The MAX3232EIDB is designed for use as a line transceiver, with 2 drivers and 2 receivers included in its functionality

Quantity Unit Price(USD) Ext. Price
1 $2.069 $2.07
200 $0.801 $160.20
500 $0.774 $387.00
1000 $0.759 $759.00


*The price is for reference only.
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Overview of MAX3232EIDB

The MAX3232EIDB is a dual-channel RS-232 line driver/receiver integrated circuit that offers a data rate of 250kbps and enhanced ESD protection. It is designed to facilitate the conversion between TTL/CMOS logic levels and RS-232 voltage levels, making it well-suited for interfacing microcontrollers with RS-232 devices.


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

  • R1OUT: Output for receiver 1
  • R1IN: Input for receiver 1
  • T1OUT: Output for transmitter 1
  • T1IN: Input for transmitter 1
  • R2OUT: Output for receiver 2
  • R2IN: Input for receiver 2
  • T2OUT: Output for transmitter 2
  • T2IN: Input for transmitter 2
  • VCC: Positive power supply
  • GND: Power ground
  • C1+: Positive terminal for capacitor C1
  • C1-: Ground connection for capacitor C1
  • C2+: Positive terminal for capacitor C2
  • C2-: Ground connection for capacitor C2
  • SHDN: Shutdown pin

Circuit Diagram

Include a detailed circuit diagram illustrating the connections and operation of the MAX3232EIDB IC for visual reference.

Key Features

  • Dual-Channel RS-232 Driver/Receiver: Offers two channels for bi-directional communication.
  • Data Rate: Supports data rates up to 250kbps, suitable for high-speed serial communication.
  • Enhanced ESD Protection: Provides ±15kV ESD protection on the RS-232 pins for enhanced robustness.
  • Low-Power Shutdown Mode: Features a low-power shutdown mode for energy-efficient operation.
  • Wide Operating Voltage Range: Operates from a single +3.0V to +5.5V supply, ensuring compatibility with various systems.
  • 16-Pin TSSOP Package: Comes in a compact 16-pin TSSOP package for space-saving benefits.

Note: For detailed technical specifications, please consult the MAX3232EIDB datasheet.


  • Microcontroller Connectivity: Ideal for connecting microcontrollers to RS-232-enabled devices.
  • Data Acquisition Systems: Suitable for use in data acquisition systems requiring RS-232 communication.
  • Telecommunication Devices: Used in telecommunication devices for serial data transmission.


The MAX3232EIDB serves as a dual-channel RS-232 line driver/receiver, facilitating the seamless conversion between TTL/CMOS logic levels and RS-232 voltage levels. It ensures reliable and efficient communication between microcontrollers and RS-232 devices.

Usage Guide

  • Power Supply: Connect VCC (Pin 9) to the supply voltage (3.0V to 5.5V).
  • Data Transmission: Connect the appropriate receiver and transmitter pins for bi-directional data flow.
  • Shutdown Function: Utilize the SHDN (Pin 14) pin to activate or deactivate the low-power shutdown mode.

Frequently Asked Questions

Q: What is the maximum data rate supported by the MAX3232EIDB?
A: The MAX3232EIDB is capable of supporting data rates up to 250kbps, making it suitable for high-speed communication applications.

Q: Does the MAX3232EIDB feature enhanced ESD protection?
A: Yes, the MAX3232EIDB includes ±15kV ESD protection on the RS-232 pins to ensure robust operation in challenging environments.


For comparable functionalities, consider exploring these alternatives to the MAX3232EIDB:

  • MAX3232EEIDB+: Another variant of the MAX3232 series with enhanced specifications.
  • ST3232EIDB: A dual-channel RS-232 transceiver IC from STMicroelectronics offering similar features.


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

Product Category RS-232 Interface IC RoHS Details
Mounting Style SMD/SMT Package / Case SSOP-16
Series MAX3232E Function Transceiver
Data Rate 250 kb/s Number of Drivers 2 Driver
Number of Receivers 2 Receiver Duplex Full Duplex
Supply Voltage - Max 5.5 V Supply Voltage - Min 3 V
Operating Supply Current 1 mA Minimum Operating Temperature - 40 C
Maximum Operating Temperature + 85 C ESD Protection 15 kV
Brand Texas Instruments Height 1.95 mm
Length 6.2 mm Operating Supply Voltage 3.3 V, 5 V
Product RS-232 Transceivers Product Type RS-232 Interface IC
Factory Pack Quantity 80 Subcategory Interface ICs
Supply Type Single Supply Width 5.3 mm
Unit Weight 0.004536 oz

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