AX68002QF datasheet(41/57 Pages) ASIX

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AX6800x

2/4-Port USB KVM Switch SoC

4.1.5 USB Transceivers Specification

The below specifications are measured under the following conditions, unless stated otherwise:

VDDIO = VDDA_USB = 3.3 V; VDDK = 1.8 V; external pull-up 1.5KΩ or external pull-down 15KΩ;

external

series resistances (Rs=27Ω); Ta = 25 °C.

Symbol

Description

Conditions

Min

Typ

Max

Units

Analog Inputs/Outputs (U[3:0]_DP, U[3:0]_DM, D[3:0]_DP, D[3:0]_DM)

VDI

Differential Input Sensitivity

|VDP-VDM|

0.2

VCM

Differential Common-Mode

Voltage

Includes VDI range

0.8

2.5

VILSE

Single-Ended input Low Voltage

0.8

VIHSE

Single-Ended input High

Voltage

2.0

VOL

Output-Voltage Low

RL = 1.5K

Ωto +3.6V

0.3

VOH

Output-Voltage High

RL = 15K

Ωto VSS

2.8

ILZ

Off-State Leakage Current

-10

ZDRV

Driver Output Impedance

Steady-state drive

RPU

Internal Pull-up Resistance

0.89

1.575

KΩ

RPD

Internal Pull-down Resistance

14.25

KΩ

AC Specification

TFR

Full-Speed Rise Time

10% to 90% of |VOH - VOL|,

CL=50pF

TFF

Full-Speed Fall Time

90% to 10% of |VOH -

VOL|, CL=50pF

TLR

Low-Speed Rise Time

10% to 90% of |VOH - VOL|,

CL=200pF ~ 600pF

300

TLF

Low-Speed Fall Time

90% to 10% of |VOH -

VOL|, CL=200pF ~ 600pF

300

TRFM

Rise/Fall-Time Matching

Excluding the first

transition from idle state

111

VCRS

Output-Signal Crossover

Voltage

Excluding the first

transition from idle state

1.3

2.0

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