9DB833

EIGHT OUTPUT DIFFERENTIAL BUFFER FOR PCIE GEN1,2,3

IDT®

EIGHT OUTPUT DIFFERENTIAL BUFFER FOR PCIE GEN1,2,3

3

9DB833

REV G 082515

Pin Descriptions

PIN #

PIN NAME

PIN TYPE

DESCR IPTION

1SRC_DIV#

IN

Active low Input for determining SRC output frequency SRC or SRC/2.

0 = SRC/2, 1= SRC

2VDDR

PWR

3.3V power for differential input clock (receiver). This VDD should be treated as an

analog power rail and filtered appropriately.

3

GND

PWR

Ground pin.

4

SRC_IN

IN

0.7 V D ifferential SR C TRUE input

5

SRC_IN#

IN

0.7 V D ifferential SR C COMPLEMENTAR Y input

6OE0#

IN

Active low input for enabling DIF pair 0.

1 =disable outputs, 0 = enable outputs

7OE3#

IN

Active low input for enabling DIF pair 3.

1 =disable outputs, 0 = enable outputs

8

DIF_0

OUT

0.7V differential true clock output

9

DIF_0#

OUT

0.7V differential Complementary clock output

10

GND

PWR

Ground pin.

11

VDD

PWR

Power supply, nominal 3.3V

12

DIF_1

OUT

0.7V differential true clock output

13

DIF_1#

OUT

0.7V differential Complementary clock output

14

OE1#

IN

Active low input for enabling DIF pair 1.

1 =disable outputs, 0 = enable outputs

15

OE2#

IN

Active low input for enabling DIF pair 2.

1 =disable outputs, 0 = enable outputs

16

DIF_2

OUT

0.7V differential true clock output

17

DIF_2#

OUT

0.7V differential Complementary clock output

18

GND

PWR

Ground pin.

19

VDD

PWR

Power supply, nominal 3.3V

20

DIF_3

OUT

0.7V differential true clock output

21

DIF_3#

OUT

0.7V differential Complementary clock output

22

BYP#_HIBW_LOBW

IN

Tri-level input to select bypass mode, Hi BW PLL, or Lo BW PLL mode

23

SMBC LK

IN

Clock pin of SMBUS circuitry, 5V tolerant

24

SMBD AT

I/O

Data pin of SMBUS circuitry, 5V tolerant