IDT®

Four Output Differential Buffer for PCIe Gen 1 and Gen 2

ICS9DB403D

REV R 11/1/12

ICS9DB403D

Four Output Differential Buffer for PCIe for Gen 1 and Gen 2

10

Vdiff

Vp-p

Vcm

R1

R2

R3

R4

Note

0.45v

0.22v

1.08

33

150

100

100

0.58

0.28

0.6

33

78.7

137

100

0.80

0.40

0.6

33

78.7

none

100

ICS874003i-02 input compatible

0.60

0.3

1.2

33

174

140

100

Standard LVDS

R1a = R1b = R1

R2a = R2b = R2

Alternative Termination for LVDS and other Common Differential Signals (figure 3)

HCSL Output Buffer

L1

L1'

R1b

L2

L2'

R1a

L4'

L4

L3

R2a

R2b

Down Device

REF_CLK Input

Figure 3

L3'

R3

R4

Component

Value

Note

R5a, R5b

8.2K 5%

R6a, R6b

1K 5%

Cc

0.1 µF

Vcm

0.350 volts

Cable Connected AC Coupled Application (figure 4)

PCIe Device

REF_CLK Input

Figure 4

R5a

L4'

L4

3.3 Volts

R5b

R6a

R6b

Cc

Cc