The MC74HC05A contains six inverters with open drain outputs. The MC74HC05A is identical to the MC74HC04A, except for the open drain outputs. The outputs can be connected to other open drain outputs to implement active LOW wired−OR or active High wired−AND logic functions. The open drain outputs require pull−up resistors to perform correctly.

FEATUREs
• Output Drive Capability: 10 LSTTL Loads with Suitable Pull−up Resistor
• Outputs Directly Interface to CMOS, NMOS and TTL
• High Noise Immunity Characteristic of CMOS Devices
• Operating Voltage Range: 2.0 to 6.0 V
• Low Input Current: 1 A
• In Compliance With the JEDEC Standard No. 7A Requirements
• Chip Complexity: 36 FETs or 9 Equivalent Gates
• These are Pb−Free Devices