• ADM3491ARZ SOIC-14


Industrial-grade communication component

Quantity Unit Price(USD) Ext. Price
1 $4.556 $4.56
200 $1.763 $352.60
500 $1.702 $851.00
1000 $1.671 $1,671.00


*The price is for reference only.
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Overview of ADM3491ARZ

The ADM3491ARZ is a half-duplex RS-485 transceiver IC that combines low power consumption with robust performance. It is designed for industrial applications requiring reliable data communication over long distances.


(Note: The pin configuration below is a general representation. Refer to the specific datasheet for precise details.)

  • A: Driver Output A
  • B: Driver Output B
  • GND: Ground
  • VCC: Positive Power Supply
  • RXD: Receiver Data Input
  • RO: Receiver Data Output
  • RE: Receiver Output Enable
  • DE: Driver Output Enable
  • SLEW: Slew Rate Control
  • NC: No Connection

Circuit Diagram

Include a circuit diagram illustrating the connections and operation of the ADM3491ARZ IC for a visual representation.

Key Features

  • Half-Duplex RS-485 Transceiver: Provides reliable communication in half-duplex RS-485 networks.
  • Low Power Consumption: Features low power operation suitable for energy-efficient applications.
  • Overvoltage Protection: Offers overvoltage protection for safeguarding against voltage spikes.
  • Extended Temperature Range: Operates over a wide temperature range, making it suitable for industrial environments.
  • Driver/Receiver Enable Pins: Allows control over driver and receiver operations for flexibility in data transmission.

Note: For detailed technical specifications, please refer to the ADM3491ARZ datasheet.


  • Industrial Automation: Ideal for use in industrial automation systems requiring robust communication.
  • Building Automation: Suitable for building automation systems for controlling and monitoring devices.
  • Remote Monitoring: Used in remote monitoring applications for transmitting data over long distances.


The ADM3491ARZ is a half-duplex RS-485 transceiver that enables reliable data communication in industrial settings. It ensures efficient transmission of data over long distances with low power consumption.

Usage Guide

  • Power Supply: Connect VCC (Pin 4) to the positive power supply within the specified voltage range.
  • Data Connections: Connect the A/B pins for driver output and RXD/RO pins for receiver data transmission.
  • Enable Pins: Control the DE (Driver Enable) and RE (Receiver Enable) pins for enabling the respective functions.

Frequently Asked Questions

Q: Can the ADM3491ARZ be used in full-duplex communication?
A: No, the ADM3491ARZ is designed for half-duplex operation in RS-485 networks. For full-duplex communication, consider alternative transceiver ICs.

Q: What is the maximum data rate supported by the ADM3491ARZ?
A: The ADM3491ARZ can support data rates up to 250kbps, suitable for various industrial communication applications.


For similar functionalities, consider these alternatives to the ADM3491ARZ:

  • MAX485: A popular RS-485 transceiver IC offering similar features and performance to the ADM3491ARZ.
  • SN65HVD485: This transceiver IC from Texas Instruments provides robust RS-485 communication capabilities comparable to the ADM3491ARZ.


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 ADM3491 Mounting Style SMD/SMT
Package / Case SOIC-14 Function Transceiver
Number of Drivers 1 Driver Number of Receivers 1 Receiver
Data Rate 10 Mb/s Supply Voltage - Max 3.3 V
Supply Voltage - Min 3.3 V Minimum Operating Temperature - 40 C
Maximum Operating Temperature + 85 C Brand Analog Devices
Duplex Full Duplex Height 1.5 mm
Length 8.75 mm Number of I/Os 1
Number of Input Lines 10 at RS-422, 32 at RS-485 Number of Output Lines 1
Operating Supply Current 1 uA Operating Supply Voltage 3.3 V
Output Type 3-State Product Type RS-422/RS-485 Interface IC
Shutdown Shutdown Factory Pack Quantity 56
Subcategory Interface ICs Width 4 mm
Unit Weight 0.011923 oz

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