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HCF4018BEYSTN/a68avaiPRESETTABLE DIVIDE-BY-N COUNTER


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HCF4018BEY
PRESETTABLE DIVIDE-BY-N COUNTER
1/11September 2001 MEDIUM SPEED OPERATION 10 MHz (Typ.)
at VDD - VSS= 10V FULLY STATIC OPERATION STANDARDIZED SYMMETRICAL OUTPUT
CHARACTERISTICS QUIESCENT CURRENT SPECIFIED UP TO
20V 5V, 10V AND 15V PARAMETRIC RATINGS INPUT LEAKAGE CURRENT
II = 100nA (MAX) AT VDD = 18V TA = 25°C 100% TESTED FOR QUIESCENT CURRENT MEETS ALL REQUIREMENTS OF JEDEC
JESD13B " STANDARD SPECIFICATIONS
FOR DESCRIPTION OF B SERIES CMOS
DEVICES"
DESCRIPTION

The HCF4018B is a monolithic integrated circuit
fabricated in Metal Oxide Semiconductor
technology available in DIP and SOP packages.
The HCF4018B consist of 5 Johnson counter
stages, buffered Q outputs from each stage, and
counter preset control gating. CLOCK, RESET,
DATA, PRESET ENABLE, and 5 individual JAM
inputs are provided. Divide by 10, 8, 6, 4 or 2
counter configuration can be implemented by
feeding the Q5, Q4, Q3, Q2, Q1 signals,
respectively, back to the data input.
Divide-by-9, 7, 5, or 3 counter configurations can
be implemented by the use of a HCF4011B gate
package to properly gate the feedback connection
to the DATA input. Divide-by-functions greater
than 10 can be achieved by use of multiple
HCF4018B units. The counter is advanced one
count at the positive clock signalstransition.
Schmitt trigger action on the clock line permits
unlimited clock rise and fall times. A high RESET
signal clears the counter to an all-zero condition. A
high PRESENT-ENABLE signal allows
information on the JAM inputs to preset the
counter.
Anti-lock gating is provided to assure the proper
counting sequence.
HCF4018B

PRESETTABLE DIVIDE-BY-N COUNTER
PIN CONNECTION
ORDER CODES
HCF4018B
2/11
INPUT EQUIVALENT CIRCUIT PIN DESCRIPTION
FUNCTIONAL DIAGRAM
HCF4018B
3/11
LOGIC DIAGRAM
TIMING CHART
HCF4018B
4/11
ABSOLUTE MAXIMUM RATINGS

Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is
not implied.
All voltage values are referred to VSS pin voltage.
RECOMMENDED OPERATING CONDITIONS
HCF4018B
5/11
DC SPECIFICATIONS

The Noise Margin for both "1" and "0" level is: 1V min. with VDD=5V, 2V min. with VDD=10V, 2.5V min. with VDD=15V
HCF4018B
6/11
DYNAMIC ELECTRICAL CHARACTERISTICS (T
amb = 25°C, CL = 50pF, RL = 200KΩ, tr = tf = 20 ns)
(*) Typical temperature coefficient for all VDD value is 0.3 %/°C.
(1) At PRESET ENABLE or JAM inputs
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