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PCA9545APW - NXP

Description: 4-channel I2C-bus switch with interrupt logic and reset

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PCA9545APW Details

  • Manufacturer Part Number:

    PCA9545APW

  • 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:

    Thailand

  • HTS Code:

    8542.39.00.01

  • Manufacturer:

    NXP Semiconductors

  • YTEOL:

    7

  • Analog IC - Other Type:

    DIFFERENTIAL MULTIPLEXER

  • JESD-30 Code:

    R-PDSO-G20

  • JESD-609 Code:

    e4

  • Length:

    6.5 mm

  • Moisture Sensitivity Level:

    1

  • Number of Channels:

    4

  • Number of Functions:

    1

  • Number of Terminals:

    20

  • On-state Resistance-Max (Ron):

    55 Ω

  • Operating Temperature-Max:

    85 °C

  • Operating Temperature-Min:

    -40 °C

  • Output:

    COMMON OUTPUT

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    TSSOP

  • Package Equivalence Code:

    TSSOP20,.25

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE, THIN PROFILE, SHRINK PITCH

  • Peak Reflow Temperature (Cel):

    260

  • Seated Height-Max:

    1.1 mm

  • Signal Current-Max:

    0.025 A

  • Supply Current-Max (Isup):

    0.03 mA

  • Supply Voltage-Max (Vsup):

    5.5 V

  • Supply Voltage-Min (Vsup):

    2.3 V

  • Supply Voltage-Nom (Vsup):

    2.5 V

  • Surface Mount:

    YES

  • Switch-off Time-Max:

    0.3 ns

  • Switch-on Time-Max:

    0.3 ns

  • 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

PCA9545APW Frequently Asked Questions (FAQs)

  • The PCA9545APW can support I2C bus frequencies up to 400 kHz, but it's recommended to limit the frequency to 100 kHz for reliable operation.
  • Yes, the PCA9545APW can switch between multiple I2C buses with different voltage levels, but the voltage on the SCL and SDA pins must be within the recommended operating range of 1.8 V to 5.5 V.
  • To ensure correct switching, make sure to follow the recommended switching sequence and timing in the datasheet, and use the EN pin to enable or disable the switch.
  • Yes, the PCA9545APW can handle clock stretching on each bus independently, but the master device must be able to handle the clock stretching requirements of each bus.
  • The PCA9545APW can drive I2C buses with capacitance up to 400 pF, but the actual capacitance limit may be lower depending on the specific application and operating conditions.

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PCA9545APW Overview

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About NXP

NXP Semiconductors is a leading manufacturer of semiconductor devices with a wide range of semiconductor solutions, including microcontrollers, sensors, connectivity solutions, power management ICs, and security solutions. These products are used in a variety of applications such as automotive, industrial automation, smart homes, mobile devices, and more. NXP Semiconductors is one of the world’s largest semiconductor companies and is headquartered in Eindhoven, the Netherlands.

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