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ISP1122

Features: · High performance USB hub device with integrated hub repeater, hub controller,Serial Interface Engine (SIE), data transceivers and 3.3 V voltage regulator· Complies with Universal Serial Bus Specification Rev. 1.1 and ACPI, OnNow and USB power management requirements· Configurable from ...

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SeekIC No. : 004381067 Detail

ISP1122: Features: · High performance USB hub device with integrated hub repeater, hub controller,Serial Interface Engine (SIE), data transceivers and 3.3 V voltage regulator· Complies with Universal Serial ...

ISP1122 Data Sheet

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Part Number:
ISP1122
Supply Ability:
5000

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  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

 · High performance USB hub device with integrated hub repeater, hub controller,Serial Interface Engine (SIE), data transceivers and 3.3 V voltage regulator
 ·  Complies with Universal Serial Bus Specification Rev. 1.1 and ACPI, OnNow and USB power management requirements
 ·  Configurable from 2 to 5 downstream ports with automatic speed detection
 ·  Internal power-on reset and low voltage reset circuit
 ·  Supports bus-powered, hybrid-powered and self-powered application
 ·  Individual or ganged power switching for downstream ports
 ·  Individual or global port overcurrent protection with built-in sense circuits
 ·  6 MHz crystal oscillator with on-chip PLL for low EMI
 ·  Visual USB traffic monitoring (GoodLink™) for hub and downstream ports
 ·  I2C-bus interface to read vendor ID, product ID and configuration bits from external EEPROM
 ·  Operation over the extended USB bus voltage range (4.0 to 5.5 V)
 ·  Operating temperature range -40 to +85 °C
 ·  8 kV in-circuit ESD protection for lower cost of external components
 ·  Full-scan design with high test coverage
 ·  Available in 32-pin SDIP, SO and LQFP packages.


Pinout

Connection Diagram


Specifications

Symbol Parameter Conditions Min Max Unit
VCC supply voltage   -0.5 +6.0 V
VI input voltage   -0.5 VCC+0.5 V
Ilatchup latch-up current VI < 0 or VI > VCC - 200 mA
Vesd electrostatic discharge voltage ILI < 15 A    [1][2]  - ±4000[3] V
Tstg storage temperature   -60 +150
Ptot total power dissipation   - 95 mW
[1] Equivalent to discharging a 100 pF capacitor via a 1.5 k resistor (Human Body Model).
[2] Values are given for device only; in-circuit Vesd(max) = ±8000 V.
[3] For open-drain pins Vesd(max) = ±2000 V.


Description

The ISP1122 is a stand-alone Universal Serial Bus (USB) hub device which complies with USB Specification Rev. 1.1. It integrates a Serial Interface Engine (SIE), hub repeater, hub controller, USB data transceivers and a 3.3 V voltage regulator. It has a configurable number of downstream ports, ranging from 2 to 5.

The ISP1122 can be bus-powered, self-powered or hybrid-powered. When it is
hybrid-powered the hub functions are powered by the upstream power supply (VBUS), but the downstream ports are powered by an external 5 Volt supply. The low power consumption in 'suspend' mode allows easy design of equipment that is compliant with the ACPI™, OnNow™ and USB power management requirements.

The ISP1122 has built-in overcurrent sense inputs, supporting individual and global overcurrent protection for downstream ports. All ports (including the hub) have GoodLink™ indicator outputs for easy visual monitoring of USB traffic. The ISP1122 has a serial I2C-bus interface for external EEPROM access and a reduced frequency (6 MHz) crystal oscillator. These features allow significant cost savings in system design and easy implementation of advanced USB functionality into PC peripherals.




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