HCF4518B
DUAL BCD UP COUNTER
s
s
s
s
s
s
s
s
MEDIUM SPEED OPERATION :
6MHz (Typ.) at 10V
POSITIVE -OR NEGATIVE- EDGE
TRIGGERING
SYNCHRONOUS INTERNAL CARRY
PROPAGATION
QUIESCENT CURRENT SPECIF. UP TO 20V
5V, 10V AND 15V PARAMETRIC RATINGS
INPUT LEAKAGE CURRENT
I
I
= 100nA (MAX) AT V
DD
= 18V T
A
= 25°C
100% TESTED FOR QUIESCENT CURRENT
MEETS ALL REQUIREMENTS OF JEDEC
JESD13B "STANDARD SPECIFICATIONS
FOR DESCRIPTION OF B SERIES CMOS
DEVICES"
DIP
SOP
ORDER CODES
PACKAGE
DIP
SOP
TUBE
HCF4518BEY
HCF4518BM1
DESCRIPTION
HCF4518B is a monolithic integrated circuit
fabricated in Metal Oxide Semiconductor
technology available in DIP and SOP packages.
HCF4518B Dual BCD Up Counter consists of two
identical, internal 4 stage counters. The counter
stages
are
D-type
Flip-Flops
having
interchangeable Clock and Enable lines for
PIN CONNECTION
O
so
b
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ro
P
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so
b
-O
incrementing on either the positive-going or
negative going transitions. For single-unit
operations 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.
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T&R
October 2002
1/11
HCF4518B
ABSOLUTE MAXIMUM RATINGS
Symbol
V
DD
V
I
I
I
P
D
T
op
T
stg
Supply Voltage
DC Input Voltage
DC Input Current
Power Dissipation per Package
Power Dissipation per Output Transistor
Operating Temperature
Storage Temperature
Parameter
Value
-0.5 to +22
-0.5 to V
DD
+ 0.5
±
10
200
100
-55 to +125
-65 to +150
Unit
V
V
mA
mW
mW
°C
°C
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 V
SS
pin voltage.
RECOMMENDED OPERATING CONDITIONS
Symbol
V
DD
V
I
T
op
Supply Voltage
Input Voltage
Operating Temperature
Parameter
Value
3 to 20
0 to V
DD
O
so
b
te
le
ro
P
uc
d
s)
t(
so
b
-O
P
te
le
od
r
-55 to 125
s)
t(
uc
Unit
V
V
°C
4/11
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