CDCLVP1212

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SCAS886A – AUGUST 2009 – REVISED MAY 2010

PIN DESCRIPTIONS

CDCLVP1212 Pin Descriptions

TERMINAL

TERMINAL

PULL-UP/

NAME

NO.

TYPE

PULLDOWN

DESCRIPTION

5, 6, 11, 20,

Power

—

2.5-V/3.3-V supplies for the device

31, 40

GND

21, 30

Ground

—

Device grounds

INP0, INN0

9, 8

Input

—

Differential input pair or single-ended input. Unused input pair can be left floating.

Redundant differential input pair or single-ended input. Unused input pair can be

INP1, INN1

2, 3

Input

—

left floating.

OUTP11,

38, 39

Output

—

Differential LVPECL output pair no. 11. Unused output pair can be left floating.

OUTN11

OUTP10,

36, 37

Output

—

Differential LVPECL output pair no. 10. Unused output pair can be left floating.

OUTN10

OUTP9,

34, 35

Output

—

Differential LVPECL output pair no. 9. Unused output pair can be left floating.

OUTN9

OUTP8,

32, 33

Output

—

Differential LVPECL output pair no. 8. Unused output pair can be left floating.

OUTN8

OUTP7,

28, 29

Output

—

Differential LVPECL output pair no. 7. Unused output pair can be left floating.

OUTN7

OUTP6,

26, 27

Output

—

Differential LVPECL output pair no. 6. Unused output pair can be left floating.

OUTN6

OUTP5,

24, 25

Output

—

Differential LVPECL output pair no. 5. Unused output pair can be left floating.

OUTN5

OUTP4,

22, 23

Output

—

Differential LVPECL output pair no. 4. Unused output pair can be left floating.

OUTN4

OUTP3,

18, 19

Output

—

Differential LVPECL output pair no. 3. Unused output pair can be left floating.

OUTN3

OUTP2,

16, 17

Output

—

Differential LVPECL output pair no. 2. Unused output pair can be left floating.

OUTN2

OUTP1,

14, 15

Output

—

Differential LVPECL output pair no. 1. Unused output pair can be left floating.

OUTN1

OUTP0

12, 13

Output

—

Differential LVPECL output pair no. 0. Unused output pair can be left floating.

OUTN0

Pulldown

IN_SEL

1

Input

MUX select input for input choice (see Table 2)

(see Table 1)

Bias voltage output for capacitive coupled inputs. If used, it is recommended to

7

Output

—

use a 0.1-mF capacitor to GND on this pin. The output current is limited to 2 mA.

NC

4, 10

—

—

Do not connect

Table 1. Pin Characteristics

PARAMETER

MIN

TYP

MAX

UNITS

Input pulldown resistor

150

k

Ω

Table 2. Input Selection Table

IN_SEL

ACTIVE CLOCK INPUT

0

INP0, INN0

1

INP1, INN1

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