PCA9547PW,112
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NXP USA Inc. PCA9547PW,112

Manufacturer No:
PCA9547PW,112
Manufacturer:
NXP USA Inc.
Package:
Tube
Description:
IC INTERFACE SPECIALIZED 24TSSOP
Delivery:
Payment:
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Product Introduction

Overview

The PCA9547PW,112 is an octal bidirectional translating multiplexer controlled by the I²C-bus, manufactured by NXP USA Inc. This device is designed to fan out the SCL/SDA upstream pair to eight downstream pairs or channels, allowing for flexible communication between multiple devices on the I²C-bus. It supports voltage level translation between different bus voltages, such as 1.8 V, 2.5 V, 3.3 V, and 5 V, without additional protection. The PCA9547PW,112 is particularly useful in systems where multiple I²C devices need to be connected to a single I²C-bus master, and it ensures smooth communication by allowing only one channel to be selected at a time.

Key Specifications

Parameter Description
Package Type TSSOP24 (SOT355-1)
Operating Power Supply Voltage 2.3 V to 5.5 V
Clock Frequency 0 Hz to 400 kHz
ESD Protection Exceeds 2000 V HBM per JESD22-A114 and 1000 V CDM per JESD22-C101
Latch-up Testing Exceeds 100 mA per JEDEC Standard JESD78
Input Tolerance 5 V tolerant inputs
Temperature Range -40°C to +85°C
Address Pins 3 address pins allowing up to 8 devices on the I²C-bus
Reset Input Active LOW RESET input

Key Features

  • 1-of-8 bidirectional translating multiplexer
  • I²C-bus interface logic compatible with SMBus standards
  • Active LOW RESET input to recover from bus fault conditions
  • Channel selection via I²C-bus, one channel at a time
  • Power-up with all channels deselected except Channel 0 which is connected
  • Low Ron multiplexers for minimal voltage drop
  • Allows voltage level translation between 1.8 V, 2.5 V, 3.3 V, and 5 V buses
  • No glitch on power-up
  • Supports hot insertion
  • Low standby current

Applications

The PCA9547PW,112 is suitable for various applications where multiple I²C devices need to be connected to a single I²C-bus master. This includes:

  • Industrial automation systems
  • Automotive systems requiring multiple sensor and actuator control
  • Consumer electronics with multiple I²C peripherals
  • Medical devices with multiple I²C interfaces
  • Embedded systems requiring I²C bus expansion

Q & A

  1. What is the primary function of the PCA9547PW,112?

    The PCA9547PW,112 is an octal bidirectional translating multiplexer that fans out the SCL/SDA upstream pair to eight downstream pairs or channels, controlled by the I²C-bus.

  2. What are the supported voltage levels for the PCA9547PW,112?

    The device supports voltage level translation between 1.8 V, 2.5 V, 3.3 V, and 5 V buses.

  3. How many devices can be connected to the I²C-bus using the PCA9547PW,112?

    Up to 8 devices can be connected to the I²C-bus using the 3 address pins.

  4. What is the purpose of the RESET input on the PCA9547PW,112?

    The active LOW RESET input allows the device to recover from a situation where one of the downstream I²C-buses is stuck in a LOW state.

  5. What are the package options available for the PCA9547PW,112?

    The PCA9547PW,112 is available in TSSOP24 (SOT355-1) package.

  6. What is the operating temperature range of the PCA9547PW,112?

    The operating temperature range is -40°C to +85°C.

  7. Does the PCA9547PW,112 support hot insertion?

    Yes, the PCA9547PW,112 supports hot insertion.

  8. What is the clock frequency range supported by the PCA9547PW,112?

    The clock frequency range is 0 Hz to 400 kHz.

  9. What kind of ESD protection does the PCA9547PW,112 offer?

    The device offers ESD protection exceeding 2000 V HBM per JESD22-A114 and 1000 V CDM per JESD22-C101.

  10. Is the PCA9547PW,112 compatible with SMBus standards?

    Yes, the PCA9547PW,112 is compatible with SMBus standards.

Product Attributes

Applications:Translating Multiplexer
Interface:I²C, SMBus
Voltage - Supply:2.3V ~ 3.6V, 4.5V ~ 5.5V
Package / Case:24-TSSOP (0.173", 4.40mm Width)
Supplier Device Package:24-TSSOP
Mounting Type:Surface Mount
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In Stock

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PCA9547PW,112
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Similar Products

Part Number PCA9547PW,112 PCA9547PW,118 PCA9549PW,112
Manufacturer NXP USA Inc. NXP USA Inc. NXP USA Inc.
Product Status Obsolete Active Obsolete
Applications Translating Multiplexer Translating Multiplexer Translating Switch
Interface I²C, SMBus I²C, SMBus I²C, SMBus
Voltage - Supply 2.3V ~ 3.6V, 4.5V ~ 5.5V 2.3V ~ 3.6V, 4.5V ~ 5.5V 2.3V ~ 3.6V, 4.5V ~ 5.5V
Package / Case 24-TSSOP (0.173", 4.40mm Width) 24-TSSOP (0.173", 4.40mm Width) 24-TSSOP (0.173", 4.40mm Width)
Supplier Device Package 24-TSSOP 24-TSSOP 24-TSSOP
Mounting Type Surface Mount Surface Mount Surface Mount

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