| Компонент | Описание | Производитель | |
| HC4P5504B-5 | EIA/ITU PABX SLIC with 40mA Loop Feed |
Intersil Corporation |
|
| HC4P5504B-9 | EIA/ITU PABX SLIC with 40mA Loop Feed |
Intersil Corporation |
|
| HC4P5504B1- | ITU Low Cost, PABX SLIC With 40mA Loop Feed |
Intersil Corporation |