TXB0108ZXYR datasheet & price | pdf

Key Features of the TXB0108ZXYR

The TXB0108ZXYR is a bidirectional voltage-level translator designed to safely interface logic circuits operating at different voltage levels. It supports automatic direction sensing, meaning it can seamlessly transfer data between devices with voltage differences, like 1.8V, 2.5V, 3.3V, and 5V logic systems. This device is perfect for applications like I2C, SPI, and other communication protocols that require different logic levels. With fast switching speeds and low power consumption, the TXB0108ZXYR ensures reliable data transfer while minimizing signal degradation. Its compact package makes it ideal for space-constrained designs, offering both versatility and performance in a small footprint.

TXB0108ZXYR Pinout

Pinout Usage and Notes

The TXB0108ZXYR is designed to interface different voltage logic systems by using its A and B pins for low and high voltage sides, respectively. The VCCA and VCCB pins power the low and high voltage sides, while the OE pin controls whether the output buffers are enabled. The ground pin (GND) should be connected to the system ground for proper operation. Make sure to connect the appropriate logic voltage levels to the A and B pins based on your circuit’s requirements to ensure seamless translation and avoid damage to the device.

TXB0108ZXYR Equivalent Models

Equivalent Models Usage and Notes

If you’re looking for an alternative to the TXB0108ZXYR, options like the TXB0108PWR and BSS138L offer similar features, supporting voltage translation with bidirectional data flow. The TXB0108PWR is almost identical in performance but might be more readily available. For higher speed applications, models like the SN74LVC8T245A or TXB0102 provide faster data rates (up to 25Mbps). However, note that the SN74LVC8T245A includes additional features like bus-hold, which could be useful in certain applications. When selecting a replacement, consider the required speed, features, and package size for compatibility with your project.

Choosing the Right Voltage Translator for Your Circuit

When choosing a voltage translator like the TXB0108ZXYR, it’s important to match the model with your circuit’s speed and voltage requirements. The TXB0108ZXYR offers bidirectional translation with automatic direction sensing, making it ideal for many standard applications. If you need something with similar capabilities but with a different feature set, models like the TXB0108PWR or SN74LVC8T245A could work, offering faster speeds or additional features like bus-hold. Be sure to consider factors like data rate, bidirectional support, and package type when selecting the best fit for your design.

I couldn’t locate a specific schematic featuring the TXB0108ZXYR. However, I can provide a general overview of how this component is typically used in circuits.

TXB0108ZXYR Circuit Overview

The TXB0108ZXYR is a bidirectional voltage-level translator designed to interface logic circuits operating at different voltage levels. It supports automatic direction sensing, allowing seamless data transfer between devices with voltage differences, such as 1.8V, 2.5V, 3.3V, and 5V logic systems.

Typical Application

In a typical circuit, the TXB0108ZXYR is used to connect a microcontroller operating at one voltage level (e.g., 3.3V) to a peripheral device operating at a different voltage level (e.g., 5V). The A-side pins (A1 to A8) are connected to the microcontroller’s I/O pins, while the B-side pins (B1 to B8) are connected to the peripheral device’s I/O pins. The VCCA and VCCB pins are connected to the respective power supplies for the A and B sides. The OE (Output Enable) pin controls the output state of the device.

Usage Notes

• Power Supply: Ensure that VCCA is less than or equal to VCCB. VCCA typically ranges from 1.2V to 3.6V, while VCCB ranges from 1.65V to 5.5V.

• I2C Consideration: When using I2C communication, be aware that the TXB0108ZXYR may not be suitable due to its strong pull-up resistors, which can interfere with the I2C bus. In such cases, consider using the TXS0108E, which is designed for I2C applications.

• PCB Layout: Keep trace lengths short and minimize capacitance to ensure reliable operation, especially at higher data rates.

For more detailed information, refer to the TXB0108 datasheet.