Texas Instruments SN74LVC2G34YZAR

Overview

SN74LVC2G34YZAR from Texas Instruments is a dual non-inverting buffer gate IC designed for 1.65-V to 5.5-V V_CC operation, performing Y = A logic on two independent channels. It delivers ±24-mA output drive at 3.3 V, features I_off partial-power-down protection, and supports 5.5-V tolerant inputs - enabling level translation in portable audio and embedded interface applications.

For engineers reviewing the SN74LVC2G34YZAR datasheet, SN74LVC2G34YZAR pinout, SN74LVC2G34YZAR application, or SN74LVC2G34YZAR equivalent, key selection criteria include its DSBGA-6 (1.41 mm × 0.91 mm) NanoFree™ package, 4.1 ns max propagation delay at 3.3 V, I_off current limiting, and compatibility with 1.65–5.5 V supply rails across industrial temperature range.

Technical Context

The SN74LVC2G34YZAR implements two independent CMOS buffer gates with rail-to-rail output swing and balanced rise/fall times. Its I_off circuitry actively disables outputs when V_CC = 0 V, preventing back-drive current and supporting live insertion in hot-swap systems.

Input voltage tolerance up to 5.5 V enables down-translation from higher-voltage domains (e.g., 5-V logic) to lower V_CC rails (e.g., 1.8 V or 3.3 V), while ESD ratings of 2500 V HBM and 1500 V CDM ensure robustness in handheld and consumer electronics environments.

Key Specifications

Pinout & Package

SN74LVC2G34YZAR uses a 6-pin DSBGA (Die Size Ball Grid Array) package with 0.4-mm pitch, measuring 1.41 mm × 0.91 mm - optimized for ultra-compact PCB layouts in space-constrained portable devices.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC2G34DBVR and SN74LVC2G34DCKR, SN74LVC2G34YZAR offers the smallest footprint and lowest thermal resistance among LVC2G34 variants, making it optimal for space- and thermally constrained portable designs - though with reduced max operating temperature (85°C vs. 125°C).

Availability

SN74LVC2G34YZAR is available at Aetrix Electronics and suitable for portable audio docks, SSD power management, tablet GPIO expansion, and HDTV HDMI interface applications requiring stable component supply and long-term lifecycle support.

Supply support for SN74LVC2G34YZAR 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 connectivity technologies, with decades of expertise in logic IC design and advanced packaging.

The SN74LVC2G34YZAR belongs to TI's LVC (Low-Voltage CMOS) logic family, engineered for low-power, high-speed interfacing in battery-operated and space-constrained consumer electronics.

FAQ

What is the operating temperature range for SN74LVC2G34YZAR?

The SN74LVC2G34YZAR is specified for operation from –40°C to +85°C. This range reflects its DSBGA package construction and qualification for commercial and extended-temperature portable applications such as tablets and audio docks. It differs from other variants like SN74LVC2G34DBVR, which supports up to 125°C.

Does SN74LVC2G34YZAR support level translation between different supply voltages?

Yes, SN74LVC2G34YZAR supports down-translation: its inputs tolerate voltages up to 5.5 V regardless of V_CC, allowing connection to higher-voltage sources (e.g., 5-V microcontrollers) while powered from lower rails (e.g., 1.8 V or 3.3 V). Outputs swing rail-to-rail between GND and the applied V_CC.

What is the purpose of the I_off feature in SN74LVC2G34YZAR?

The I_off feature in SN74LVC2G34YZAR disables output drivers when V_CC = 0 V, preventing damaging current backflow through the device during partial power-down or hot-insertion scenarios. This eliminates the need for external isolation components in modular systems like docking stations or PCIe add-in cards.

Can SN74LVC2G34YZAR drive LEDs directly?

Yes, SN74LVC2G34YZAR can drive LEDs directly: each output provides ±24 mA at 3.3 V, sufficient for indicator LEDs or low-current status illumination. Designers must limit current via series resistors and ensure total V_CC/GND current stays within ±100 mA, per the absolute maximum ratings.

What package type does SN74LVC2G34YZAR use, and why is it significant?

SN74LVC2G34YZAR uses a 6-pin DSBGA (YZP) package measuring 1.41 mm × 0.91 mm with 0.4-mm ball pitch. Its NanoFree™ construction places the silicon die directly into the package, reducing size by >50% versus SOT-23 and improving thermal performance (R_θJA = 123°C/W), making it ideal for ultra-compact portable electronics.