LMK6C datasheet(9/56 Pages) TI

9 / 56 page

over recommended operating conditions, typical temperature = 25°C, frequency output = 156.25 MHz, VDD = 3.3 V,

LVCMOS output capacitor load = 2.2 pF (unless otherwise specified)(4)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

LVPECL Output Characteristics

Fout

Output frequency

400

MHz

VOD

Output voltage swing (VOH – VOL)

AC coupled, VDD = 3.3 V

525

645

765

AC coupled, VDD = 2.5 V

450

555

660

AC coupled, VDD = 1.8 V

280

375

470

DC coupled, VDD = 2.5 V/ 3.3 V(1)

650

800

950

DC coupled, VDD = 1.8 V(1)

450

600

750

VOD,DIFF Differential output peak-peak swing

2 × |VOD|

Vpp

VOS

Output common-mode voltage

VDD = 3.3 V(1)

1.5

1.6

1.7

VDD = 2.5 V(1)

0.825

0.9

0.975

VDD = 1.8 V(1)

0.45

0.5

0.55

tR/tF

Output rise/fall time

20% to 80% of VOD,DIFF, VDD = 2.5 V/ 3.3

120

200

20% to 80% of VOD,DIFF, VDD = 1.8 V

120

200

ODC

Output duty cycle

VDD = 2.5 V/ 3.3 V, measured between

50% points on the waveform

VDD = 1.8 V, measured between 50%

points on the waveform

LVDS Output Characteristics

Fout

Output frequency

400

MHz

VOD

Output voltage swing (VOH – VOL)

Under LVDS load condition

250

350

450

VOD,DIFF Differential output peak-peak swing

2 × |VOD|

Vpp

VOS

Output common-mode voltage

VDD = 2.5 V/3.3 V

1.025

1.2

1.375

VDD = 1.8 V

0.80

0.9

1.0

tR/tF

Output rise/fall time

20% to 80% of VOD,DIFF, VDD = 2.5 V/3.3

150

250

20% to 80% of VOD,DIFF, VDD = 1.8 V

150

250

ODC

Output duty cycle

VDD = 2.5 V/3.3 V, measured between

50% points on the waveform

VDD = 1.8 V, measured between 50%

points on the waveform

HCSL Output Characteristics

Fout

Output frequency

400

MHz

VOH

Output high voltage

DC coupled, 50 Ω to ground, VDD = 2.5

V/ 3.3 V

650

750

850

DC coupled, 50 Ω to ground, VDD = 1.8 V

460

560

660

VOL

Output low voltage

DC coupled, 50 Ω to ground, VDD = 2.5

V/ 3.3 V

–150

150

DC coupled, 50 Ω to ground, VDD = 1.8 V

–150

150

VOD,DIFF Differential output peak-peak swing

2 × |VOH

– VOL|

Vcross

Absolute crossing point voltage

VDD = 3.3 V / 2.5 V, fout = 100 MHz

0.2

0.35

0.50

Vpp

VDD = 1.8 V, fout = 100 MHz

0.15

0.275

0.40

Vpp

Vcross-

delta

Absolute crossing point voltage variation

VDD = 3.3 V / 2.5 V / 1.8 V, fout = 100

MHz

0.14

dV/dt

Output slew rate

50 Ω to ground; DC coupled load;

measured slew rate in ±150 mV from

center.

V/ns

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LMK6C, LMK6D, LMK6H, LMK6P

SNAS826D – APRIL 2022 – REVISED FEBRUARY 2023

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