DM74LS21 и другие
| Компонент | Описание | Производитель | |
| DM74LS20 | Dual 4-Input NAND Gate |
Fairchild Semiconductor |
 |
| DM74LS20M | Dual 4-Input NAND Gate |
Fairchild Semiconductor |
|
| DM74LS20M | Dual 4-Input NAND Gates |
National Semiconductor |
|
| DM74LS20MX | Dual 4-Input NAND Gate |
Fairchild Semiconductor |
|
| DM74LS20N | Dual 4-Input NAND Gates |
National Semiconductor |
|
| DM74LS20N | Dual 4-Input NAND Gate |
Fairchild Semiconductor |
|
| DM74LS21 | Dual 4-Input AND Gates |
National Semiconductor |
|
| DM74LS22 | DUAL 4-INPUT NAND GATE (WITH OPEN-COLLECTOR OUTPUT) |
National Semiconductor |
|
| DM74LS221 | Dual Non-Retriggerable One-Shot with Clear and Complementary Outputs |
National Semiconductor |
|
| DM74LS221 | Dual Non-Retriggerable One-Shot with Clear and Complementary Outputs |
Fairchild Semiconductor |
|