Product status link M54HCxxx, M54HCTxxx M54HCxxx,.
CD54HC4049 - High-Speed CMOS Logic
M54HC4049 - Rad-hard high speed 2V to 6V CMOS logic
MC54HC4049 - (MC54HC4049 / MC54HC4050) Hex Buffers/Logic-Level Down Converters
54HC4049 - Rad-hard high speed 2 to 6V CMOS logic
MC54HC4050 - (MC54HC4049 / MC54HC4050) Hex Buffers/Logic-Level Down Converters