TUSB2077A ,7-Port USB Hub W/Optional Serial EEPROM InterfaceElectrical Characteristics....... 712 Device and Documentation Support........ 207.6 Differential D ..
TUSB2077A ,7-Port USB Hub W/Optional Serial EEPROM InterfaceMaximum Ratings . 510.2 Downstream Port Power... 177.2 ESD Ratings........ 611 Layout.... 187.3 Rec ..
TUSB2077APT ,7-Port USB Hub W/Optional Serial EEPROM InterfaceFeatures... 18.4 Device Functional Modes.... 112 Applications..... 18.5 Programming..... 113 Descri ..
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TUSB2551RGTR , ADVANCED UNIVERSAL SERIAL BUS TRANSCEIVER
UC3843ADTR ,Current Mode PWM ControllerMaximum ratings table with maximum negative voltage and GND pin notes..... 6Changes from Revision B ..
UC3843ADTRG4 ,Current Mode PWM Controller 14-SOIC 0 to 70Block Diagram... 1011.8 Glossary. 257.3 Feature Description.... 1012 Mechanical, Packaging, and Ord ..
UC3843ADX ,SMPS Controllerapplications. The internal cir-• Cycle by Cycle Current Limiting cuits in ..
UC3843AL-S08-R , CURRENT MODE PWM CONTROL CIRCUITS
UC3843AN ,SMPS ControllerUC3842A, UC3843A,UC2842A, UC2843AHigh PerformanceCurrent Mode ControllersThe UC3842A, UC3843A serie ..
UC3843AN. ,SMPS Controller3AN1080/DIf the efficiency is taken into account and it is assumed that L 1.66 mHpthe typical con ..
TUSB2077A-TUSB2077APT
7-Port USB Hub W/Optional Serial EEPROM Interface
Personal
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TUSB2077A7-Port Hub Modem
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Right Speaker
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Left Speaker
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TUSB2077A7-Port Hub
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TUSB2077ASLLS414F –MARCH 2000–REVISED AUGUST 2015
TUSB2077A 7-Port Hub for the Universal Serial Bus With Optional
Serial EEPROM Interface Features 2 Applications Fully Compliant With the USB Specificationasa • Computer Systems
Full-Speed Hub: TID #20240226 • Docking Stations Integrated USB Transceivers
Description• 3.3-V Low-Power ASIC Logic
The TUSB2077A hubisa 3.3-V CMOS device that• Two Power Source Modes providesupto seven downstream portsin compliance– Self-Powered Mode Supporting Seven with the USB 2.0 specification. Because this deviceisDownstream Ports implemented witha digital state machine insteadofa
microcontroller,no software programmingis required.– Bus-Powered Mode Supporting Four
Fully compliant USB transceivers are integrated intoDownstream Ports the ASIC forall upstream and downstream ports. The• All Downstream Ports Support Full-Speed and downstream ports support full-speed and low-speedLow-Speed Operations devices by automatically setting the slew rate• Power Switching and Overcurrent ReportingIs accordingto the speedof the device attachedto the
Provided Gangedor Per Port ports. The configurationof the BUSPWR terminal
selects either the bus-poweredor self-powered mode.• Supports Suspend and Resume Operations The introductionof the DP0 pull-up resistor disable• Suspend Status Pin Available for External Logic terminal, DP0PUR, makes it much easier toPower Down implement an onboard bus/self-power dynamic- Supports Custom VendorID and ProductID With switching circuitry. The three-LED indicator control
External Serial EEPROM output pins also enable the implementation of
visualized status monitoring of the hub and its• 3-State EEPROM Interface Allows EEPROM downstream ports. With these new function pins, theSharing end equipment vendor can considerably reduce the• Push-Pull Outputs for PWRON Eliminate the Need total board cost while adding additional product value.for External Pullup Resistors Noise Filteringon OVRCUR Provides Immunityto
Device Information(1)Voltage Spikes Supports 6-MHz Operation Througha Crystal
Inputora 48-MHz Input Clock (1) Forall available packages, see the orderable addendumat
the endofthe data sheet.• New Functional Pins Introducedto Reduce the
Board Material Cost
USB-Tiered Configuration Example– 3 LED Indicator Control Outputs Enable
Visualized Monitoringof6 Different Hub/Port
Status (HUBCFG, PORTPWR, PORTDIS) Output Pin Availableto Disable External Pullup DP0for 15 ms After Resetor After and Enable Easyof Onboard Bus/Self-Power
