SN74HC05DR

Overview

The SN74HC05DR 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, designed for surface-mount applications in SOIC-14 packages. The device operates within a supply voltage range of 2V to 6V and supports a wide operating temperature range from -55°C to 125°C. Key electrical characteristics include a maximum static current of 1 µA and output drive capabilities of up to 5.2 mA. Propagation delay is specified at 15 ns under standard test conditions.

Feature Summary

• Hex inverter configuration with open-drain outputs suitable for wired-AND connections
• High-speed CMOS technology ensuring low power consumption and noise immunity
• Wide operating voltage range compatible with various digital logic systems

Applications

• General-purpose digital signal inversion in embedded systems
• Open-drain bus interfacing requiring pull-up resistors
• Level shifting between different voltage domains in mixed-signal circuits

Procurement Notes

Verify the manufacturer marking and date code on received components to confirm authenticity, as this part may be sourced from third-party distributors. Ensure the package matches the SOIC-14 specification and check for any physical damage to pins before soldering. Confirm RoHS compliance status if required by your manufacturing standards, and validate that the supplier provides traceable documentation for quality assurance purposes.

Selection Notes

Select this component when open-drain output functionality is required for multiple channels in a compact surface-mount package. It is suitable for designs needing high noise immunity and low static power consumption across a wide temperature range. Consider alternative parts if push-pull outputs or higher current drive capabilities are necessary for the specific application requirements.

Part Context

This device is part of the widely adopted 74HC logic family, known for compatibility with TTL inputs while offering CMOS performance. The SN74HC05 variant specifically provides open-drain outputs, distinguishing it from standard push-pull inverters like the SN74HC04. It serves as a fundamental building block in digital logic design, often used in microcontroller interfaces and memory addressing circuits.

Replacement Considerations

Direct substitutes include SN74HC05DRG4 from Texas Instruments. Other compatible options may involve checking equivalent parts from STMicroelectronics or NXP, provided they match the pinout, electrical specifications, and package dimensions exactly.