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HCC4520B Datasheet

  • HCC4520B

  • STMicroelectronics [DUAL UP-COUNTERS]

  • STMICROELECTRONICS   STMICROELECTRONICS

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HCC/HCF4518B
HCC/HCF4520B
DUAL UP-COUNTERS
HCC/HCF4518B DUAL BCD UP-COUNTER
HCC/HCF4520B DUAL BINARY UP-
COUNTER
MEDIUM-SPEED OPERATION 鈥?6MHz TYP.
CLOCK FREQUENCY AT 10V
POSITIVE - OR NEGATIVE - EDGE TRIGGER-
ING
SYNCHRONOUS INTERNAL CARRY PROPA-
GATION
QUIESCENT CURRENT SPECIFIED TO 20V
FOR HCC DEVICE
5V, 10V, AND 15V PARAMETRIC RATINGS
INPUT CURRENT OF 100nA AT 18V AND 25擄C
FOR HCC DEVICE
100% TESTED FOR QUIESCENT CURRENT
MEETS ALL REQUIREMENTS OF JEDEC TEN-
TATIVE STANDARD N擄 13A, 鈥漇TANDARD SPE-
CIFICATIONS FOR DESCRIPTION OF 鈥滲鈥?/div>
SERIES CMOS DEVICES鈥?/div>
.
.
.
.
.
.
.
.
EY
(Plastic Package)
F
(Ceramic Frit Seal Package)
M1
(Micro Package)
C1
(Plastic Chip Carrier)
ORDER CODES :
HCC45XXBF
HCF45XXBM1
HCF45XXBEY
HCF45XXBC1
PIN CONNECTIONS
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 micro package. The
HCC/HCF4518B
Dual BCD Up Counter and
HCC/HCF4520B
Dual Binary Up Counter each con-
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 鈥漢igh鈥?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
1/14

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