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RECOMMENDED OPERATING CONDITIONS

ELECTRICAL CHARACTERISTICS

LVPECL INPUT IN, IN

LVPECL OUTPUT DRIVER Y[2:0], Y[2:0]

LVPECL INPUT-TO-LVPECL OUTPUT PARAMETERS

CDCM1804

SCAS697E – JULY 2003 – REVISED MAY 2005

MIN

TYP

MAX

UNIT

Supply voltage

3

3.3

3.6

V

Operating free-air temperature

–40

85

°C

over recommended operating free-air temperature range (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Input frequency

0

800

MHz

High-level input common mode

1

V

500

1300

mV

150

1300

Input current

±10

µA

Input impedance

300

k

Ω

Input capacitance at IN, IN

1

pF

(1)

Is required to maintain ac specifications

(2)

Is required to maintain device functionality

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Output frequency, see Figure 4

0

800

MHz

High-level output voltage

Termination with 50

Ω to V

V

Low-level output voltage

Termination with 50

Ω to V

V

Output voltage swing between Y and

Termination with 50

Ω to V

500

mV

Y, see Figure 4.

5

Output 3-state current

µA

10

Rise and fall time

200

350

ps

ure 9.

Output skew between any LVPECL

See Note A in Figure 8.

15

30

ps

output Y[2-0] and Y[2-0]

Crossing point-to-crossing point dis-

–50

50

ps

tortion

Part-to-part skew

Any Y, see Note B in Figure 8.

50

ps

Output capacitance

1

pF

LOAD

Expected output load

50

Ω

(1)

For an 800-MHz signal, the 50-ps error would result in a duty-cycle distortion of

±4% when driven by an ideal clock input signal.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

LVPECL INPUT-TO-LVPECL OUTPUT PARAMETER

Propagation delay rising edge

VOX to VOX

320

600

ps

Propagation delay falling edge

VOX to VOX

320

600

ps

LVPECL pulse skew

VOX to VOX, see Note C in Fig-

100

ps

ure 8.

6