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TCA9548APWR

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TSSOP24,,LOW VOLTAGE 8-CHANNEL I2C SWITCH WITH RESET

  • Package/Case :
  • TSSOP-24
  • Product Categories :
  • Multiplexer Switch ICs
  • RoHs Status:
  • Rohs
  • Marking Code:
  • PW548A
  • In-stock:
  • 5118

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TCA9548APWR Product Details

The TCA9548APWR device has eight bidirectional translating switches that can be controlledthrough the I2C bus. The SCL/SDA upstream pair fans out to eightdownstream pairs, or channels. Any individual SCn/SDn channel or combination of channels can beselected, determined by the contents of the programmable control register. These downstreamchannels can be used to resolve I2C slave address conflicts. Forexample, if eight identical digital temperature sensors are needed in the application, one sensorcan be connected at each channel: 0-7.

The system master can reset the TCA9548APWR in the event of a time-out or other improperoperation by asserting a low in the RESET causes the same reset and initialization to occurwithout powering down the part. This allows recovery should one of the downstreamI2C buses get stuck in a low state.

The pass gates of the switches are constructed so that the VCC pin can be used to limitthe maximum high voltage, which is passed by the TCA9548A. Limiting the maximum high voltage allowsthe use of different bus voltages on each pair, so that 1.8-V, 2.5-V or 3.3-V parts can communicatewith 5-V parts, without any additional protection. External pullup resistors pull the bus up to thedesired voltage level for each channel. All I/O pins are 5-V tolerant.

TCA9548APWR

Feature

  • 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 theI2C bus
  • Channel selection through an I2C Bus, in anycombination
  • Power up with all switch channels deselected
  • Low RON switches
  • Allows voltage-level translation between 1.8-V, 2.5-V, 3.3-V, and 5-Vbuses
  • No glitch on power up
  • Supports hot insertion
  • Low standby current
  • Operating power-supply voltage range of 1.65 Vto5.5 V
  • 5-V Tolerant inputs
  • 0- to 400-kHz Clock frequency
  • Latch-up performance exceeds 100 mA Per JESD 78, class II
  • ESD Protection exceeds JESD 22
    • ±2000-V Human-body model (A114-A)
    • 200-V Machine model (A115-A)
    • ±1000-V Charged-device model (C101)

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TCA9548APWR

TCA9548APWR Block Diagram
(Picture: Diagram)

Technical Parameters

  • Number of Channels
  • 8
  • Propagation Delay Time
  • 1 ns
  • Operating Supply Voltage
  • 1.65 V to 5.5 V
  • Operating Supply Current
  • 3 uA
  • Maximum Operating Temperature
  • + 85 C
  • Mounting Style
  • SMD/SMT
  • Package / Case
  • TSSOP-24
  • Minimum Operating Temperature
  • - 40 C
  • Packaging
  • Reel
  • Series
  • TCA9548A

TCA9548APWR Documents

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All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the TCA9548APWR we delivered, we will accept the replacement or return of the TCA9548APWR only when all of the below conditions are fulfilled:
(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.
(2)We are informed of the defect described above within 90 days after the delivery of TCA9548APWR.
(3)The TCA9548APWR is unused and only in the original unpacked packaging.
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(1)Inform us within 90 days
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Texas Instruments, Inc

TI
Texas Instruments Incorporated designs and manufactures analog technologies, digital signal processing (DSP) and microcontroller (MCU) semiconductors. TI is a leader in semiconductor solutions for analog and digital embedded and applications processing....
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