9DB233

TWO OUTPUT DIFFERENTIAL BUFFER FOR PCIE GEN3

IDT®

TWO OUTPUT DIFFERENTIAL BUFFER FOR PCIE GEN3

3

9DB233

REV E 021914

Pin Descriptions

PIN #

PIN

NAME

PIN TYPE

DESCRIPTION

1

PLL_BW

IN

3.3V input for selecting PLL Band Width

0 = low, 1= high

2

SRC_IN

IN

0.7 V Differential SRC TRUE input

3

SRC_IN# IN

0.7 V Differential SRC COMPLEMENTARY input

4

vOE0#

IN

Active low input for enabling DIF pair 0. This pin has an internal pull-down.

1 =disable outputs, 0 = enable outputs

5

VDD

PWR

Power supply, nominal 3.3V

6

GND

PWR

Ground pin.

7

DIF_0

OUT

0.7V differential true clock output

8

DIF_0#

OUT

0.7V differential Complementary clock output

9

VDD

PWR

Power supply, nominal 3.3V

10

SMBDAT

I/O

Data pin of SMBUS circuitry, 5V tolerant

11

SMBCLK

IN

Clock pin of SMBUS circuitry, 5V tolerant

12

VDD

PWR

Power supply, nominal 3.3V

13

DIF_1#

OUT

0.7V differential Complementary clock output

14

DIF_1

OUT

0.7V differential true clock output

15

GND

PWR

Ground pin.

16

VDD

PWR

Power supply, nominal 3.3V

17

vOE1#

IN

Active low input for enabling DIF pair 1. This pin has an internal pull-down.

1 =disable outputs, 0 = enable outputs

18

IREF

OUT

This pin establishes the reference for the differential current-mode output

pairs. It requires a fixed precision resistor to ground. 475ohm is the standard

value for 100ohm differential impedance. Other impedances require

different values. See data sheet.

19

GNDA

PWR

Ground pin for the PLL core.

20

VDDA

PWR

3.3V power for the PLL core.

Pins preceeded by ' v ' have internal 120K ohm pull down resistors

Note: