Nexperia USA Inc. 74AUP1T45GW,125

Overview

74AUP1T45GW,125 from Nexperia is a single-bit dual-supply translating transceiver with independent VCC(A) and VCC(B) rails (1.1 V to 3.6 V), enabling bidirectional level translation between mismatched logic domains (e.g., 1.8 V ↔ 3.3 V). It features Schmitt-trigger inputs for noise immunity, IOFF circuitry for partial power-down, and operates across –40 °C to +125 °C. Used in low-power I²C, GPIO, and mixed-voltage interface applications.

For engineers reviewing the 74AUP1T45GW,125 datasheet, 74AUP1T45GW,125 pinout, 74AUP1T45GW,125 application, or 74AUP1T45GW,125 equivalent, this page delivers verified functional behavior, validated pin-level roles, real-world voltage translation constraints, and design-critical timing under varying supply combinations and temperature extremes.

Technical Context

The device implements a direction-controlled bidirectional data path where DIR referenced to VCC(A) selects A→B (DIR = HIGH) or B→A (DIR = LOW); A port is referenced to VCC(A), B port to VCC(B). Both supplies operate independently within 1.1 V–3.6 V, supporting interoperability across JEDEC-standard voltage nodes (1.2 V, 1.5 V, 1.8 V, 2.5 V, 3.3 V).

Schmitt-trigger inputs ensure robust operation with slow-rising signals across full VCC ranges. The IOFF circuit disables outputs and limits backflow current when either VCC(A) or VCC(B) is at GND, placing both A and B in high-impedance OFF-state during suspend mode - critical for hot-swap and power-gating designs.

Key Specifications

Pinout & Package

TSSOP6 (SOT363-2) package: 6-pin plastic thin shrink small outline, 1.25 mm body width, lead pitch 0.5 mm, exposed pad not present.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar bidirectional level translation applications.

Compared with SN74LVC1T45DBVR and TXS0102DCUR, the 74AUP1T45GW,125 uniquely combines independent dual-supply operation, guaranteed IOFF shutdown, Schmitt-trigger noise immunity, and sub-μA ICC - making it the only choice for robust, low-power, mixed-voltage GPIO bridging with strict power sequencing constraints.

Availability

74AUP1T45GW,125 is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive body control modules, I²C voltage translation, and low-power wearable subsystems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74AUP1T45GW,125 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Nexperia is a global semiconductor expert focused on high-volume, high-reliability logic, analog, and MOSFET solutions, with leadership in automotive-qualified and energy-efficient components.

The 74AUP (Advanced Ultra-low Power) product line targets battery-powered and thermally constrained applications requiring nanowatt static power, wide supply flexibility, and robust operation across –40 °C to +125 °C.

FAQ

Can 74AUP1T45GW,125 translate between 1.1 V and 3.6 V simultaneously?

Yes - VCC(A) and VCC(B) may be set independently within 1.1 V to 3.6 V. When VCC(A) = 1.1 V and VCC(B) = 3.6 V, the device translates signals bidirectionally with VIH/VIL thresholds scaled to each rail. Propagation delay increases to ~31 ns (CL = 5 pF), but functionality remains fully specified per datasheet Table 8.

What happens to A and B pins when VCC(A) = 0 V and VCC(B) = 3.3 V?

In that condition, the IOFF circuit activates: both A and B enter high-impedance OFF-state, and leakage is limited to ±0.75 μA maximum. This prevents back-driving the 3.3 V domain from the unpowered 1.1 V side - a key requirement for safe power sequencing in multi-rail systems.

Does the DIR pin require a pull-up or pull-down resistor?

No - DIR has defined logic thresholds referenced to VCC(A): VIH ≥ 0.7 × VCC(A), VIL ≤ 0.3 × VCC(A). Driving DIR directly from a compatible GPIO (e.g., 1.8 V MCU controlling 1.8 V/3.3 V translation) eliminates external components and ensures deterministic direction control.

Is the TSSOP6 package (SOT363-2) RoHS and REACH compliant?

Yes - 74AUP1T45GW,125 is manufactured in Nexperia's ISO 9001-certified facilities and complies with RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006, including SVHC screening. Full compliance documentation is available upon request from Aetrix Electronics.