NB2305A

http://onsemi.com

5

Zero Delay and Skew Control

All outputs should be uniformly loaded to achieve Zero

Delay between input and output. Since the CLKOUT pin is

the internal feedback to the PLL, its relative loading can

adjust the input−output delay.

For applications requiring zero input−output delay, all

outputs, including CLKOUT, must be equally loaded. Even

if CLKOUT is not used, it must have a capacitive load equal

to that on other outputs, for obtaining zero−input−output

delay.

SWITCHING WAVEFORMS

Figure 3. Duty Cycle Timing

1.4 V

1.4 V

1.4 V

Figure 4. All Outputs Rise/Fall Time

OUTPUT

2.0 V

0.8 V

2.0 V

0.8 V

3.3 V

0 V

1.4 V

1.4 V

Figure 5. Output − Output Skew

OUTPUT

OUTPUT

INPUT

OUTPUT

Figure 6. Input − Output Propagation Delay

2

2

Figure 7. Device − Device Skew

CLKOUT, Device 1

2

2

CLKOUT, Device 2