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CD74HC4518 Datasheet(Fiches technique) 4 Page - Texas Instruments

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Numéro de pièce CD74HC4518
Description  High Speed CMOS Logic Dual Synchronous Counters
Télécharger  8 Pages
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Fabricant  TI [Texas Instruments]
Site Internet  http://www.ti.com
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 4 page
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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
∆ICC
VCC
-2.1
-
4.5 to 5.5
-
100
360
-
450
-
490
µA
NOTE: For dual-supply systems theoretical worst case (VI = 2.4V, VCC = 5.5V) specification is 1.8mA.
DC Electrical Specifications (Continued)
PARAMETER
SYMBOL
TEST
CONDITIONS
VCC (V)
25oC
-40oCTO85oC
-55oC TO
125oC
UNITS
VI (V)
IO (mA)
MIN
TYP
MAX
MIN
MAX
MIN
MAX
HCT Input Loading Table
INPUT
UNIT LOADS
MR
1.2
CP
0.25
ENABLE
0.5
NOTE: Unit Load is
∆ICC limit specified in DC Electrical Table, e.g.,
360
µA max at 25oC.
Prerequisite for Switching Specifications
PARAMETER
SYMBOL
VCC (V)
25oC
-40oC TO 85oC
-55oC TO 125oC
UNITS
MIN
TYP
MAX
MIN
MAX
MIN
MAX
HC TYPES
Maximum Clock
Frequency
fMAX
2
6
-
-
5-4-
MHz
4.5
30
-
-
24
-
20
-
MHz
6
35
-
-
28
-
24
-
MHz
CP Pulse Width
tW
2
80
-
-
100
-
120
-
ns
4.5
16
-
-
20
-
24
-
ns
6
14-
-17-20
-
ns
MR Pulse Width
tW
2
100
-
-
125
-
150
-
ns
4.5
20
-
-
25
-
30
-
ns
6
17-
-21-26
-
ns
CD74HC4518, CD74HC4520, CD74HCT4520




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