The 74HC20; 74HCT20 is a dual 4-input NAND gate. Inputs include clamp diodes. This enables the use of current limiting resistors to interface inputs to voltages in excess of VCC.

Features

• Complies with JEDEC standard JESD7A
• Low-power dissipation
• Input levels For 74HC20: CMOS level
• ESD protection:
  HBM JESD22-A114F exceeds 2000 V
• MM JESD22-A115-A exceeds 200 V

74HC20 Datasheet

 Datasheet