Txs0104 - How it works
The Logic Level Converter I2C TXS0104 Board by Soldered is designed for converting I2C communication signals and enables safe voltage level shifting between 3.3V and 5V logic systems, facilitating communication between devices with different voltage requirements.
How it works
The TXS0104 is a directionless voltage-level translator designed to convert logic signals between different voltage levels. The A port supports input/output voltages from 1.65V to 3.6V, while the B port handles voltages from 2.3V to 5.5V. Built on a pass-gate architecture, the device incorporates edge-rate accelerators (one-shots) to enhance data transfer speeds. It also features integrated 10-kΩ pull-up resistors, commonly used in open-drain configurations, eliminating the need for external resistors. Although primarily intended for open-drain applications, the TXS0104E can also be used to translate push-pull CMOS logic outputs.
Enable and Disable
The TXB0104 has an OE input that disables the device when OE is set to low, which places all I/Os in the high-impedance (Hi-Z) state. The disable time (tdis) indicates the delay between when OE goes low and when the outputs actually become disabled (Hi-Z). The enable time (ten) indicates the amount of time the user must allow for the one-shot circuitry to become operational after OE is taken high.
How to connect it?
- Connect Power:
- Connect HVCC to the high-voltage power source (e.g., 5V) and LVCC to the low-voltage source (e.g., 3.3V).
- Connect GND to the ground of both the high and low-voltage systems.
- Wiring the Signals:
- Connect the B1-B4 pins to the high-voltage signal lines from your device (e.g., 5V microcontroller).
- Connect the A1-A4 pins to the low-voltage signal lines (e.g., 3.3V sensor).
- Verify Connections:
- Ensure the correct orientation and check that each signal is connected to the proper high- or low-voltage side.