GL600USB datasheet(32/38 Pages) ETC

32 / 38 page

06/19/2000

GL600USB/GL600USB-A/GL600USB-B

Revision 1.3

VIH

Static input high

2.0

VCC = 5V

VIL

Static input low

0.9

VCC = 5V

ISINK1

Sink current for PORT1.2-

4, PORT2.0-7

VOUT = 0.4V;

ISINK2

Sink current for PORT1.0-

VOUT = 0.4V;

IIN

Input leakage current

-1

µA

VOUT = 0V or VCC

USB Low-speed Source

fOP

Internal operating

frequency

1.5

MHz

Transition time

Rise time

CL = 50pF

300

CL = 350pF

Fall time

CL = 50pF

300

CL = 350pF

tRFM

Rise/Fall time matching

120

tR / tF

VCRS

Output signal crossover

voltage

1.3

2.0

tDRATE

Low speed data rate

1.4775

676.8

1.5225

666.0

Mbs

1.5Mbs

± 1.5%

Source differential driver

jitter

tUDJ1

To next transition

-25

tUDJ2

For paired transition

-10

CL = 350pF measured at

crossover point

Receiver data jitter

tolerance

tDJR1

To next transition

-75

tDJR2

For paired transition

-45

CL = 350pF measured at

crossover point

tEOPT

Source EOP width

1.25

1.50

µs

Measured at crossover point

tDEOP

Differential to EOP

transition skew

-40

100

Measured at crossover point

Receiver EOP width

tEOPR1

Must reject as EOP

330

tEOPR2

Must accept

675

Measured at crossover point

Notes:

1. ISB measured with USB in suspend mode; using external square wave clock source (FOSC =

6MHz); transceiver pull-up resistor of 1.5K

Ω between V3.3 and D- and 1.5KΩ termination resistors on D+

and D- pins; no port pins sourcing current. The ISB value is including power consumed by external resistors.

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