Hw-044 Datasheet Jun 2026

This datasheet summary is for educational/hobbyist reference. For full electrical specifications, refer to the official MAX7219 datasheet from Analog Devices.

Here is a quick look at the key specifications for the audio amplifier variant:

Positive 5V DC input pad (alternative to the USB port). IN- / -: Negative 5V DC ground pad. Output / Battery Side hw-044 datasheet

TTL конвертер переходник, плата Max3232, модуль HW-044

Connect directly to GND to ensure the module output is always active. Schematic and Dimensions This datasheet summary is for educational/hobbyist reference

Choose HW-044 when you have a digital audio source (SD card, internet stream, codec) and want the cleanest audio without analog interference.

Based on the integrated MAX3232 transceiver datasheet provided by Texas Instruments and Analog Devices : IN- / -: Negative 5V DC ground pad

For 44.1 kHz / 16-bit stereo, BCLK = 44,100 × 16 × 2 = 1.4112 MHz. The HW-044 handles this easily.

The is a highly efficient, dual-channel serial level shifter board powered by the Texas Instruments or Maxim Integrated MAX3232 IC . It translates high-voltage RS232 signals (up to ±15V) down to safe TTL/CMOS levels (3.3V or 5V) . This makes it a core bridge for linking modern microcontrollers like Arduino, ESP32, and Raspberry Pi with legacy computers, industrial instruments, and specialized serial equipment. 📋 Comprehensive Specifications

supply rail, the core MAX3232 IC on the HW-044 features an upgraded internal capacitive charge pump. This architectural improvement lets the board operate directly from logic levels. MAX3232 RS232 to TTL Serial Port Converter Module

Raspberry Pi can use the HW-044 via the device tree overlay: