SN74LXCH1T45DCKR

Translators, Level Shifters Overview

The SN74LXCH1T45DCKR is a single-bit, dual-supply, non-inverting bidirectional voltage level translator with bus-hold inputs and 3-state outputs. It operates within a supply voltage range of 1.1 V to 5.5 V for both ports (VCCA and VCCB). The device supports data rates up to 420 Mbps when translating between 3.3 V and 5.0 V. It features Schmitt-trigger control inputs, integrated static pull-down resistors on the direction pin, and high drive strength up to 32 mA at 5 V. Operating temperature ranges from -40°C to +125°C.

Translators, Level Shifters Feature Summary

• Fully configurable dual-rail design allows independent voltage operation for each port
• Bus-hold circuitry on data inputs eliminates the need for external pull-up or pull-down resistors
• Schmitt-trigger control inputs enable reliable handling of slow or noisy signals
• Integrated static pull-down resistors on the DIR pin support floating control input states

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 specific ordering suffix DCKR corresponds to the SC-70 package variant required for your layout. Confirm RoHS compliance status and check for any recent Product Change Notifications that may affect marking or assembly details. Ensure the selected component matches the exact voltage and thermal requirements of your target application environment.

Translators, Level Shifters Selection Notes

Select this component when interfacing systems with widely varying voltage levels, as it supports 1.1 V to 5.5 V on both ports. The inclusion of bus-hold functionality simplifies board design by removing external resistors. Consider the high drive strength if driving capacitive loads or long traces. Verify that the control logic reference to VCCA aligns with your system's power sequencing strategy.

Translators, Level Shifters Part Context

This part belongs to the SN74LXCH1T45 family of single-bit dual-supply bus transceivers. It is designed for applications requiring robust voltage translation between disparate logic families. The device integrates features like glitch-free power sequencing and partial-power-down mode support, making it suitable for complex embedded systems where power management and signal integrity are critical.

Translators, Level Shifters Replacement Considerations

Check for direct substitutes within the same family, such as other package variants like SN74LXCH1T45DRY or SN74LXCH1T45DTQ. Ensure any replacement maintains the same 6-pin configuration and electrical characteristics, particularly the 1.1 V to 5.5 V operating range and bus-hold functionality.