PCA9846PWJ

Signal Switches, Multiplexers, Decoders Overview

The PCA9846PWJ is a quad-bidirectional translating switch controlled via the I2C bus. It fans out one upstream SCL/SDA pair to four downstream SCx/SDx channels, enabling multiple devices with identical addresses on a single bus and separating heavily loaded segments without a buffer. The device supports ultra-low voltage operation down to 0.8 V for next-generation CPU interfacing and allows voltage level translation between 0.8 V, 1.8 V, 2.5 V, and 3.3 V buses. It features Fast-mode Plus logic compatible with SMBus standards, an active LOW reset input, and two address pins allowing up to 16 devices. Operating supply ranges are 0.8 V to 3.6 V for VDD1 and 1.65 V to 3.6 V for VDD2, with an operating temperature range of -40 °C to +85 °C.

Signal Switches, Multiplexers, Decoders Feature Summary

• Ultra-low voltage operation down to 0.8 V for direct interface with modern CPUs
• Quad bidirectional translating switch supporting voltage level translation across 0.8 V, 1.8 V, 2.5 V, and 3.3 V buses
• Fast-mode Plus I2C-bus interface logic compatible with SMBus standards
• Active LOW reset input and internal Power-On Reset (POR) function

Signal Switches, Multiplexers, Decoders Applications

• I2C bus multiplexing to allow multiple devices with the same address on one bus
• Voltage level translation between different power domains
• Separating heavily loaded I2C bus segments into independent parts

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the ordering suffix 'J' corresponds to the TSSOP16 package in Reel 13" Q1/T1 packing method with a minimum order quantity of 2500 units. Confirm the specified temperature range is -40 °C to +85 °C. Ensure the component matches the standard mark requirements for NXP Semiconductors products.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when designing systems requiring ultra-low voltage interfaces down to 0.8 V or needing to translate between mixed voltage levels like 1.8 V and 3.3 V. It is suitable for applications demanding Fast-mode Plus speeds up to 1 MHz. Consider its ability to handle hot insertion due to deselected channels at power-on and its low standby current characteristics.

Signal Switches, Multiplexers, Decoders Part Context

The PCA9846 belongs to NXP's portfolio of I2C/I3C multiplexers and switches. It is designed to manage complex system interconnects by providing flexible channel selection and robust voltage translation capabilities. The device integrates control logic accessible via the I2C bus, including software reset and device ID functions, enhancing system management and diagnostic capabilities.

Signal Switches, Multiplexers, Decoders Replacement Considerations

Public confirmed substitute part numbers: PCA9846PWZ.