(China (Mainland))
Product Summary
The PCA9545AZQNR is a 4-channel I2C switch with interrupt logic and reset. 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. 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.
Parametrics
PCA9545AZQNR absolute maximum ratings: (1)VDD DC supply voltage: –0.5V to +7.0V; (2)VI DC input voltage: –0.5V to +7.0V; (3)II DC input current: ±20mA; (4)IO DC output current: ±25mA; (5)IDD DC Supply current: 100mA; (6)ISS DC Supply current: ±100mA; (7)Ptot total power dissipation: 400mW; (8)Tstg Storage temperature range: –60℃ to +150℃; (9)Tamb Operating ambient temperature: –40℃ to +85℃.
Features
PCA9545AZQNR features: (1)1-of-4 bi-directional translating switches; (2)I2C interface logic; compatible with SMBus standards; (3)4 active low interrupt inputs; (4)Active low interrupt output; (5)Active low reset input; (6)2 address pins allowing up to 4 devices on the I2C bus; (7)Channel selection via I2C bus, in any combination; (8)Power up with all switch channels deselected; (9)Low RDSON switches; (10)Allows voltage level translation between 1.8V, 2.5V, 3.3V and 5V buses; (11)No glitch on power-up; (12)Supports hot insertion; (13)Low stand-by current; (14)Operating power supply voltage range of 2.3V to 5.5V; (15)5V tolerant Inputs; (16)0 to 400 kHz clock frequency; (17)ESD protection exceeds 2000 V HBM per JESD22-A114, 150V MM per JESD22-A115 and 1000V per JESD22-C101; (18)Latch-up testing is done to JESDEC Standard JESD78 which exceeds 100mA; (19)Package Offer: SO20, TSSOP20.
Diagrams
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 PCA9545AZQNR |
Texas Instruments |
Multiplexer Switch ICs 4-Ch I2C & SMBus Multiplexer |
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Translation - Voltage Levels I2C Translator 8-Pin |
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Translation - Voltage Levels DUAL I2C/SMBUS VOLT TRANSL |
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Translation - Voltage Levels DUAL I2C/SMBUS VOLT TRANSL |
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PCA9306DC1,125 |
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Translation - Voltage Levels DUAL I2C/SMBUS VOLT |
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PCA9306DC1/DG,125 |
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Translation - Voltage Levels Dual bdrctnl I2C-bus & vltg-lvl trnsltr |
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