74AVCH1T45GM,115

Overview

The Nexperia 74AVCH1T45GM,115 is a single-bit dual-supply voltage level translator and transceiver housed in an XSON6 (SOT886) package. It supports bidirectional data translation with supply voltages ranging from 0.8 V to 3.6 V on both ports A and B. The device features 3-state outputs, active bus hold circuitry, and IOFF functionality for partial power-down applications. It complies with JEDEC standards for various voltage levels including JESD8-12 through JESD8C. Operating temperatures range from -40 °C to +125 °C.

Feature Summary

• Active bus hold circuitry maintains valid logic levels on unused or floating inputs without external resistors
• IOFF circuitry disables outputs to prevent damaging backflow current during partial power-down states
• Overvoltage tolerant inputs accept signals up to 3.6 V while operating within the specified supply range
• Low noise overshoot and undershoot performance ensures signal integrity across the entire voltage range

Applications

• Bidirectional logic level-shifting between systems with different supply voltages
• Unidirectional logic level-shifting applications requiring controlled direction
• Partial power-down mode operations where backflow current prevention is required

Procurement Notes

Verify the specific ordering suffix matches the required package variant, as the GM designation corresponds to the XSON6 (SOT886) form factor. Confirm that the temperature grade aligns with system requirements, noting availability in extended ranges. Ensure input signals remain within the absolute maximum ratings to prevent damage. Cross-reference the datasheet revision date to confirm functional specifications have not changed since previous procurement cycles.

Selection Notes

Select this component when a single-channel bidirectional translator is needed with low pin count constraints. The XSON6 package offers space efficiency for dense PCB layouts. Consider the dynamic characteristics and propagation delays relative to the target data rates. Verify that the DIR control signal timing allows sufficient enable/disable periods to avoid bus contention in bidirectional configurations.

Part Context

This device belongs to the 74AVCH logic family, designed for advanced voltage translation tasks. It serves as a bridge between low-voltage CMOS components and higher voltage interfaces. The inclusion of bus hold and IOFF features distinguishes it from basic translators by providing robust handling of floating lines and safe shutdown behaviors in complex multi-supply environments.

Replacement Considerations

Check for alternative packages such as TSSOP6 (GW) or other XSON6 variants (GN, GS) if footprint changes are permissible. Ensure substitute parts maintain compatible supply voltage ranges and thermal performance characteristics.