SN74LXC1T45DTQR

Translators, Level Shifters Overview

The SN74LXC1T45DTQR is a single-bit dual-supply bus transceiver from the Texas Instruments SN74LXC1T45 series. It facilitates voltage level translation between two independent power rails, supporting VCCA and VCCB ranges of 1.1V to 5.5V. The device features non-inverting bidirectional data transfer controlled by a Direction (DIR) pin referenced to VCCA. Key electrical characteristics include high drive strength up to 32mA at 5V, low quiescent current with maximum values of 3µA at 25°C and 6µA across the extended temperature range of -40°C to +125°C. It incorporates Schmitt trigger inputs for noise immunity and supports Ioff functionality for partial power-down protection.

Translators, Level Shifters Feature Summary

• Configurable dual-rail design allowing independent operation on each port within the 1.1V to 5.5V voltage range
• Robust performance with integrated dynamic pull-down resistors on I/O pins and static pull-downs on control inputs
• High drive capability providing up to 32mA output current at 5V operation
• Ioff support enabling local shutdown mode by pulling all I/Os to high impedance when either VCC supply drops below 100mV

Translators, Level Shifters Applications

• Voltage level translation between different logic families in mixed-voltage systems
• Bidirectional data buffering in portable and battery-powered devices
• Interface circuits requiring robust power sequencing tolerance
• Systems utilizing slow or noisy input signals requiring Schmitt trigger conditioning

Translators, Level Shifters Procurement Notes

Verify the specific suffix DTQR against official Texas Instruments documentation to confirm package type and tape-and-reel specifications. Ensure compatibility with required operating temperatures and voltage levels before integration. Cross-reference part numbers with authorized distributors to avoid counterfeit components. Confirm RoHS compliance status through current datasheets.

Translators, Level Shifters Selection Notes

Select this component when interfacing circuits with widely varying voltage domains, specifically where one side operates as low as 1.1V. The LXC series offers superior noise immunity compared to standard LVC variants due to Schmitt triggers. Consider the extended temperature range and high drive strength if driving capacitive loads or operating in harsh environments.

Translators, Level Shifters Part Context

This device belongs to the SN74LXC1T45 family, which extends the capabilities of the standard SN74LVC1T45. While the LVC variant typically starts at 1.65V, the LXC series supports lower voltages down to 1.1V, making it suitable for advanced low-power applications. It shares the same functional architecture but enhances flexibility for diverse power rail configurations.

Translators, Level Shifters Replacement Considerations

The SN74LVC1T45 serves as a compatible alternative for systems not requiring sub-1.65V operation. For automotive applications, verify if AEC-Q100 qualified variants like the SN74LXC1T45-Q1 are necessary instead.