INTEGRATED CIRCUITS
DATA SHEET
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The IC04 LOCMOS HE4000B Logic
Family Specifications HEF, HEC
The IC04 LOCMOS HE4000B Logic
Package Outlines/Information HEF, HEC
HEF4585B
MSI
4-bit magnitude comparator
January 1995
Product specication
File under Integrated Circuits, IC04Philips Semiconductors Product specication
HEF4585B
4-bit magnitude comparator
MSI
DESCRIPTION For proper compare operation the expander inputs to the
least significant position must be connected as follows:
The HEF4585B is a 4-bit magnitude comparator which
I =I = HIGH, I = LOW. For words greater than
A=B A > B A < B
compares two 4-bit words (A and B), whether they are less
4-bits, units can be cascaded by connecting outputs
than, equal to, or greater than. Each word has four
O and O to the corresponding inputs of the next
A<B A=B
parallel inputs (A to A and B to B ); A and B being the
0 3 0 3 3 3
significant comparator (input I is connected to a
A>B
most significant inputs. Three outputs are provided;
HIGH).
A greater than B (O ), A less than B (O ) and
A > B A < B
Operation is not restricted to binary codes, the devices will
A equal to B (O ). Three expander inputs (I ,
A=B A > B
work with any monotonic code. The function table
I and I ) allow cascading of the devices without
A < B A=B
external gates. describes the operation of the device under all possible
logic conditions.
Fig.2 Pinning diagram.
HEF4585BP(N): 16-lead DIL; plastic (SOT38-1)
HEF4585BD(F): 16-lead DIL; ceramic (cerdip) (SOT74)
HEF4585BT(D): 16-lead SO; plastic (SOT109-1)
( ): Package Designator North America
PINNING
A to A word A parallel inputs
0 3
Fig.1 Functional diagram.
B to B word B parallel inputs
0 3
I , I , I expander inputs
A > B A < B A=B
O A greater than B output
A>B
O A less than B output
A<B
O A equal to B output
A=B
FAMILY DATA, I LIMITS category MSI
DD
See Family Specications
January 1995 2