NE521DG и другие
| Компонент | Описание | Производитель | |
| NE521D | High−Speed Dual−Differential Comparator/Sense Amp |
ON Semiconductor |
 |
| NE521D | High-speed dual-differential comparator/sense amp |
NXP Semiconductors |
|
| NE521DG | High−Speed Dual−Differential Comparator/Sense Amp |
ON Semiconductor |
|
| NE521DR2 | High−Speed Dual−Differential Comparator/Sense Amp |
ON Semiconductor |
|
| NE521DR2G | High−Speed Dual−Differential Comparator/Sense Amp |
ON Semiconductor |
|