HD74LS280
9-bit Odd/Even Parity Generators/Checkers (Hitachi Semiconductor)
HD74LS280
9-bit Odd / Even Parity Generator/Checker (Renesas)
HD74LS283
4-bit Binary Full Adders (Hitachi Semiconductor)
HD74LS283
4-bit Binary Full Adder (Renesas)
HD74LS283P
4-bit Binary Full Adder (Renesas)
HD74LS20
Dual 4-input Positive NAND Gates (Hitachi Semiconductor)
HD74LS20
Dual 4-input Positive NAND Gates (Renesas)
HD74LS20P
Dual 4-input Positive NAND Gates (Renesas)
HD74LS21
Dual 4-input Positive AND Gates (Hitachi Semiconductor)
HD74LS21
Dual 4-input Positive AND Gates (Renesas)