HCC/HCF4518B
HCC/HCF4520B
DUAL UP-COUNTERS
HCC/HCF4518B DUAL BCD UP-COUNTER
HCC/HCF4520B DUAL BINARY UPCOUNTER
MEDIUM-SPEED OPERATION – 6MHz TYP.
CLOCK FREQUENCY AT 10V
POSITIVE - OR NEGATIVE - EDGE TRIGGERING
SYNCHRONOUS INTERNAL CARRY PROPAGATION
QUIESCENT CURRENT SPECIFIED TO 20V
FOR HCC DEVICE
5V, 10V, AND 15V PARAMETRIC RATINGS
INPUT CURRENT OF 100nA AT 18V AND 25°C
FOR HCC DEVICE
100% TESTED FOR QUIESCENT CURRENT
MEETS ALL REQUIREMENTS OF JEDEC TENTATIVE STANDARD N° 13A, ”STANDARD SPECIFICATIONS FOR DESCRIPTION OF ”B”
SERIES CMOS DEVICES”
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EY
(Plastic Package)
M1
(Micro Package)
F
(Ceramic Frit Seal Package)
C1
(Plastic Chip Carrier)
ORDER CODES :
HCC45XXBF
HCF45XXBM1
HCF45XXBEY
HCF45XXBC1
PIN CONNECTIONS
DESCRIPTION
The HCC4518B/4520B (extended temperature
range) and HCF4518B/4520B (intermediate temperature range) are monolithic integrated circuits,
available in 16-lead dual in-line plastic or ceramic
package and plastic micro package. The
HCC/HCF4518B Dual BCD Up Counter and
HCC/HCF4520B Dual Binary Up Counter each consist of two identical, internally synchronous 4-stage
counters. The counter stages are D-type flip-flops
having interchangeable Clock and Enable lines for
incrementing on either the positive-going or negative-going transition. For single-unit operation the
Enable input is maintained ”high” and the counter
advances on each positive-going transition of the
Clock. The counters are cleared by high levels on
their Reset lines. The counter can be cascaded in
the ripple mode by connecting Q4 to the enable
input of the subsequent counter while the clock input
of the latter is held low.
June 1989
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