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LE79M576A

Legerity
Part Number LE79M576A
Manufacturer Legerity
Description Metering Subscriber Line Interface Circuit
Published Mar 6, 2008
Detailed Description www.DataSheet4U.com Le79M576A Metering Subscriber Line Interface Circuit DISTINCTIVE CHARACTERISTICS I Programmable con...
Datasheet PDF File LE79M576A PDF File

LE79M576A
LE79M576A

Overview
www.
DataSheet4U.
com Le79M576A Metering Subscriber Line Interface Circuit DISTINCTIVE CHARACTERISTICS I Programmable constant-resistance feed I Programmable loop-detect threshold I Ground-key detect I Performs polarity reversal I Ring relay driver I Supports 2.
2 Vrms metering (12 and 16 kHz) I Line feed characteristics independent of battery variations I On-chip switching regulator for low-power dissipation I Two-wire impedance set by single external impedance I Tip Open state for ground-start lines I On-hook transmission BLOCK DIAGRAM A(TIP) Ring Relay Driver Ground-Key Detector Input Decoder and Control VCCRING RINGOUT/DGND C1 C2 C3 E0 E1 HPB Two-Wire Interface DET Signal Transmission VTX RSN HPA B(RING) Off-Hook Detector RD Power-Feed Controller RDC DA DB VREG L VBAT BGND Ring-Trip Detector Switching Regulator CHS QBAT CHCLK VCC VEE AGND/DGND Document ID# 080140 Date: Jun 19, 2002 Rev: E Version: 1 Distribution: Public Document www.
DataSheet4U.
com ORDERING INFORMATION Standard Products Legerity standard products are available in several packages and operating ranges.
The order number (Valid Combination) is formed by a combination of the elements below.
Le79M576A* J C TEMPERATURE RANGE C = Commercial (0° C to 70° C)* PACKAGE TYPE J = 32-pin Plastic Leaded Chip Carrier (PL 032) PERFORMANCE GRADE Blank = Standard Specification –1 = Performance Grading –2 = Performance Grading DEVICE NUMBER/DESCRIPTION Le79M576A Metering Subscriber Line Interface Circuit Valid Combinations Valid Combinations –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, to check on newly released combinations, and to obtain additional data on Legerity’s products.
Le79M576A* *Legerity reserves the right to fulfill all orders for this device with parts marked with the "Am" part number prefix, until such time as all inventory bearing t...


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