HEF4522BF datasheet(9/10 Pages) PHILIPS

Part #	HEF4522BF

Description	Programmable 4-bit BCD down counter

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Manufacturer	PHILIPS [NXP Semiconductors]

Direct Link	http://www.nxp.com

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9 / 10 page

January 1995

9

Philips Semiconductors

Product speciﬁcation

Programmable 4-bit BCD down counter

HEF4522B

MSI

APPLICATION INFORMATION

Some examples of applications for the HEF4522B are:

• Divide-by-n counter

• Programmable frequency divider

Fig.7

Typical application of two HEF4522B circuits in a 2-stage programmable down counter (one cycle). S are

thumbwheel switches; when open: LOW state.

Counting cycle:

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