SN74AVCH1T45DCKT

Translators, Level Shifters Overview

The SN74AVCH1T45DCKT is a single-bit, non-inverting bus transceiver from Texas Instruments' SN74AVC family. It utilizes two independent, configurable power supply rails (VCCA and VCCB) to facilitate bidirectional voltage level translation between logic domains operating at different voltages. The device supports VCCA and VCCB ranges from 1.2V to 3.6V, enabling conversion between common low-voltage nodes such as 1.2V, 1.5V, 1.8V, 2.5V, and 3.3V. It features a Direction (DIR) control input to manage data flow direction and includes an Ioff circuit for partial power-down applications, ensuring outputs are disabled when the device is powered off to prevent back-driving.

Translators, Level Shifters Feature Summary

• Dual-supply architecture with independent configurable power rails for flexible voltage translation
• Directional control input manages bidirectional data transfer between A and B ports
• Integrated Ioff circuit disables outputs during partial power-down to prevent excessive current draw

Translators, Level Shifters Applications

• Asynchronous communication interfaces between microprocessors and peripherals operating at different logic levels
• Voltage bridging in portable battery-powered devices requiring multiple voltage domains
• System-level interconnects where mixed-voltage signal integrity is required

Translators, Level Shifters Procurement Notes

Verify the specific suffix 'DCKT' corresponds to the SC-70 package and tape-and-reel quantity specified by the manufacturer. Confirm RoHS compliance status and lead times directly with authorized distributors or Texas Instruments, as these details are subject to change based on production schedules and regional availability.

Translators, Level Shifters Selection Notes

Select this component when a single-channel bidirectional translator is needed between 1.2V and 3.6V domains. Ensure the DIR pin is driven by a voltage compatible with VCCA. Consider the SN74AVC2T45 if dual channels are required, or the SN74AVC1T45 if the lower 1.08V minimum voltage operation is necessary for specific low-power applications.

Translators, Level Shifters Part Context

This part belongs to the SN74AVC series of advanced CMOS technology bus transceivers designed for low-voltage applications. The SN74AVCH1T45 variant specifically targets high-speed, low-power systems requiring reliable level shifting. It is part of a broader family including dual-channel and automotive-grade variants, offering scalable solutions for complex multi-voltage system architectures.

Translators, Level Shifters Replacement Considerations

The SN74AVC1T45 serves as a functional alternative with extended low-voltage support down to 1.08V. For dual-channel requirements, the SN74AVC2T45 provides equivalent functionality in a single package. Verify pinout compatibility and electrical specifications before substitution.