HomedatasheetPCA9546AD,118

PCA9546AD,118 Datasheet

Multiplexer Switch ICs
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Description

The PCA9546AD,118 is a quad bidirectional translating switch controlled via the I2C-bus. The SCL/SDA upstream pair fans out to four downstream pairs, or channels. Any individual SCx/SDx channel or combination of channels can be selected, determined by the contents of the programmable control register. An active LOW reset input allows the PCA9546A to recover from a situation where one of the downstream I2C-buses is stuck in a LOW state. Pulling the RESET pin LOW resets the I2C-bus state machine and causes all the channels to be deselected as does the internal Power-On Reset (POR) function. The pass gates of the switches are constructed such that the VDD pin can be used to limit the maximum high voltage which will be passed by the PCA9546A. This allows the use of different bus voltages on each pair, so that 1.8 V or 2.5 V or 3.3 V parts can communicate with 5 V parts without any additional protection. External pull-up resistors pull the bus up to the desired voltage level for each channel. All I/O pins are 5 V tolerant. PCA9546AD,118 Features • 1-of-4 bidirectional translating switches• I2C-bus interface logic; compatible with SMBus standards• Active LOW reset input• 3 address pins allowing up to 8 devices on the I2C-bus• Channel selection via I2C-bus, in any combination• Power-up with all switch channels deselected• Low Ron switches• Allows voltage level translation between 1.8 V, 2.5 V, 3.3 V and 5 V buses• No glitch on power-up• Supports hot insertion• Low standby current• Operating power supply voltage range of 2.3 V to 5.5 V• 5 V tolerant Inputs• 0 Hz to 400 kHz clock frequency• ESD protection exceeds 2000 V HBM per JESD22-A114, 200 V MM per JESD22-A115, and 1000 V CDM per JESD22-C101• Latch-up testing is done to JEDEC Standard JESD78 which exceeds 100 mA• Three packages offered: SO16, TSSOP16, and HVQFN16
Features

Parameters

[{"Name":"Propagation Delay Time","Value":"0.3 ns"},{"Name":"Operating Supply Voltage","Value":"2.3 V to 5.5 V"},{"Name":"Operating Supply Current","Value":"65 uA"},{"Name":"Maximum Operating Temperature","Value":"+ 85 C"},{"Name":"Minimum Operating Temperature","Value":"- 40 C"},{"Name":"","Value":""},{"Name":"","Value":""},{"Name":"","Value":""},{"Name":"","Value":""},{"Name":"","Value":""}]

Manufacturer information

ESTEK ELECTRONICS CO. LTD
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