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October 2002

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SEPARATE CLOCK-UP AND CLOCK-DOWN

LINES

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CAPABLE OF DRIVING COMMON

CATHODE LEDS AND OTHER DISPLAYS

DIRECTLY

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ALLOWS CASCADING WITHOUT ANY

EXTERNAL CIRCUITRY

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MAXIMUM INPUT CURRENT OF 1 µA AT 18

V (full package-temperature range)

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QUIESCENT CURRENT SPECIFIED UP TO

20V

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STANDARDIZED, SYMMETRICAL OUTPUT

CHARACTERISTCS

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5V, 10V AND 15V PARAMETRIC RATINGS

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INPUT LEAKAGE CURRENT

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100% TESTED FOR QUIESCENT CURRENT

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MEETS ALL REQUIREMENTS OF JEDEC

JESD13B "STANDARD SPECIFICATIONS

FOR DESCRIPTION OF B SERIES CMOS

DEVICES"

DESCRIPTION

HCF40110B is a monolithic integrated circuit

fabricated

in

Metal

Oxide

Semiconductor

technology available in DIP package.

HCF40110B is a dual-clocked up/down counter

with a special preconditioning circuit that allows

the counter to be clocked, via positive going

inputs, up or down regardless of the states or

timing (within 100 ns typ.) of the other clock line.

The clock signal is fed into the control logic and

Johnson counter after it is preconditioned. The

outputs of the Johnson counter (which include

anti-lock gating to avoid being locked at an illegal

state) are fed into a latch. This data can be fed

directly to the decoder through the latch or can be

strobed to hold a particular count while the

Johnson counter continues to be clocked. The

decoder feeds a seven-segment bipolar output

driver which can source up to 25mA to drive LEDs

and

other

displays

such

as

low-voltage

fluorescent and incandescent lamps. A short

duration negative-going pulse appears on the

BORROW output when the count changes from 0

HCF40110B

DECADE UP/DOWN COUNTER/DECODER/LATCH/DRIVER

PIN CONNECTION

ORDER CODES

PACKAGE

TUBE

T & R

DIP

HCF40110BEY

DIP