74HC00 Datasheet, NXP

* Input levels:
* For 74HC00: CMOS level
* For 74HCT00: TTL level
* Complies with JEDEC standard no. 7A
* ESD protection:
* HBM JESD22-A114F excee.

The 74HC00; 74HCT00 is a quad 2-input NAND gate. Inputs include clamp diodes. This enables the use of current limiting resistors to interface inputs to voltages in excess of VCC. 2. Features and benefits
* Input levels:
* For 74HC00: CMOS le.