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PI4MSD5V9540B

2-Channel I2C/SMBus Bus Multiplexer

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 Description

The PI4MSD5V9540B is a 1-of-2 bidirectional translating multiplexer, controlled via the I2C/SMBus.

The SCL/SDA upstream pair fans out to two SCx/SDx downstream pairs, or channels. Only one SCx/SDx channel is selected at a time, determined by the contents of the programmable control register. A power-on reset function puts the registers in their default state and initializes the I2C/ SMBus. state machine with no channels selected. The pass gates of the multiplexer are constructed such that the VCC pin can be used to limit the maximum high voltage that is passed by the PI4MSD5V9540B. This allows the use of different bus voltages on each SCx/SDx pair, so that 1.2V, 1.8V, 2.5V or 3.3V parts can communicate with 5V parts without any additional protection. External pull-up resistors can pull the bus up to the desired voltage level for this channel. All I/O pins are 5V tolerant.

Features

  • 1-of-2 bidirectional translating multiplexer
  • I2C-bus interface logic; compatible with SMBus standards
  • Operating power supply voltage range of 1.65V to 5.5
  • Allows voltage level translation between 1.2V, 1.8V, 2.5V, 3.3V and 5V buses
  • Low standby current
  • Low Ron switches
  • Channel selection via I2C-bus
  • Power-up with all multiplexer channels deselected
  • No glitch on power-up
  • Supports hot insertion
  • 5V tolerant inputs
  • 0 Hz to 400 kHz clock frequency
  • ESD protection exceeds 2000V HBM per JESD22-A114, and 1000 V CDM per JESD22-C101
  • Latch-up testing is done to JEDEC Standard JESD78 which exceeds 100 mA
  • Packages offered: SOIC (W8), MSOP (U8), TDFN2x3 (ZE8)

Product Specifications

Product Parameters

Ambient or Junction Temperature (°C) -40 to 85
Analog or Digital? Digital
Voltage 1.65V/5.5V
Single Ended Channels 2
Signal Type Single Ended
Configuration Multiplexer, 2-channel, 2:1
RailToRail 0
HotInsertion 1

Technical Documents

Design tool model software

Recommended Soldering Techniques

TN1.pdf

Additional Technical Documents are available upon request:
Application information, Evaluation board, and Other technical documents

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Orderable Part Number Status Package Environmental Compliance Packing Buy from Distributor /
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Qty. Carrier
PI4MSD5V9540BUEX Active MSOP-8 TPGP 2500 T&R

PI4MSD5V9540BUEX

Authorized Distributor Quantity Inventory Date Countries/Regions Buy Online
Avnet Asia 10000 1/19/2022 Hong Kong Buy Now
Digi-Key Electronics 10637 1/19/2022 Europe, Asia, North America Buy Now
Farnell, An Avnet Company 2308 1/19/2022 England Buy Now
Mouser Electronics Inc. 146 1/19/2022 South America, North America, Asia, Europe, Middle East Buy Now
Request Sample
PI4MSD5V9540BZEEX Active W-DFN2030-8 GREEN 3000 T&R

PI4MSD5V9540BZEEX

Authorized Distributor Quantity Inventory Date Countries/Regions Buy Online
Digi-Key Electronics 872 1/19/2022 Europe, Asia, North America Buy Now
Farnell, An Avnet Company 1900 1/19/2022 England Buy Now
Mouser Electronics Inc. 250 1/19/2022 South America, North America, Asia, Europe, Middle East Buy Now
Request Sample

Environmental Compliance Legend:
LFF: Pb-Free Finish and RoHS 5/6
TLFP: Totally Pb-Free Product and RoHS 6/6
LFGP: Pb-free Finish and Green Product, RoHS 5/6 and Halogen Free
TPGP: Totally Pb-Free and Green Product, RoHS 6/6 and Halogen Free
GREEN: Halogen-free and RoHS compliant
RoHS: RoHS compliant but NOT halogen-free

PCNs

Product Change Notices

PCN # Issue Date Implementation Date Subject
PCN-2510 2021-02-26 2021-05-26 Qualified Additional A/T Sites, Fab Site and Data Sheet Change
PCN-2493 2020-12-28 2021-03-28 Qualified Additional A/T Sites and Bill of Materials (BOM)