AC Characteristics

PARAMETER

SYMBOL

MIN

TYP

MAX

UNITS

NOTES

CLK and CLK TIMING

Duty Cycle

40

60

%

3, 4, 9

Frequency Error

0.5

%

Rise Time

2ns

5, 9

Fall Time

2ns

5, 9

VCO Frequency

20

180

MHz

1

PLL Acquire Time

500

uS

LD* TIMING

Duty Cycle

40

60

%

6

Load Frequency

60

MHz

Rise Time

2ns

7, 8

Fall Time

2ns

7, 8

REFERENCE INPUT CLOCK

Crystal Frequency

520

MHz

Crystal Oscillator

20

pF

Loading Capacitance

XTAL1 High Time

8ns

2

XTAL1 Low Time

8ns

2

Rise Time

10

ns

2, 7

Fall Time

10

ns

2, 7

DIGITAL INPUTS

Frequency Select Setup Time

110

ns

10

Frequency Select Hold Time

210

ns

10

Strobe Pulse Width

320

ns

10

PIPELINE DELAY RESET

Reset Activation

ns

10

Reset Duration

5

ns

10

Restart Delay

6

ns

10

Notes:

1.

Use of the post-divider is required for frequencies lower than 20 MHz on CLK and CLK outputs. Use of the

post-divider is recommended for output frequencies lower than 65 MHz.

2.

Values for XTAL1 driven by an external clock

3.

Duty Cycle for Differential Output (CLK- CLK)

4.

Duty cycle measured at VOD/2 for Differential CLK Output

5.

Rise and fall time between 20% and 80% of VOD

6.

Duty cycle measured at 1.4V for TTL I/O

7.

Rise and fall time between 0.8 and 2.0 VDC for TTL I/O

8.

Output pin loading = 15 pF

9.

See Figure 3.

10. See Figure 4.

ICS1567

8