Hw-044 Datasheet Jun 2026

| HW-044 Pin | Arduino Uno Pin | | :--- | :--- | | | GND | | + (VCC) | 5V | | SW | Pin 4 | | DT | Pin 3 | | CLK | Pin 2 |

: Features a standard DB9 female connector for direct connection to a computer or industrial COM port. hw-044 datasheet

// ... pin definitions and setup as before ... | HW-044 Pin | Arduino Uno Pin |

The core of the HW-044 is the Texas Instruments MAX3232 (or equivalent compatible IC), which allows for low-power, high-speed data transmission. Specification 3.0V to 5.5V DC Communication IC MAX3232 (Dual Driver/Receiver) Maximum Data Rate Connector Type DB9 Female (RS232 side) Interface Pins VCC, GND, TX, RX (TTL side) Operating Temp -40°C to +85°C Conversion Type Bi-directional (RS232 ↔ TTL) Pinout and Connection Guide The core of the HW-044 is the Texas

Before we conclude, it's crucial to address the "HW-044" ambiguity again. While this document focuses on the RS232-TTL converter, it's vital to be aware that the same "HW-044" label may appear on other products.

: The module uses internal capacitors to generate the ±10V swings needed for RS232 communication from a single low-voltage supply.

Here are two standard connection diagrams for the HW-044.