HCF4585B_02 Datasheet, PDF (1/9 Pages) STMicroelectronics – 4-BIT MAGNITUDE COMPARATOR

HCF4585B
4-BIT MAGNITUDE COMPARATOR
s EXPANSION TO 8, 12, 16....4 N BITS BY
CASCADING UNIT
s MEDIUM SPEED OPERATION : COMPARES
TWO 4-BIT WORDS IN 180ns (Typ.) at 10V
s STANDARDIZED SYMMETRICAL OUTPUT
CHARACTERISTICS
s QUIESCENT CURRENT SPECIFIED UP TO
20V
s 5V, 10V AND 15V PARAMETRIC RATINGS
s INPUT LEAKAGE CURRENT
I_I = 100nA (MAX) AT V_DD = 18V T_A = 25°C
s 100% TESTED FOR QUIESCENT CURRENT
s MEETS ALL REQUIREMENTS OF JEDEC
JESD13B "STANDARD SPECIFICATIONS
FOR DESCRIPTION OF B SERIES CMOS
DEVICES"
DESCRIPTION
HCF4585B is a monolithic integrated circuit
fabricated in Metal Oxide Semiconductor
technology available in DIP and SOP packages.
HCF4585B is a 4-bit magnitude comparator
designed for use in computer and logic
applications that require the comparison of two
4-bit words. This logic circuit determines whether
one 4-bit word (Binary or BCD) is "less than",
"equal to" or "greater than" a second 4-bit word.
DIP
SOP
ORDER CODES
PACKAGE
TUBE
DIP
SOP
HCF4585BEY
HCF4585BM1
T&R
HCF4585M013TR
HCF4585B has eight comparing inputs (A3, B3
through A0, B0), three outputs (A<B, A=B, A>B)
and three cascading inputs (A<B, A=B, A>B) that
permit system designers to expand the
comparator function to 8, 12, 16...4N bits. When a
single HCF4585B is used, the cascading inputs
are connected as follows: (A<B) = low, (A=B) =
high, (A>B) = high. Cascading these units for
comparison of more than 4 bits is accomplished
as shown in Typical application.
PIN CONNECTION
October 2002
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