HCF4585BC1 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

HCF4585BC1

4-BIT MAGNITUDE COMPARATOR

STMicroelectronics 

HCC/HCF4585B

4-BIT MAGNITUDE COMPARATOR

. EXPANSION TO 8, 12, 16 ... 4 N BITS BY CAS-

CADING UNITS

. MEDIUM-SPEED OPERATION : COMPARES

TWO 4-BIT WORDS IN 180ns (typ.) AT 10V

. STANDARDIZED SYMMETRICAL OUTPUT

CHARACTERISTICS

. 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 JEDECTEN-

TATIVE STANDARD N° 13A, ”STANDARD SPE-

CIFICATIONS FOR DESCRIPTION OF ”B”

SERIES CMOS DEVICES”

EY

F

(Plastic Package) (Ceramic Frit Seal Package)

M1

(Micro Package)

C1

(Plastic Chip Carrier)

ORDER CODES :

HCC4585BF

HCF4585BM1

HCF4585BEY

HCF4585BC1

PIN CONNECTIONS

DESCRIPTION

The HCC4585B (extended temperature range) and

HCF4585B (intermediate temperature range) are

monolithic integrated circuits, available in 16-lead

dual in-line plastic or ceramic package, and plastic

micro package. The HCC/HCF4585B is a 4-bit mag-

nitude 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. The

HCC/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 systems designers to expand the com-

parator function to 8, 12, 16 ... 4 N bits. When a

single HCC/HCF4585B is used, the cascading in-

puts 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.

June 1989

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