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74HC85DB Datasheet(PDF) 4 Page - NXP Semiconductors

Part # 74HC85DB
Description  4-bit magnitude comparator
PDF  9 Pages
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Manufacturer  PHILIPS [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

74HC85DB Datasheet(HTML) 4 Page - NXP Semiconductors

  74HC85DB Datasheet HTML 1Page - NXP Semiconductors 74HC85DB Datasheet HTML 2Page - NXP Semiconductors 74HC85DB Datasheet HTML 3Page - NXP Semiconductors 74HC85DB Datasheet HTML 4Page - NXP Semiconductors 74HC85DB Datasheet HTML 5Page - NXP Semiconductors 74HC85DB Datasheet HTML 6Page - NXP Semiconductors 74HC85DB Datasheet HTML 7Page - NXP Semiconductors 74HC85DB Datasheet HTML 8Page - NXP Semiconductors 74HC85DB Datasheet HTML 9Page - NXP Semiconductors  
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December 1990
4
Philips Semiconductors
Product specification
4-bit magnitude comparator
74HC/HCT85
APPLICATIONS
• Process controllers
• Servo-motor control
FUNCTION TABLE
Notes
1. H = HIGH voltage level
L = LOW voltage level
X = don’t care
COMPARING INPUTS
CASCADING INPUTS
OUTPUTS
A3, B3
A2, B2
A1, B1
A0, B0
IA>B
IA<B
IA=B
QA>B
QA<B
QA=B
A3>B3
A3<B3
A3=B3
A3=B3
X
X
A2>B2
A2<B2
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
H
L
H
L
L
H
L
H
L
L
L
L
A3=B3
A3=B3
A3=B3
A3=B3
A2=B2
A2=B2
A2=B2
A2=B2
A1>B1
A1<B1
A1=B1
A1=B1
X
X
A0>B0
A0<B0
X
X
X
X
X
X
X
X
X
X
X
X
H
L
H
L
L
H
L
H
L
L
L
L
A3=B3
A3=B3
A3=B3
A2=B2
A2=B2
A2=B2
A1=B1
A1=B1
A1=B1
A0=B0
A0=B0
A0=B0
H
L
L
L
H
L
L
L
H
H
L
L
L
H
L
L
L
H
A3=B3
A3=B3
A3=B3
A2=B2
A2=B2
A2=B2
A1=B1
A1=B1
A1=B1
A0=B0
A0=B0
A0=B0
X
H
L
X
H
L
H
L
L
L
L
H
L
L
H
H
L
L
Fig.4 Functional diagram.



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