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USB2503-HZH: 产品描述接口 - 专用 integrated usb 2.0 3 port hub; 产品类别半导体其他集成电路（IC）; 文件大小656KB，共42页; 制造商All Sensors; 标准

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USB2503-HZH概述

接口 - 专用 integrated usb 2.0 3 port hub

USB2503-HZH规格参数

参数名称	属性值
厂商名称	All Sensors
产品种类	接口 - 专用
RoHS	是
最大工作温度	+ 70 C
封装 / 箱体	QFN EP
封装	Reel
最小工作温度	0 C
安装风格	SMD/SMT
类型	Integrated USB Compatible 3 Port Hub

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USB2503/USB2503A

Integrated USB 2.0 Compatible 3-Port Hub

Highlights

• Integrated USB 2.0 Compatible 3-Port Hub

- 3 Transaction Translators for highest perfor-

mance

- High-Speed (480Mbits/s), Full-Speed

(12Mbits/s) and Low-Speed (1.5Mbits/s)

compatible

- Full power management with per port or

ganged, selectable power control

- Detects Bus-Power/Self-Power source and

changes mode automatically

• Complete USB Specification 2.0 Compatibility

- Includes USB 2.0 Transceivers

• VID/PID/DID, and Port Configuration for Hub via:

- Single Serial I

C EEPROM

- SMBus Slave Port

• Default VID/PID/DID, allows functionality when

configuration EEPROM is absent

• Hardware Strapping options allow for configura-

tion without an external EEPROM or SMBus Host

• On-Board 24MHz Crystal Driver Circuit or 24 MHz

external clock driver

• Internal PLL for 480MHz USB 2.0 Sampling

• Internal 1.8V Linear Voltage Regulator

• Integrated USB termination and Pull-up/Pull-down

resistors

• Internal Short Circuit protection of USB differential

signal pins

• 1.8 Volt Low Power Core Operation

• 3.3 Volt I/O with 5V Input Tolerance

• 48-Pin QFN RoHS compliant package



2007 - 2016 Microchip Technology Inc.

DS000002249A-page 1

USB2503/USB2503A

Table of Contents

1.0 Introduction ..................................................................................................................................................................................... 4

2.0 Pin Table 3-Port .............................................................................................................................................................................. 5

3.0 Pin Configuration 3-Port Hub .......................................................................................................................................................... 6

4.0 3-Port Hub Block Diagram .............................................................................................................................................................. 7

5.0 Functional Block Description ......................................................................................................................................................... 12

6.0 XNOR Test .................................................................................................................................................................................... 30

7.0 DC Parameters ............................................................................................................................................................................. 31

8.0 AC Specifications .......................................................................................................................................................................... 34

9.0 Package Outline ............................................................................................................................................................................ 35

Appendix A: Data Sheet Revision History ........................................................................................................................................... 37

The Microchip Web Site ...................................................................................................................................................................... 38

Customer Change Notification Service ............................................................................................................................................... 38

Customer Support ............................................................................................................................................................................... 38

Product Identification System ............................................................................................................................................................. 40



2007 - 2016 Microchip Technology Inc.

DS000002249A-page 3

USB2503/USB2503A

1.0

INTRODUCTION

The Microchip 3-Port Hub is fully compliant with the USB 2.0 Specification and will attach to a USB host as a Full-Speed

Hub or as a Full-/High-Speed Hub. The 3-Port Hub supports Low-Speed, Full-Speed, and High-Speed (if operating as

a High-Speed Hub) downstream devices on all of the enabled downstream ports.

A dedicated Transaction Translator (TT) is available for each downstream facing port. This architecture ensures maxi-

mum USB throughput for each connected device when operating with mixed-speed peripherals.

The Hub works with an external USB power distribution switch device to control V

BUS

switching to downstream ports,

and to limit current and sense over-current conditions.

All required resistors on the USB ports are integrated into the Hub. This includes all series termination resistors on D+

and D– pins and all required pull-down and pull-up resistors on D+ and D– pins. The over-current sense inputs for the

downstream facing ports have internal pull-up resistors.

Throughout this document the upstream facing port of the hub will be referred to as the upstream port, and the down-

stream facing ports will be called the downstream ports.

1.1

OEM Selectable Features

A default configuration is available in the USB2503/USB2503A following a reset. This configuration may be sufficient

for some applications. Strapping option pins make it possible to modify a limited sub-set of the configuration options.

The USB2503/USB2503A may also be configured by an external EEPROM or a microcontroller. When using the micro-

controller interface, the Hub appears as an SMBus slave device. If the Hub is pin-strapped for external EEPROM con-

figuration but no external EEPROM is present, then a value of ‘0’ will be written to all configuration data bit fields (the

hub will attach to the host with all ‘0’ values).

The 3-Port Hub supports several OEM selectable features:

• Operation as a Self-Powered USB Hub or as a Bus-Powered USB Hub.

• Operation as a Dynamic-Powered Hub (Hub operates as a Bus-Powered device if a local power source is not

available and switches to Self-Powered operation when a local power source is available).

• Multiple Transaction Translator (Multi-TT) or Single-TT support.

• Optional OEM configuration via I

C EEPROM or via the industry standard SMBus interface from an external

SMBus Host.

• Port power switching on an individual or ganged basis.

• Port over-current monitoring on an individual or ganged basis.

• Compound device support (port is permanently hardwired to a downstream USB peripheral device).

• Hardware strapping options enable configuration of the following features.

- Non-Removable Ports

- Port Power Polarity (active high or active low logic)

- Port Disable

- Ganged Vs Port power switching and over-current sensing

DS000002249A-page 4



2007 - 2016 Microchip Technology Inc.

USB2503-HZH相似产品对比

	USB2503-HZH	USB2503A-HZH
描述	接口 - 专用 integrated usb 2.0 3 port hub	usb 接口集成电路 usb 2.0 3 port
厂商名称	All Sensors	All Sensors
产品种类	接口 - 专用	USB 接口集成电路
RoHS	是	是
最大工作温度	+ 70 C	+ 70 C
封装 / 箱体	QFN EP	QFN EP
最小工作温度	0 C	0 C
安装风格	SMD/SMT	SMD/SMT
类型	Integrated USB Compatible 3 Port Hub	Integrated USB Compatible 3 Port Hub

USB2503-HZH

USB2503-HZH在线购买

USB2503-HZH概述

USB2503-HZH规格参数

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USB2503-HZH相似产品对比

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