HCF4585B_02 Datasheet, PDF (2/9 Pages) STMicroelectronics – 4-BIT MAGNITUDE COMPARATOR

HCF4585B
IINPUT EQUIVALENT CIRCUIT
PIN DESCRIPTION
PIN No
10, 7, 2, 15
11, 9, 1, 14
13, 3, 12
4, 6, 5
8
16
SYMBOL
A0 to A3
B0 to B3
A>B, A=B,
A<B
A>B, A=B,
A<B
V_SS
V_DD
NAME AND FUNCTION
Word A Inputs
Word B Inputs
Outputs
Cascading Inputs
Negative Supply Voltage
Positive Supply Voltage
TRUTH TABLE
A3, B3
A3 > B3
A3 = B3
A3 = B3
A3 = B3
A3 = B3
A3 = B3
A3 = B3
A3 = B3
A3 = B3
A3 = B3
A3 < B3
X : Don’t Care
INPUTS
COMPARING
A2, B2
X
A2 > B2
A2 = B2
A2 = B2
A2 = B2
A2 = B2
A2 = B2
A2 = B2
A2 = B2
A2 < B2
X
A1, B1
X
X
A1 > B1
A1 = B1
A1 = B1
A1 = B1
A1 = B1
A1 = B1
A1 < B1
X
X
A0, B0
X
X
X
A0 > B0
A0 = B0
A0 = B0
A0 = B0
A0 < B0
X
X
X
FUNCTIONAL DIAGRAM
CASCADING
A<B
X
X
X
X
L
L
H
X
X
X
X
A=B
X
X
X
X
L
H
L
X
X
X
X
A>B
H
H
H
H
H
X
X
X
X
X
X
OUTPUTS
A<B
L
L
L
L
L
L
H
H
H
H
H
A=B
L
L
L
L
L
H
L
L
L
L
L
A>B
H
H
H
H
H
L
L
L
L
L
L
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