TXS Series Level Shifters Family (11 parts in our catalog)

The TXS series by Texas Instruments consists of bi-directional voltage-level translators specifically designed for interfacing between disparate logic voltage domains. Unlike traditional directional shifters, the TXS family utilizes an open-drain architecture with internal pull-up resistors, making it ideal for multi-master communication protocols. These devices facilitate seamless data transfer between legacy 5V components and modern low-voltage microcontrollers operating at 1.2V, 1.8V, or 3.3V without the need for a direction-control signal.

Key Features

• No direction-control signal required for bi-directional operation
• Supports up to 24 Mbps (push-pull) or 2 Mbps (open-drain) data rates
• Integrated 10-kOhm pull-up resistors to minimize external component count
• Independent power rails allowing partial power-down mode (Ioff)
• Wide supply range from 1.2V to 3.6V on Port A and 1.65V to 5.5V on Port B

Sub-families

Typical Use Cases

The TXS series is primarily employed in embedded systems where open-drain peripherals must communicate with a high-speed processor. A frequent application is interfacing I2C sensors or SMBus devices with a 1.8V SoC, where the internal pull-up resistors simplify PCB layout and ensure signal integrity. Engineers also utilize these translators for 1-Wire interfaces and SD card level shifting in mobile devices. Beyond standard bus protocols, the TXS0104 and TXS0108 are often found in modular electronics to bridge GPIO headers between 3.3V development boards and 5V legacy modules. Because they handle edge-rate acceleration automatically, they are suitable for mixed-signal environments where push-pull and open-drain drivers coexist on the same signal line, ensuring reliable logic transitions across varying capacitance loads.

Popular Variants

Top variants from across the family, with specs that differentiate them.

Alternatives to Consider