Introducing the RS232 to TTL Serial Interface Module, a versatile solution that uses the MAX3232 transceiver IC to enable seamless communication between TTL and RS232 ports. This module converts electrical signals between the two standards, making it an essential tool for a wide range of projects.
The module features a DB9 connector on one end, and four header pins with jumper cables on the other, providing flexibility for various connection setups. The jumper cables allow for easy integration with breadboards or microcontroller boards, while the DB9 connector connects directly to a computer’s COM port.
At the heart of the module is the MAX3232CSE+ IC, which comes in a 16-pin narrow SO package and operates within a voltage range of 3.0V to 5.5V. It includes two receivers and two transmitters, supporting a maximum data rate of 120 kbps for efficient serial communication. The module also requires four 0.1µF charge-pump capacitors and is fully compatible with the MAX3232 IC pinout. Ideal for systems using UART, it integrates easily with microcontrollers like ATMEL, PIC, and others.
Features:
- Facilitates serial communication between TTL and RS232 ports
- Compact and pre-assembled board for convenience
- Wide range of applications including radio modification, DVD flash, GPS, and more
- Suitable for programming various microcontroller modules such as STC, NXP, Renesas, STM32, and more
- Supports data rates up to 250 kbit/s
- Operating voltage: 3.3-5.5V
- DB9 connector and jumper cables for easy connection
- Compact size for seamless integration into projects
Specifications:
| Feature | Description |
|---|---|
| IC Chip | MAX3232 |
| Operating Voltage | 3.3-5.5V |
| Compatibility | STC MCU, NXP MCU, Renesas MCU, STM32 MCU, N+-2EC MCU, and most microcontrollers |
| Data Rate | Up to 250 kbit/s |
| Applications | Radio modification, DVD flash, GPS, vehicle detection, hard disk repair, set-top box upgrade, and more |
| Board Type | Pre-assembled compact size board |
| Interface | RS232 to TTL serial communication |
| Connector | DB9 connector |
Upgrade your projects with the RS232 to TTL Serial Interface Module, your reliable solution for efficient serial communication and data transfer.
Package Includes
- 1 x RS232 to TTL Serial Interface Module
RS232 to TTL Serial Interface Module 4 PINS Overview
The RS232 to TTL Serial Interface Module 4 PINS is a compact pre-assembled board based on the MAX3232CSE+ transceiver IC. It converts RS232 voltage levels via a DB9 connector to 3.3–5.5V TTL logic on a 4-pin header, enabling seamless serial communication between PCs and microcontrollers.
Key Features of RS232 to TTL Serial Interface Module 4 PINS
- MAX3232CSE+ IC for reliable RS232↔TTL signal conversion
- Standard DB9 female connector for direct COM port connection
- 4-pin male header (VCC, GND, TXD, RXD) compatible with Arduino and other MCU boards
- Wide operating voltage range: 3.3V to 5.5V
- Pre-assembled, compact PCB for easy integration
- Genuine product with fast shipping from Zbotic
Applications and Use Cases
- Programming STC, NXP, Renesas, STM32 and Nuvoton MCU families via serial bootloader
- Connecting legacy RS232 devices (modems, sensors, industrial controllers) to TTL-based systems
- Debugging serial output from embedded prototypes on breadboards
- Establishing communication between a PC’s COM port and Arduino, ESP8266 or ESP32 boards
- Serial data logging to a desktop computer from custom embedded hardware
How to Use RS232 to TTL Serial Interface Module 4 PINS
Simply plug a DB9 cable into your PC’s COM port and connect the module’s four pins to your microcontroller: VCC to 3.3–5.5V, GND to ground, TXD to MCU RX, and RXD to MCU TX. Power the board within the specified range and use any terminal software or IDE serial monitor to send and receive TTL-level data.
Why Buy from Zbotic?
- Genuine Products: All items sourced from authorized distributors
- Fast Shipping: Orders ship within 24 hours with tracking (non backordered products)
- Free Shipping: Free delivery on qualifying orders
- COD Available: Cash on Delivery, UPI, cards, net banking
- Technical Support: Expert help for setup and troubleshooting
- Easy Returns: Hassle-free replacement for defective products
Frequently Asked Questions
What voltage levels does this module support?
The module operates between 3.3V and 5.5V, making it suitable for both 3.3V and 5V microcontroller platforms.
How do I wire the 4-pin header to my MCU?
Connect the header pins as follows: VCC to your MCU’s power pin (3.3–5.5V), GND to ground, TXD on the module to RX on the MCU, and RXD on the module to TX on the MCU.
Can I use this module to program an STM32 microcontroller?
Yes. This RS232 to TTL module is compatible with STM32 serial bootloader programming as well as STC, NXP, Renesas and Nuvoton MCU families.
Technical Specifications
| Model | RS232 |
|---|---|
| Interface / Protocol | RS232, TTL |
| SKU | AI6497 |
| Weight | 0.0208 kg |
| Availability | In Stock |
Applications & Use Cases
The RS232 to TTL Serial Interface Module 4 PINS is a versatile usb interface module used across a wide range of applications including serial communication, industrial automation, data logging, PLC interfacing, and IoT gateway.
Common use cases:
- Converting USB to RS485 for industrial equipment
- Building a data logger for factory sensors
- Debugging embedded systems via UART
This product is ideal for embedded system developers and industrial automation engineers.
Technical Tip: Industrial-grade modules with isolation protect against ground loops and voltage spikes in noisy environments.
Shipping & Delivery
- Free shipping on orders above ₹999 across India
- Dispatched within 1-3 business days
- Expected delivery: 3-7 business days depending on location
- Secure packaging to ensure safe transit of electronic components
Yogesh Mukherjee (verified owner) –
Perfect RS232 to TTL Serial Interface Module. Works as expected. Packaging was secure and product arrived safely.
Nikita Negi (verified owner) –
Perfect RS232 to TTL Serial Interface Module. Works as expected. Packaging was secure and product arrived safely.
Atharv Bhandari (verified owner) –
Bought this RS232 to TTL Serial Interface Module after researching many options. Best decision! Works flawlessly.
Akshat Dhawan (verified owner) –
Excellent product! My college project is a success thanks to this RS232 to TTL Serial Interface Module from Zbotic.
Ravi Chatterjee (verified owner) –
Excellent RS232 to TTL Serial Interface Module! Works perfectly as described. Very happy with this purchase.
Pranav Vyas (verified owner) –
Outstanding quality! This RS232 to TTL Serial Interface Module exceeded my expectations. Great purchase.
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Great quality RS232 to TTL Serial Interface Module. Fast delivery from Zbotic. Highly recommended.
Naman Saxena (verified owner) –
Very impressed with the quality of this RS232 to TTL Serial Interface Module. Will definitely order again.
Anil Bhandari (verified owner) –
Pretty good RS232 to TTL Serial Interface Module. Quality is reasonable for the price point.
Riya Singh (verified owner) –
Outstanding quality! This RS232 to TTL Serial Interface Module exceeded my expectations. Great purchase.
Himanshu Khurana (verified owner) –
Excellent product! My college project is a success thanks to this RS232 to TTL Serial Interface Module from Zbotic.
Bhavna Bhandari (verified owner) –
Decent quality RS232 to TTL Serial Interface Module. Delivered on time. Satisfied with the purchase.
Advik Arora –
Pretty good RS232 to TTL Serial Interface Module. Quality is reasonable for the price point.
Sakshi Saxena (verified owner) –
Superb RS232 to TTL Serial Interface Module! Value for money. Zbotic always delivers genuine products.
Neeraj Hegde (verified owner) –
Very satisfied with this RS232 to TTL Serial Interface Module. My project is working perfectly now.
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Great quality RS232 to TTL Serial Interface Module. Fast delivery from Zbotic. Highly recommended.
Manoj Sharma (verified owner) –
Good RS232 to TTL Serial Interface Module. Works as described. Packaging could be improved slightly.
Eshan Thakur (verified owner) –
Very satisfied with this RS232 to TTL Serial Interface Module. My project is working perfectly now.
Kabir Dhawan (verified owner) –
Okay RS232 to TTL Serial Interface Module. Functional but not outstanding. Serves its purpose.
Mohit Rawat –
Nice RS232 to TTL Serial Interface Module. Does the job well. Good value for money.
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Outstanding quality! This RS232 to TTL Serial Interface Module exceeded my expectations. Great purchase.
Parth Khanna (verified owner) –
Nice RS232 to TTL Serial Interface Module. Does the job well. Good value for money.
Sahil Nayak (verified owner) –
Excellent product! My college project is a success thanks to this RS232 to TTL Serial Interface Module from Zbotic.
Akash Kohli (verified owner) –
Very impressed with the quality of this RS232 to TTL Serial Interface Module. Will definitely order again.
Swati Dave –
This RS232 to TTL Serial Interface Module is exactly what I needed for my project. Top notch quality.
Rajesh Sharma (verified owner) –
Good RS232 to TTL Serial Interface Module. Works as described. Packaging could be improved slightly.
Advik Panchal –
This RS232 to TTL Serial Interface Module is perfect for hobbyists and students. Great quality components.
Bharat Naidu (verified owner) –
Top quality RS232 to TTL Serial Interface Module. Zbotic is my go-to store for electronics components.
Lalit Agarwal (verified owner) –
Decent quality RS232 to TTL Serial Interface Module. Delivered on time. Satisfied with the purchase.
Vaishali Rajan (verified owner) –
Excellent RS232 to TTL Serial Interface Module! Works perfectly as described. Very happy with this purchase.
Hitesh Negi –
This RS232 to TTL Serial Interface Module is perfect for hobbyists and students. Great quality components.