HEF4017BP datasheet(8/8 Pages) PHILIPS

8 / 8 page

January 1995

8

Philips Semiconductors

Product speciﬁcation

5-stage Johnson counter

HEF4017B

MSI

APPLICATION INFORMATION

Some examples of applications for the HEF4017B are:

• Decade counter with decimal decoding

• 1 out of n decoding counter (when cascaded)

• Sequential controller

• Timer.

Figure 7 shows a technique for extending the number of decoded output states for the HEF4017B. Decoded outputs are

sequential within each stage and from stage to stage, with no dead time (except propagation delay).

Note

It is essential not to enable the counter on CP1 when CP0 is HIGH, or on CP0 when CP1 is LOW, as the this would cause

an extra count.

Fig.7 Counter expansion.

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