PCA9546APW,118
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NXP USA Inc. PCA9546APW,118

Manufacturer No:
PCA9546APW,118
Manufacturer:
NXP USA Inc.
Package:
Tape & Reel (TR)
Description:
IC INTERFACE SPECIALIZED 16TSSOP
Delivery:
Payment:
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Product Introduction

Overview

The PCA9546APW,118, manufactured by NXP USA Inc., is a quad bidirectional translating switch controlled via the I²C-bus. This component is designed to fan out the SCL/SDA upstream pair to four downstream pairs or channels, allowing for flexible and efficient communication in I²C-bus systems. The device is particularly useful in applications where multiple I²C devices need to be connected to a single I²C bus, enabling the selection of any individual SCx/SDx channel or combination of channels through a programmable control register.

Key Specifications

Parameter Value Unit
Number of Channels 4
Bus Type I²C, SMBus
Supply Voltage Range 2.3 to 5.5 V
Operating Temperature Range -40 to 85 °C
Package Type TSSOP16
Reset Input Active LOW
Power-On Reset (POR) Yes
ON-State Resistance 4 to 9 Ω (VDD = 4.5 to 5.5 V) Ω
Input/Output Capacitance 3 to 5 pF pF

Key Features

  • Quad Bidirectional Translating Switch: Allows the SCL/SDA upstream pair to fan out to four downstream pairs, enabling multiple I²C devices to be connected to a single I²C bus.
  • Programmable Control Register: Enables the selection of any individual SCx/SDx channel or combination of channels.
  • Active LOW Reset Input: Allows recovery from a situation where one of the downstream I²C-buses is stuck in a LOW state.
  • Power-On Reset (POR): Holds the device in a reset condition until VDD has reached the specified voltage level.
  • Low ON-State Resistance: Ensures minimal voltage drop across the switch, making it suitable for high-speed applications.

Applications

  • Multiplexing I²C Devices: Ideal for systems where multiple I²C devices need to share a single I²C bus, such as in industrial control systems, consumer electronics, and automotive applications.
  • Embedded Systems: Useful in embedded systems where space and component count need to be minimized while maintaining flexibility in I²C communication.
  • Automotive and Industrial Automation: Suitable for applications requiring robust and reliable I²C communication in harsh environments.

Q & A

  1. What is the primary function of the PCA9546APW,118?

    The primary function is to act as a quad bidirectional translating switch controlled via the I²C-bus, allowing the SCL/SDA upstream pair to fan out to four downstream pairs.

  2. What is the supply voltage range for the PCA9546APW,118?

    The supply voltage range is from 2.3 to 5.5 volts.

  3. How does the reset input work on the PCA9546APW,118?

    The reset input is an active LOW signal that can be used to recover from a bus fault condition by resetting the I²C-bus state machine and deselecting all channels.

  4. What is the purpose of the Power-On Reset (POR) in the PCA9546APW,118?

    The POR holds the device in a reset condition until VDD has reached the specified voltage level, ensuring proper initialization.

  5. What is the typical ON-state resistance of the PCA9546APW,118?

    The typical ON-state resistance is between 4 to 9 ohms when VDD is between 4.5 to 5.5 volts.

  6. What package type is the PCA9546APW,118 available in?

    The PCA9546APW,118 is available in a TSSOP16 package.

  7. Can the PCA9546APW,118 be used in automotive applications?

    Yes, it is suitable for automotive applications due to its robust and reliable performance in harsh environments.

  8. How does the programmable control register work in the PCA9546APW,118?

    The programmable control register allows the selection of any individual SCx/SDx channel or combination of channels, enabling flexible control over the I²C communication.

  9. What is the input/output capacitance of the PCA9546APW,118?

    The input/output capacitance is between 3 to 5 pF.

  10. Is the PCA9546APW,118 compatible with SMBus?

    Yes, it is compatible with both I²C and SMBus protocols.

Product Attributes

Applications:Translating Switch
Interface:I²C, SMBus
Voltage - Supply:2.3V ~ 5.5V
Package / Case:16-TSSOP (0.173", 4.40mm Width)
Supplier Device Package:16-TSSOP
Mounting Type:Surface Mount
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Similar Products

Part Number PCA9546APW,118 PCA9548APW,118 PCA9542APW,118 PCA9543APW,118 PCA9544APW,118 PCA9545APW,118 PCA9546APW,112
Manufacturer NXP USA Inc. NXP USA Inc. NXP USA Inc. NXP USA Inc. NXP USA Inc. NXP USA Inc. NXP USA Inc.
Product Status Active Active Active Active Active Active Obsolete
Applications Translating Switch Translating Switch 2-Channel I²C Multiplexer 2-Channel I²C Multiplexer Translating Switch 4-Channel I²C Switcher Translating Switch
Interface I²C, SMBus I²C, SMBus I²C, SMBus I²C I²C, SMBus I²C, SMBus I²C, SMBus
Voltage - Supply 2.3V ~ 5.5V 2.3V ~ 3.6V, 4.5V ~ 5.5V 2.3V ~ 5.5V 2.3V ~ 3.6V, 4.5V ~ 5.5V 2.3V ~ 3.6V, 4.5V ~ 5.5V 2.3V ~ 5.5V 2.3V ~ 5.5V
Package / Case 16-TSSOP (0.173", 4.40mm Width) 24-TSSOP (0.173", 4.40mm Width) 14-TSSOP (0.173", 4.40mm Width) 14-TSSOP (0.173", 4.40mm Width) 20-TSSOP (0.173", 4.40mm Width) 20-TSSOP (0.173", 4.40mm Width) 16-TSSOP (0.173", 4.40mm Width)
Supplier Device Package 16-TSSOP 24-TSSOP 14-TSSOP 14-TSSOP 20-TSSOP 20-TSSOP 16-TSSOP
Mounting Type Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount

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