6.10 Switching Characteristics

Over recommended operating conditions (unless otherwise noted). All typical values are at TA = 25°C, VBUSx = 5 V, V3P3Vx =

3.3 V, V1P8Vx = 1.8 V.

PARAMETER

TEST CONDITIONS

MIN TYP

MAX UNIT

POWER-UP TIMING

TPWRUP

Time taken for the device to power up, and

recognize USB signaling, after valid power

supply is provided on both side 1 and side

2.

All external power supplies are ramped up

together with 5 µs power up time.

3.6

8

ms

UDx, DDx, HS Driver Switching Characteristics

THSR

Rise Time (10% - 90%)

USB 2.0 Spec Section 7.1.2, 45 Ω to GND loads

on D+ and D-, EQxx = 00

310

370

510

ps

THSF

Fall Time (10% - 90%)

USB 2.0 Spec Section 7.1.2, 45 Ω to GND loads

on D+ and D-, EQxx = 00

310

370

510

ps

UDx, DDx, FS Driver Switching Characteristics

TFR

Rise Time (10% - 90%)

USB 2.0 Spec Figures 7-8, 7-9, CL = 50 pF

4

20

ns

TFF

Fall Time (10% - 90%)

USB 2.0 Spec Figures 7-8, 7-9, CL = 50 pF

4

20

ns

TFRFM

Differential Rise and Fall Time Matching

(TFR/TFM)

USB 2.0 Spec 7.1.2, Excluding first transition

from Idle state, Figure 7-9, CL = 50 pF

90

111.1

%

UDx, DDx, LS Driver Switching Characteristics

TLR

Rise Time (10% - 90%)

USB 2.0 Spec Figures 7-8 and 7-10, with

CL range 50 pF to 600 pF.

75

300

ns

TLF

Fall Time (10% - 90%)

USB 2.0 Spec Figures 7-8 and 7-10, with

CL range 50 pF to 600 pF.

75

300

ns

TLRFM

Rise and Fall Time Matching (TLR/TFM),

Excluding first transition from idle state.

USB 2.0 Spec Figures 7-8 and 7-10, with

CL range 50 pF to 600 pF.

80

125

%

REPEATER TIMING - CONNECT, DISCONNECT, RESET, L1, L2

TFILTCONN

Debounce filter on FS or LS Connect

Detection

45

70

80

µs

TDDIS

Time to detect disconnect at the DS facing

port in LS/FS L0 mode.

2

7

µs

TDETRST

Time taken to detect reset on US port in

LS/FS L0 mode

0

7

µs

T2SUSP

Time taken by the US side to detect

suspend (L2) and draw less than 2.5 mA

current when bus is continuously in Idle

3

10

ms

tDRESUMEL1

Maximum time to detect resume on the US

and reflect/drive resume on the DS port

from sleep/L1 state.

1

µs

tDRESUMEL2

Maximum time to detect resume on the US

and reflect/drive resume on the DS port

from suspend/L2 state.

130

µs

tDWAKEL1

Maximum time to detect and propagate

remote wake when in sleep/L1 state.

5

µs

tDWAKEL2

Maximum pulse width of remote wake

that is guranteed to be detected when in

suspend/L2 state.

900

µs

tDRSMPROP

Minimum duration of resume driven

upstream and downstream after detecting

remote wake when in suspend/L2 state.

1

ms

CMTI

Common mode transient immunity

PK-PK common mode noise, VCMPKPK = 1200

V, with (xD+, xD-) set to (V3P3Vx, 0), (0, V3P3Vx)

or (0,0). See Figure 7-3

75

100

kV/µs

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ISOUSB211

SLLSFC5B – NOVEMBER 2021 – REVISED SEPTEMBER 2022

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