74HC85DB,112 View Datasheet(PDF) - NXP Semiconductors.
Part Name
Description
Manufacturer
74HC85DB,112 Datasheet PDF : 19 Pages
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Nexperia
74HC85; 74HCT85
4-bit magnitude comparator
7 Functional description
Table 3. Function table
H = HIGH voltage level; L = LOW voltage level; X = don’t care.
Comparing inputs
Cascading inputs
A3, B3
A2, B2
A1, B1
A0, B0
IA>B
IA<B
IA=B
A3 > B3 X
X
X
X
X
X
A3 < B3 X
X
X
X
X
X
A3 = B3 A2 > B2 X
X
X
X
X
A3 = B3 A2 < B2 X
X
X
X
X
A3 = B3 A2 = B2 A1 > B1 X
X
X
X
A3 = B3 A2 = B2 A1 < B1 X
X
X
X
A3 = B3 A2 = B2 A1 = B1 A0 > B0 X
X
X
A3 = B3 A2 = B2 A1 = B1 A0 < B0 X
X
X
A3 = B3 A2 = B2 A1 = B1 A0 = B0 H
L
L
A3 = B3 A2 = B2 A1 = B1 A0 = B0 L
H
L
A3 = B3 A2 = B2 A1 = B1 A0 = B0 L
L
H
A3 = B3 A2 = B2 A1 = B1 A0 = B0 X
X
H
A3 = B3 A2 = B2 A1 = B1 A0 = B0 H
H
L
A3 = B3 A2 = B2 A1 = B1 A0 = B0 L
L
L
Outputs
QA>B
H
L
H
L
H
L
H
L
H
L
L
L
L
H
QA<B
L
H
L
H
L
H
L
H
L
H
L
L
L
H
QA=B
L
L
L
L
L
L
L
L
L
L
H
H
L
L
8 Limiting values
Table 4. Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V)
Symbol Parameter
Conditions
Min
Max Unit
VCC
IIK
IOK
IO
ICC
IGND
Tstg
Ptot
supply voltage
input clamping current
output clamping current
output current
supply current
ground current
storage temperature
total power dissipation
VI < -0.5 V or VI > VCC + 0.5 V
VO < -0.5 V or VO > VCC + 0.5 V
-0.5 V < VO < VCC + 0.5 V
Tamb = -40 °C to +125 °C
-0.5
[1]
-
[1]
-
-
-
-50
-65
[2]
-
+7
V
±20
mA
±20
mA
±25
mA
50
mA
-
mA
+150 °C
500
mW
[1] The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
[2] For SO16 Packages: Ptot derates linearly with 8 mW/K above 70 °C.
For (T)SSOP16 Packages: Ptot derates linearly with 5.5 mW/K above 60 °C.
74HC_HCT85
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 3 — 20 April 2018
© Nexperia B.V. 2018. All rights reserved.
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