Nexperia USA Inc. 74LV1T126GWH

Overview

74LV1T126GWH from Nexperia is a single-supply, level-translating buffer/line driver with 3-state output, designed for bidirectional voltage translation between 1.2 V–5.0 V logic domains. It supports up-translation (e.g., 1.8 V input → 3.3 V output at VCC = 3.3 V) and down-translation (e.g., 5.0 V input → 3.3 V output at VCC = 3.3 V), features 5 V tolerant inputs, and operates across -40 °C to +125 °C for industrial controller and portable system interfacing.

For engineers reviewing the 74LV1T126GWH datasheet, 74LV1T126GWH pinout, 74LV1T126GWH application, or 74LV1T126GWH equivalent, key selection criteria include verified 3-state enable timing (ten ≤ 5.5 ns @ 5.0 V), input threshold compatibility across 1.65 V–5.5 V supply, 5 V input tolerance, and TSSOP5 (SOT353-1) package thermal performance under continuous 125 °C ambient conditions.

Technical Context

The device implements a single-channel CMOS buffer with active-low 3-state control via OE, where output impedance transitions between low-Z drive and high-Z OFF-state within nanosecond-scale enable/disable times. Its input stage accepts voltages up to 7.0 V absolute max and maintains valid logic thresholds across VCC = 1.65 V–5.5 V, enabling interoperability between mixed-voltage subsystems without external biasing.

Propagation delay (tpd) is load- and supply-dependent: 3.2 ns typical @ VCC = 5.0 V, CL = 15 pF; 6.5 ns @ VCC = 1.8 V, CL = 15 pF. Static characteristics include VIH/VIL thresholds that scale with VCC (e.g., VIH ≥ 0.65 × VCC min @ VCC = 3.0 V–3.6 V), ensuring robust noise margin in noisy industrial environments.

Key Specifications

Pinout & Package

TSSOP5 (SOT353-1) package: plastic thin shrink small outline, 5-lead, 1.25 mm body width, 0.65 mm lead pitch, 0.32 mm profile - optimized for space-constrained PCB layouts with manual or automated assembly compatibility.

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 74LV1T126GWH uniquely combines 5 V input tolerance, single-pin OE control for deterministic timing, and sub-1 μA ICC at 1.8 V-making it optimal for industrial and telecom systems requiring robust, controllable voltage bridging without direction-sensing overhead.

Availability

74LV1T126GWH is available at Aetrix Electronics and suitable for industrial controller backplanes, portable USB-C power delivery subsystems, and telecom line card voltage bridging requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74LV1T126GWH 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, discrete, and MOSFET solutions, with leadership in automotive-qualified and industrial-grade components.

The 74LV1T126GWH belongs to Nexperia's LV1T series of single-gate translating buffers, engineered specifically for space- and power-constrained mixed-voltage digital interfaces in industrial automation, computing, and communications infrastructure.

FAQ

What is the maximum input frequency supported by the 74LV1T126GWH?

The device supports up to 50 MHz operation at VCC = 3.3 V and 5.0 V with 15 pF load, based on propagation delay (tpd ≤ 5.4 ns) and transition rate limit (Δt/ΔV ≤ 1.0 ns/V). At 1.8 V, maximum usable frequency drops to 15 MHz due to slower edge rates; design margin requires derating by 20% for reliable timing closure in synchronous systems.

Can the 74LV1T126GWH drive a 50 pF capacitive load reliably?

No - the datasheet specifies dynamic characteristics only up to 30 pF load. Driving 50 pF increases tpd by ~35% (e.g., 5.4 ns → 7.3 ns @ 3.3 V) and may violate setup/hold timing in high-speed interfaces. For >30 pF loads, add series termination or select a buffer with higher IO drive strength (e.g., 74LVC1G125).

Is the 74LV1T126GWH pin-compatible with other SOT353-1 logic devices?

Yes - it shares the standard 5-pin TSSOP layout (SOT353-1) with identical pin 1 location and 0.65 mm pitch, enabling drop-in replacement for functionally similar single-gate buffers like 74LVC1G07 or 74LVC1G14 in existing footprints, provided OE logic polarity and voltage translation requirements match.

Does the 74LV1T126GWH require external pull-up/pull-down resistors on OE or A pins?

OE must be actively driven or pulled to VCC/GND; floating OE causes undefined output state and potential bus contention. A pin has no internal termination - external pull-up/down is required only if the driving source is open-drain or high-impedance during idle states, per system-level bus protocol requirements.