These devices automatically implement communication and data conversion, facilitating compatibility between equipment, reducing the load on the microcontroller, and providing stability and standardization, as well as offering isolation and greater design flexibility.
Mecter SL presents the HT42Bxxx series of integrated circuits from its represented company, Holtek. This series comprises bridges from serial interfaces (I²C, SPI, UART, USBT) to CAN Bus and from gUSB to serial buses (I²C, SPI, UART). Each model incorporates a protocol controller and dedicated buffers that ensure continuous data flow and uninterrupted transfers, reducing firmware complexity and accelerating application development.
The HT42Bxx6 x subfamily consists of bridge devices that convert I²C/SPI/UART/USB interface signals to the CAN bus protocol. These devices incorporate a fully integrated, Bosch-licensed CAN module, compatible with the CAN 2.0A/B protocol specifications and compliant with ISO 11898-1.
The HT42B216-1 uses an I²C interface with a speed of up to 400 kHz. The HT42B316 1 uses an SPI interface with speeds up to 12 MHz. The HT42B416 1 uses a UART interface with speeds up to 115.2 kbps, and the HT42B536 1 uses a USB 2.0 Full Speed interface. The entire subfamily supports an operating temperature range of -40 °C to 105 °C, requires a supply voltage from 3.0 V to 5.5 V, and is supplied in a 16-pin NSOP package. This subfamily of jumpers offers an excellent solution for automotive electronic control, area monitoring, industrial control, sensor networks, medical equipment, and more.
On the other hand, the HT42B5xx subfamily is a series of USB bridge devices, which includes four products: the HT42B532-1 (USB to I²C), the HT42B533-1 (USB to SPI), the HT42B534-1 (USB to UART), and the HT42B564-1 (also USB to UART). The first three HT42B533-1 devices use the USB CDC protocol, while the HT42B564-1 uses the USB HID protocol. Regardless of the device chosen, none require the installation of an additional driver.
Regarding the HT42B534-1 – USB to UART Bridge, users can directly utilize its integrated USB interface to modernize their existing UART solutions, such as RS-232 blood pressure monitors, electronic scales, and other consumer products. As for the HT42B533-1 – USB to SPI Bridge and the HT42B532-1 – USB to I²C Bridge, both the SPI and I²C interfaces can operate in master or slave mode via control commands. This feature makes them suitable for data transmission applications, such as RF dongles.
The entire range of USB bridge devices is compatible with various operating systems, including Windows, Mac OS X, and Android 4.0 and later. Furthermore, all models in the subfamily incorporate 256 bytes of user-available EEPROM memory and support an operating temperature range of -40°C to 85°C. They are supplied in 8SOP, 10SOP, 10MSOP, or 16NSOP packages, depending on the model. Furthermore, they incorporate a fully integrated high-speed oscillator, which simplifies their use and improves performance.
