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Model 643H

Very Low Jitter HCSL Clock

DOC# 008-0582-0 Rev. C

Page 2 of 7

Electrical Specifications

Operating Conditions

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNIT

Maximum Supply Voltage

-

-0.3

-

4.0

V

2.375

2.5

2.625

3.135

3.3

3.465

Supply Current

Maximum Load

Maximum Current Value @ +3.3V

-

-

60

mA

-20

+70

-40

+85

-40

+105

Storage Temperature

-

-50

-

+125

°C

Frequency Stability

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNIT

Frequency Range

-

MHz

Frequency Stability

[Note 1]

-

±ppm

Aging

-5

±3

5

ppm

Output Parameters

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNIT

Output Type

-

-

-

Output Load

Terminated to ground

-

50

-

Ohms

-580

-

850

-150

-

150

Output Duty Cycle

SYM

45

-

55

%

Differential Output Voltage

0.4

-

-

Vp-p

Rise and Fall Time

-

0.50

0.70

ns

Output Parameters

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNIT

Start Up Time

-

5

10

ms

Enable Function [Standby]

Enable Input Voltage

Pin 1 Logic '1', Output Enabled

-

-

V

Disable Input Voltage

Pin 1 Logic '0', Output Disabled

-

-

V

Disable Current

Pin 1 Logic '0', Output Disabled

-

15

-

µA

Enable Time

Pin 1 Logic '1', Output Enabled

-

-

2

ms

Phase Jitter, RMS

tjrms

Bandwidth 12 kHz - 20 MHz

-

500

-

fs

V

Supply Voltage

±5%

°C

Operating Temperature

-

+25

13.5 - 156.25

25, 30, 50 or 100

1.] Inclusive of initial tolerance at time of shipment, changes in supply voltage, load, temperature and 1st year aging.

HCSL

Output Voltage Levels

HCSL Load

mV