ICS650-40 Datasheet, PDF (4/6 Pages) Integrated Circuit Systems – ETHERNET SWITCH CLOCK SOURCE

ICS650-40
ETHERNET SWITCH CLOCK SOURCE
DC Electrical Characteristics
Unless otherwise specified, VDD=3.3 V ±5%, Ambient Temperature 0 to +70°C
Parameter
Symbol Conditions
Min.
Typ.
Operating Voltage
VDD
3.15
Output Operating Voltage
VDDOA,B
2.375
Input High Voltage, ICLK
Input Low Voltage, ICLK
Input High Voltage, S1:S0:OE
Input Low Voltage, S1:S0:OE
Output High Voltage
Output Low Voltage
Operating Supply Current
V_IH Note 1
V_IL Note 1
V_IH
V_IL
V_OH I_OH = -12 mA
V_OL I_OL = 12 mA
IDD No load
VDD/2+0.5
2
2
40
IDD at Output Disable
No load
16
Condition(OE low)
Short Circuit Current
I_OS Each output
±35
Internal Pull-up Resistor
R_PUP OE pin
250
Internal Pull-down Resistor
R_PD CLK outputs
525
Max. Units
3.45
V
3.45
V
V
VDD/2-0.5 V
VDD
V
0.4
V
V
0.4
V
mA
mA
mA
kΩ
kΩ
Note: 1. Nominal switching threshold is VDD/2.
AC Electrical Characteristics
, VDD = 3.3 V ±5%, VDDO = 2.5 - 3.3 V ±5%, C_L=10 pF Ambient Temperature 0 to +70° C
Parameter
Symbol
Conditions
Min. Typ. Max.
Input Frequency
25
Output Rise Time
Output Fall Time
Output Clock Duty Cycle
t_OR 20% to 80% of VDD
t_OF 80% to 20% of VDD
at VDD/2
1.6
1.6
40 49-51 60
Frequency Error
all clocks
0
Output to Output Skew
250
between clocks of the same
frequency
Absolute Jitter, Short-term P-P
variation from mean
±100 ±200
Absolute Jitter, Short-term C-C
200 400
Long-term Jitter
1000 clock cycles
250 400
Units
MHz
ns
ns
%
ppm
ps
ps
ps
ps
MDS 650-40 C
4
Revision 060705
Integrated Circuit Systems ● 525 Race Street, San Jose, CA 95126 ● tel [phone] ● www.icst.com