Philips HEF4017BPB, HEF4017BP, HEF4017BDB, HEF4017BD, HEF4017BU Datasheet

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

HEF4017B MSI

5-stage Johnson counter

Product specification			January 1995
File under Integrated Circuits, IC04

Philips Semiconductors	Product specification

5-stage Johnson counter

HEF4017B

MSI

DESCRIPTION

The HEF4017B is a 5-stage Johnson decade counter with ten spike-free decoded active HIGH outputs (Oo to O9), an

A HIGH on MR resets the counter to zero

(Oo = O5-9 = HIGH; O1 to O9 = LOW) independent of the

clock inputs (CP0, CP1).

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 CP0 input of the next counter.

Automatic code correction of the counter is provided by an internal circuit: following any illegal code the counter returns to a proper counting mode within 11 clock pulses.

Schmitt-trigger action in the clock input makes the circuit highly tolerant to slower clock rise and fall times.

Fig.1 Functional diagram.

PINNING
	CP0			clock input (LOW to HIGH triggered)
				clock input (HIGH to LOW triggered)
	CP		1
	MR			master reset input
	O0 to O9			decoded outputs
				carry output (active LOW)
	O	5-9

FAMILY DATA, IDD LIMITS category MSI

Fig.2 Pinning diagram.

See Family Specifications

HEF4017BP(N): 16-lead DIL; plastic (SOT38-1)

HEF4017BD(F): 16-lead DIL; ceramic (cerdip) (SOT74)

HEF4017BT(D): 16-lead SO; plastic (SOT109-1)

( ): Package Designator North America

January 1995

2

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1995 January

3

Fig.3 Logic diagram.

counter Johnson stage-5

HEF4017B MSI

Semiconductors Philips

specification Product