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CD74HC85 Datasheet(PDF) 4 Page - Texas Instruments

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Part No. CD74HC85
Description  High Speed CMOS Logic 4-Bit Magnitude Comparator
Download  8 Pages
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

CD74HC85 Datasheet(HTML) 4 Page - Texas Instruments

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4
HCT TYPES
High Level Input
Voltage
VIH
-
-
4.5 to
5.5
2-
-
2
-
2
-
V
Low Level Input
Voltage
VIL
-
-
4.5 to
5.5
-
-
0.8
-
0.8
-
0.8
V
High Level Output
Voltage
CMOS Loads
VOH
VIH or VIL
-0.02
4.5
4.4
-
-
4.4
-
4.4
-
V
High Level Output
Voltage
TTL Loads
-4
4.5
3.98
-
-
3.84
-
3.7
-
V
Low Level Output
Voltage
CMOS Loads
VOL
VIH or VIL
0.02
4.5
-
-
0.1
-
0.1
-
0.1
V
Low Level Output
Voltage
TTL Loads
4
4.5
-
-
0.26
-
0.33
-
0.4
V
Input Leakage
Current
II
VCC and
GND
0
5.5
-
±0.1
-
±1-
±1
µA
Quiescent Device
Current
ICC
VCC or
GND
0
5.5
-
-
8
-
80
-
160
µA
Additional Quiescent
Device Current Per
Input Pin: 1 Unit Load
(Note)
∆ICC
VCC
-2.1
-
4.5 to
5.5
-
100
360
-
450
-
490
µA
NOTE: For dual-supply systems theorectical worst case (VI = 2.4V, VCC = 5.5V) specification is 1.8mA.
DC Electrical Specifications (Continued)
PARAMETER
SYMBOL
TEST
CONDITIONS
VCC
(V)
25oC
-40oC TO 85oC -55oC TO 125oC
UNITS
VI (V)
IO (mA)
MIN
TYP
MAX
MIN
MAX
MIN
MAX
HCT Input Loading Table
INPUT
UNIT LOADS
A0-A3, B0-B3 and (A = B) IN
1.5
(A > B) IN, (A < B) IN
1
NOTE: Unit Load is
∆ICC limit specified in DC Electrical Table, e.g.
360
µA max at 25oC.
Switching Specifications Input tr, tf = 6ns
PARAMETER
SYMBOL
TEST
CONDITIONS
VCC (V)
25oC
-40oC TO
85oC
-55oC TO
125oC
UNITS
MIN
TYP
MAX
MIN
MAX
MIN
MAX
HC TYPES
Propagation Delay,
An, Bn to (A > B) OUT,
(A < B) OUT
tPLH, tPHL CL = 50pF
2
-
-
195
-
245
-
295
ns
4.5
-
-
39
-
47
-
59
ns
CL = 15pF
5
-
16
-
-
-
-
-
ns
CL = 50pF
6
-
-
33
-
42
-
50
ns
An, Bn to (A = B) OUT
tPLH, tPHL CL = 50pF
2
-
-
175
-
240
-
265
ns
4.5
-
-
35
-
44
-
53
ns
CL = 15pF
5
-
14
-
-
-
-
-
ns
CL = 50pF
6
-
-
30
-
37
-
45
ns
CD74HC85, CD74HCT85


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