74LVC4T3144PW-Q10J

Overview

The Nexperia 74LVC4T3144PW-Q10J is a 4-bit dual-supply level translating buffer with 3-state outputs, qualified to AEC-Q100 Grade 1. It features VCC(A) and VCC(B) supply voltage ranges of 1.2 V to 5.5 V. The device translates three inputs from VCC(A) to VCC(B) and one input from VCC(B) to VCC(A). It supports maximum data rates up to 200 Mbps at 3.3 V to 5.0 V translation. Operating temperatures range from -40 °C to +125 °C in the TSSOP14 package.

Feature Summary

• Automotive qualification compliant with AEC-Q100 Grade 1 standards for reliable operation in vehicle environments.
• Integrated IOFF circuitry enables partial power-down mode by disabling outputs to prevent damaging backflow current.
• Suspend mode automatically forces all outputs to a high-impedance OFF-state when either supply rail is at GND level.
• High noise immunity and robust latch-up performance exceeding 100 mA per JESD 78B Class II specifications.

Applications

• Unidirectional logic level-shifting between systems operating at different voltage domains
• Partial power-down applications requiring isolation during power loss or suspend states
• Automotive electronic systems demanding AEC-Q100 Grade 1 component reliability

Procurement Notes

Verify the specific ordering suffix matches the required temperature range and package variant. Confirm that the Q100 designation aligns with automotive qualification requirements for your target application. Ensure compatibility with the TSSOP14 footprint and pinout configuration during PCB layout review.

Selection Notes

Select this component when interfacing digital signals between two independent power domains requiring unidirectional translation. The asymmetric pin configuration allows three channels to translate from port A to B and one channel from B to A. Verify that the required data rate and supply voltage combinations fall within the specified dynamic characteristic limits.

Part Context

This part belongs to the Nexperia 74LVC family of low-voltage CMOS logic devices. The 74LVC4T3144 series provides dual-supply buffering capabilities specifically designed for mixed-voltage system architectures. The Q100 suffix indicates automotive-grade manufacturing and testing protocols distinct from standard commercial variants.

Replacement Considerations

Direct substitutes include the non-automotive 74LVC4T3144PW and other 74LVC4T3144 variants within the same family. Verify functional equivalence regarding the asymmetric input/output mapping and 3-state control logic before substitution.

FAQ

How does the device handle power-down conditions on one supply rail?

The integrated IOFF circuitry disables the outputs to prevent damaging backflow current. If either VCC(A) or VCC(B) drops to GND, the device enters suspend mode and all outputs assume a high-impedance state.

What is the specific input/output configuration for the four bits?

Three inputs (A1, A2, A3) translate from VCC(A) to VCC(B), while one input (B4) translates from VCC(B) to VCC(A). The corresponding outputs follow these respective voltage references.