參數(shù)資料
型號(hào)： TUSB2077
廠(chǎng)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(xiàn)與可選的串行EEPROM接口集線(xiàn)器
文件頁(yè)數(shù)： 12/16頁(yè)
文件大小： 242K
代理商： TUSB2077
TUSB2077A
7-PORT HUB FOR THE UNIVERSAL SERIAL BUS
WITH OPTIONAL SERIAL EEPROMINTERFACE
SLLS414 – MARCH 2000
12
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
bus-powered hub, ganged port power management
When used in bus-powered mode, the TUSB2077A supports up to four downstream ports by controlling a
TPS2041 device which is capable of supplying 100 mA of current to each downstream port. Bus-powered hubs
must implement power switching to ensure current demand is held below 100 mA when the hub is hot-plugged
into the system. Utliizing the TPS2041 for ganged power management provides over-current protection for the
downstream ports. The SN75240 transient suppressors reduce inrush current and voltage spikes on the data
lines. The OVRCUR signals should be tied together for a ganged operation.
TPS2041 and SN75240 are Texas Instruments devices.
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.
DP1
DM1
DP2
DM2
DP3
DM3
DP4
DM4
PWRON1
PWRON2
PWRON3
PWRON4
PWRON5–7
OVRCUR1
OVRCUR2
OVRCUR3
OVRCUR4
OVRCUR5–7
DP0
DM0
VCC
XTAL1
XTAL2
EXTMEM
RESET
SN75240
EN
IN
IN
OC
OUT
OUT
OUT
D +
D –
5 V
GND
D +
D –
5 V
D +
D –
5 V
D +
D –
5 V
Downstream
Ports
TUSB2077A
TPS2041
A
B
C
D
100
μ
F
SN75240
A
B
C
D
GND
GND
GND
1
μ
F
100
μ
F
100
μ
F
100
μ
F
5 V
3.3 V
GND
D +
D –
Upstream
Port
3.3 V LDO
§
SN75240
A
B
5 V
GND
C
D
4.7
μ
F
0.1
μ
F
4.7
μ
F
GND
Ferrite Beads
Ferrite Beads
Ferrite Beads
Ferrite Beads
EEDATA/GANGED
6-MHz Clock
Signal
BUSPWR
System
Power-On Reset
3.3 V
1.5 k
15 k
15 k
15 k
15 k
15 k
15 k
15 k
15 k
DP5–DP7
DM5–DM7
NC
3.3 V
MODE
DP0PUR
Figure 9. TUSB2077A Bus-Powered Hub, Ganged Port Power Management Application
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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(chēng):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(lèi)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(lèi)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(lèi)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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