74LVC1T45GN,132

Overview

The Nexperia 74LVC1T45GN,132 is a single-bit dual-supply translating transceiver with three-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, enabling translation between low voltage nodes including 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 supports bidirectional data transmission controlled by the DIR signal.

Feature Summary

• Bidirectional level translation capability between any combination of low voltage nodes ranging from 1.2 V to 5.5 V.
• IOFF circuitry enables partial power-down mode operation by disabling outputs to prevent damaging backflow current.
• Suspend mode functionality places both ports in a high-impedance OFF-state when either supply voltage reaches GND level.

Applications

• Partial power-down applications requiring isolation during power-off states
• Systems utilizing mixed voltage domains for bidirectional data transfer
• Interfaces connecting components operating at different supply voltages

Procurement Notes

Verify the specific suffix GN corresponds to the XSON6 package (SOT1115) with dimensions 0.9 x 1.0 x 0.35 mm. Confirm the ordering code matches the required temperature range of -40 °C to +125 °C. Ensure compatibility with the LVC logic family specifications before integration into designs requiring dual-supply translation.

Selection Notes

Select this component for designs requiring a single-channel translator with independent supply rails. The XSON6 package offers space efficiency for surface-mount applications. Verify that the application does not require active bus hold circuitry, as this feature is specific to the LVCH variant rather than the standard LVC version.

Part Context

This device belongs to the 74LVC/LCX/Z series of logic ICs manufactured by Nexperia. It is part of a family of dual-supply translating transceivers designed for low-voltage CMOS applications. The GN suffix denotes the specific XSON6 leadless package configuration suitable for compact PCB layouts.

Replacement Considerations

The 74LVCH1T45GN,132 serves as a functional substitute within the same package, offering additional active bus hold circuitry. Other variants such as 74LVC1T45GM or 74LVC1T45GW provide equivalent electrical performance in alternative package formats like XSON6 or TSSOP6.

FAQ

How is the data transmission direction controlled?

Direction is controlled by the DIR input pin. A HIGH level on DIR allows transmission from port A to port B, while a LOW level allows transmission from port B to port A.

What happens if one of the supply voltages drops to GND?

The device enters suspend mode. In this state, both port A and port B are placed in a high-impedance OFF-state to isolate the circuits.