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74VHC4046

Fairchild Semiconductor
Part Number 74VHC4046
Manufacturer Fairchild Semiconductor
Description CMOS Phase Lock Loop
Published Mar 22, 2005
Detailed Description www.DataSheet4U.com 74VHC4046 CMOS Phase Lock Loop April 1994 Revised October 2003 74VHC4046 CMOS Phase Lock Loop Gen...
Datasheet PDF File 74VHC4046 PDF File

74VHC4046
74VHC4046

Overview
www.
DataSheet4U.
com 74VHC4046 CMOS Phase Lock Loop April 1994 Revised October 2003 74VHC4046 CMOS Phase Lock Loop General Description The VHC4046 is a low power phase lock loop utilizing advanced silicon-gate CMOS technology to obtain high frequency operation both in the phase comparator and VCO sections.
This device contains a low power linear voltage controlled oscillator (VCO), a source follower, and three phase comparators.
The three phase comparators have a common signal input and a common comparator input.
The signal input has a self biasing amplifier allowing signals to be either capacitively coupled to the phase comparators with a small signal or directly coupled with standard input logic levels.
This device is similar to the CD4046 except that the Zener diode of the metal gate CMOS device has been replaced with a third phase comparator.
Phase Comparator I is an exclusive OR (XOR) gate.
It provides a digital error signal that maintains a 90 phase shift between the VCO’s cent...


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