位置:TCA9548A_V01 > TCA9548A_V01详情

TCA9548A_V01中文资料

厂家型号

TCA9548A_V01

文件大小

2565.3Kbytes

页面数量

39

功能描述

TCA9548A Low-Voltage 8-Channel I2C Switch with Reset

数据手册

下载地址一下载地址二到原厂下载

简称

TI德州仪器

生产厂商

Texas Instruments

中文名称

美国德州仪器公司官网

LOGO

TCA9548A_V01数据手册规格书PDF详情

1 Features

• 1-to-8 Bidirectional translating switches

• I2C Bus and SMBus compatible

• Active-low reset input

• Three address pins, allowing up to eight

TCA9548A devices on the I2C bus

• Channel selection through an I2C Bus, in any

combination

• Power up with all switch channels deselected

• Low RON switches

• Allows voltage-level translation between 1.8V,

2.5V, 3.3V, and 5V buses

• No glitch on power up

• Supports hot insertion

• Low standby current

• Operating power-supply voltage range of

1.65V to 5.5V

• 5-V Tolerant inputs

• 0 to 400kHz Clock frequency

• Latch-up performance exceeds 100mA Per JESD

78, class II

• ESD Protection exceeds JESD 22

– ±2000V Human-body model (A114-A)

– 200V Machine model (A115-A)

– ±1000V Charged-device model (C101)

2 Applications

• Servers

• Routers (telecom switching equipment)

• Factory Automation

• Products with I2C target address conflicts (such as

multiple, identical temperature sensors)

3 Description

The TCA9548A device has eight bidirectional

translating switches 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. These downstream

channels can be used to resolve I2C target address

conflicts. For example, if eight identical digital

temperature sensors are needed in the application,

one sensor can be connected at each channel: 0-7.

The system controller can reset the TCA9548A in the

event of a time-out, or other improper operation by

asserting a low in the RESET input. Similarly, the

power-on reset deselects all channels and initializes

the I2C/SMBus state machine. Asserting RESET

causes the same reset and initialization to occur

without powering down the part. This allows recovery

if one of the downstream I2C buses get stuck in a low

state.

The pass gates of the switches are constructed so

that the VCC pin can be used to limit the maximum

high voltage, which is passed by the TCA9548A.

Limiting the maximum high voltage allows the use of

different bus voltages on each pair, so that 1.8V, 2.5V

or 3.3V parts can communicate with 5V parts, without

any additional protection. External pullup resistors

pull the bus up to the desired voltage level for each

channel. All I/O pins are 5V tolerant.

更新时间:2025-7-23 16:50:00
供应商 型号 品牌 批号 封装 库存 备注 价格
TI
25+23+
23742
绝对原装全新正品现货/优势渠道商、原盘原包原盒
TI
20+
DFN-24
4854
就找我吧!--邀您体验愉快问购元件!
TI
16+
VQFN
10000
原装正品
TI
23+
QFN
50000
全新原装正品现货,支持订货
TI
24+
VQFN-24
10000
低于市场价,实单必成,QQ1562321770
TI
19+;18+
QFN
30000
一级代理,专注军工、汽车、医疗、工业、新能源、电力
TI
21+
VQFN-24
2000
进口原装现货假一赔万力挺实单
TI
21+
QFN
10000
原装现货假一罚十
TI
22+
VQFN24
9000
只做原装假一罚十
TI
25+
QFN24
12800
公司只做原装 欢迎来电咨询。

TI相关芯片制造商

  • TI1
  • TI2
  • TIANBO
  • TIMEGUARD
  • TIMES
  • TIMOTION
  • TIP
  • TITAN
  • TITANMEC
  • TITAN-US
  • TKP
  • TKPLUSEMI

Texas Instruments 美国德州仪器公司

中文资料: 224245条

德州仪器(Texas Instruments),简称TI,是全球领先的半导体公司,为现实世界的信号处理提供创新的数字信号处理(DSP)及模拟器件技术。除半导体业务外,还提供包括传感与控制、教育产品和数字光源处理解决方案。TI总部位于美国德克萨斯州的达拉斯,并在25多个国家设有制造、设计或销售机构。 德州仪器(TI)是全球领先的数字信号处理与模拟技术半导体供应商,亦是推动因特网时代不断发展的半导体引擎。 ----作为实时技术的领导者,TI正在快速发展,在无线与宽带接入等大型市场及数码相机和数字音频等新兴市场方面,TI凭借性能卓越的半导体解决方案不断推动着因特网时代前进的步伐! ----TI预想未