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PCA9545APWR - Texas Instruments

Description: 4-Channel I2C And SMBus Multiplexer With Interrupt Logic And Reset Functions

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PCA9545APWR - Texas Instruments PCB footprint - Small Outline Packages - Small Outline Packages - PW(R-PDSO-G20)-2021
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PCA9545APWR - Texas Instruments  - 3D model - Small Outline Packages - PW(R-PDSO-G20)-2021
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PCA9545APWR Details

  • Manufacturer Part Number:

    PCA9545APWR

  • Brand Name:

    Texas Instruments

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Part Package Code:

    TSSOP

  • Package Description:

    TSSOP-20

  • Pin Count:

    20

  • Country Of Origin:

    Malaysia

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.90

  • Manufacturer:

    Texas Instruments

  • YTEOL:

    15

  • Family:

    9545

  • JESD-30 Code:

    R-PDSO-G20

  • JESD-609 Code:

    e4

  • Length:

    6.5 mm

  • Load Capacitance (CL):

    50 pF

  • Logic IC Type:

    MULTIPLEXER

  • Moisture Sensitivity Level:

    1

  • Number of Functions:

    4

  • Number of Inputs:

    4

  • Number of Outputs:

    1

  • Number of Terminals:

    20

  • Operating Temperature-Max:

    85 °C

  • Operating Temperature-Min:

    -40 °C

  • Output Polarity:

    TRUE

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    TSSOP

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE, THIN PROFILE, SHRINK PITCH

  • Peak Reflow Temperature (Cel):

    260

  • Power Supply Current-Max (ICC):

    12 mA

  • Prop. Delay@Nom-Sup:

    1 ns

  • Propagation Delay (tpd):

    1 ns

  • Qualification Status:

    Not Qualified

  • Seated Height-Max:

    1.2 mm

  • Supply Voltage-Max (Vsup):

    5.5 V

  • Supply Voltage-Min (Vsup):

    2.3 V

  • Supply Voltage-Nom (Vsup):

    2.5 V

  • Surface Mount:

    YES

  • Technology:

    CMOS

  • Temperature Grade:

    INDUSTRIAL

  • Terminal Finish:

    Nickel/Palladium/Gold (Ni/Pd/Au)

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    0.65 mm

  • Terminal Position:

    DUAL

  • Time@Peak Reflow Temperature-Max (s):

    30

  • Width:

    4.4 mm

PCA9545APWR Frequently Asked Questions (FAQs)

  • The PCA9545APWR can support I2C bus frequencies up to 400 kHz, but it's recommended to limit the frequency to 100 kHz for reliable operation.
  • To configure the PCA9545APWR in dual-bus mode, connect the SCL/SDA pins of the two buses to the corresponding pins on the PCA9545APWR, and use the EN pins to enable or disable each bus. The PCA9545APWR will automatically switch between the two buses based on the EN pin states.
  • The PCA9545APWR can drive I2C buses with capacitance up to 400 pF. Exceeding this capacitance may affect the signal integrity and reliability of the bus.
  • No, the PCA9545APWR is specifically designed for I2C bus switching and is not compatible with other bus protocols like SPI or UART. Using it with other protocols may not work or may cause damage to the device.
  • Ensure that the PCA9545APWR is powered from a stable 1.65 V to 5.5 V supply, and that the reset pin (RST) is properly connected to a pull-up resistor and capacitor to ensure a clean reset signal.

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PCA9545APWR Overview

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About Texas Instruments

Texas Instruments (TI) designs and manufactures semiconductors and integrated circuits for a wide range of applications. The company's product portfolio includes analog chips, which are essential for managing power and signal functions in electronic devices, and embedded processors, which serve as the brains in various systems, enabling functionality in everything from industrial equipment to consumer electronics. TI's innovations in semiconductor technology have made it a leader in the industry.

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