| 5420 | National Semiconductor | Dual 4-Input NAND Gate |
| 54AC20 | National Semiconductor | Dual 4-Input NAND Gate |
| 54F20 | National Semiconductor | Dual 4-Input NAND Gate |
| 74ABT20 | Philips Semiconductors | Dual 4-input NAND gate |
| CD4012B | Texas Instruments | CMOS Dual 4-Input NAND Gate |
| CD54ACT20 | Texas Instruments | Dual 4-Input NAND Gates |
| CD54HC20 | Texas Instruments | High Speed CMOS Logic Dual 4-Input NAND Gates |
| CD54HCT20 | Texas Instruments | High Speed CMOS Logic Dual 4-Input NAND Gates |
| CD74AC20 | Texas Instruments | Dual 4-Input NAND Gates |
| CD74ACT20 | Texas Instruments | Dual 4-Input NAND Gates |
| CD74HC20 | Texas Instruments | High Speed CMOS Logic Dual 4-Input NAND Gates |
| CD74HCT20 | Texas Instruments | High Speed CMOS Logic Dual 4-Input NAND Gates |
| DM5420 | National Semiconductor | Dual 4-Input NAND Gate |
| DM54LS20 | National Semiconductor | Dual 4-Input NAND Gate [Life-time buy] |
| HCTS20MS | Intersil | NAND-Gate, 4-Input, TTL Inputs, Dual, Rad-Hard, High-Speed, CMOS, Logic |