DSA504RT datasheet(57/73 Pages) MICROCHIP

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DSA504RT

Electrical Characteristics

Preliminary Data Sheet

DS50004033A - 57

Table 6-9. LVPECL AC Electrical Characteristics

Electrical Characteristics: Unless otherwise indicated, VDD = 3.3V ±10%, VDD = 2.5V ±10%, CLOAD = 2pF, TA = –40°C to

+105°C.

Parameter

Symbol

Min.

Typ.

Max.

Units Condition

Output Frequency

fOUT

0.35

—

662

MHz —

Output Voltage

Swing

VSWING

0.6

0.8

1.0

—

LVPECL Output Rise/

Fall Time

tR/tF

—

350/420

—

20% – 80%

6.4.2.

LVDS AC Electrical Characteristics

The following table lists the LVDS AC electrical characteristics details.

Table 6-10. LVDS AC Electrical Characteristics

Electrical Characteristics: Unless otherwise indicated, VDD = 3.3V ±10%, VDD = 2.5V ±10%, VDD = 1.8V +10%/-5%, CLOAD =

2pF, TA = –40°C to +105°C.

Parameter

Symbol

Min.

Typ.

Max.

Units Condition

Output Frequency

fOUT

0.35

—

662

MHz —

Differential Output

Voltage

VOD

275

350

475

VDDO = 2.5V/3.3V

—

270

—

VDDO = 1.8V

VOD Magnitude

Change

ΔVOD

—

LVDS Output Rise/

Fall Time

tR/tF

—

200/200

—

20% – 80%

6.4.3.

LPHCSL AC Electrical Characteristics

The following table lists the LPHCSL AC electrical characteristics details.

Table 6-11. LPHCSL AC Electrical Characteristics

Electrical Characteristics: Unless otherwise indicated, VDD = 3.3V ±10%, VDD = 2.5V ±10%, VDD = 1.8V +10%/-5%, CLOAD =

2pF, TA = –40°C to +105°C.

Parameter

Symbol

Min

Typ

Max

Units Condition

Output Frequency

fOUT

0.35

—

250

MHz —

Output Swing

—

0.8

—

VPP

HCSL, Figure 6-1

Output Rise/Fall

Time

tR/tF

—

260/310

—

20% – 80%

Rising Edge Rate

—

0.6

—

4.0

V/ns Note 1, Note 2

Falling Edge Rate

—

0.6

—

4.0

V/ns Note 1, Note 2

Absolute Crossing

Point Voltage

VCROSS

+250

—

+550

Note 3, Note 4, Note 5, Figure 6-1

Variation of VCROSS

over All Clock Edges VCROSS DELTA

—

+140

Note 3, Note 4, Note 6, Figure 6-3

Ringback Voltage

Margin

VRB

–100

—

+100

Note 1, Note 7, Figure 6-4

Time Before VRB is

Allowed

tSTABLE

500

—

Note 1, Note 7

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