NLSX4378ABFCT1G

Translators, Level Shifters Overview

The NLSX4378ABFCT1G is a 4-bit dual-supply level translator featuring bidirectional auto-sensing capabilities without requiring a directional control pin. It supports configurable supply rails VCC and VL ranging from 1.65 V to 5.5 V, enabling translation between lower, higher, or equal voltage logic signals in either direction. The device provides open-drain outputs with integrated 10 kΩ pullup resistors on all I/O lines, making it suitable for applications like I2C buses. It guarantees a maximum data rate of 24 Mb/s in rail-to-rail driving configurations and includes an overvoltage-tolerant enable input.

Translators, Level Shifters Feature Summary

• Bidirectional auto-sensing architecture eliminates the need for external directional control pins
• Configurable dual-supply operation allows V_L to be less than, greater than, or equal to V_CC
• Integrated 10 kΩ pullup resistors on all I/O lines simplify circuit design for open-drain applications
• Nonpreferential power-up sequencing ensures safe operation during variable supply ramp rates

Translators, Level Shifters Applications

• I2C communication bus level translation
• SMBus and PMBus interface adaptation
• Low voltage ASIC level translation
• Mobile phones, PDAs, and cameras

Translators, Level Shifters Procurement Notes

Verify the specific BFCT1G suffix indicates the Bump12 package with backside laminate coating and tape & reel shipping quantity of 3000 units. Confirm RoHS compliance and Pb-free status as stated in the ordering information. Ensure the application environment stays within the recommended operating temperature range of -55°C to +125°C for full parameter validity.

Translators, Level Shifters Selection Notes

Select this component when interfacing systems with independent power domains where voltage levels vary between 1.65 V and 5.5 V. The auto-sensing feature simplifies PCB layout by removing direction control traces. Verify that the required data rate does not exceed 24 Mb/s for rail-to-rail driving or 2 Mb/s for open-drain configurations. Consider the small Bump12 package dimensions for space-constrained mobile designs.

Translators, Level Shifters Part Context

This part belongs to the NLSX4378A family of 4-bit level translators manufactured by onsemi. It utilizes a flip-chip Bump12 package (CASE 499AU) measuring 2.02 x 1.54 mm. The device is designed for high-speed digital interfaces requiring reliable voltage shifting between disparate logic families or power supplies in portable electronics.

Translators, Level Shifters Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.