4017B View Datasheet(PDF) - Philips Electronics

Part Name

Description

View to exact match

4017B

5-stage Johnson counter

Philips Electronics 

Philips Semiconductors

5-stage Johnson counter

Product specification

HEF4017B

MSI

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 CP0 input of the next counter.

A HIGH on MR resets the counter to zero

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

clock inputs (CP0, CP1).

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.

Fig.2 Pinning diagram.

PINNING

CP0

CP1

MR

O0 to O9

O5-9

clock input (LOW to HIGH triggered)

clock input (HIGH to LOW triggered)

master reset input

decoded outputs

carry output (active LOW)

FAMILY DATA, IDD LIMITS category MSI

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

Share Link: