ZHCSN66D january 1998 – january 2021 CD54HC00 , CD74HC00
PRODUCTION DATA
The inputs and outputs to this device have both positive and negative clamping diodes as depicted in Electrical Placement of Clamping Diodes for Each Input and Output.
Voltages beyond the values specified in the Absolute Maximum Ratings table can cause damage to the device. The input and output voltage ratings may be exceeded if the input and output clamp-current ratings are observed.