- 74HCT20
Dual 4-input NAND gate - 74HCT20D
Dual 4-input NAND gate - 74HCT20D-T
Dual 4-input NAND Gate - 74HCT20DB
Dual 4-input NAND gate - 74HCT20N
Dual 4-input NAND gate - 74HCT20U
Dual 4-input NAND gate - 74HCT21
Dual 4-input gate - 74HCT21D
Dual 4-input AND Gate - 74HCT21D-T
Dual 4-input AND Gate - 74HCT21DB
Dual 4-input AND gate - 74HCT21N
IC HIGH SPEED CMOS LOGIK N/DIP14 - 74HCT21NB
Dual 4-input AND gate - 74HCT21U
Dual 4-input AND gate - 74HCT221
Dual non-retriggerable monostable multivibrator with reset - 74HCT221D
Dual non-retriggerable monostable multivibrator with reset