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TCA9548A_V01中文资料
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.
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。 |
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TCA9548A_V01 芯片相关型号
- 342-025-500-101
- 342-025-500-102
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- CIM-9-65-70-36-AC30-F4-3
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- LWTN-4722
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- LWTN-4740/Q
- LWTN-4741
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- MLV-F-P/Q
- SR2100
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- TCA9548APWR
- TCA9548A-Q1
- TCA9548ARGER
- ULQ2003AN
Datasheet数据表PDF页码索引
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Texas Instruments 美国德州仪器公司
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