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September 2002

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16 STAGE BINARY COUNTER

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LOW SYMMETR. OUTPUT RESISTANCE,

TYPICALLY 100

Ω at V

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OSCILLATOR FREQUENCY RANGE :

DC to 100KHz

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AUTO OR MASTER RESET DISABLES

OSCILLATOR DURING RESET TO REDUCE

POWER DISSIPATION

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OPERATES WITH VERY SLOW CLOCK

RISE AND FALL TIMES

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BUILT-IN LOW-POWER RC OSCILLATOR

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EXTERNAL CLOCK (applied to pin 3) CAN

BE USED INSTEAD OF OSCILLATOR

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OR AS A SINGLE-TRANSITION TIMER

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Q/Q SELECT PROVIDES OUTPUT LOGIC

LEVEL FLEXIBILITY

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CAPABLE OF DRIVING SIX LOW POWER

TTL LOADS, THREE LOW POWER

SCHOTTKY LOADS, OR SIX HTL LOADS

OVER THE RATED TEMP. RANGE

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5V, 10V AND 15V PARAMETRIC RATINGS

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100% TESTED FOR QUIESCENT CURRENT

AT 20V

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MEETS ALL REQUIREMENTS OF JEDEC

JESD13B " STANDARD SPECIFICATIONS

FOR DESCRIPTION OF B SERIES CMOS

DEVICES"

DESCRIPTION

The HCF4541B is a monolithic integrated circuit

fabricated

in

Metal

Oxide

Semiconductor

technology available in DIP and SOP packages.

This device is composed of a 16-stages binary

counter, an oscillator controlled by 2 external

resistors and a capacitor, an output control logic

and an automatic power-on reset circuit. The

counter varies on positive-edge clock transition

and it can be cleared by the MASTER RESET

input. The output from this timer is the Q or Q

output from the 8th, 13th, or 16th counter stage.

The choice of the stage depends on the time

HCF4541B

PROGRAMMABLE TIMER

PIN CONNECTION

ORDER CODES

PACKAGE

TUBE

T & R

DIP

HCF4541BEY

SOP

HCF4541BM1

HCF4541M013TR

DIP

SOP