AM79M574 Datasheet - Legerity

AM79M574 Metering Subscriber Line Interface Circuit

Am79M574 Subscriber Line Interface Circuit Valid Combinations Valid Combinations Am79M574 *1 *2 JC Valid Combinations list configurations planned to be supported in volume for this device. Consult the local Legerity sales office to confirm availability of specific valid combinations.

www.DataSheet4U.com Am79M574 Metering Subscriber Line Interface Circuit DISTINCTIVE CHARACTERISTICS Programmable constant-resistance feed Programmable loop-detect threshold Ground-key detect Performs polarity reversal Line-feed characteristics independent of battery variations Test relay driver optional Supports 2.2 Vrms metering (12 and 16 kHz) On-chip switching regulator for low-power dissipation Two-wire impedance set by single external impedance Tip Open state for .

AM79M574 Features

* olarity

* 40°C to +85°C reverse polarity

* 2

* 1

* 63 58 54 58 54 54 40 42 25 18 dB Longitudinal signal generation 4-L Longitudinal current capability per wire 300 Hz to 800 Hz 300 Hz to 800 Hz Active state

AM79M574_Legerity.pdf