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L8574D

Agere Systems
Part Number L8574D
Manufacturer Agere Systems
Description Resistive SLIC / Ring Relay and Protector
Published Aug 3, 2018
Detailed Description Data Sheet October 1998 L8574D Resistive Subscriber Line Interface Circuit (SLIC), Ring Relay, and Protector (SRP) for ...
Datasheet PDF File L8574D PDF File

L8574D
L8574D

Overview
Data Sheet October 1998 L8574D Resistive Subscriber Line Interface Circuit (SLIC), Ring Relay, and Protector (SRP) for Long Loop and TR-57 Applications Features s Low-power scan mode for low on-hook power dissipation (55 mW max) s Low active power dissipation; talk or on-hook transmission (240 mW max) s Distortion-free on-hook transmission s Eight operating states via latched paralleled data inputs with channel select feature s Precision fixed 28 mA current limiter s Integrated protection s No external protection device required s Integrated ringing access relay s Ring trip detector s Loop closure detector with hysteresis s Relay driver s Battery noise cancellation s Thermal protection s 44-pin, surface-mount, plastic package (PLCC) Description The L8574 is a resistive subscriber line interface circuit (SLIC) that is optimized for long loop applications, such as Bellcore TR-NWT-000057 requirements for digital loop carrier (DLC) applications.
It interfaces the low-voltage circuits on...


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