SN74LXCH1T45DRYR

Translators, Level Shifters Overview

The SN74LXCH1T45DRYR is a single-bit, dual-supply, non-inverting bidirectional voltage level translator manufactured by Texas Instruments. It operates with VCCA and VCCB rails ranging from 1.1 V to 5.5 V. The device supports data rates up to 420 Mbps when translating between 3.3 V and 5.0 V. It features Schmitt-trigger inputs for noise immunity and integrated bus-hold circuitry on data lines. The DIR control input, referenced to VCCA, determines transmission direction. The DRY suffix indicates the SON (6-pin) package.

Translators, Level Shifters Feature Summary

• Configurable dual-rail design allows independent operation of ports across wide voltage ranges
• Integrated bus-hold circuitry eliminates the need for external pull-up or pull-down resistors
• Schmitt-trigger control inputs ensure reliable performance with slow or noisy signals
• VCC isolation and disconnect features support partial-power-down modes

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 different voltage domains

Translators, Level Shifters Procurement Notes

Verify the ordering suffix matches the required package type; 'DRY' specifies the 6-pin SON package. Confirm that the specific revision of the datasheet aligns with your design requirements. Ensure supply voltages remain within the 1.1 V to 5.5 V range for both ports during operation.

Translators, Level Shifters Selection Notes

Select this component when interfacing systems with widely varying voltage levels, such as 1.8 V to 5.5 V. It is suitable for applications requiring high drive strength and robust ESD protection. Consider the SON package size if board space is limited compared to SC70 or X2SON options.

Translators, Level Shifters Part Context

This part belongs to the SN74LXCH1T45 family of translating transceivers. It shares functional characteristics with other variants in the series but differs in physical packaging. The DRY suffix specifically denotes the small outline no-lead (SON) package configuration provided by Texas Instruments.

Translators, Level Shifters Replacement Considerations

SN74LXCH1T45DCKR (SC70 package)

Translators, Level Shifters FAQ

How does the DIR pin determine data flow?

A high level on the DIR pin allows data transmission from Port A to Port B, while a low level allows transmission from Port B to Port A.

What is the function of the bus-hold circuitry?

The bus-hold circuitry maintains the last state of the data inputs, eliminating the need for external pull-up or pull-down resistors.