CD74HCT4046AEG4

PLL:	Yes
Input:	CMOS
Output:	CMOS
Number of Circuits:	1
Ratio - Input:Output:	1:4
Differential - Input:Output:	No/No
Frequency - Max:	38MHz
Divider/Multiplier:	No/No
Voltage - Supply:	4.5 V ~ 5.5 V
Operating Temperature:	-55°C ~ 125°C
Mounting Type:	Through Hole
Package / Case:	16-DIP (0.300", 7.62mm)
Supplier Device Package:	16-PDIP
Base Part Number:	74HCT4046
Series:	74HCT
Packaging:	Tube
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Type:	Phase Lock Loop (PLL)

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Introduction

The CD74HCT4046AEG4 is a high performance programmable clock generator primarily designed for ease of use in calculator, display, and other LCD display applications. It provides a high degree of flexibility in the design of controllers and clock generators. The four independent internal clock generators are designed to produce a variety of different clock frequencies and pulse widths, while combining low power consumption in a single chip.The CD74HCT4046AEG4 is based on an advanced dual-phase design that allows for more efficient use of the clock signals and more control over the logic used in the design. With the ability to select from a variety of different clock frequencies, the CD74HCT4046AEG4 offers flexibility for different types of applications. Additionally, features such as adjustable and synchronous outputs, power-on reset, and logic high and logic low outputs allow for simple and efficient circuit design.

Applications

The CD74HCT4046AEG4 is ideally suited for applications where the user requires a large number of different clock pulses, along with low power consumption. For example, the chip can be used as a clock generator in a calculator, display, or other LCD display device. With the chip, designers canadjust and synchronize the clock pulses while taking advantage of low power consumption, offering greater flexibility and efficiency in their designs.The chip can also be used in a wide range of electronic clocks and timers. The adjustable and synchronous output settings, combined with low power consumption, make the device ideal for a variety of projects. The chip can be used to generate timing signals for the production of both digital and analog clock devices such as alarm clocks, LED clocks and watches.

Working Principle

The CD74HCT4046AEG4 features four independent clock generators, each capable of producing a variety of different clock frequencies and pulse width settings. Each clock generator has two inputs, which allow the user to program the pulse width and frequency. The pulse width is controlled by a resistive divider, while the frequency is controlled by an internal counter.The clock generators are arranged in two different blocks, one for the low frequency (LF) clocks and one for the high frequency (HF) clocks. The LF block is used for clock pulses in the range of 40kHz to 3200kHz, while the HF block is used for clock pulses up to 25MHz. A common set of power on reset (POR) and logic high/low outputs are also provided.

Conclusion

The CD74HCT4046AEG4 is a versatile and highly flexible programmable clock generator designed specifically for applications such as LCD displays, calculators, clocks and timers. The chip offers high levels of flexibility, allowing the user to generate various clock frequencies and pulse widths with low power consumption. The adjustable and synchronous output settings make the device suitable for an array of designs, while the two different blocks for LF and HF clock pulses provide for further flexibility in the design.

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