Texas Instruments SN74LVC2G126YEAR

Overview

SN74LVC2G126YEAR from Texas Instruments is a dual noninverting bus buffer gate with 3-state outputs, designed for 1.65-V to 5.5-V V_CC operation. It delivers ±24-mA output drive at 3.3 V, achieves 4-ns max propagation delay at 3.3 V, and supports 5.5-V-tolerant inputs - enabling voltage-level translation (e.g., 5 V → 3.3 V) in high-speed data acquisition and LED driver circuits.

For engineers reviewing the SN74LVC2G126YEAR datasheet, SN74LVC2G126YEAR pinout, SN74LVC2G126YEAR application, or SN74LVC2G126YEAR equivalent, key selection criteria include 3-state output control timing (t_en/t_dis), I_off-enabled live insertion capability, 5.5-V input tolerance for mixed-voltage interfacing, and thermal performance in NanoFree™ DSBGA (YZP) or VSSOP (DCU) packages.

Technical Context

The SN74LVC2G126YEAR implements two independent noninverting buffers, each with dedicated active-high output-enable (OE) control. Its I_off circuitry ensures outputs remain high-impedance and leakage-free when V_CC = 0 V, supporting partial-power-down and hot-plug scenarios.

It operates across –40°C to +125°C with guaranteed switching performance: t_pd ≤ 5 ns (V_CC = 3.3 V, –40°C to +125°C), t_en ≤ 5.1 ns, and t_dis ≤ 5.4 ns. Input thresholds are V_IH = 2.0 V (min) and V_IL = 0.8 V (max) at V_CC = 3.0–3.6 V, ensuring robust noise immunity in industrial logic interfaces.

Key Specifications

Pinout & Package

SN74LVC2G126YEAR is packaged in Texas Instruments' NanoFree™ DSBGA (YZP) - an 8-ball, 1.91 mm × 0.91 mm, face-down chip-scale package with solder bumps on bottom. This ultra-compact footprint minimizes PCB area and parasitic inductance for high-frequency signal integrity.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual 3-state buffer applications.

Compared with SN74LVC2G125YEAR and SN74AUP2G126DBVR, SN74LVC2G126YEAR uniquely balances 4-ns speed, ±24-mA drive, and 5.5-V input tolerance in a 0.91-mm-wide DSBGA - making it optimal for space-constrained, high-performance logic interfacing where signal polarity and timing margin are critical.

Availability

SN74LVC2G126YEAR is available at Aetrix Electronics and suitable for cable modem termination systems, high-speed data acquisition modules, military radar signal processing units, and motor control gate driver interfaces requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for SN74LVC2G126YEAR 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

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and logic ICs, with decades of expertise in high-reliability, high-performance logic families.

SN74LVC2G126YEAR belongs to TI's LVC (Low-Voltage CMOS) logic portfolio - engineered for interoperability across mixed-voltage systems, low-power operation, and robust noise immunity in industrial, automotive, and communications infrastructure.

FAQ

What is the maximum operating temperature for SN74LVC2G126YEAR?

The SN74LVC2G126YEAR is rated for continuous operation from –40°C to +125°C ambient temperature. This full industrial temperature range is validated per JEDEC JESD22-A108 and supported across all package variants (DSBGA YZP, VSSOP DCU), making SN74LVC2G126YEAR suitable for under-hood automotive, motor drive, and base station applications where thermal margins are critical.

Does SN74LVC2G126YEAR support level translation between 5-V and 3.3-V logic domains?

Yes, SN74LVC2G126YEAR supports down-translation: its inputs tolerate up to 5.5 V regardless of V_CC level, allowing 5-V microcontroller outputs to safely drive SN74LVC2G126YEAR inputs while V_CC is set to 3.3 V. The outputs then swing between 0 V and 3.3 V, providing clean 3.3-V logic levels - eliminating need for discrete level shifters in SN74LVC2G126YEAR-based interfaces.

What is the purpose of the I_off feature in SN74LVC2G126YEAR?

The I_off feature in SN74LVC2G126YEAR disables output leakage when V_CC = 0 V, preventing current backflow from live inputs or outputs into a powered-down section of the system. This enables safe live insertion of daughter cards, partial power-down of subsystems, and robust hot-swap capability - a key requirement in modular test equipment and telecom line cards using SN74LVC2G126YEAR.

Can SN74LVC2G126YEAR drive LEDs directly?

Yes, SN74LVC2G126YEAR can drive standard indicator LEDs directly: each output delivers up to 24 mA sink/source at 3.3 V, sufficient for common 2–20 mA LEDs. When used in LED driver mode, SN74LVC2G126YEAR's 4-ns propagation delay ensures crisp on/off transitions, and its 5.5-V input tolerance allows direct control from higher-voltage GPIOs - simplifying board design in SN74LVC2G126YEAR-based status indication circuits.

Is SN74LVC2G126YEAR pin-compatible with other dual buffer devices in TI's LVC family?

SN74LVC2G126YEAR shares identical pinout (8-pin DSBGA YZP, VSSOP DCU, SM8 DCT) and function with SN74LVC2G125YEAR (inverting) and SN74LVC2G126 (standard grade). However, SN74LVC2G126YEAR is a specific orderable variant - its marking and tape-and-reel packaging (e.g., YZPR suffix) differ from commercial SN74LVC2G126. Always verify package drawing and reel orientation (Q1 for YZP) before layout integration.