New Hex Level Translator and Line Driver: Universal Compatibility from 1.6V to 5.5V

Texas Instruments has recently unveiled a new hex level translator for logic that also functions as a line-driver. Known as the SN74LV6T17-EP, this device is part of the LVxT logic family and features six independent buffers with Schmitt-trigger inputs.

The SN74LV6T17-EP is designed to support a wide range of supply voltages, ranging from 1.6V to 5.5V. It is compatible with various CMOS levels, including 1.8V, 2.5V, 3.3V, and 5V. The input of this translator has a lower threshold than usual, allowing for up-translation of lower voltage CMOS inputs. For example, it can translate 1.2V input to 1.8V output or 1.8V input to 3.3V output.

One of the notable features of the SN74LV6T17-EP is its 5V-tolerant inputs, which enable down-translation. This means it can translate 3.3V input to 2.5V output. The complete list of supported voltage translations includes: 1.2-1.8V, 1.5-2.5V, 1.8-3.3V, 3.3-5V, as well as 5V, 3.3V, or 2.5V to 1.8V, 5V or 3.3V to 2.5V, and 5V to 3.3V.

When operating with supply voltages between 3.3V and 5V, the SN74LV6T17-EP can deliver up to ±15mA at the output. However, this current capability decreases as the supply voltage drops, reaching ±3mA with supplies of 1.6V to 2V. The device also offers a switching speed of up to 150Mbit/s when running at 5V or 3.3V.

One of the potential applications for this hex level translator is driving transmission lines. According to Texas Instruments, the SN74LV6T17-EP can be used to drive signals over relatively long traces or transmission lines. To minimize ringing caused by impedance mismatches, a series damping resistor can be added in line with the transmitter's output. Even a small amount of resistance can significantly improve signal integrity in this type of application.

The SN74LV6T17-EP is packaged in a compact 5 x 6.4mm 14-pad TSSOP package, making it suitable for various electronic designs.