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TUSB2077APTR Circuit Board Chips 7 Port Hub For Universal Serial Bus

Categories Circuit Board Chips
Brand Name: TI
Model Number: TUSB2077APTR
Certification: Original Factory Pack
Place of Origin: Original
MOQ: 5pcs
Price: Negotiation
Payment Terms: T/T, Western Union,PayPal
Supply Ability: 290PCS
Delivery Time: 1 Day
Packaging Details: please contact me for details
Supply voltage range, VCC: –0.5 V to 3.6 V
Input voltgage range, VI: –0.5 V to V CC + 0.5 V
Output voltage range, VO: –0.5 V to V CC + 0.5 V
Input clamp current, IIK: ±20 mA
Output clamp current, IOK, (VO < 0 V or VO > VCC: ±20 mA
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    TUSB2077APTR Circuit Board Chips 7 Port Hub For Universal Serial Bus


    TUSB2077APTR 7-PORT HUB FOR THE UNIVERSAL SERIAL BUS crt tv circuit boards universal tv circuit board

    ►Universal Serial Bus (USB) Version 1.1 Compliant

    ►Integrated USB Transceivers

    ►3.3-V Low Power ASIC Logic

    ►Two Power Source Modes

    – Self-powered Mode Supporting Seven Downstream Ports

    – Bus-powered Mode Supporting Four Downstream Ports

    ► All Downstream Ports Support Full-Speed and Low-Speed Operations

    ►Power Switching and Overcurrent Reporting is Provided Per Port or Ganged

    ►Supports Suspend and Resume Operations

    ►Suspend Status Terminal Avaliable for External Logic Power Down

    ►Supports Custom Vendor ID and Product ID With External Serial EEPROM

    ►3-State EEPROM Interface to Allow EEPROM Sharing


    description

    The TUSB2077A hub is a 3.3-V CMOS device that provides up to seven down stream ports in compliance with the USB version 1.1 specification. Because this device is implemented with a digital state machine instead of a microcontroller, no software programming is required. Fully compliant USB transceivers are integrated into the ASIC for all upstream and downstream ports. The downstream ports support both full-speed and low-speed devices by automatically setting the slew rate according to the speed of the device attached to the ports. The configuration of the BUSPWR terminal selects either the bus-powered or the self-powered mode. The introduction of the DP0 pull-up resistor disable pin, DP0PUR, makes it much easier to implement an on-board bus/self-power dynamic-switching circuitry. The three LED indicator control output pins also enable the implementation of visualized status monitoring of the hub and its downstream ports. With these new function pins, the end equipment vendor can considerably reduce the total board cost while adding additional product value.


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