TUSB542 datasheet(6/29 Pages) TI2

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5.7 Electrical Characteristics, Dynamic

over operating free-air temperature range (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Differential Receiver

V(RX-DC-CM)

RX DC common mode voltage

R(RX-CM-DC)

Receiver DC common mode

impedance

Measured at connector. Present when

SuperSpeed USB device detected on TX

pins.

R(RX-DIFF-DC)

Receiver DC differential impedance

Measured at connector. Present when

SuperSpeed USB device detected on TX

pins.

120

Z(RX-HIGH-IMP-DC-POS)

DC input CM input impedance when

termination is disabled.

Measured at connector. Present when no

SuperSpeed USB device detected on TX

pins or while VCC is ramping.

kΩ

V(RX-LFPS-DET-DIFF-P-P)

LFPS Detect threshold. Below min is

noise.

Measured at connector. Below min is

squelched.

0.1

0.3

V(RX-CM-AC-P)

Peak RX AC common mode voltage Measured at package pin.

150

C(RX-PARASITIC)

Rx Input capacitance for return loss

At package pin to AC GND.

1.1

Differential Transmitter

V(TX-DIFF-PP)

Differential peak-to-peak TX voltage

swing

OS Low, 0dB DE

0.9

OS High, 0dB DE

1.1

V(TX-DIFF- PP-LFPS)

LFPS differential voltage swing

OS Low, High

0.8

1.2

V(TX-DE- RATIO)

Transmitter de-emphasis

Low

Mid

3.5

High

V(TX-RCV-DETECT)

The amount of voltage change

allowed during Receiver Detection.

0.6

V(TX-DC-CM)

TX DC common mode voltage

The instantaneous allowed DC common-

mode voltage at connector side of AC

coupling capacitor.

V(TX-IDLE-DIFF-AC-PP)

AC Electrical Idle differential peak-to-

peak output voltage

At package pin.

V(TX-IDLE-DIFF_DC)

DC Electrical Idle differential output

voltage

At package pin. After low pass filter to

remove AC component.

V(TX-CM-DC-ACTIVE-IDLE-

DELTA)

Absolute DC common mode voltage

between U1 and U0.

At package pin.

0.2

I(TX-SHORT)

TX short-circuit current limit

R(TX-DC)

TX DC common mode impedance

At package pins

R(TX-DIFF-DC)

TX DC differential impedance

120

C(TX-PARASTIC)

TX input capacitance for return loss

At package pins to AC GND

1.25

T(jitter)

Total Residual Jitter (peak to peak)

5.8 Electrical Characteristics, AC

over operating free-air temperature range (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Xtalk

Differential Cross talk between TX and RX

Signal Pairs

at 2.5 GHz, TX to RX

–45

TUSB542

SLLSER3F – DECEMBER 2015 – REVISED DECEMBER 2023

www.ti.com

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