The 74HC02; 74HCT02 is a quad 2-input NOR gate. Inputs include clamp diodes. This enables the
use of current limiting resistors to interface inputs to voltages in excess of VCC

Features:

• Wide supply voltage range from 2.0 V to 6.0 V
• CMOS low power dissipation
• High noise immunity
• Latch-up performance exceeds 100 mA per JESD 78 Class II Level B
• Input levels:
• For 74HC02: CMOS level
• For 74HCT02: TTL level
• Complies with JEDEC standards:
• JESD8C (2.7 V to 3.6 V)
• JESD7A (2.0 V to 6.0 V)
• ESD protection:
• HBM JESD22-A114F exceeds 2000 V
• MM JESD22-A115-A exceeds 200 V
• Multiple package options
• Specified from -40 °C to 85 °C and from -40 °C to 125 °C