Four Output Differential Buffer for PCI Express

ICS9DB401C

REV E 03/18/08

ICS9DB401C

Four Output Differential Buffer for PCI Express

6

Electrical Characteristics - DIF 0.7V Current Mode Differential Pair

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

NOTES

Current Source Output

Impedance

Zo

1

3000

Ω

1

Voltage High

VHigh

660

850

1,3

Voltage Low

VLow

-150

150

1,3

Max Voltage

Vovs

1150

1

Min Voltage

Vuds

-300

1

Crossing Voltage (abs)

Vcross(abs)

250

550

mV

1

Crossing Voltage (var)

d-Vcross

Variation of crossing over all

edges

140

mV

1

Long Accuracy

ppmsee Tperiod min-max values

0

ppm1,2

Rise Time

175

700

ps

1

Fall Time

175

700

ps

1

Rise Time Variation

125

ps

1

Fall Time Variation

125

ps

1

Duty Cycle

Measurement from differential

wavefrom

45

55

%

1

Skew

50

ps

1

PLL mode,

Measurement from differential

wavefrom

50

ps

1

BYPASS mode as additive jitter

50

ps

1

complies with CK409/CK410 accuracy requirements

Jitter, Cycle to cycle

Statistical measurement on single

ended signal using oscilloscope

math function.

mV

Measurement on single ended

signal using absolute value.

mV

Electrical Characteristics - Clock Input Parameters

PARAMETER

SYMBOL

CONDITIONS

MIN

MAX

UNITS

NOTES

Differential Input High Voltage

V

IHDIF

Differential inputs

(single-ended measurement)

600

1150

mV

1

Differential Input Low Voltage

V

ILDIF

Differential inputs

(single-ended measurement)

V

300

mV

1

Input Slew Rate - DIF_IN

dv/dt

Measured differentially

0.4

8

V/ns

2

Input Leakage Current

I

IN

V

-5

5

uA

1

Input Duty Cycle

Measurement from differential

wavefrom

45

55

%

1

Input SRC Jitter - Cycle to

Cycle

SRCJ

C2CIn

Differential Measurement

125

ps

1