MK1409
Peripheral Clock Synthesizer
MDS1409B
3
Revision 10016
Printed 10/31/97
MicroClock Incorporated1171 North Fourth St.San JoseCA95112(408)295-9800tel(408)295-9818fax
PRELIMINARY INFORMATION
Notes:
1. Stresses beyond those listed under Absolute Maximum Ratings could cause permanent damage to the device. Prolonged exposure
to levels above the operating limits but below the Absolute Maximums may affect device reliability.
2. Typical values are at 25°C.
3. See the selection table on page two for allowable input clock ranges. For a high input clock, VDD can only be 5V.
Electrical Specifications
Parameter
Conditions
Minimum
Typical
Maximum
Units
ABSOLUTE MAXIMUM RATINGS (note 1)
Supply Voltage, VDD
Referenced to GND
7
V
Inputs
Referenced to GND
-0.5
VDD+.5V
V
Clock Outputs
Referenced to GND
-0.5
VDD+.5V
V
Ambient Operating Temperature
0
70
°C
Soldering Temperature
Max of 10 seconds
260
°C
Storage temperature
-65
150
°C
DC CHARACTERISTICS (at 5.0V unless otherwise noted)
Operating Voltage, VDD
Note 3
3
5.5
V
Input High Voltage, VIH, input clock only
Clock input
(VDD/2)+1
VDD/2
V
Input Low Voltage, VIL, input clock only
Clock input
VDD/2
(VDD/2)-1
V
Output High Voltage, VOH
IOH=-4mA
VDD-0.4
V
Output High Voltage, VOH
IOH=-25mA
2.4
V
Output Low Voltage, VOL
IOL=25mA
0.4
V
Operating Supply Current, IDD, 5V
No Load
20
mA
Operating Supply Current, IDD, 3.3V
No Load
12
mA
Input Capacitance
S0, S1 pins
7
pF
Actual Mean Frequency versus Target
With exact clock
25
ppm
AC CHARACTERISTICS (at 5.0V unless otherwise noted)
Input Clock Frequency
Note 3
5
14.31818
28
MHz
Input Crystal Accuracy
50
ppm
Input Clock Duty Cycle
Time above UDD/2
20
80
%
Output Clock Rise Time
0.8 to 2.0V
1.5
ns
Output Clock Fall Time
2.0 to 0.8V
1.5
ns
Output Clock Duty Cycle
Time above 1.5V
40
50
60
%
Absolute Clock Period Jitter
200
ps
One Sigma Clock Period Jitter
70
ps