ECP2 datasheet(63/386 Pages) LATTICE

63 / 386 page

3-11

DC and Switching Characteristics

Lattice Semiconductor

LatticeECP2/M Family Data Sheet

sysI/O Differential Electrical Characteristics

LVDS

Over Recommended Operating Conditions

Differential HSTL and SSTL

Differential HSTL and SSTL outputs are implemented as a pair of complementary single-ended outputs. All allow-

able single-ended output classes (class I and class II) are supported in this mode.

For further information about LVPECL, RSDS, MLVDS, BLVDS and other differential interfaces please see the list

of additional technical information at the end of this data sheet.

Parameter

Description

Test Conditions

Min.

Typ.

Max.

Units

VINP, VINM Input Voltage

—

2.4

VCM

Input Common Mode Voltage

Half the Sum of the Two Inputs

0.05

—

2.35

VTHD

Differential Input Threshold

Difference Between the Two Inputs

+/-100

—

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

—

ISA

Output Short Circuit Current

VOD = 0V Driver Outputs Shorted to

Ground

—

ISAB

Output Short Circuit Current

VOD = 0V Driver Outputs Shorted to

Each Other

—

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