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NXP PCA9545APW118 Four-Channel I2C Switch

The PCA9545A/45B/45C is a four-channel bidirectional I2C switch with interrupt logic and reset. It supports voltage level translation among 1.8 V, 2.5 V, 3.3 V, and 5 V systems, making it suitable for mixed voltage environments. Features include flexible channel selection via I2C, active LOW interrupt inputs, active LOW reset, and power-up default deselected channels. The device offers low Ron switches, robust ESD protection, and supports hot insertion with a wide operating voltage range of 2.3 V to 5.5 V, suitable for various digital communication applications.

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Source:Newark
Part No:PCA9545APW,118
Stock:429
Inv Date:06-09-2026
Price: Unit price: $2.42
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Part No:PCA9545APW,118
Stock:5806
Inv Date:06-10-2026
Price: Unit price: $2.39
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Part No:PCA9545APW,118
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Inv Date:06-09-2026
Price: Unit price: $1.13
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Part No:PCA9545APW,118
Stock:1164
Inv Date:06-10-2026
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NXP PCA9545APW118 Four-Channel I2C Switch Specifications:

  • Supply Voltage Range: 2.3 V to 5.5 V
  • Channel Configuration: 4 bidirectional channels
  • Interrupt Inputs: 4 active LOW inputs
  • Reset Input: Active LOW
  • On-State Resistance (Ron): 5 Ω at Vop = 3.6 V, 7 Ω at Vop = 2.3 V
  • Voltage Level Translation: Supports 1.8 V, 2.5 V, 3.3 V, 5 V
  • Power-On Reset: Internal reset, deselects all channels on power-up
  • ESD Protection: >2000 V HBM
  • Operating Temperature: -40°C to +85°C
  • Package Options: HVQFN20, TSSOP20, SO20
  • Control Register: Read/write via I2C; channel enable/disable
  • Built-in Interrupt Logic: Detects and reports device interrupts
  • Soldering Compatibility: Reflow, wave, with recommended PCB footprints

Buy the Buy NXP PCA9545A Part Number PCA9545APW118 Online

Purchase the NXP PCA9545A PCA9545APW118 online today and optimize your digital communication system. This four-channel I2C switch features interrupt logic, reset capability, and voltage level translation, making it ideal for complex, multilevel voltage environments. Its wide operating voltage range from 2.3 V to 5.5 V ensures compatibility with various devices, supporting hot insertion and providing robust ESD protection. Easy to integrate with multiple package options, the PCA9545A ensures reliable operation in industrial, consumer, and embedded systems, offering efficient control and enhanced system performance.

Order your NXP PCA9545A PCA9545APW118 today and enhance your I2C system with reliable four-channel switching, voltage translation, and robust interrupt management.

Frequently Asked Questions

Where can I buy NXP PCA9545APW118?

You can click on the BUY or RFQ button to purchase PCA9545APW118 from an authorized NXP distributor.

How do I troubleshoot issues or seek technical support for part PCA9545APW118?

You can download the PCA9545APW118 datasheet or visit the NXP website for support.

Who is the manufacturer of PCA9545APW118?

NXP

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