Part Number: MAX3232CSE+T

Manufacturer: Analog Devices Inc./Maxim Integrated

Description: IC Transceiver Full 2/2 16SO

Shipped from: Shenzhen/HK Warehouse

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Technical Specifications of MAX3232CSE+T

Datasheet  MAX3232CSE+T datasheet
Category Integrated Circuits (ICs)
Family Interface – Drivers, Receivers, Transceivers
Manufacturer Maxim Integrated
Packaging Tape & Reel (TR)
Part Status Active
Type Transceiver
Protocol RS232
Number of Drivers/Receivers 2/2
Duplex Full
Receiver Hysteresis 300mV
Data Rate 235Kbps
Voltage – Supply 3 V ~ 5.5 V
Operating Temperature 0°C ~ 70°C
Mounting Type Surface Mount
Package / Case 16-SOIC (0.154″, 3.90mm Width)
Supplier Device Package 16-SO

MAX3232CSE+T Introduction

The MAX3232CSE+T is a Multichannel RS-232 Line Driver and Receiver With ±15-kV ESD Protection specifically designed for serial communication applications. It has several important features that are crucial components in such systems. The MAX3232CSE+T provides strong and dependable connectivity due to its two line drivers, two line receivers, and 15-kV ESD (electrostatic discharge) protection. Additionally, it satisfies the specifications outlined in the TIA/EIA-232-F standards, making it a perfect option for enabling communication between controllers and serial-port connectors. This article will provide a comprehensive analysis of the MAX3232CSE+T, highlighting its features and benefits.

Understanding the MAX3232CSE+T

Line drivers and receivers

Two line drivers and two line receivers are included in the MAX3232CSE+T and are essential for the accurate and dependable transmission and reception of serial data signals.

The outgoing serial data signals must be strengthened to travel over long distances and reach their intended locations, which is the responsibility of line drivers. The MAX3232CSE+T’s line drivers offer the necessary voltage swing and slew rate to preserve signal integrity and reduce transmission mistakes.

Line receivers are intended to reliably detect and decode incoming serial data signals on the receiving end. They are in charge of transforming the electrical impulses that are received into digital data that the linked controller can use. The MAX3232CSE+T line receivers use sensitive electronics to provide dependable signal reception even in difficult circumstances.

The MAX3232CSE+T facilitates bidirectional communication between devices connected through serial ports by including line drivers and receivers. This makes it possible for controllers and peripherals to exchange data, which supports a number of applications, including data transmission, command execution, and device control.

The MAX3232CSE+T’s line drivers and receivers cooperate to maintain signal integrity, reduce data errors, and guarantee reliable serial data transfer. In serial communication applications, its precise functionality and durable construction help the device operate well overall and be reliable.

Dual Charge-Pump Circuit with ESD Protection

Due to the dual charge-pump circuit and 15-kV ESD (electrostatic discharge) protection included in the MAX3232CSE+T, power efficiency and device protection are significantly improved.

The twin charge-pump circuit’s main function is to produce the requisite voltage levels for the line drivers and receivers to function. It makes it possible for the MAX3232CSE+T to operate reliably over a broad range of input voltages, typically between 3 V and 5.5 V. The device’s adaptability to diverse power sources increases its applicability in a variety of system setups.

Its 15-kV ESD protection is one of the MAX3232CSE+T’s distinguishing qualities. Electrostatic discharge can seriously harm circuitry and is a regular cause of concern for electronic gadgets. The MAX3232CSE+T’s ESD protection helps prevent dangerous electrostatic discharge incidents. It protects the longevity and integrity of the associated components and assists in preventing harm to the device itself.

The MAX3232CSE+T provides powerful resilience against electrostatic discharge with 15-kV ESD protection, making it appropriate for situations where static electricity discharge is a possible danger. The device will be sturdy and dependable even under difficult operating conditions thanks to this degree of protection.

It is impossible to exaggerate the significance of the MAX3232CSE+T’s dual charge-pump circuit and 15-kV ESD protection. The charge pump makes it possible for the gadget to generate voltage effectively, which allows it to function dependably throughout a variety of power supply ranges. In addition, the ESD protection guards against damaging electrostatic discharge occurrences, ensuring the durability and dependability of the device. These characteristics work together to improve the MAX3232CSE+T’s overall performance and robustness in serial communication applications.

Performance Testing and Troubleshooting

Use these recommendations to guarantee the MAX3232CSE+T operates at its best:

  • Performance Testing
  • By sending and receiving data at various speeds, you can confirm the data signaling rates.
  • Utilize an oscilloscope coupled to the output pins to determine the driver’s output slew rate.
  • By purposefully shorting the outputs of the line driver while transferring data, you can test the safety against shorts to ground.


Verify the connections to the power supply and ensure that the voltage is within the specified range.

  • Review the settings and connections for the signals.
  • Grounding should be considered, and interference and noise should be limited.
  • Look for physical damage or loose connections in the component.
  • Analyze signal quality using a logic analyzer or oscilloscope.

You can make sure the MAX3232CSE+T performs dependably and swiftly resolve any installation or operational difficulties by following these instructions.

Applications and Use Cases


The MAX3232CSE+T is used in a variety of settings and sectors where it acts as a dependable interface between serial port connections and asynchronous communication controllers. Here are some instances of its various applications:


  • Industrial Automation: The MAX3232CSE+T facilitates smooth communication between programmable logic controllers (PLCs), human-machine interfaces (HMIs), and other control devices in industrial automation systems. It guarantees reliable and accurate data transfer, enabling effective monitoring and management of industrial processes.
  • Embedded Systems: The device is frequently used in embedded systems where microcontrollers or microprocessors must use serial communication protocols to interface with peripheral devices. It makes connectivity possible for applications like sensor networks, embedded computers, and IoT (Internet of Things) gadgets.
  • Networking Hardware: The MAX3232CSE+T is a key component of networking hardware, including network interface cards, switches, and routers. Through serial ports, it facilitates communication between these devices and outside devices, enabling configuration, management, and data sharing.
  • Medical equipment: The device is suitable for medical equipment that needs serial communication capabilities because of its dependability and compatibility. It can be utilized in medical apparatus, diagnostic tools, and patient monitoring systems where precise and secure data transfer is essential.
  • Consumer electronics: The MAX3232CSE+T is used in devices such as game consoles, set-top boxes, and barcode scanners. It makes it easier for these gadgets and their accessories to connect, enabling data transfer and device control.
  • Automotive Systems: The MAX3232CSE+T facilitates communication between electronic control units (ECUs) and diagnostic instruments in automotive applications. It ensures dependable data interchange, assisting in effective vehicle maintenance and diagnostics.

The MAX3232CSE+T’s appropriateness for embedded systems, networking gear, medical devices, consumer electronics, and automotive systems illustrates its adaptability and versatility in a variety of industries. It is a crucial component in a variety of applications that call for accurate and seamless data transfer due to its strong performance and dependable serial communication capabilities.


With seamless connectivity and reliable data transmission, the MAX3232CSE+T is a flexible and dependable serial communication device. It can be used for a variety of applications thanks to features including twin line drivers, line receivers, 15 kV ESD protection, and dual charge-pump circuits.

The MAX3232CSE+T can be used in projects for dependable serial communication, and readers are urged to investigate the possibilities. Because of its adaptability, it can be used in industrial automation, embedded systems, networking, medical devices, consumer electronics, and automotive applications.

For information and assistance in successfully using the MAX3232CSE+T in your projects, contact ICRFQ. With our expertise and support, you can confidently leverage the capabilities of the MAX3232CSE+T for seamless serial communication. Trust ICRFQ as your reliable partner in maximizing the potential of the MAX3232CSE+T for your project’s success.

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