TC74HCU04AP/AF/AFT is a high-speed CMOS inverter that uses CMOS technology and has features such as low power consumption and high-speed operation. It can achieve high-speed operation comparable to LSTTL with the advantages of CMOS technology. The internal circuit has a simple one-gate configuration, making it suitable for applications such as crystal oscillators. In addition, diodes are added to protect the device from electrostatic discharge for all inputs.