LE9540 Series

Dual Ch Ringing SLIC with Serial Interface

Catalog

Dual Ch Ringing SLIC with Serial Interface

Part	Package Width	Package Name	Package Length	Interface	Number of Circuits	Mounting Type	Function	Package / Case	Voltage - Supply
Microchip Technology LE9540DUQC	6 mm	40-QFN	6 mm	Serial	2	Surface Mount	Subscriber Line Interface Concept (SLIC)	40-VFQFN Exposed Pad	3.3 V
Microchip Technology LE9540DUQCT	6 mm	40-QFN	6 mm	Serial	2	Surface Mount	Subscriber Line Interface Concept (SLIC)	40-VFQFN Exposed Pad	3.3 V
Microchip Technology LE9540CUQCT		40-QFN		Serial	2	Surface Mount	Subscriber Line Interface Concept (SLIC)		3.3 V
Microchip Technology LE9540CUQC		40-QFN		Serial	2	Surface Mount	Subscriber Line Interface Concept (SLIC)		3.3 V

Catalog

Dual Ch Ringing SLIC with Serial Interface

Description

The Le9540 Dual Ringing SLIC device is a dual-channel device optimized to provide battery feed, ringing, and supervision on voice loops found in short-loop VoIP applications. This device is optimized with a serial bus to interface to the Broadcom BCM3383/84/85/90 cable SoCs and BCM6818/28/38 PON SoCs. The Le9540 device operates independently from a single, user-adjusted battery and a +3.3 V VCC per channel. Each channel provides forward and reverse battery feed, voice transmission, power ringing, an ultra low-power scan state, ground start (Tip open), and a disconnect state. A test load switch is also included to support integrated test algorithms.