NLX2G66FCTAG

Overview

The NLX2G66FCTAG is a dual supply translating transceiver manufactured by onsemi. It features auto direction sensing to enable bidirectional voltage level translation between two independent logic buses. The device includes two input-output ports and one output enable input, with separate supply pins for each port. This architecture allows the A port to operate within a 1.2 V to 3.6 V range while the B port supports 1.65 V to 5.5 V. The component is designed for partial power-down applications using I_OFF circuitry to prevent backflow current. It is housed in a compact UMLP6 package.

Feature Summary

• Auto direction sensing enables seamless bidirectional data transfer without explicit direction control signals
• Dual supply architecture supports independent voltage domains for flexible interface compatibility
• I_OFF circuitry provides protection against damaging backflow currents during partial power-down states

Applications

• Bidirectional voltage level translation between low voltage nodes such as 1.2 V, 1.5 V, 1.8 V, 2.5 V, 3.3 V, and 5.0 V
• Interface connections in microcontroller systems requiring mixed voltage logic levels
• Partial power-down scenarios in portable electronic devices where power management is critical

Procurement Notes

Verify the specific suffix FCTAG against official onsemi documentation to confirm package type and tape-and-reel specifications. Ensure compliance with RoHS directives and check for automotive or industrial grade variants if operating conditions require extended temperature ranges. Confirm availability through authorized distributors to avoid counterfeit components.

Selection Notes

Select this component when bidirectional translation between dissimilar voltage domains is required without complex direction control logic. The auto-sensing feature simplifies PCB layout compared to manual direction-controlled translators. Verify that the target voltage ranges fall within the specified limits for both ports and consider ESD protection requirements for the application environment.

Part Context

This part belongs to the NXP (now onsemi) 2G series of low-voltage CMOS logic devices. These components are widely used in consumer electronics and industrial applications for interfacing different logic families. The NLX2G66 variant specifically addresses the need for robust level shifting in space-constrained designs.

Replacement Considerations

Check for direct pin-compatible alternatives within the same family, such as other NLX2G66 suffixes with different packaging options. Verify functional equivalence regarding voltage ranges and I_OFF capabilities before substitution.