CDCP1803

1:3 LVPECL CLOCK BUFFER

WITH PROGRAMMABLE DIVIDER

SCAS727B − NOVEMBER 2003 − REVISED FEBRUARY 2004

5

POST OFFICE BOX 655303

23

1

1

VDD/2

1

÷ 1

÷ 2

÷ 8

24

1

1

1

0

÷ 1

÷ 4

÷ 8

25

1

1

1

VDD/2

÷ 1

÷ 8

÷ 8

26

1

1

1

1

÷ 1

Off (high-z)

÷ 16

27

VDD/2

0

0

0

÷ 1

÷ 1

÷ 16

28

VDD/2

0

0

VDD/2

÷ 1

÷ 2

÷ 16

29

VDD/2

0

0

1

÷ 1

÷ 4

÷ 16

30

VDD/2

0

VDD/2

0

÷ 1

÷ 8

÷ 16

Rsv

VDD/2

1

VDD/2

1

Reserved

Reserved

Reserved

Rsv

VDD/2

1

1

0

N/A

Low

Low

NOTE: The LVPECL outputs are open emitter stages. Thus, if you leave the unused LVPECL outputs Y0, Y1, or Y2

unconnected, then the current consumption is minimized and noise impact to remaining outputs is neglectable.

Also, each output can be individually disabled by connecting the corresponding VDD input to GND.

−0.3 V to 3.8 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Continuous

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Electrostatic discharge (HBM 1.5 k

Ω, 100 pF), ESD

>2000 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Moisture level 24-pin MLF package (solder reflow temperature of 235

°C) MSL

2

. . . . . . . . . . . . . . . . . . . . . . . .

−65

°C to 150°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

125

°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

† Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and

functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not

implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

recommended operating conditions

MIN

TYP

MAX

UNIT

Supply voltage, VDD

3

3.3

3.6

V

Operating free-air temperature, TA

−40

85

°C

electrical characteristics over recommended operating free-air temperature range (unless

otherwise noted)

LVPECL input IN, IN

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

fclk

Input frequency

0

800

MHz

VCM

High-level input common mode

1

VDD−0.3

V

VIN

Input voltage swing between IN and IN,

see Note 1

500

1300

mV

VIN

Input voltage swing between IN and IN,

see Note 2

150

1300

mV

IIN

Input current

VI = VDD or 0 V

±10

µA

RIN

Input impedance

300

k

Ω

CI

Input capacitance at IN, IN

1

pF

NOTES:

1. Is required to maintain ac specifications

2. Is required to maintain device functionality