PCA9546APW,112
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NXP USA Inc. PCA9546APW,112

Manufacturer No:
PCA9546APW,112
Manufacturer:
NXP USA Inc.
Package:
Bulk
Description:
MULTIPLEXER SWITCH ICS 4CH I2C S
Delivery:
Payment:
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Product Introduction

Overview

The PCA9546APW,112, produced by NXP USA Inc., is a quad bidirectional translating switch controlled via the I²C-bus. This device is designed to fan out the SCL/SDA upstream pair to four downstream pairs, or channels, allowing for flexible communication between multiple I²C slaves and a single I²C master. The PCA9546A is particularly useful in scenarios where multiple devices share the same I²C address or where voltage-level translation between different bus voltages is necessary.

Key Specifications

Parameter Value
Operating Power Supply Voltage 2.3 V to 5.5 V
Input Voltage Tolerance 5.5 V tolerant
Clock Frequency 0 Hz to 400 kHz
ESD Protection Exceeds 2000 V HBM (JESD22-A114), 1000 V CDM (JESD22-C101)
Latch-Up Performance Exceeds 100 mA (JESD78)
Standby Current Low standby current
Package Options SO16, TSSOP16, HVQFN16
Operating Temperature -40°C to 85°C

Key Features

  • Quad bidirectional translating switches controlled via the I²C-bus
  • I²C bus and SMBus compatible
  • Active-low reset input to recover from bus fault conditions
  • Three address pins allowing up to eight PCA9546A devices on the I²C bus
  • Channel selection via I²C bus, in any combination
  • Power-up with all switch channels deselected
  • Low RON switches
  • 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

Applications

  • Servers
  • Routers and telecom switching equipment
  • Factory automation
  • Products with I²C slave address conflicts (e.g., multiple identical temperature sensors)

Q & A

  1. What is the PCA9546APW,112 used for?

    The PCA9546APW,112 is used as a quad bidirectional translating switch to manage multiple I²C slaves with a single I²C master, allowing for voltage-level translation and addressing conflicts resolution.

  2. What is the operating power supply voltage range of the PCA9546APW,112?

    The operating power supply voltage range is from 2.3 V to 5.5 V.

  3. What is the clock frequency range supported by the PCA9546APW,112?

    The clock frequency range is from 0 Hz to 400 kHz.

  4. Does the PCA9546APW,112 support hot insertion?
  5. How does the PCA9546APW,112 handle bus fault conditions?

    The PCA9546APW,112 has an active-low reset input that can be used to recover from bus fault conditions by resetting the I²C state machine and deselecting all channels.

  6. What types of packages are available for the PCA9546APW,112?

    The PCA9546APW,112 is available in SO16, TSSOP16, and HVQFN16 packages.

  7. What is the operating temperature range of the PCA9546APW,112?

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

  8. Does the PCA9546APW,112 provide ESD protection?
  9. Can multiple PCA9546A devices be used on the same I²C bus?
  10. What happens during power-up of the PCA9546APW,112?

    During power-up, all switch channels are deselected, and the device is held in a reset condition until the power supply voltage reaches the power-on reset threshold.

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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Same Series
PCA9546AD,118
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PCA9546APW,118
PCA9546APW,118
IC INTERFACE SPECIALIZED 16TSSOP
PCA9546ABS,118
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IC INTFACE SPECIALIZED 16HVQFN
PCA9546AD,112
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IC INTERFACE SPECIALIZED 16SO

Similar Products

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

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