4 Channel I2C bus Switch
PI4MSD5V9545A
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Description
PI4MSD5V9545A
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4 Channel I2C bus Switch with Interrupt Logic and Reset
Features
1-of-4 bidirectional translating multiplexer
I2C-bus interface logic Operating power supply voltage :1.65 V to 5.5 V Allows voltage level translation between 1.2V,
Description
The PI4MSD5V9545A is a quad 1-of-4 bidirectional translating switch, controlled via the I2C bus. The SCL/SDA upstream pair fans out to four SCx/SDx downstream pairs, or channels.
1.8V,2.5 V, 3.3 V and 5 V buses Low standby current Low Ron switches
Channel selection via I2C bus Power-up with all multiplexer channels deselected Capacitance isolation when channel disabled
No glitch on power-up Supports hot insertion 5 V tolerant inputs
0 Hz to 400 kHz clock frequency ESD protection exceeds 8000 V HBM per JESD22-
Any individual SCx/SDx channel or combination of channels can be selected, determined by the contents of the programmable control register. Four interrupt inputs, INT0 to INT3, one for each of the downstream pairs, are provided. One interrupt output, INT, acts as an AND of the four interrupt inputs.
An active LOW reset input allows the PI4MSD5V9545A to recover from a...
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