21-Bit Deserializers with Programmable

Spread Spectrum and DC Balance

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5

Note 1: Current into a pin is defined as positive. Current out of a pin is defined as negative. All voltages are referenced to ground,

Note 2: Maximum and minimum limits over temperature are guaranteed by design and characterization. Devices are production

Note 3: To provide a mid level, leave the input open, or, if driven, put driver in high impedance. High-impedance leakage current

must be less than ±10µA.

Note 4: RxCLKOUT limits are scaled based on RxOUT_ measurements, design, and characterization data.

Note 5: One output shorted at a time. Current out of the pin.

at ±6 sigma.

Note 8: RCIP is the period of RxCLKIN. RCOP is the period of RxCLKOUT.

Note 9: RSKM is measured with less than 150ps cycle-to-cycle jitter on RxCLKIN.

AC ELECTRICAL CHARACTERISTICS (continued)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

RxCLKOUT High Time

RCOH

Figures 5a, 5b

0.35 x

RCOP

ns

RxCLKOUT Low Time

RCOL

Figures 5a, 5b

0.35 x

RCOP

ns

RxOUT Setup to RxCLKOUT

RSRC

Figures 5a, 5b

0.3 x

RCOP

ns

RxOUT Hold from RxCLKOUT

RHRC

Figures 5a, 5b

0.45 x

RCOP

ns

RxCLKIN to RxCLKOUT Delay

RCCD

SSG = low, Figures 6a, 6b

4.5 +

(RCIP / 2)

6.5 +

(RCIP / 2)

8.2 +

(RCIP / 2)

ns

Deserializer Phase-Locked-

Loop Set

RPLLS

Figure 7

65,600 x

RCIP

ns

Deserializer Power-Down Delay

RPDD

Figure 8

100

ns

Deserializer Phase-Locked-

Loop Set from SSG Change

RPLLS2

Figure 9

32,800 x

RCIP

ns

Maximum output

frequency

+ 3.6%

+ 4.0%

+ 4.4%

SSG = high,

Figure 10

Minimum output

frequency

- 4.4%

- 4.0%

- 3.6%

Maximum output

frequency

+ 1.8%

+ 2.0%

+ 2.2%

SSG = open,

Figure 10

Minimum output

frequency

- 2.2%

- 2.0%

- 1.8%

Spread-Spectrum Output

Frequency

SSG = low

MHz

Spread-Spectrum Modulation

Frequency

Figure 10

1016

Hz