Nexperia USA Inc. 74AUP1T45GN,132

Overview

74AUP1T45GN,132 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., 1.2 V ↔ 3.3 V). It features Schmitt-trigger inputs for noise immunity, IOFF circuitry for partial power-down protection, and operates across –40 °C to +125 °C. Used in low-power portable and industrial interface bridging.

For engineers reviewing the 74AUP1T45GN,132 datasheet, 74AUP1T45GN,132 pinout, 74AUP1T45GN,132 application, or 74AUP1T45GN,132 equivalent, key selection criteria include dual-rail voltage flexibility, sub-1 μA static ICC, IOFF-enabled suspend mode, and XSON6 (SOT1115) package compatibility with high-density PCB layouts.

Technical Context

This transceiver implements a direction-controlled, 3-state bidirectional data path where DIR input referenced to VCC(A) selects signal flow: HIGH enables A→B, LOW enables B→A. Both A and B I/Os are referenced to their respective supplies, eliminating need for external level-shifting components.

Schmitt-trigger inputs on all pins ensure robust operation with slow-rising signals across full supply range. The IOFF circuit actively disables outputs when either VCC(A) or VCC(B) is at GND, blocking backflow current and supporting hot-swap and power-gating use cases.

Key Specifications

Pinout & Package

XSON6 plastic extremely thin small outline package (SOT1115), no leads, 6 terminals, body size 0.9 mm × 1.0 mm × 0.35 mm, wettable flank option available.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-supply translating transceiver applications.

Compared with TXS0102DCUR and SN74LVC1T45DCKR, the 74AUP1T45GN,132 delivers superior low-power operation (1.4 μA vs. ≥5 μA), guaranteed 125 °C operation, and true IOFF protection - making it the only option qualified for automotive and industrial hot-swap scenarios requiring zero back-current.

Availability

74AUP1T45GN,132 is available at Aetrix Electronics and suitable for USB-C PD interfaces, industrial sensor hubs, automotive body controllers, and wearable health monitors requiring stable component supply across extended temperature and low-power constraints.

Supply support for 74AUP1T45GN,132 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 delivering high-performance, reliable, and efficient logic, discrete, and MOSFET solutions for automotive, industrial, and consumer markets.

The 74AUP (Advanced Ultra-low Power) product line targets battery-powered and thermally constrained applications requiring sub-microamp static current, wide voltage flexibility, and robust ESD/EMI performance.

FAQ

What is the maximum allowable voltage difference between VCC(A) and VCC(B)?

The datasheet specifies independent operating ranges (1.1 V to 3.6 V each) but does not define a maximum differential voltage limit. Absolute maximum ratings allow VCC(A) and VCC(B) to operate at any combination within –0.5 V to +4.6 V relative to GND. Therefore, a 2.5 V difference (e.g., VCC(A) = 1.1 V, VCC(B) = 3.6 V) is permitted and functionally supported per the recommended operating conditions and function table.

Can the 74AUP1T45GN,132 be used with unidirectional signals?

Yes - although designed for bidirectional use, it functions reliably as a unidirectional translator by fixing DIR to a constant logic level (HIGH for A→B, LOW for B→A) and using only one I/O direction. No internal contention occurs, and all electrical specs (propagation delay, drive strength, noise immunity) remain valid per the datasheet's unidirectional timing measurements.

Does the IOFF feature require external pull-up/down resistors?

No - IOFF is fully internal and active when either VCC(A) or VCC(B) is at GND (or ≤0.2 V). During suspend mode, both A and B terminals enter high-impedance OFF-state without external biasing. External resistors are unnecessary unless system-level weak pull-ups are required for defined logic states upstream of the transceiver.

How does Schmitt-trigger action improve noise immunity in this device?

Schmitt-trigger inputs provide hysteresis (typically ~0.3 × VCC), meaning VIH and VIL thresholds differ significantly - e.g., at VCC(A) = 1.8 V, VIH ≈ 1.26 V and VIL ≈ 0.54 V. This prevents multiple output toggles from slowly rising/falling or noisy signals, enabling clean edge detection even with >10 ns rise times and reducing susceptibility to crosstalk or EMI in dense PCB layouts.