Description
The FS7140 / FS7145 is a monolithic CMOS clock generator/regenerator IC designed to minimize cost and component count in a variety of electronic systems.
Via the I2Cbus interface, the FS714x can be adapted to many clock generation requirements.
The length of the reference and feedback dividers, their fine granularity, and the flexibility of the post divider make the FS714x the most flexible stand-alone phase-locked loop (PLL) clock generator available.

Features
* Extremely flexible and low-jitter phase-locked loop (PLL) frequency synthesis
* No external loop filter components needed
* 150MHz CMOS or 340MHz PECL outputs
* Completely configurable via I2C™-bus
* Up to four FS7140 or FS7145 can be used on a single I2C-bus
* 3.3V operation
* Independent on-chip crystal oscillator and external reference input
* Very low "cumulative" jitter

Applications
* Precision frequency synthesis
* Low-frequency clock multiplication
* Video line-locked clock generation
* Laser beam printers (FS7145)

13715-802-XTP
13715-201-XTP
13715-102-XTP
13715-202-XTP
13715-805-XTP
13715-806-XTP

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 The Intersil SLIC incorporates many of the BORSHT functions on a single IC chip. This includes DC battery feed, a ring relay driver, supervisory and hybrid functions. This device is designed to maintain transmission performance in the presence of externally induced longitudinal currents. Using the unique Intersil dielectric isolation process, the SLIC can operate directly with a wide range of station battery voltages.
 The SLIC also provides selective denial of power. If the PBX system becomes overloaded during an emergency, the SLIC will provide system protection by denying power to selected subscriber loops.
 The Intersil SLIC is ideally suited for the design of new digital PBX systems, by eliminating bulky hybrid transformers.

Features
•Capable of 12V or 5V (VB+) Operation
•Monolithic Integrated Device
•DI High Voltage Process
•Compatible With Worldwide PBX Performance Requirements
•Controlled Supply of Battery Feed Current for Short Loops (30mA)
•Internal Ring Relay Driver
•Low Power Consumption During Standby
•Switch Hook, Ground Key and Ring Trip Detection Functions
•Selective Denial of Power to Subscriber Loops

Applications
•Solid State Line Interface Circuit for Analog and Digital PBX Systems
•Direct Inward Dial (DID) Trunks
•Voice Messaging PBXs
•Related Literature
-AN549, The HC-5502S/4X Telephone Subscriber Line Interface Circuits (SLIC)
-AN571, Using Ring Sync with HC-5502A and HC-5504 SLICs

HC3-5502B HC3-5502B-5 HC4P5502B-5
TAG Feed, loop

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