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AW9548QNR

AW9548 带复位功能的 8 通道 I2C 总线开关

Datasheet :
Preview - AW9548QNR - Datasheet

Product details

Parameters

Channel 8
Addresses 8
Reset √
Interrupt ×
I2C Frequency（kHZ) 400
Temperature -40℃~125℃
Power Supply (Min) (V) 1.65
Power Supply (Max) (V) 5.5
Package (mm) QFN 4X4-24L

Package | Pins | Size

QFN 4X4-24L

Features

 1 对 8 双向电平转换开关  兼容 I2C 总线和 SMBus  低电平有效复位输入  三个地址引脚，允许在 I2C 总线上连接多达八个 AW9548 器件  通过 I2C 总线以任意组合方式选择通道  上电时所有开关通道均处于未选中状态  低导通电阻（RON）开关  400kHz I2C 接口  支持 1.8V、2.5V、3.3V 和 5V 总线之间的电压电平转换  1.65V~5.5V 电源供电  5.5V 耐压输入  上电无毛刺  支持热插拔  低待机电流  封装  AW9548TSR：TSSOP-24L  AW9548QNR：QFN 4X4-24L

Description

The AW9548 is an 8-channel, bidirectional translating switch that can be controlled through the I2C bus. The SCL/SDA upstream pair fans out to eight downstream pairs, or channels. Any individual SCn/SDn channel or combination of channels can be selected, determined by the contents of the programmable control register. The device offers an active-low RESETN input which resets the state machine and allows the AW9548 to recover from a situation where one of the downstream I2C buses get stuck in a low state. The state machine of the device can also be reset by cycling the power supply, VCC, also known as a power-on reset (POR). Both the RESETN function and a POR cause all channels to be deselected and initializes the I2C/SMBus state machine. The pass-gate transistors of the AW9548 are constructed so that the VCC pin can be used to limit the maximum high voltage which is passed by the AW9548. Limiting the maximum high voltage allows the use of different bus voltages on each pair, so that 1.8V or 2.5V or 3.3V parts can communicate with 5V parts without any additional protection. External pull-up resistors pull the bus up to the desired voltage level for each channel. All I/O pins are 5.5V tolerant.

Technical documentation
Type
Title
Language
Date
Datasheet DS_AW9548_EN_V1.3 英文   2026-09-20

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

Evaluation board

AW9545_9546_9548_EVB_V1.0 — AW9545_9546_9548_EVB_V1.0 is the EVB evaluation board for 1-4/1-8 channel bidirectional transfer switches.

EVB evaluation board for 1-4/1-8 channel bidirectional transfer switches.

View options
Software development

DRIVER OR LIBRARY

AW9548_Drivers — MCU drivers for AW9548 series.

AW9548 MCU Driver,includeing sample code,porting guide,debugging guide etc

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APPLICATION SOFTWARE&FRAMEWORK

AW954X_Driver — Android and other drivers for AW954X series

Android and other drivers for AW954X series, including example code, porting guide, debugging guide, etc.

View options
Hardware development

Evaluation board

AW9545_9546_9548_EVB_V1.0 — AW9545_9546_9548_EVB_V1.0 is the EVB evaluation board for 1-4/1-8 channel bidirectional transfer switches.

EVB evaluation board for 1-4/1-8 channel bidirectional transfer switches.

View options
Software development

DRIVER OR LIBRARY

AW9548_Drivers — MCU drivers for AW9548 series.

AW9548 MCU Driver,includeing sample code,porting guide,debugging guide etc

View options

APPLICATION SOFTWARE&FRAMEWORK

AW954X_Driver — Android and other drivers for AW954X series

Android and other drivers for AW954X series, including example code, porting guide, debugging guide, etc.

View options