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TUSB4041I-Q1 Datasheet(PDF) 10 Page - Texas Instruments

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Part # TUSB4041I-Q1
Description  Four-Port USB 2.0 Hub
Download  44 Pages
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

TUSB4041I-Q1 Datasheet(HTML) 10 Page - Texas Instruments

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background image
td2
GRSTz
VDD33
VDD
MISC_IO
td1
tsu_io
thd_io
10
TUSB4041I-Q1
SLLSEK4B – JULY 2015 – REVISED JANUARY 2016
www.ti.com
Product Folder Links: TUSB4041I-Q1
Submit Documentation Feedback
Copyright © 2015–2016, Texas Instruments Incorporated
(1)
An active reset is required if the VDD33 supply is stable before the VDD11 supply. This active Reset shall meet the 3ms power-up delay
counting from both power supplies being stable to the de-assertion of GRSTz.
(2)
The VDD33 and VDD have no power-on relationship unless GRSTz is only connected to a capacitor to GND. Then VDD must be stable
minimum of 10
μs before the VDD33.
(3)
MISC pins sampled at de-assertion of GRSTz: FULLPWRMGMTz, GANGED, PWRCTL_POL, SMBUSz, BATEN[4:1], and AUTOENz.
7.6 Power-Up Timing Requirements
MIN
NOM
MAX
UNIT
td1
VDD33 stable before VDD stable(1)
See (2)
ms
td2
VDD and VDD33 stable before deassertion of GRSTz
3
ms
tsu_io
Setup for MISC inputs(3) sampled at the deassertion of GRSTz
0.1
µs
thd_io
Hold for MISC inputs(3) sampled at the deassertion of GRSTz
0.1
µs
tVDD33_RAMP
VDD33 supply ramp requirements
0.2
100
ms
tVDD_RAMP
VDD supply ramp requirements
0.2
100
ms
Figure 1. Power-Up Timing Requirements
7.7 Hub Input Supply Current
Typical values measured at TA = 25°C
PARAMETER
VDD33
VDD
UNIT
3.3 V
1.1 V
LOW POWER MODES
Power on (after reset)
2.3
28
mA
Upstream disconnect
2.3
28
mA
Suspend
2.5
33
mA
ACTIVE MODES (US STATE AND DS STATE)
2.0 host / 1 HS device
45
63
mA
2.0 host / 4 HS devices
76
86
mA


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