PCA9543ADR
  • Share:

Texas Instruments PCA9543ADR

Manufacturer No:
PCA9543ADR
Manufacturer:
Texas Instruments
Package:
Tape & Reel (TR)
Description:
IC INTERFACE SPECIALIZED 14SOIC
Delivery:
Payment:
iso14001
iso45001
iso9001
iso13485

Product Introduction

Overview

The PCA9543ADR, produced by Texas Instruments, is a dual bidirectional translating switch controlled by the I2C bus. This component is designed to manage multiple I2C or SMBus channels, allowing for the selection of either individual or both channels through a programmable control register. It is particularly useful in scenarios where multiple devices share the same I2C bus, such as in servers, routers, and factory automation systems. The PCA9543ADR also features interrupt logic and a reset function, making it versatile for various applications involving I2C communication.

Key Specifications

Parameter Value Unit
Operating Power-Supply Voltage Range 2.3 to 5.5 V
Operating Temperature Range -40 to 85 °C
Package Type SOIC (D) -
Number of Pins 14 -
Clock Frequency 0 to 400 kHz -
ESD Protection 2000-V Human-Body Model, 1000-V Charged-Device Model -
I/O Tolerance 5.5 V -

Key Features

  • I2C Bus and SMBus Compatible
  • 1-of-2 Bidirectional Translating Switches
  • Two Active-Low Interrupt Inputs and One Active-Low Interrupt Output
  • Active-Low Reset Input to Recover from Bus-Fault Conditions
  • Two Address Pins Allowing up to Four Devices on the I2C Bus
  • Channel Selection Via I2C Bus in Any Combination
  • Power-up With All Switch Channels Deselected
  • Low RON Switches for Minimal Voltage Drop
  • Voltage-Level Translation Between 1.8-V, 2.5-V, 3.3-V, and 5-V Buses
  • No Glitch on Power-up and Supports Hot Insertion
  • Low Standby Current

Applications

  • Servers and Data Centers
  • Routers and Telecom Switching Equipment
  • Factory Automation Systems
  • Products With I2C Slave Address Conflicts (e.g., Multiple Identical Temperature Sensors)

Q & A

  1. What is the primary function of the PCA9543ADR?

    The PCA9543ADR is a dual bidirectional translating switch controlled by the I2C bus, allowing the selection and management of multiple I2C or SMBus channels.

  2. What is the operating voltage range of the PCA9543ADR?

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

  3. How many devices can be connected on the I2C bus using the PCA9543ADR?

    Up to four PCA9543ADR devices can be connected on the I2C bus, thanks to the two address pins.

  4. What is the purpose of the interrupt inputs and output on the PCA9543ADR?

    The two interrupt inputs (INT1–INT0) provide signals for each downstream pair, and the interrupt output (INT) acts as an AND of the two interrupt inputs.

  5. How does the PCA9543ADR handle voltage translation between different bus voltages?

    The PCA9543ADR allows voltage-level translation between 1.8-V, 2.5-V, 3.3-V, and 5-V buses without additional protection, using the VCC pin to limit the maximum high voltage.

  6. What is the role of the RESET input on the PCA9543ADR?

    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, resetting the I2C state machine and deselecting both channels.

  7. Is the PCA9543ADR compatible with SMBus?

    Yes, the PCA9543ADR is compatible with both I2C Bus and SMBus.

  8. What is the clock frequency range supported by the PCA9543ADR?

    The PCA9543ADR supports a clock frequency range of 0 to 400 kHz.

  9. Does the PCA9543ADR support hot insertion?

    Yes, the PCA9543ADR supports hot insertion.

  10. What is the ESD protection level of the PCA9543ADR?

    The PCA9543ADR has ESD protection exceeding 2000-V Human-Body Model and 1000-V Charged-Device Model.

Product Attributes

Applications:2-Channel I²C Multiplexer
Interface:I²C, SMBus
Voltage - Supply:2.3V ~ 5.5V
Package / Case:14-SOIC (0.154", 3.90mm Width)
Supplier Device Package:14-SOIC
Mounting Type:Surface Mount
0 Remaining View Similar

In Stock

$1.86
267

Please send RFQ , we will respond immediately.

Same Series
RD15S10HE2X/AA
RD15S10HE2X/AA
CONN D-SUB RCPT 15POS CRIMP
DD15S20JVL0/AA
DD15S20JVL0/AA
CONN D-SUB HD RCPT 15P SLDR CUP
DD26M20LV5Z
DD26M20LV5Z
CONN D-SUB HD PLUG 26P SLDR CUP
DD15S20LVL0
DD15S20LVL0
CONN D-SUB HD RCPT 15P SLDR CUP
RD15S10HV50/AA
RD15S10HV50/AA
CONN D-SUB RCPT 15POS CRIMP
DD15S20Z0X
DD15S20Z0X
CONN D-SUB HD RCPT 15P SLDR CUP
RD15S10HE30/AA
RD15S10HE30/AA
CONN D-SUB RCPT 15POS CRIMP
CBC13W3S10HT0/AA
CBC13W3S10HT0/AA
CONN D-SUB RCPT 13POS CRIMP
DD26M20HE20/AA
DD26M20HE20/AA
CONN D-SUB HD PLUG 26P SLDR CUP
CBC9W4S10HES/AA
CBC9W4S10HES/AA
CONN D-SUB RCPT 9POS CRIMP
CBC9W4S10HV5S/AA
CBC9W4S10HV5S/AA
CONN D-SUB RCPT 9POS CRIMP
DD26S20WE30/AA
DD26S20WE30/AA
CONN D-SUB HD RCPT 26P SLDR CUP

Similar Products

Part Number PCA9543ADR PCA9546ADR PCA9543AD
Manufacturer Texas Instruments Texas Instruments Texas Instruments
Product Status Active Active Active
Applications 2-Channel I²C Multiplexer Translating Switch 2-Channel I²C Multiplexer
Interface I²C, SMBus I²C, SMBus I²C, SMBus
Voltage - Supply 2.3V ~ 5.5V 2.3V ~ 5.5V 2.3V ~ 5.5V
Package / Case 14-SOIC (0.154", 3.90mm Width) 16-SOIC (0.154", 3.90mm Width) 14-SOIC (0.154", 3.90mm Width)
Supplier Device Package 14-SOIC 16-SOIC 14-SOIC
Mounting Type Surface Mount Surface Mount Surface Mount

Related Product By Categories

PTN3363BSMP
PTN3363BSMP
NXP USA Inc.
IC INTFACE SPECIALIZED 32HVQFN
AD9883ABSTZ-110
AD9883ABSTZ-110
Analog Devices Inc.
IC INTERFACE SPECIALIZED 80LQFP
LMH0340SQE/NOPB
LMH0340SQE/NOPB
Texas Instruments
IC INTERFACE SPECIALIZED 48WQFN
TMDS181RGZT
TMDS181RGZT
Texas Instruments
IC INTERFACE SPECIALIZED 48VQFN
NCN8025AMNTXG
NCN8025AMNTXG
onsemi
IC INTERFACE SPECIALIZED 24QFN
TMDS171RGZR
TMDS171RGZR
Texas Instruments
IC INTERFACE SPECIALIZED 48VQFN
DS250DF810ABVR
DS250DF810ABVR
Texas Instruments
IC INTFACE SPECIALIZED 135FCBGA
IP4786CZ32S118
IP4786CZ32S118
NXP USA Inc.
NOW NEXPERIA IP4786CZ32S - CONSU
LMH0384SQ
LMH0384SQ
National Semiconductor
LINE EQUALIZER
AD9883AKST-110
AD9883AKST-110
Analog Devices Inc.
IC FLAT PANEL INTERFACE 80-LQFP
PTN3356R1BSZ
PTN3356R1BSZ
NXP USA Inc.
IC INTFACE SPECIALIZED 32HVQFN
UJA1169TK/F/3Z
UJA1169TK/F/3Z
NXP USA Inc.
IC INTFACE SPECIALIZED 20HVSON

Related Product By Brand

ADS8342IPFBTG4
ADS8342IPFBTG4
Texas Instruments
IC ADC 16BIT SAR 48TQFP
TMS320F28377DGWTEP
TMS320F28377DGWTEP
Texas Instruments
NPI SOPRANO IHR4 RTM 12/31
MAX3243EIRHBRG4
MAX3243EIRHBRG4
Texas Instruments
IC TRANSCEIVER FULL 3/5 32VQFN
INA240A3PWR
INA240A3PWR
Texas Instruments
IC CURR SENSE 1 CIRCUIT 8TSSOP
TLV2781CDBVR
TLV2781CDBVR
Texas Instruments
IC OPAMP GP 1 CIRCUIT SOT23-5
LMH6672MRX/NOPB
LMH6672MRX/NOPB
Texas Instruments
IC OPAMP VFB 2 CIRCUIT 8SOPWRPAD
SN74ALVTH162827GR
SN74ALVTH162827GR
Texas Instruments
IC BUF NON-INVERT 3.6V 56TSSOP
CD4093BMT
CD4093BMT
Texas Instruments
IC GATE NAND 4CH 2-INP 14SOIC
REG1117A-1.8/2K5
REG1117A-1.8/2K5
Texas Instruments
IC REG LINEAR 1.8V 1A SOT223-4
LP38691DT-3.3/NOPB
LP38691DT-3.3/NOPB
Texas Instruments
IC REG LINEAR 3.3V 500MA TO252-3
TPS76801QDRG4
TPS76801QDRG4
Texas Instruments
IC REG LINEAR POS ADJ 1A 8SOIC
LP2985AITL-3.3/NOPB
LP2985AITL-3.3/NOPB
Texas Instruments
IC REG LINEAR 3.3V 150MA 5DSBGA