The MM54HC280 MM74HC280 utilizes advanced silicongate CMOS technology to achieve the high noise immunity and low power consumption of standard CMOS integrated circuits It possesses the ability to drive 10 LS-TTL loads This parity generator checker features odd even outputs to facilitate operation of either odd or even parity applications The word length capability is easily expanded by cascading devices The 54HC 74HC logic family is speed function and pinout compatible with the standard 54LS 74LS family All inputs are protected from damage due to static discharge by internal diode clamps to VCC and ground