HEC4040 데이터 시트보기 (PDF) - Philips Electronics

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HEC4040

12-stage binary counter

Philips Electronics 

Philips Semiconductors

12-stage binary counter

DESCRIPTION

The HEF4040B is a 12-stage binary ripple counter with a

clock input (CP), an overriding asynchronous master reset

input (MR) and twelve fully buffered outputs (O0 to O11).

The counter advances on the HIGH to LOW transition of

CP. A HIGH on MR clears all counter stages and forces all

outputs LOW, independent of CP. Each counter stage is a

static toggle flip-flop. Schmitt-trigger action in the clock

input makes the circuit highly tolerant to slower clock rise

and fall times.

Product specification

HEF4040B

MSI

Fig.1 Functional diagram.

Fig.2 Pinning diagram.

HEF4040BP(N): 16-lead DIL; plastic

(SOT38-1)

HEF4040BD(F): 16-lead DIL; ceramic (cerdip)

(SOT74)

HEF4040BT(D): 16-lead SO; plastic

(SOT109-1)

( ): Package Designator North America

PINNING

CP

MR

O0 to O11

clock input (HIGH to LOW edge-triggered)

master reset input (active HIGH)

parallel outputs

APPLICATION INFORMATION

Some examples of applications for the HEF4040B are:

• Frequency dividing circuits

• Time delay circuits

• Control counters

FAMILY DATA, IDD LIMITS category MSI

See Family Specifications

January 1995

2

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