7427 Triple 3-input NOR gate IC

Output capability: standard
ICC category: SSI
GND = 0 V; Tamb = 25 °C; tr = tf = 6 ns
For HC the condition is VI = GND to VCC For HCT the condition is VI = GND to VCC − 1.5 V

The 74HC/HCT27 are high-speed Si-gate CMOS devices and are pin compatible with low power Schottky TTL (LSTTL). They are specified in compliance with JEDEC standard no. 7A. The 74HC/HCT27 provide the 3-input NOR function.