74LVC1T45GW,125

Overview

The Nexperia 74LVC1T45GW,125 is a single-bit dual-supply translating transceiver with three-state outputs. It enables bidirectional level translation between two independent voltage domains, VCC(A) and VCC(B), both ranging from 1.2 V to 5.5 V. The device features a direction control input (DIR) that dictates data flow between port A and port B. It supports maximum data rates up to 420 Mbps for 3.3 V to 5.0 V translations. The component includes IOFF circuitry for partial power-down applications and operates within an ambient temperature range of -40 °C to +125 °C.

Feature Summary

• Bidirectional level translation capability between independent low-voltage nodes
• IOFF circuitry prevents damaging backflow current during partial power-down
• Suspend mode activates high-impedance state when either supply rail is at ground

Applications

• Translating signals between mixed 1.2 V, 1.5 V, 1.8 V, 2.5 V, 3.3 V, and 5.0 V logic systems
• Partial power-down applications requiring isolation of powered-down ports
• Bidirectional data transfer in embedded systems with varying voltage domains

Procurement Notes

Verify the specific package variant against the required footprint, as the GW suffix denotes the TSSOP6 (SOT363-2) package. Confirm that the application requires the standard LVC functionality rather than the LVCH variant, which includes active bus hold circuitry for floating inputs. Ensure the design accommodates the specified operating temperature range and supply voltage limits for both ports.

Selection Notes

Select this component when a single channel of bidirectional voltage translation is required between two distinct power domains. It is suitable for interfaces where the DIR pin can be actively controlled to manage data flow direction. Consider the LVCH version if the system requires internal bus holding to maintain valid logic levels on unused or floating inputs without external pull-up or pull-down resistors.

Part Context

This device belongs to the 74LVC family of low-voltage CMOS logic components manufactured by Nexperia. It is specifically designed as a translating transceiver to bridge different voltage standards in modern electronic designs. The part is available in multiple package options, including XSON variants, but the GW suffix identifies the thin shrink small outline plastic package.

Replacement Considerations

The 74LVCH1T45GW is a functional substitute within the same series, distinguished by the inclusion of active bus hold circuitry.