54F280
9-Bit Parity Generator/Checker (National Semiconductor)
54F283
4-Bit Binary Full Adder (National Semiconductor)
54F283
4-Bit Binary Full Adders (Texas Instruments)
54F20
Dual 4-Input NAND Gate (National Semiconductor)
54F20
DUAL 4-INPUT POSITIVE-NAND GATES (Texas Instruments)
54F219
64-Bit Random Access Memory (National Semiconductor)
54F2244
Octal Buffer/Line Driver (National Semiconductor)
54F240
Octal Buffers/Line Drivers (National Semiconductor)
54F241
Octal Buffers/Line Drivers (Texas Instruments)
54F241
Octal Buffers/Line Drivers (National Semiconductor)