CY2300
Document #: 38-07252 Rev. *B
Page 2 of 7
Functional Description
The CY2300 is a 4-output 3.3V phase-aligned system clock
designed to distribute high-speed clocks in PC, workstation,
datacom, telecom, and other high-performance applications.
The part allows the user to obtain 1/2x, 1x, 1x and 2x REFIN
output frequencies on respective output pins.
The part has an on-chip PLL which locks to an input clock
presented on the REFIN pin. The input-to-output skew is guar-
anteed to be less than
±200 ps, and output-to-output skew is
guaranteed to be less than 200 ps.
Multiple CY2300 devices can accept the same input clock and
distribute it in a system. In this case, the skew between the
outputs of two devices is guaranteed to be less than 400 ps.
The CY2300 is available in commercial and industrial temper-
ature ranges.
Maximum Ratings
Supply Voltage to Ground Potential ...............–0.5V to +7.0V
DC Input Voltage (Except Ref) .............. –0.5V to VDD + 0.5V
DC Input Voltage REF ........................................... –0.5 to 7V
Storage Temperature ................................. –65°C to +150°C
Junction Temperature.................................................. 150°C
Static Discharge Voltage
(per MIL-STD-883, Method 3015) ............................. >2000V
Pin Definitions
Pin
Signal[1]
Description
1
1/2xREF
Clock output, 1/2x Reference
2
GND
Ground
3
REFIN
Input Reference frequency, 5V tolerant input
4REF
Clock output Reference
5
REF
Clock output Reference
6
2xREF
Clock output, 2x Reference
7
VDD
3.3V Supply
8
OE
Output Enable (weak pull-up)
Operating Conditions for CY2300SC Commercial Temperature Devices
Parameter
Description
Min.
Max.
Unit
VDD
Supply Voltage
3.0
3.6
V
TA
Operating Temperature (Ambient Temperature)
0
70
°C
CL
Load Capacitance, Fout < 133.33 MHz
18
pF
Load Capacitance,133.33 MHz < Fout < 166.67 MHz
12
pF
CIN
Input Capacitance
7
pF
tPU
Power-up time for all VDD's to reach minimum specified voltage
(power ramps must be monotonic)
0.05
50
ms
Electrical Characteristics for CY2300SC Commercial Temperature Devices
Parameter
Description
Min.
Max.
Unit
VIL
Input LOW Voltage
0.8
V
VIH
Input HIGH Voltage
2.0
V
IIL
Input LOW Current
VIN = 0V
100
µA
IIH
Input HIGH Current
VIN = VDD
50
µA
VOL
Output LOW Voltage[2]
IOL = 8 mA
0.4
V
VOH
Output HIGH Voltage[2]
IOH = –8 mA
2.4
V
IDD
Supply Current
Unloaded outputs, REFIN = 66 MHz
45
mA
Unloaded outputs, REFIN = 33 MHz
32
mA
Unloaded outputs, REFIN = 20 MHz
18
mA
Notes:
1.
Weak pull-down on all outputs.
2.
Parameter is guaranteed by design and characterization. It is not 100% tested in production.
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