TXB0104BQAR

Translators, Level Shifters Overview

The TXB0104BQAR is an automotive-grade, four-channel bidirectional voltage-level translator manufactured by Texas Instruments. It utilizes two independent configurable power-supply rails to facilitate translation between logic families operating at different voltages. The A port accepts supply voltages from 1.2 V to 3.6 V, while the B port supports 1.65 V to 5.5 V, provided that VCCA does not exceed VCCB. This architecture enables universal low-voltage bidirectional conversion across common nodes including 1.2 V, 1.5 V, 1.8 V, 2.5 V, 3.3 V, and 5 V. The device features automatic direction sensing and operates within a temperature range of -40°C to +125°C.

Translators, Level Shifters Feature Summary

• Supports bidirectional data transmission with automatic direction sensing without requiring a direction control pin
• Enables flexible voltage translation between low-voltage domains (1.2 V to 3.6 V) and higher-voltage domains (1.65 V to 5.5 V)
• Includes Ioff circuitry to support partial-power-down mode, preventing destructive backflow currents when devices are powered down
• Provides robust electrostatic discharge protection exceeding ±15 kV human-model and 1000 V machine-model standards

Translators, Level Shifters Applications

• Automotive infotainment systems requiring interface between varying voltage logic levels
• Mobile handheld devices connecting peripherals operating at different supply voltages
• Portable electronics such as tablets and smartphones for internal bus translation
• Desktop computers and peripheral interfaces managing mixed-voltage signal integrity

Translators, Level Shifters Procurement Notes

Verify the specific suffix 'BQA' corresponds to the WQFN-14 package and automotive qualification status in the official datasheet. Confirm RoHS compliance and lead-free manufacturing details. Ensure the ordering part number matches the required tape-and-reel quantity and packaging variant specified by the manufacturer for production integration.

Translators, Level Shifters Selection Notes

Select this component when designing systems requiring bidirectional level shifting between 1.2 V and 5.5 V domains without explicit direction control. It is suitable for applications demanding high ESD immunity and operation in extended temperature ranges. Verify that the source voltage (VCCA) remains lower than or equal to the destination voltage (VCCB) to ensure correct operation. Consider the WQFN-14 package constraints for PCB layout and thermal management.

Translators, Level Shifters Part Context

The TXB0104 series belongs to Texas Instruments' family of low-voltage bidirectional translators designed for seamless interoperability between different logic families. These devices eliminate the need for separate direction-control pins by automatically sensing the signal flow direction. The automotive-grade variant ensures reliability in harsh environments, making it a standard choice for modern electronic systems requiring robust voltage translation capabilities.

Translators, Level Shifters Replacement Considerations

Compatible alternatives include the TXB0104DR, TXB0104PWR, and TXB0104PW for non-automotive applications. For automotive requirements, verify cross-reference availability with other Q1-rated variants within the TXB0104 family. Ensure package compatibility and electrical specifications match before substitution.