PCA9641BSHP

Signal Buffers, Repeaters, Splitters Overview

The PCA9641BSHP is a 2-to-1 I2C master demultiplexer with an arbiter function, manufactured by NXP Semiconductors. It operates within a supply voltage range of 2.3 V to 3.6 V and supports clock frequencies up to 1 MHz. The device features low Ron switches and allows voltage level translation between 1.8 V, 2.3 V, 2.5 V, 3.3 V, and 3.6 V buses. It includes two active LOW interrupt outputs, an active LOW reset input, and software reset capabilities. The component is housed in a 16-HVQFN package (SOT758-1) and functions as a bidirectional master selector compatible with SMBus standards.

Signal Buffers, Repeaters, Splitters Feature Summary

• Intelligent arbitration for dual master I2C-bus applications to prevent race conditions
• Voltage level translation capability allowing communication between different bus voltages
• Configurable address decoding via four hardware address pins supporting multiple addresses
• Integrated interrupt logic with masking options and shared mailbox functionality

Signal Buffers, Repeaters, Splitters Applications

• High reliability systems requiring dual masters
• Gatekeeper multiplexer on long single bus
• Bus initialization/recovery for slave devices without hardware reset
• Sharing resources among masters without arbitration logic

Signal Buffers, Repeaters, Splitters Procurement Notes

Verify the specific ordering suffix HP indicates the HVQFN16 package variant when sourcing. Confirm RoHS compliance status through official manufacturer documentation or certificates of analysis. Ensure the supplier provides valid traceability data for the component batch. Cross-reference the manufacturer part number with distributor codes to avoid counterfeit risks during acquisition.

Signal Buffers, Repeaters, Splitters Selection Notes

Select this component for designs requiring arbitration between two I2C masters. Ensure the system voltage falls within the 2.3 V to 3.6 V operating range. Verify that external pull-up resistors are included in the design as internal ones are not present. Consider the thermal requirements of the HVQFN16 package if high power dissipation is expected in the application environment.

Signal Buffers, Repeaters, Splitters Part Context

The PCA9641BSHP belongs to the PCA9641 series of I2C bus controllers. It is specifically the HVQFN16 packaged version of the PCA9641BS type. This series serves as a bridge for managing multiple I2C masters accessing a common downstream bus, ensuring orderly access through hardware arbitration and software control registers.

Signal Buffers, Repeaters, Splitters Replacement Considerations

PCA9641BSJ is a previously available variant of the same functional type but may be discontinued. Check current availability status before substituting. No direct pin-compatible alternatives from other manufacturers are confirmed in the provided documentation.