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PCA9540

Features: FEATURES1-of-2 bi-directional translating multiplexerChannel selection via I 2C busOperating supply voltage 2.5 to 3.6 VOperating temperature range 0°C to 70°CPower-up with all multiplexer channels deselectedLow on resistancePinoutSpecifications symbol partameter conditions RATIN...

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SeekIC No. : 004456295 Detail

PCA9540: Features: FEATURES1-of-2 bi-directional translating multiplexerChannel selection via I 2C busOperating supply voltage 2.5 to 3.6 VOperating temperature range 0°C to 70°CPower-up with all multiplexer...

PCA9540 Data Sheet

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Part Number:
PCA9540
Supply Ability:
5000

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  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

FEATURES
1-of-2 bi-directional translating multiplexer
Channel selection via I 2C bus
Operating supply voltage 2.5 to 3.6 V
Operating temperature range 0°C to 70°C
Power-up with all multiplexer channels deselected
Low on resistance


Pinout

Connection Diagram


Specifications

symbol partameter conditions RATING unit
VDD DC supply voltage   -0.5to +7.0   V
VI DC input voltage    -0.5 to+7.0  V
Ii DC input current   ±20  MA
IO DC output current   ±25  MA
I DC DC Supply current   ±100  MA
ISS DC Supply current   ±100  MA
Ptot total power dissipation   400  MW
Tstg Storage temperature range   60 to+150  °C
Tamb Operating ambient temperature   0to70  °C



Description

   The PCA9540 is a 1-of-2 bi-directional translating multiplexer,controlled via the I2C bus. The SCL/SDA upstream pair fans out to two SCx/SDx downstream pairs, or channels. Only one SCx/SDx channel of PCA9540 is selected at a time, determined by the contents of the programmable control register.

   The pass gates of the multiplexer are constructed such that the VDD pin can be used to limit the maximum high voltage which will be passed by the PCA9540. This allows the use of different bus voltages on each SCx/SDx pair, so that  3.3 V parts can communicate with 5 V parts without any additional protection. External pull-up resistors can pull the bus up to the desired voltage level for this channel.




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