TYPE | DESCRIPTION |
---|
Mounting Style | Surface Mount |
Number of Pins | 20 Pin |
Supply Voltage (DC) | 3.30 V |
Case/Package | TSSOP |
Contacts Type | 4PST |
Supply Current | 10.0 µA |
Number of Circuits | 1 Circuit |
Number of Positions | 20 Position |
Operating Temperature (Max) | 85 ℃ |
Operating Temperature (Min) | -40 ℃ |
Supply Voltage | 2.3V ~ 5.5V |
TYPE | DESCRIPTION |
---|
Product Lifecycle Status | Unknown |
Packaging | Each |
Operating Temperature | -40℃ ~ 85℃ |
The PCA9544APW is a 4-channel I²C-bus Multiplexer with interrupt logic controlled via the I²C-bus. The SCL/SDA upstream pair fans out to four 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. Four interrupt inputs, INT0 to INT3, one for each of the SCx/SDx downstream pairs, are provided. One interrupt output, INT which acts as an AND of the four interrupt inputs, is provided. A power-on reset function puts the registers in their default state and initializes the I²C-bus state machine with no channels selected.
● 4 Active low interrupt inputs
● Active low interrupt output
● 4 Address pins allowing up to 8 devices on the I²C-bus
● Power-up with all switch channels deselected
● Low RON switches
● No glitch on power-up
● Supports hot insertion
● Low standby current
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