
HCC/HCF4518B
HCC/HCF4520B
June1989
DUAL UP-COUNTERS
MEDIUM-SPEED OPERATION – 6MHz TYP.
CLOCKFREQUENCY AT 10V
.
POSITIVE - OR NEGATIVE - EDGE TRIGGER-
QUIESCENT CURRENT SPECIFIED TO 20V
FOR HCC DEVICE
.
5V, 10V, AND 15V PARAMETRIC RATINGS
.
INPUT CURRENTOF100nA AT18V AND 25
°
C
FOR HCC DEVICE
.
100% TESTEDFOR QUIESCENTCURRENT
.
MEETSALLREQUIREMENTSOFJEDECTEN-
TATIVESTANDARDN
°
13A,”STANDARDSPE-
CIFICATIONS FOR DESCRIPTION OF ”B”
SERIESCMOS DEVICES”
ING
.
SYNCHRONOUS INTERNAL CARRY PROPA-
GATION
DESCRIPTION
The
HCC4518B/4520B
(extended temperature
range) and
HCF4518B/4520B
(intermediate tem-
perature range) are monolithic integrated circuits,
available in 16-lead dual in-line plastic or ceramic
package
and
plastic
HCC/HCF4518B
Dual BCD Up Counter and
HCC/HCF4520B
DualBinaryUp Countereachcon-
sist 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 nega-
tive-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
inputofthesubsequent counterwhiletheclockinput
of the latter is held low.
micro
package.
The
HCC/HCF4518B
HCC/HCF4520B
DUAL BCD UP-COUNTER
DUAL BINARY UP-
COUNTER
EY
(Plastic Package)
F
(CeramicFritSeal Package)
C1
(Plastic Chip Carrier)
ORDERCODES :
HCC45XXBF
HCF45XXBEY
HCF45XXBM1
HCF45XXBC1
PIN CONNECTIONS
M1
(Micro Package)
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