HD74LS221P и другие
| Компонент | Описание | Производитель | |
| HD74LS221 | Dual Monostable Multivibrators |
Renesas Technology Corp |
 |
| HD74LS221 | Dual Monostable Multivibrators |
Hitachi Semiconductor |
|
| HD74LS221 | Ouadruple 2-input Positive NAND Gates |
Hitachi Semiconductor |
|
| HD74LS221P | Dual Monostable Multivibrators |
Renesas Technology Corp |
|
| HD74LS221RPEL | Dual Monostable Multivibrators |
Renesas Technology Corp |
|