The RS232 to TTL Serial Interface Module MAX3232 8-Pin is a compact serial interface board built around the MAX3232 transceiver IC for converting signals between RS232 and TTL-level UART ports. BDTronics provides this module for electronics, robotics, prototyping, and microcontroller projects in Bangladesh. It is useful when a computer or RS232 device needs to communicate with a TTL-level microcontroller, breadboard circuit, or development board.

Features:

• MAX3232 transceiver IC for RS232-to-TTL and TTL-to-RS232 signal conversion.
• DB9 connector for direct connection to a computer COM port or RS232 device.
• Header pins and jumper cables for wiring to a breadboard or microcontroller project board.
• Pre-assembled compact interface module suitable for use with most microcontrollers.
• Supports serial communication with systems that use UART.
• Page lists applications such as radio modification, phone flash, XBOX360 flash, GPS, vehicle detection, DVD flash, hard disk repair, and set-top box upgrade.
• Can be used for programming and interfacing with STC MCU, NXP MCU, Renesas MCU, STM32 MCU, and N+-2EC MCU as listed on the product page.

Specifications:

Specification	Details
IC Chip	MAX3232 (page also refers to MAX3232CSE+ in a 16-pin narrow SO package)
Operating Voltage	3.3–5.5 V per specification table; the product description also states 3.0–5.5 V, so verify the exact board revision
Interface	RS232 to TTL serial interface, with DB9 connector and header pins
Data Rate	120 kbps maximum guaranteed rate for the MAX3232CSE+ as described; features list also mentions up to 250 kbit/s
Transceivers	Two receivers and two transmitters
Dimensions	Approx. 45 mm x 32 mm x 15 mm
Weight	Approx. 12 g

Applications:

• Serial communication between RS232 ports and TTL-level UART devices.
• Microcontroller interfacing and programming for supported MCU families.
• Radio modification, GPS, vehicle detection, and equipment firmware or upgrade tasks listed on the product page.
• Prototyping with breadboards, development boards, and embedded systems.

How to Use:

1. Connect the DB9 connector to the RS232 COM port of a computer or compatible RS232 equipment.
2. Connect the header pins to the TTL TX, RX, and ground lines of the microcontroller or breadboard circuit.
3. Use jumper cables as needed to reach the target board, and confirm that signal levels and pin mapping match your project.

Installation and Wiring:

The module is supplied as a pre-assembled board. The DB9 side is intended for an RS232 port, while the header-pin side provides TTL-level connections for a breadboard or microcontroller board. BDTronics supplies this RS232 to TTL interface module for wiring into serial communication, programming, and equipment interface tasks. Check the TX and RX orientation before powering the circuit, and use the voltage range appropriate for your board revision.

Compatibility:

• Works with systems that have a UART and require RS232-to-TTL level conversion.
• Listed for use with ATMEL and PIC microcontrollers, and for programming STC, NXP, Renesas, STM32, and N+-2EC MCUs.
• Compatible with MAX3232 IC pin functions as stated on the product page.

Package Includes:

• 1 x RS232 to TTL Serial Interface Module

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