SN74LXCH1T45DTQR

Translators, Level Shifters Overview

The SN74LXCH1T45DTQR is a single-bit dual-supply noninverting bidirectional voltage level translation device with bus-hold inputs and 3-state outputs. It supports configurable voltage translation across ports A and B, each operating from 1.1 V to 5.5 V. The DIR control input, referenced to VCCA, determines data flow direction between the ports. The component features robust glitch-free power supply sequencing and Schmitt-trigger control inputs for noisy environments. It operates within an ambient temperature range of -40°C to +125°C.

Translators, Level Shifters Feature Summary

• Fully configurable dual-rail design allows independent operation of each port from 1.1 V to 5.5 V
• Bus-hold circuitry on data inputs eliminates the need for external pull-up or pull-down resistors
• Schmitt-trigger control inputs enable reliable operation with slow or noisy signals
• VCC isolation and disconnect feature ensures high-impedance state when supplies drop below 100 mV

Translators, Level Shifters Applications

• Eliminating slow or noisy input signals in digital circuits
• Driving indicator LEDs or buzzers from low-voltage logic
• Debouncing mechanical switches
• General-purpose I/O level shifting between mixed-voltage domains

Translators, Level Shifters Procurement Notes

Verify the DTQR suffix corresponds to the X2SON (DTQ) package variant as specified in the Texas Instruments datasheet. Confirm that the ordering information matches the specific tape-and-reel packaging requirements for automated assembly. Ensure compatibility with the target PCB footprint dimensions of 1.00 mm by 0.80 mm before finalizing procurement.

Translators, Level Shifters Selection Notes

Select this component when designing systems requiring bidirectional translation between widely varying voltage levels, such as 1.1 V to 5.5 V. The integrated bus-hold feature simplifies layout by removing external resistors. Verify that the required propagation delay and data rate specifications align with the system timing constraints under the specific operating voltage conditions.

Translators, Level Shifters Part Context

This device belongs to the SN74LXCH1T45 family of single-bit dual-supply bus transceivers. It is part of Texas Instruments' portfolio of logic ICs designed for flexible voltage translation in mixed-signal and multi-voltage embedded systems. The family includes various package options to suit different space and thermal requirements.

Translators, Level Shifters Replacement Considerations

Check for SN74LXCH1T45DCKR or SN74LXCH1T45DRY2 if alternative packages are needed. Ensure functional equivalence regarding voltage ranges and pinout compatibility before substitution.