Download the L7557 datasheet PDF.
This datasheet also covers the L7556 variant, as both devices belong to the same low-power slics family and are provided as variant models within a single manufacturer datasheet.
Description
These electronic subscriber loop interface circuits (SLICs) are optimized for low power consumption while providing an extensive set of
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:.
L7557 Datasheet
