MK2011

Fast Ethernet Clock Source

MDS 2011 B

3

Revision 120597

Printed 11/15/00

MicroClock Division of ICS•1271 Parkmoor Ave.•San Jose•CA•95126•(408)295-9800tel•(408)295-9818fax

I C R O

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.

Electrical Specifications

Parameter

Conditions

Minimum

Typical

Maximum

Units

ABSOLUTE MAXIMUM RATINGS (note 1)

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 20 seconds

260

°C

Storage temperature

-65

150

°C

DC CHARACTERISTICS (at 5.0V unless otherwise noted)

DC CHARACTERISTICS (at 5.0V unless otherwise noted)

DC CHARACTERISTICS (at 5.0V unless otherwise noted)

Operating Voltage, VDD

4.5

5.5

V

Input High Voltage, VIH, input clock only

Clock input

3.5

2.5

V

Input Low Voltage, VIL, input clock only

Clock input

2.5

1.5

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

19

mA

Operating Supply Current, IDD, 3.3V

No Load

10

mA

Input Capacitance

7

pF

Actual Mean Frequency versus Target

With exact crystal

0

ppm

AC CHARACTERISTICS

Input Clock or Crystal Frequency

20.0000

MHz

Input Crystal Accuracy

50

ppm

Input Clock Duty Cycle, 20.000MHz

Time above 2.5V

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

45

50

55

%

Absolute Clock Period Jitter, 20 MHz output

-400

250

400

ps

Absolute Clock Period Jitter, 50, 25 MHz clocks

-300

150

300

ps

One Sigma Clock Period Jitter

All outputs

70

ps