SN74LXC2T45QDTTRQ1

Translators, Level Shifters Overview

The SN74LXC2T45QDTTRQ1 is an automotive-grade, dual-bit, non-inverting bidirectional voltage level translator manufactured by Texas Instruments. It features a fully configurable dual-rail design allowing each port to operate from 1.1 V to 5.5 V. The device supports data rates up to 420 Mbps for 3.3 V to 5.0 V translations and includes Schmitt-trigger inputs for noisy signal environments. It operates within a temperature range of -40°C to +125°C and is qualified under AEC-Q100 standards.

Translators, Level Shifters Feature Summary

• Fully configurable dual-rail architecture supporting independent supply voltages from 1.1 V to 5.5 V on both ports.
• Integrated Schmitt-trigger inputs effectively eliminate slow or noisy input signals during transmission.
• VCC isolation and Ioff-float features ensure high-impedance states if either supply drops below 100 mV or disconnects.
• Control logic (DIR) is referenced to VCCA, enabling flexible direction control for bidirectional data flow.

Translators, Level Shifters Applications

• Infotainment head units
• ADAS fusion systems
• Driving indicator LEDs or buzzers
• Debouncing mechanical switches

Translators, Level Shifters Procurement Notes

Verify the specific package variant against the orderable addendum in the datasheet, as the SN74LXC2T45-Q1 family utilizes multiple packages including VSSOP and SON. Confirm that the 'QDTTR' suffix corresponds to the required tape-and-reel configuration for automated assembly processes. Ensure the component meets the specific AEC-Q100 qualification requirements for your target automotive application segment.

Translators, Level Shifters Selection Notes

Select this component when interfacing between mixed-voltage domains requiring robust noise immunity due to its Schmitt-trigger inputs. It is suitable for applications needing high drive strength up to 32 mA at 5 V. Consider the low power consumption characteristics, with maximum supply currents of 6 µA across the full operating temperature range, for battery-sensitive designs.

Translators, Level Shifters Part Context

This part belongs to the SN74LXC2T45-Q1 series, designed specifically for automotive electronics. It provides a compact solution for translating signals between different voltage levels without external components. The device integrates dynamic pull-down resistors on I/Os and static pull-downs on control inputs to prevent floating lines.

Translators, Level Shifters Replacement Considerations

SN74LVC2T45QDCURQ1

Translators, Level Shifters FAQ

How does the device handle power sequencing?

The SN74LXC2T45QDTTRQ1 features robust, glitch-free power supply sequencing. If either VCC supply is disconnected or drops below 100 mV, all I/Os are pulled down and enter a high-impedance state.

What is the function of the DIR pin?

The DIR pin controls the direction of data transmission. A high level allows data transfer from Port A to Port B, while a low level allows transfer from Port B to Port A. This logic is referenced to VCCA.