Hw-044 | Datasheet !!top!!

Some clone boards swap the order. Always check the silkscreen. If you wire 5V to SIG, you will destroy your microcontroller.

The HW-044 is a widely used, low-cost RS232 to TTL converter module built around the MAX3232 IC, which operates between 3.0V and 5.5V, making it compatible with 3.3V and 5V systems. As a generic module, its technical specifications generally align with the Texas Instruments MAX3232 datasheet , which supports data rates up to 250 kbit/s and includes ESD protection on the RS232 side.

This comprehensive guide should serve as a complete reference for anyone needing a data sheet or user manual for the HW-044 RS232 to TTL converter module, from basic specs to advanced applications.

mm) makes it easy to integrate into DIY projects or equipment upgrades. hw-044 datasheet

, which uses voltage levels (±12V) that would instantly fry a modern 3.3V or 5V microcontroller. diyables.io That’s where the HW-044 module Key Specifications Based on the

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*The MAX98357 supports 3dB and 6dB, but the HW-044 only exposes these three options via the GAIN pin. Some clone boards swap the order

The HW-044 module is built around the (or similar dual H-bridge) driver IC. It offers an ultra-compact alternative to the bulkier L298N module. Specification Driver Chip MX1508 Dual H-Bridge Logic Operating Voltage Motor Supply Voltage (VCC) Continuous Current Per Channel Peak Current (Peak Pulse) Low Standby Current Less than 0.1uA Thermal Protection Built-in thermal shutdown circuit Pinout Configuration

This guide clarifies the most common modules labeled "HW-044" that you are likely to encounter. We'll explore their technical details, applications, and how to find the necessary documentation.

The HW-044 is a based on the TTP223 capacitive touch sensor IC. Unlike a physical push-button that requires mechanical force, the HW-044 detects the change in capacitance when a finger (or conductive object) approaches the pad. The HW-044 is a widely used, low-cost RS232

3.0V to 5.5V, making it compatible with both 3.3V and 5V systems. Data Rate: Supports speeds up to 250 kbps .

For new designs, especially with 3.3V microcontrollers like the ESP32 or newer STM32 boards, the for its wide voltage support and lower power consumption.

Includes internal charge pumps to generate necessary RS232 voltage levels from a single low-voltage supply without external capacitors. Common Applications

A: All three serve the same function. The key difference is the IC used. The HW-044 uses the MAX3232 , which is the most versatile. The main difference is the operating voltage: MAX232 requires 5V exclusively, while MAX3232 can be powered by 3.3V or 5V. Since the HW-044 uses the MAX3232, it is the more flexible and modern choice.