- 74HC20
Dual 4-input NAND gate - 74HC20D
Dual 4-input NAND gate - 74HC20D-T
Dual 4-input NAND Gate - 74HC20DB
Dual 4-input NAND gate - 74HC20N
Dual 4-input NAND gate - 74HC21
Dual 4-input gate - 74HC21D
Dual 4-input AND Gate - 74HC21D-T
Dual 4-input AND Gate - 74HC21DB
Dual 4-input gate - 74HC21N
IC TTL CMOS HIGH SPEED N/DIP14 - 74HC21NB
Dual 4-input AND gate - 74HC21U
Dual 4-input AND gate - 74HC221
Dual non-retriggerable monostable multivibrator with reset - 74HC221D
Dual non-retriggerable monostable multivibrator with reset - 74HC221D-T
Monostable Multivibrator