The most critical section of the HW-044 datasheet for the builder is the pinout. Unlike many sensors that require 4 pins (VCC, GND, and data), the HW-044 typically uses a .
The HW-044 is a two-in-one solution, ideal for portable projects where space and component count matter. However, for high-speed logic (SPI > 1MHz), a dedicated level shifter like the TXB0108 is superior. hw-044 datasheet
To properly utilize the component, one must understand the parameters typically found in a HW-044 datasheet. While manufacturers may vary slightly, the standard specifications are as follows: The most critical section of the HW-044 datasheet
Whether you’re a hobbyist building your first IoT device or an engineer prototyping a mixed-voltage system, the HW-044 remains an excellent choice—provided you know its datasheet by heart. However, for high-speed logic (SPI > 1MHz), a
| Feature | HW-044 | HW-050 (Mini 3.3V) | Logic Level Converter (Bi-Directional) | |---------|--------|---------------------|------------------------------------------| | Regulator | Yes (AMS1117) | Yes (AMS1117) | No | | Level Shifter | Yes (4-channel) | No | Yes (4- or 8-channel) | | Max Current | 800mA | 800mA | N/A (external supply) | | Typical Use | Power + Logic | Pure power | Pure logic | | Cost | $2-3 | $1-2 | $1-2 |
Understanding the HW-044 pinout is essential for correct integration. The board typically has two rows of pins, often labeled on the PCB silk screen.
| Parameter | Condition | Min | Typ | Max | Unit | |-----------|-----------|-----|-----|-----|------| | VIN (unregulated) | Using onboard regulator | 4.5 | 5-9 | 12 | V | | VIN (regulator bypass – not recommended) | – | 3.0 | 3.3 | 3.6 | V | | 3.3V Output Current | Natural cooling | 0 | 400 | 800 | mA | | Logic Frequency | Without pull-up resistors | – | – | 100 | kHz | | Logic Frequency | With 10kΩ pull-ups | – | – | 400 | kHz |