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L7557 |
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| Part Number | L7557 |
| Manufacturer | Lucent Technologies |
| Description | These electronic subscriber loop interface circuits (SLICs) are optimized for low power consumption while providing an extensive set of features. The SLICs include an auxiliary battery input and a b... |
| Features |
s Auxiliary input for second battery, and internal switch to enable its use to save power
s Low active power (typical 125 mW during on-hook transmission)
s Supports meter pulse injection
s Spare op amp for meter pulse filtering
s –16 V to –60 V power supply operation s Distortion-free on-hook transmission s Convenient operating states: — Forward powerup — Disconnect (high impedance) — 2-wire wink (zero loop voltage) s Adjustable supervision functions: — Off-hook detector with longitudinal rejection — Ground key detector — Ring trip detector s Independent, adjustable, dc and ac parameters: — dc... |
| Document |
 L7557 Data Sheet
PDF 487.35KB |
| No. | Parte # | Fabricante | Descripción | Hoja de Datos |
|---|---|---|---|---|
| 1 | L7554 |
Lucent Technologies |
Low-Power SLIC |
|
| 2 | L7556 |
Lucent Technologies |
Low-Power SLICs |
|
| 3 | L7581 |
Lucent Technologies |
Ringing Access Switch |
|
| 4 | L7582 |
Legerity |
Tip Ring Access Switch |
|
| 5 | L7582 |
Lucent Technologies |
Tip Ring Access Switch |
|
| 6 | L7583A |
Lucent Technologies |
Line Card Access Switch |
|
Desde 2024. D4U Semiconductor.
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