74LVCH1T45GM,115

Overview

The Nexperia 74LVCH1T45GM,115 is a single-bit dual-supply translating transceiver with 3-state outputs. It features two 1-bit input-output ports (A and B), a direction control input (DIR), and dual supply pins VCC(A) and VCC(B). Both supplies operate between 1.2 V and 5.5 V, supporting translation between nodes such as 1.2 V, 1.5 V, 1.8 V, 2.5 V, 3.3 V, and 5.0 V. Pins A and DIR reference VCC(A), while pin B references VCC(B). The device operates from -40 °C to +125 °C in an XSON-6 package.

Feature Summary

• Bidirectional level translation capability between any low voltage nodes within the 1.2 V to 5.5 V range.
• Active bus hold circuitry maintains unused or floating data inputs at valid logic levels.
• IOFF circuitry enables partial power-down mode by disabling outputs to prevent backflow current.
• High noise immunity with latch-up performance exceeding 100 mA per JESD 78 Class II.

Applications

• Partial power-down applications requiring controlled output disablement
• Suspend mode operations when one supply rail is at GND level
• Systems utilizing mixed voltage domains between 1.2 V and 5.5 V

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm the exact package variant and temperature rating. Ensure that the required operating conditions align with the specified limits for VCC(A) and VCC(B). Confirm compliance with relevant JEDEC standards and ESD protection requirements prior to integration into the design.

Selection Notes

Select this component for designs requiring bidirectional translation between disparate voltage domains without external resistors. The integrated bus hold feature simplifies PCB layout by eliminating the need for pull-up or pull-down components on floating lines. Verify that the maximum data rates meet the system requirements for the specific voltage translation scenario.

Part Context

This part belongs to the 74LVCH1T45 family of dual-supply translating transceivers manufactured by Nexperia. It shares functional characteristics with the 74LVC1T45 but includes active bus hold circuitry. The GM suffix indicates the XSON-6 package type, which provides a leadless surface-mount solution suitable for space-constrained applications.

Replacement Considerations

The 74LVC1T45GM,115 serves as a direct substitute, differing primarily by the absence of active bus hold circuitry. Other variants within the 74LVCH1T45 family are available in different packages such as TSSOP6 or XSON6 with varying dimensions.