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HEF4017B Datasheet 5-stage Johnson Counter

Manufacturer: Philips Semiconductors (now NXP Semiconductors)

Overview: INTEGRATED CIRCUITS DATA SHEET For a complete data sheet, please also download: • The IC04 LOCMOS HE4000B Logic Family Specifications HEF, HEC • The IC04 LOCMOS HE4000B Logic Package Outlines/Information HEF, HEC.

General Description

The HEF4017B is a 5-stage Johnson decade counter with ten spike-free decoded active HIGH outputs (Oo to O9), an active LOW output from the most significant flip-flop (O5-9), active HIGH and active LOW clock inputs (CP0, CP1) and an overriding asynchronous master reset input (MR).

The counter is advanced by either a LOW to HIGH transition at CP0 while CP1 is LOW or a HIGH to LOW transition at CP1 while CP0 is HIGH (see also function table).

When cascading counters, the O5-9 output, which is LOW while the counter is in states 5, 6, 7, 8 and 9, can be used to drive the

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