74HC4049D

Overview

The 74HC4049D is a hex inverter manufactured by Toshiba Semiconductor and Storage, designed for high-to-low level shifting applications. It operates on a supply voltage range of 2V to 6V and features inputs with overvoltage tolerance up to 15V, allowing interface between different logic families. The device utilizes CMOS technology and provides push-pull outputs. Key electrical parameters include a typical propagation delay of 8ns at 6V and a maximum static current of 1µA. It is housed in a 16-SOIC package and supports an operating temperature range from -40°C to +125°C.

Feature Summary

• Provides six independent inverting channels for signal inversion and level translation.
• Features input overvoltage tolerance up to 15V, enabling safe interfacing with higher voltage logic systems.
• Delivers stable output performance through a three-stage internal inverter structure.
• Complies with RoHS standards and offers ESD protection exceeding 2000V HBM.

Applications

• Level conversion from high-voltage logic (e.g., 15V) to low-voltage CMOS systems.
• Battery backup circuit interfaces requiring voltage translation.
• General-purpose signal inversion in mixed-voltage digital designs.

Procurement Notes

Verify the specific manufacturer suffix and revision status before procurement, as the 74HC4049D is produced by multiple vendors including Nexperia, NXP, and Toshiba. Confirm that the selected variant matches the required operating temperature range and packaging type. Check for obsolescence notices, particularly for Toshiba-specific part numbers, as availability may vary significantly across suppliers. Ensure compliance with current environmental regulations such as RoHS3.

Selection Notes

Select this component when interfacing high-voltage logic sources with low-voltage CMOS destinations requires inversion. The 15V input tolerance makes it suitable for driving 5V or 3.3V systems from 12V or 15V sources. Consider the propagation delay specifications relative to system clock speeds. Verify that the SOIC-16 package fits the PCB layout constraints. Compare static power consumption requirements against other logic families if low power is critical.

Part Context

This device belongs to the 74HC series of high-speed CMOS logic integrated circuits. It is functionally compatible with similar hex inverters from other manufacturers but may differ in specific electrical characteristics and pinout tolerances. The 'D' suffix typically denotes the SOIC-16 surface-mount package. It serves as a bridge component in systems mixing older high-voltage logic standards with modern low-voltage microcontrollers.

Replacement Considerations

Direct substitutes include the MC74HC4049D from onsemi and variants from NXP or Nexperia. Verify pin compatibility and electrical parameter equivalence, specifically input voltage tolerance and propagation delay, before swapping manufacturers. Note that some equivalents may have different package options or temperature ranges.