LM4308

SNLS225C – AUGUST 2007 – REVISED MAY 2013

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SWITCHING CHARACTERISTICS (continued)

Over recommended operating supply and temperature ranges unless otherwise specified.

(1)

Symbol

Parameter

Conditions

Min

Typ

Max

Units

POWER UP TIMING

DC ON High Delay

Link Start Up Sequence

CLK

128

cycles

DC Low Delay

CLK

128

cycles

DC Active Delay

CLK

504

cycles

DD High Delay

CLK

128

cycles

DD Low Delay

CLK

8

cycles

DD Differential ON

CLK

128

cycles

Start Up Delay

CLK

1,024

Includes PLL Lock Time

cycles

POWER OFF TIMING

Turn Off Delay

0.1

2

µs

(5)

RECOMMENDED INPUT TIMING REQUIREMENTS

Over recommended operating supply and temperature ranges unless otherwise specified.

(1)

Symbol

Parameter

Conditions

Min

Typ

Max

Units

MASTER REFERENCE CLOCK (CLK)

f

Clock Frequency

9.6

30

MHz

Clock Period

33.3

104.2

ns

Clock Duty Cycle

30

50

70

%

Clock/Data Transition Times

2

>2

ns

CLK Stop Gap

4

CLKcycles

(1)

(2)

Maximum transition time is a function of clock rate and should be less than 30% of the clock period to preserve signal quality.

6

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