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AT43301-AC The AT43301-AC is a 4-port USB hub controller from Microchip Technology, supporting USB 1.1 full-speed and low-speed data rates. It operates from 4.4V to 5.25V and is available in a 32-LQFP package.
Mfr Part #:

AT43301-AC

Available from 1 distributors
Mfr Name: Microchip Technology
Microchip Technology
The AT43301-AC is a 4-port USB hub controller from Microchip Technology, supporting USB 1.1 full-speed and low-speed data rates. It operates from 4.4V to 5.25V and is available in a 32-LQFP package.
✓ Total Stock: 20,089 pcs

AT43301-AC Available from 1 distributor

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✓ Non-Authorised
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Romaks Technologies ✓
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20,089 pcs
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AT43301-AC Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Current
Data Rate
Function
Interface
Lead Style
Mounting Type
Operating Temperature
Protocol
Supplier Device Package
Voltage
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AT43301-AC Description

Short technical summary and product information.

The AT43301-AC is a low-cost USB hub controller from Microchip Technology, compliant with USB Specification Rev 1.1. It integrates one upstream and four downstream ports, supporting both full-speed (12 Mb/s) and low-speed (1.5 Mb/s) data transfers. The device operates from a 4.4V to 5.25V supply and draws a typical supply current of 24 mA.

 

The controller features an on-chip 3.3V regulator, port overcurrent monitoring, and power switching, enabling both bus-powered and self-powered hub configurations. It is designed for cost-sensitive applications requiring reliable USB connectivity.

 

The AT43301-AC is offered in a 32-lead LQFP package (7x7 mm) with surface mount mounting. It operates over a temperature range of 0°C to 70°C. The device uses a 6 MHz oscillator, reducing EMI while internal circuitry operates at 48 MHz.

AT43301-AC Quick Information

Product Type: USB Hub Controller
Canonical Name: AT43301-AC USB Hub Controller
Subcategory: Interface Controllers

AT43301-AC Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

AT43301-AC Features

  • Compliant with USB Specification Rev 1.1.
  • Provides four downstream USB ports.
  • Supports full-speed (12 Mb/s) and low-speed (1.5 Mb/s) data rates.
  • Operates from 4.4V to 5.25V supply voltage.
  • Available in 32-lead LQFP package.

AT43301-AC Applications

  • USB hub for desktop and laptop computers.
  • Bus-powered USB hub for portable devices.
  • Self-powered hub for industrial USB applications.
  • Embedded USB hub in microcontroller-based systems.

AT43301-AC FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating voltage range of the AT43301-AC?

The AT43301-AC operates from 4.4V to 5.25V.

What is the operating temperature range of the AT43301-AC?

The operating temperature range is 0°C to 70°C.

What package does the AT43301-AC come in?

The AT43301-AC is available in a 32-LQFP (7x7 mm) package.

Is the AT43301-AC RoHS compliant?

The AT43301-AC is listed as RoHS3 Compliant, though this status is unverified.

How many downstream ports does the AT43301-AC have?

The AT43301-AC has four downstream ports.

What USB specification does the AT43301-AC support?

The AT43301-AC supports USB 1.1.

What data rates are supported by the AT43301-AC?

The AT43301-AC supports 12 Mb/s (Full Speed) and 1.5 Mb/s (Low Speed) data rates.

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