9202 datasheet(100/175 Pages) STMICROELECTRONICS

100 / 175 page

UPSD3254A, UPSD3254BV, UPSD3253B, UPSD3253BV

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Table 81. Transceiver DC Characteristics

Note: 1. VCC = 5V ± 10%; VSS = 0V; TA = 0 to 70°C.

2. Level guaranteed for range of VCC = 4.5V to 5.5V.

3. With RPU, external idle resistor, 7.5

κ±2%, D- to VCC.

Table 82. Transceiver AC Characteristics

Note: 1. VCC = 5V ± 10%; VSS = 0V; TA = 0 to 70°C.

2. Level guaranteed for range of VCC = 4.5V to 5.5V.

3. With RPU, external idle resistor, 7.5

κ±2%, D- to VCC.

4. CL of 50pF(75ns) to 350pF (300ns).

5. Measured at crossover point of differential data signals.

6. USB specification indicates 330ns.

Symb

Parameter

Test Conditions(1)

Min

Max

Unit

VOH

Static Output High

15k

Ω ± 5% to GND(2,3)

2.8

3.6

VOL

Static Output Low

Notes 2, 3

—

0.3

VDI

Differential Input Sensitivity

|(D+) - (D-)|, Fig. 47

0.2

—

VCM

Differential Input Common Mode

Fig. 47

0.8

2.5

VSE

Single Ended Receiver Threshold

—

0.8

2.0

CIN

Transceiver Capacitance

—

IIO

Data Line (D+, D-) Leakage

0V < (D+,D-) < 3.3

–10

µA

RPU

External Bus Pull-up Resistance, D-

7.5k

Ω ± 2% to VCC

7.35

7.65

Ω

RPD

External Bus Pull-down Resistance

15k

Ω ± 5%

14.25

15.75

Ω

Symb

Parameter

Test Conditions(1)

Min

Max

Unit

tDRATE

Low Speed Data Rate

Ave. bit rate (1.5Mb/s ± 1.5%)

1.4775

1.5225

Mbit/s

tDJR1

Receiver Data Jitter Tolerance

To next transition, Fig. 47(5)

–75

tDJR2

Differential Input Sensitivity

For paired transition, Fig 47(5)

–45

tDEOP

Differential to EOP Transition Skew

Fig. 48(5)

–40

100

tEOPR1

EOP Width at Receiver

Rejects as EOP(5,6)

165

—

tEOPR2

EOP Width at Receiver

Accepts as EOP(5)

675

—

tEOPT

Source EOP Width

—

–1.25

1.50

µs

tUDJ1

Differential Driver Jitter

To next transition, Fig. 49

–95

tUDJ2

Differential Driver Jitter

To paired transition, Fig. 49

–150

150

USB Data Transition Rise Time

Notes 2, 3, 4

300

USB Data Transition Fall Time

Notes 2, 3, 4

300

tRFM

Rise/Fall Time Matching

tR / tF

120

VCRS

Output Signal Crossover Volt age

—

1.3

2.0

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