SN74HC05NS

Overview

The SN74HC05NS is a hex inverter integrated circuit manufactured by Texas Instruments, belonging to the 74HC series of high-speed CMOS logic devices. It features six independent inverters with open-drain outputs housed in a 14-pin Small Outline Integrated Circuit (SOIC) package. The device operates within a supply voltage range of 2V to 6V and supports an operating temperature range from -40°C to +85°C. Key electrical characteristics include a maximum static current of 2µA and output drive capabilities of 5.2mA at both high and low states. Propagation delay is specified at 20ns under conditions of 6V supply and 50pF load capacitance.

Feature Summary

• Hex inverter configuration providing six independent signal inversion channels within a single package.
• Open-drain output architecture allowing for wired-AND connections and flexible interfacing with various logic families.
• High-speed CMOS technology ensuring fast switching speeds while maintaining low power consumption.
• Robust electrostatic discharge protection on all inputs to enhance component reliability during handling.

Applications

• General-purpose digital signal inversion in microcontroller-based systems.
• Clock signal generation and conditioning circuits requiring open-drain topology.
• Interface adapters between different voltage domains or logic families.
• Pull-up resistor applications in bus line termination scenarios.

Procurement Notes

Verify the specific suffix 'N' confirms the standard plastic small-outline package variant when sourcing. Confirm RoHS compliance status as per the latest manufacturer documentation, noting that environmental markings may vary across production batches. Ensure the supplier provides valid traceability data for quality assurance purposes. Cross-reference the full part number against official Texas Instruments databases to distinguish it from similar variants with different thermal or mechanical specifications.

Selection Notes

Select this component when a hex inverter with open-drain outputs is required for CMOS logic applications. It is suitable for designs needing moderate speed performance with low static power dissipation. Consider the SOIC package dimensions for PCB layout constraints. Evaluate the 2V to 6V supply range compatibility with the system's power rails. Verify that the open-drain nature aligns with the downstream circuit requirements for pull-up resistors.

Part Context

This device is part of the broader 74HC family of high-speed CMOS logic ICs produced by Texas Instruments. The 74HC series is widely recognized for its compatibility with standard TTL logic levels while offering improved noise immunity and lower power consumption compared to older NMOS technologies. The SN74HC05 specifically addresses applications requiring multiple inverted signals with open-drain flexibility, serving as a fundamental building block in digital logic design.

Replacement Considerations

Direct replacements include other manufacturers' equivalents such as the CD74HC05M or MC74HC05AFR2G, provided pinouts and electrical characteristics match. Verify package compatibility and voltage ratings before substitution. Check for any differences in propagation delay or output drive strength that might impact timing-critical designs.