Nexperia USA Inc. 74LV1T126GXH

Overview

74LV1T126GXH from Nexperia is a single-supply, 5-terminal CMOS level-translating buffer/line driver with 3-state output, supporting bidirectional voltage translation (e.g., 1.8 V ↔ 3.3 V) across V_CC = 1.6 V to 5.5 V, 5 V-tolerant inputs, and operation from –40 °C to +125 °C - used in portable logic interfacing between mixed-voltage subsystems.

For engineers reviewing the 74LV1T126GXH datasheet, 74LV1T126GXH pinout, 74LV1T126GXH application, or 74LV1T126GXH equivalent, key selection criteria include input threshold compatibility at low V_CC, 3-state enable timing (t_en/t_dis), output drive capability (±5.5 mA at 3.3 V), thermal-enhanced X2SON5 package footprint, and ESD robustness (HBM >2000 V).

Technical Context

The device implements a single-channel unidirectional buffer with active-low 3-state control (OE), where output logic level is referenced to V_CC and input thresholds scale with supply voltage - enabling up-translation (e.g., 1.8 V input → 3.3 V output at V_CC = 3.3 V) and down-translation (e.g., 3.3 V input → 1.8 V output at V_CC = 1.8 V). Input pins tolerate up to 7 V independent of V_CC.

Functional behavior follows a simple truth table: OE = HIGH enables pass-through (A → Y); OE = LOW forces high-impedance (Z) output. Propagation delay ranges from 3.2 ns (V_CC = 5.0 V, C_L = 15 pF) to 11.6 ns (V_CC = 1.8 V, C_L = 30 pF), with enable/disable times tightly specified across temperature and load conditions.

Key Specifications

Pinout & Package

X2SON5 (SOT1226-3) package: 0.8 mm × 0.8 mm × 0.32 mm body, no leads, 5 copper terminals, thermal-enhanced construction for improved power dissipation in space-constrained designs.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar level-translating buffer applications.

Compared with SN74LVC1T45DBVR and TXB0101DCKR, the 74LV1T126GXH offers deterministic unidirectional timing, smallest footprint (0.64 mm²), and lowest dynamic power - making it optimal for space-constrained, timing-sensitive voltage translation where OE control is available.

Availability

74LV1T126GXH is available at Aetrix Electronics and suitable for portable USB-C adapters, industrial PLC I/O modules, notebook embedded controller buses, and telecom SFP+ module management requiring stable component supply across extended temperature and mixed-voltage environments.

Supply support for 74LV1T126GXH 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 leading global semiconductor expert focused on high-volume, high-reliability logic, discrete, and MOSFET solutions for automotive, industrial, and consumer markets.

The 74LV1T series targets space- and power-constrained logic interfacing, delivering single-gate translating buffers in ultra-miniature packages for next-generation portable and industrial edge electronics.

FAQ

Can 74LV1T126GXH translate 5 V inputs down to 1.8 V outputs?

Yes. With V_CC = 1.8 V, the device accepts 5 V-tolerant inputs (up to 7 V) and produces 1.8 V CMOS-compatible outputs. The input threshold scales with V_CC, ensuring reliable recognition of 5 V logic HIGH even at minimum supply - verified across –40 °C to +125 °C per datasheet Table 7.

What is the maximum capacitive load the Y output can drive while maintaining timing specs?

The device is characterized up to 30 pF load capacitance. At V_CC = 3.3 V and C_L = 30 pF, t_pd ≤ 7.3 ns and t_dis ≤ 9.4 ns over temperature - matching typical PCB trace + IC input capacitance of modern microcontrollers and FPGAs without de-rating.

Does the X2SON5 package require special soldering or rework considerations?

Yes. The 0.32 mm height and leadless construction demand precise stencil aperture design (0.18 mm thickness, 0.25 mm × 0.25 mm openings) and nitrogen-reflow profiling to prevent tombstoning. Rework requires infrared localized heating and vacuum pickup due to thermal mass constraints - documented in Nexperia SOT1226-3 assembly guidelines.

Is 74LV1T126GXH suitable for automotive applications?

No. This variant is rated for –40 °C to +125 °C but is not AEC-Q200 qualified. Nexperia offers automotive-grade equivalents (e.g., 74LV1T126GW-Q100) with enhanced reliability testing and PPAP documentation - required for under-hood or safety-related vehicle systems.