LSF0002DTQR

Translators, Level Shifters Overview

The LSF0002DTQR is a Texas Instruments ultra-small auto-bidirectional voltage translator in a 6-pin X2SON package. It supports bidirectional translation between 0.95V and 5.5V without a direction pin, utilizing a VBIAS enable input. The device handles up to 100MHz up-translation and >100MHz down-translation at ≤30pF loads, or 40MHz at 50pF. It features low RON for minimal distortion, 5V tolerance I/Os for TTL compatibility, and operates from -40°C to 125°C.

Translators, Level Shifters Feature Summary

• Auto-bidirectional voltage translation without requiring a direction pin
• Supports open-drain and push-pull interfaces with low on-resistance
• Utilizes VBIAS pin for enable control and biasing relative to the lower supply voltage
• Provides high-impedance state when disabled and latch-up protection exceeding 100mA

Translators, Level Shifters Applications

• GPIO, MDIO, PMBus, SMBus, SDIO, UART, and I2C interfaces in telecom infrastructure
• Enterprise systems
• Communications equipment
• Personal electronics
• Industrial applications

Translators, Level Shifters Procurement Notes

Verify the specific DTQ suffix corresponds to the X2SON 6-pin package configuration. Confirm that the VBIAS pin implementation aligns with your system's lower power supply rail requirements. Ensure PCB layout minimizes stub lengths and capacitance to maintain signal integrity at specified frequencies. Validate that pull-up resistor values are calculated correctly for the target voltage levels and drive currents.

Translators, Level Shifters Selection Notes

Select this component for applications requiring compact footprint and automatic direction detection. It is suitable for interfacing devices with different voltage domains, such as 1.8V to 3.3V or 3.3V to 5V. Consider its switch-based architecture rather than buffer-based design. Ensure the application does not require active bidirectional driving on both sides simultaneously to avoid bus contention.

Translators, Level Shifters Part Context

The LSF0002 belongs to Texas Instruments' LSF family of auto-bidirectional translators. Unlike the LSF0x0x series, it eliminates the need for separate VREF_A and VREF_B supplies and external bias resistors. This simplifies the design by using a single VBIAS pin referenced to the lowest I/O voltage. The family is designed for flexible multi-voltage level translation in consumer and industrial electronics.

Translators, Level Shifters Replacement Considerations

LSF0002DTQT

Translators, Level Shifters FAQ

How is the device enabled?

The device is enabled by applying a voltage to the VBIAS pin, which should be tied to the lower power supply voltage (VEXT,A) of the I/Os being translated.

What is the maximum operating voltage?

The recommended operating conditions specify a maximum VEXT,B and VBIAS of 5.5V, with absolute maximum ratings allowing up to 7V on inputs.