Rainbow Electronics W90P710CDG User Manual

Page 519

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W90P710CD/W90P710CDG

- 520 -

7.3.3 USB Transceiver AC Characteristics

Low Speed: 75ns at C

L

= 50pF, 300ns at C

L

= 350pF

Full Speed: 4 to 20ns at C

L

= 50pF

Differential

Data Lines

10%

Rise Time

90%

Fall Time

t

F

t

R

10%

90%

C

L

C

L

Data Signal Rise and Fall Time

USB Transceiver AC Characteristics

SYMBOL DESCRIPTION

CONDITIONS MIN

MAX

UNIT

T

R

Rise Time

CL = 50 pF

4

20

ns

T

F

Fall Time

CL = 50 pF

4

20

ns

T

RFM

Rise/Fall Time Matching

90

110

%

T

DRATE

Full Speed Data Rate

Average bit rate

(12 Mb/s

± 0.25%)

11.97 12.03 Mbps

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