LUCL8574DP Datasheet and LUCL8574DP manual

Manufacturer : Agere 

Packing : PLCC 

Pins : 44 

Temperature : Min -40 °C | Max 85 °C

Size : 537 KB

Application : Resistive SLIC, ring relay, protector (SRP) for long loop and TR-57 applications 

LUCL8574DP PDF Download