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參數(shù)資料
| 型號(hào)： | TUSB2077 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 7-PORT HUB FOR THE UNIVERSAL SERIAL BUS WITH OPTIONAL SERIAL EEPROM INTERFACE |
| 中文描述： | 7 -端口通用串行總線與可選的串行EEPROM接口集線器 |
| 文件頁(yè)數(shù)： | 13/16頁(yè) |
| 文件大?。?/td> | 242K |
| 代理商： | TUSB2077 |
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TUSB2077A
7-PORT HUB FOR THE UNIVERSAL SERIAL BUS
WITH OPTIONAL SERIAL EEPROMINTERFACE
SLLS414 – MARCH 2000
13
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
self-powered hub, individual port power management
In a self-powered configuration, the TUSB2077A can be implemented for individual port-power management
when used with two TPS2044 because it is capable of supplying 500 mA of current to each downstream port
and can provide current limiting on a per port basis. When the hub detects a fault on a downstream port, power
is removed from only the port with the fault and the remaining ports continue to operate normally. Self-powered
hubs are required to implement over-current protection and report overcurrent conditions. The SN75240
transient suppressors reduce inrush current and voltage spikes on the data lines.
Figure 10. TUSB2077A Self-Powered Hub, Individual Port-Power Management Application
6-MHz Clock
Signal
BUSPWR
DP1
DM1
DP2
DM2
DP6
DM6
DP7
DM7
PWRON1
PWRON2
PWRON6
PWRON7
OVRCUR1
OVRCUR2
DP0
DM0
VCC
GND
XTAL1
XTAL2
EXTMEM
RESET
5 V
3.3 V
GND
D +
D –
Upstream
Port
3.3 V LDO
§
SN75240
EN1
EN2
EN3
OC1
OC2
D +
D –
5 V
GND
D +
D –
5 V
D +
D –
5 V
D +
D –
5 V
Downstream
Ports
5-V Board Power
Supply
TUSB2077A
TPS2044
A
B
C
D
100
μ
F
SN75240
A
B
C
D
GND
GND
GND
100
μ
F
100
μ
F
100
μ
F
TPS2042 and SN75240 are Texas Instruments devices. Two TPS2042 devices can be substituted for
the TPS2044.
120
μ
F per hub is the minimum required per the USB specification, version 1.1. However, TI recommends a 100
μ
F low ESR tantulum capacitor
per port for immunity to voltage droop.
§LDO is a 5 V to 3.3 V voltage regulator. TPS76333 from Texas Instruments can be used.
SN75240
A
B
5 V
GND
C
D
4.7
μ
F
0.1
μ
F
4.7
μ
F
EN4
OC3
OC4
OUT4
OUT3
OUT2
OUT1
EEDATA/GANGED
System
Power-On Reset
IN1
IN2
0.1
μ
F
15 k
15 k
15 k
15 k
1.5 k
3.3 V
15 k
15 k
15 k
15 k
3.3 V
OVRCUR6
OVRCUR7
MODE
DP0PUR
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TUSB2077A | 制造商:TI 制造商全稱:Texas Instruments 功能描述:7-PORT HUB FOR THE UNIVERSAL SERIAL BUS WITH OPTIONAL SERIAL EEPROM INTERFACE |
| TUSB2077APT | 功能描述:USB 接口集成電路 7-Port Hub W/Opt Ser EEPROM Ifc RoHS:否 制造商:Cypress Semiconductor 產(chǎn)品:USB 2.0 數(shù)據(jù)速率: 接口類型:SPI 工作電源電壓:3.15 V to 3.45 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WLCSP-20 |
| TUSB2077APT | 制造商:Texas Instruments 功能描述:HUB UNI SERIAL BUS 7 PORT 48LQFP 制造商:Texas Instruments 功能描述:HUB, UNI SERIAL BUS, 7 PORT, 48LQFP 制造商:Texas Instruments 功能描述:HUB, UNI SERIAL BUS, 7 PORT, 48LQFP; USB Type:USB Transceiver; USB Version:1.1; Supply Voltage Min:3V; Supply Voltage Max:3.6V; Digital IC Case Style:LQFP; No. of Pins:48; Data Rate:12Mbps; No. of Ports:7; Operating Temperature ;RoHS Compliant: Yes |
| TUSB2077APTG4 | 功能描述:USB 接口集成電路 7-Port USB Hub RoHS:否 制造商:Cypress Semiconductor 產(chǎn)品:USB 2.0 數(shù)據(jù)速率: 接口類型:SPI 工作電源電壓:3.15 V to 3.45 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WLCSP-20 |
| TUSB2077APTR | 功能描述:USB 接口集成電路 7-Port Hub W/Opt Ser EEPROM Ifc RoHS:否 制造商:Cypress Semiconductor 產(chǎn)品:USB 2.0 數(shù)據(jù)速率: 接口類型:SPI 工作電源電壓:3.15 V to 3.45 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WLCSP-20 |
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