AM79489A-3JC

0110CVF BF1, Subscriber Line Interface Circuit, PLCC-32

DISTINCTIVE CHARACTERISTICS
Ideal for low power sensitive applications
Low standby power (normal and reverse)
Automatic on-chip battery switching
On-chip thermal management
On-chip thermal shutdown
–20 V to –60 V battery operation
Programmable current limit
Programmable resistive feed
Programmable loop-detect threshold

Selectable overhead for metering applications
Two-wire impedance set by single external
impedance
On-chip ring and test relay drivers and relay
snubber circuits
Polarity reversal (full transmission)
Loop and ground-key detector
Comparator for ring-trip detection
Ground-start capability
On-hook transmission

dokumentacja: http://www.wolumen53.com/pdf/AM79489.pdf