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PCA9548A Low Voltage 8-Channel I2C Switch with Reset
Specifications:
Operating Voltage: 2.3 V to 5.5 V
Clock Frequency: 0 kHz to 400 kHz
Input Tolerance: 5 V
Package Options: SSOP, TVSOP, SOIC, TSSOP, VQFN
ESD Protection:
2000 V (Human-Body Model)
200 V (Machine Model)
1000 V (Charged-Device Model)
₹90.00 (Incl. GST)
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The PCA9548A is a versatile 8-channel I2C switch that enables bidirectional communication between multiple I2C buses. It resolves I2C slave address conflicts by providing separate downstream channels controlled via a programmable register. Supporting voltage-level translation, it ensures compatibility between different bus voltage levels, making it ideal for applications requiring flexible, reliable I2C communication.
Features:
Bidirectional Translating Switches: 1-of-8 configuration.
I2C/SMBus Compatibility: Seamless integration with standard protocols.
Reset Functionality: Active-low reset to recover from errors.
Hot Insertion: Supports adding devices without powering down.
Voltage-Level Translation: Works across 1.8 V, 2.5 V, 3.3 V, and 5 V buses.
Power-Up Behavior: Channels deselected by default for safety.
Low On-Resistance (RON): Ensures minimal signal degradation.
Standby Current: Low power consumption during idle state.
Expandable Addressing: Three hardware address pins allow up to eight PCA9548A devices on the same bus.
Applications:
Server and network equipment
Factory automation systems
Products with I2C slave address conflicts (e.g., multiple sensors)
Telecom switching equipment
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