Nexperia USA Inc. 74AXP1T45GWH

Overview

74AXP1T45GWH from Nexperia is a single-bit, dual-supply translating transceiver with 3-state output enabling bidirectional voltage-level translation between independent logic domains (e.g., 1.8 V ↔ 3.3 V). It features two data ports (A and B), direction control (DIR), and separate VCC(A) and VCC(B) supplies (0.9 V to 5.5 V each), with IOFF circuitry for partial power-down operation and glitch-free supply transitions up to 5.5 V/s. Used in mixed-voltage I²C, GPIO, and low-power sensor interface applications.

For engineers reviewing the 74AXP1T45GWH datasheet, 74AXP1T45GWH pinout, 74AXP1T45GWH application, or 74AXP1T45GWH equivalent, this page delivers verified electrical behavior across temperature (−40 °C to +125 °C), real-world propagation delay vs. supply pairing (e.g., A→B = 15 ns at VCC(A)=2.5 V/VCC(B)=3.3 V), IOFF leakage (< ±2 μA), and JEDEC-compliant input thresholds per voltage tier.

Technical Context

The device implements true bidirectional level translation using separate supply-referenced input/output structures: A and DIR pins are referenced to VCC(A), while B is referenced to VCC(B). Direction control is synchronous-HIGH on DIR enables A→B transmission; LOW enables B→A-with no internal latching or clocking.

Its patented glitch suppression prevents output disturbances during asymmetric power-up/down sequences, and the IOFF circuit actively disables outputs when either VCC(A) or VCC(B) drops to GND, forcing both A and B into high-impedance OFF-state and blocking damaging backflow current.

Key Specifications

Pinout & Package

TSSOP6 package (SOT363-2), 1.25 mm body width, 0.65 mm pitch, lead-free and RoHS compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TXB0101DCKR and SN74LVC1T45DBVR, the 74AXP1T45GWH uniquely supports asymmetric 0.9–5.5 V dual-rail operation with guaranteed glitch immunity, IOFF, and full −40 °C to +125 °C qualification-making it the only option for robust, high-reliability mixed-voltage industrial and automotive interfaces.

Availability

74AXP1T45GWH is available at Aetrix Electronics and suitable for industrial sensor hubs, automotive body control modules, portable medical wearables, and programmable logic controller I/O expansion requiring stable component supply across extended temperature and mixed-voltage conditions.

Supply support for 74AXP1T45GWH 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-performance, high-reliability essential semiconductors for automotive, industrial, and consumer markets.

The 74AXP series targets ultra-low-power, wide-voltage-level translation in space- and energy-constrained applications, emphasizing robustness across extreme temperatures and seamless integration into heterogeneous voltage architectures.

FAQ

Can 74AXP1T45GWH translate between 0.9 V and 5.0 V simultaneously?

Yes. VCC(A) and VCC(B) may be independently set to any value from 0.9 V to 5.5 V, including 0.9 V and 5.0 V. The device maintains valid logic thresholds, output drive strength, and timing performance across this full range, as verified in Tables 7–14 of the datasheet.

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

No. DIR has no internal termination and must be actively driven HIGH or LOW by the controlling logic. Leaving DIR floating is undefined and may cause unpredictable direction behavior or increased ICC due to input metastability.

What happens if VCC(A) = 0 V while VCC(B) = 3.3 V?

In suspend mode, both A and B ports enter high-impedance OFF-state, and IOFF limits leakage to ±2 μA max. This prevents back-current flow from the 3.3 V domain into the unpowered side, protecting downstream circuitry during partial power-down.

Is 74AXP1T45GWH compatible with I²C open-drain topologies?

Yes, when used in unidirectional configuration (e.g., DIR fixed HIGH for SDA_A→SDA_B). Its 3-state output and low VOL (≤0.8 V at 12 mA) meet I²C sink requirements. However, bidirectional I²C requires external pass-gate or dedicated I²C repeater ICs-this device does not auto-sense direction like TXB series.