CY2305/CY2309 Cypress Semiconductor Corp., CY2305/CY2309 Datasheet - Page 8

• Manufacturer Part Number: CY2305/CY2309
• Description: PLL Based Clock Distribution Device
• Manufacturer: Cypress Semiconductor Corp.

Document #: 38-07140 Rev. *C
Typical Duty Cycle
Notes:
8.
9.
60
58
56
54
52
50
48
46
44
42
40
60
58
56
54
52
50
48
46
44
42
40
140
120
100
80
60
40
20
Duty Cycle is taken from typical chip measured at 1.4V.
I
Voltage (V); f = frequency (Hz)).
0
DD
20
3
0
data is calculated from I
1
3.1
40
(for 30 pF Loads over Frequency - 3.3V, 25C)
(for 30 pF Loads over Frequency - 3.3V, 25C)
(for 30 pF Loads over Temperature - 3.3V)
2
IDD vs Number of Loaded Outputs
3.2
60
3
# of Loaded Outputs
Duty Cycle Vs Frequency
Frequency (MHz)
Duty Cycle Vs VDD
[8]
VDD (V)
4
3.3
DD
and I
80
= I
5
CORE
3.4
DD
6
100
+ nCVf, where I
Trends
7
3.5
120
8
3.6
[9]
9
CORE
140
for CY2305-1 and CY2309-1
is the unloaded current. (n = # of outputs; C = Capacitance load per output (F); V = Supply
33 MHz
66 MHz
100 MHz
33 MHz
66 MHz
100 MHz
-40C
0C
25C
70C
85C
60
58
56
54
52
50
48
46
44
42
40
60
58
56
54
52
50
48
46
44
42
40
140
120
100
80
60
40
20
3
0
20
0
1
3.1
40
(for 15 pF Loads over Frequency - 3.3V, 25C)
(for 15 pF Loads over Frequency - 3.3V, 25C)
(for 15 pF Loads over Temperature - 3.3V)
2
IDD vs Number of Loaded Outputs
3.2
60
3
# of Loaded Outputs
Duty Cycle Vs Frequency
Fre quency (MHz)
Duty Cycle Vs VDD
4
VDD (V)
3.3
80
5
3.4
6
100
7
3.5
120
8
9
3.6
140
CY2305
CY2309
Page 8 of 13
33 MHz
66 MHz
100 MHz
33 MHz
66 MHz
100 MHz
133 MHz
-40C
0C
25C
70C
85C