NCT5948Y

Specialized Overview

The NCT5948Y is an 8:1 I2C/SMBus switch integrated circuit manufactured by Nuvoton Technology Corporation. Designed for signal routing in multi-device systems, it operates within a supply voltage range of 2.3 V to 5.5 V and supports data rates up to 400 kHz. The device features a maximum on-resistance of 55 Ohms and a maximum power consumption of 50 uA. It functions reliably across an industrial temperature range from -40°C to +85°C. The component is housed in a QFN-24 surface-mount package, facilitating compact PCB layouts for bus expansion applications.

Specialized Feature Summary

• Provides eight independent channels for I2C or SMBus signal switching
• Integrates reset functionality for system management
• Supports low-power operation with minimal quiescent current

Specialized Applications

• Bus expansion in embedded systems
• Multi-drop sensor networks
• I2C/SMBus bridge interfaces

Specialized Procurement Notes

Verify the specific ordering suffix against the official datasheet to ensure correct packaging and temperature grade. Confirm that the QFN-24 footprint matches the target PCB design. Check for RoHS compliance status if required by project specifications. Ensure compatibility with the host controller's voltage levels before integration.

Specialized Selection Notes

Select this component when an 8-channel I2C/SMBus multiplexer with integrated reset control is required. Verify that the 55 Ohm on-resistance meets the signal integrity requirements of the specific bus lines. Ensure the operating voltage range aligns with the system power rails. Consider the QFN-24 package constraints for thermal dissipation and assembly capabilities.

Specialized Part Context

This part belongs to Nuvoton's Switch ICs category, specifically designed for managing multiple I2C or SMBus devices. It serves as a solution for expanding bus connectivity in constrained environments. The device complements other interface components by providing reliable signal routing and isolation between master and slave devices.

Specialized Replacement Considerations

Consult the official Nuvoton documentation for direct pin-to-pin replacements. Verify functional equivalence regarding channel count, voltage range, and on-resistance. Cross-reference with similar 8:1 switches from other manufacturers only if electrical parameters match exactly.