input (data to be transmitted)
7. GND - Ground
8. VCC - Supply voltage (typically +3.3V to +5V)
The MAX491EESD is suitable for applications requiring robust data communication over twisted-pair cables, such as in industrial automation and embedded systems.

Manufacturer

The MAX491EESD is manufactured by Maxim Integrated, which is a company specializing in analog and mixed-signal semiconductor products. Founded in 1983, Maxim Integrated develops a wide range of integrated circuits (ICs) used in various applications, including automotive, communications, consumer electronics, and industrial systems. The company's products often focus on optimizing performance, power efficiency, and connectivity. In 2021, Maxim Integrated was acquired by Analog Devices, Inc., further expanding its portfolio and capabilities in the semiconductor industry.

Application

The MAX491EESD is a low-capacitance ESD protection device primarily used in data lines and I/O interfaces. Application areas include USB, HDMI, Ethernet, and other high-speed communication interfaces. It is also suitable for protecting sensitive components in consumer electronics, automotive systems, industrial equipment, and telecommunications to safeguard against electrostatic discharge and transients.

Equivalent

The MAX491EESD is an ESD protection device. Equivalent products include the ESD5Z3.3, ESD3Z3.3, ESD5Z5.0, and ESD5Z6.0 from various manufacturers like STMicroelectronics, Littelfuse, and Nexperia. Always verify specifications and performance criteria to ensure compatibility with your application.