LFSC datasheet(50/237 Pages) LATTICE

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3-6

DC and Switching Characteristics

Lattice Semiconductor

LatticeSC/M Family Data Sheet

PURESPEED I/O Differential Electrical Characteristics

LVDS

Over Recommended Operating Conditions

Hyper Transport

Over Recommended Operating Conditions

Parameter

Symbol

Parameter Description

Test Conditions

Min.

Typ.

Max.

Units

VINP, VINM

Input voltage

—

2.4

VTHD

Differential input threshold (Q-Q)

+/-100

—

VCM

Input common mode voltage

0.05

1.2

2.35

IIN

Input current

Power on or power off

—

+/-10

µA

VOH

Output high voltage for VOP or VOM

RT = 100 Ohm

—

1.38

1.60

VOL

Output low voltage for VOP or VOM

RT = 100 Ohm

0.9V

1.03

—

VOD

Output voltage differential

(VOP - VOM), RT = 100 Ohm

250

350

450

ΔVOD

Change in VOD between high and

low

—

VOS

Output voltage offset

(VOP - VOM)/2, RT = 100 Ohm

1.125

1.20

1.375

ΔVOS

Change in VOS between H and L

—

ISAB

Output short circuit current

VOD = 0V Driver outputs

shorted

—

Notes:

1. Data is for 3.5mA differential current drive. Other differential driver current options are available.

2. If the low power mode of the input buffer is used, the minimum VCM is 600 mV.

Parameter Symbol

Description

Min.

Typ.

Max.

Units

VOD

Differential output voltage

500

600

700

ΔVOD

Change in VOD magnitude

-15

—

VOCM

Output common mode voltage

560

600

640

ΔVOCM

Change in VOCM magnitude

-15

—

VID

Input differential voltage

500

600

700

ΔVID

Input differential voltage

-15

—

VICM

Input common mode voltage

500

600

700

ΔVICM

Change in VICM magnitude

-15

—

Notes:

1. Data is for 6mA differential current drive. Other differential driver current options are available.

2. If the low power mode of the input buffer is used, the minimum VCM is 600 mV.

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