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    The
    TCA9545APWR chip can be replaced with equivalent parts such as the TCA9545A or PCA9545APW, as they offer similar functionality. The PCA9545A series from Texas Instruments is an active and recommended alternative for new designs. 
    Equivalent and Alternative Chips 
    The primary manufacturer, Texas Instruments, lists the following as compatible or recommended alternatives: 
    • TCA9545A: This is the base product name and is available in the same TSSOP (PW) package as the TCA9545APWR.
    • PCA9545A: This part number is essentially identical in function to the TCA version and is actively recommended. Specific variants include:
      • PCA9545APWR (active part number, same as TCA9545APWR).
      • PCA9545ARGYR.
    • PI4MSD5V9545ALEX: Diodes Incorporated also offers a compatible IC bus switch as a potential alternative. 
    Key Features of the Chip 
    The TCA9545APWR and its equivalents are 4-channel I²C bus switches that serve as multiplexers/demultiplexers. 
    • Functionality: It allows a single I²C master to communicate with up to four different I²C buses or devices that might have the same address.
    • Voltage Translation: The chips feature built-in voltage-level translation, allowing 1.8-V, 2.5-V, 3.3-V, and 5-V parts to communicate without additional components.
    • Package: The TCA9545APWR comes in a 20-pin TSSOP package.
    • Reset Feature: Includes an active-low reset input that helps recover a bus if a downstream device becomes stuck in a low state. 
    Where to Purchase 
    Original and replacement chips are available from major electronic component distributors: 
    • DigiKey
    • Mouser Electronics, Inc.
    • TI.com (manufacturer's website)
    • Online marketplaces like eBay also carry the chips. 
    • TCA9545APWR | Original stock,Price - Ovaga Technologies
      Equivalent. The equivalent products of the TCA9545APWR chip are TCA9545A and PCA9545APW. Features. The TCA9545APWR is a multiplexe...
      Ovaga Technologies
    • TCA9545APWR Texas Instruments | Integrated Circuits (ICs)
      AT24CS64-XHM-B. IC EEPROM 64KBIT I2C 1MHZ 8TSSOP. Microchip Technology. $0.42000. TCA9535PWR. IC XPND 400KHZ I2C SMBUS 24TSSOP. Te...
      DigiKey
    • PCA9545A data sheet, product information and support | TI.com
      Package qty | Carrier * PCA9545APWR. ACTIVE. Same as: PCA9545APWR.B. 1ku | $0.626. 1-99$1.402 100-249$1.158 250-999$0.832 1,000+$0...
      TI.com
    Show all
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    TCA9545A | Buy TI Parts


    TI.com
    https://www.ti.com › part-details › TCA9545APWR
    TI.com
    https://www.ti.com › part-details › TCA9545APWR
    TCA9545APWR - 4-channel 1.65- to 5.5-V I2C/SMBus switch with interrupt, reset & voltage translation in a TSSOP (PW) package with 20 pins.
    $0.39 · Out of stock
    Missing: replace ‎| Show results with: replace

    TCA9545APWR Texas Instruments | Integrated Circuits (ICs)


    DigiKey
    https://www.digikey.com › products › detail › TCA954...
    DigiKey
    https://www.digikey.com › products › detail › TCA954...
    TCA9545APWR ; Type. Bus Switch ; Circuit. 2 x 1:4 ; Independent Circuits. 1 ; Current - Output High, Low. - ; Voltage Supply Source. Single Supply.See more
    $1.14 · In stock · $4.99 delivery · 30-day returns
    Missing: replace ‎| Show results with: replace

    TCA9545APWR Texas Instruments


    Mouser Electronics, Inc.
    https://www.mouser.com › ProductDetail › TCA9545A...
    Mouser Electronics, Inc.
    https://www.mouser.com › ProductDetail › TCA9545A...
    TCA9545APWR Texas Instruments Switch ICs - Various 4-CH I2C and SMBus S witch datasheet, inventory, & pricing.
    $1.22 · In stock · $4.99 delivery · 30-day returns
    Missing: chip ‎| Show results with: chip

    5Pcs TCA9545APWR TSSOP-20 Switch ICs - Various 4 ...


    eBay
    https://www.ebay.com › ... › Development Kits & Boards
    eBay
    https://www.ebay.com › ... › Development Kits & Boards
    5Pcs TCA9545APWR TSSOP-20 Switch ICs - Various 4-CH I2C and SMBus Switch ; Brand. Unbranded ; UPC. Does not apply ; Est. delivery. Mon, Dec 1 - Fri, Dec 12. From ...See more
    $21.37 · In stock · $8.21 delivery
    Missing: replace ‎| Show results with: replace

    tca9545apwr ic i2c sw 4ch w/reset 20tssop tca9545


    UTSource
    https://www.utsource.net › ... › IC Chips
    UTSource
    https://www.utsource.net › ... › IC Chips
    The TCA9545APWR is a versatile I2C switch IC with four channels and a reset function, encapsulated in a 20-TSSOP package. This type of IC is commonly used in ...See more
    $5.73 · In stock · 5.0(114,229) · $38.35 delivery
    Missing: chip ‎| Show results with: chip

    TCA9545APWR TCA9545A PW545A TSSOP20 #96-9


    eBay
    https://www.ebay.com › ... › Couplers
    eBay
    https://www.ebay.com › ... › Couplers
    Well packaged and arrived intact. Great seller. Would recommend. 5PCS NEW MM74C00N MM74C00 MM74COON MM74HC00N 74C00N DIP-14 IC CHIP #96-9 (#375902107636).See more
    $8.21$9 · In stock · $9.50 delivery
    Missing: replace ‎| Show results with: replace

    TCA9545APWR | Original stock,Price


    Ovaga Technologies
    https://www.ovaga.com › ... › Programmable Logic ICs
    Ovaga Technologies
    https://www.ovaga.com › ... › Programmable Logic ICs
    The TCA9545APWR chip is a multiplexer/demultiplexer IC that allows multiple devices to share a single I2C bus. It has 4 multiplexed channels, each with its own ...See more
    $1,814.00 · 4.8(10) · Free delivery · 30-day returns

    Original TCA9545APWR Price Advantage


    Alibaba.com
    https://www.alibaba.com › product-detail › Original-TC...
    Alibaba.com
    https://www.alibaba.com › product-detail › Original-TC...
    We can find and offer all the parts if it exsits in the world! Product Description. Original New IC Chip TCA9545APWR. Manufacturer Part Number, TCA9545APWR.

    Other Switch IC - ICYI


    icyi.com
    https://www.icyi.com › other-switch-ic
    icyi.com
    https://www.icyi.com › other-switch-ic
    NCA9548-DTSXR is a Replacement parts of TCA9548APWR/TCA9548AMRGER /TCA9548ARGER/PCA9548APW /PCA9548APWR/PCA9548APWRG4 /PCA9548ADB/PCA9548ADBG4 ...See more

    TCA9545A Low Voltage 4-channel I2C and SMbus Switch ...


    TI.com
    https://www.ti.com › lit › gpn
    TI.com
    https://www.ti.com › lit › gpn
    PDF
    I2C bus and SMBus compatible. • Four active-low interrupt inputs. • Active-low interrupt output. • Active-low reset input.See more
    Missing: replace ‎| Show results with: replace

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