Texas Instruments SN74LVC2G34DBVTG4

Overview

SN74LVC2G34DBVTG4 from Texas Instruments is a dual non-inverting buffer gate designed for 1.65-V to 5.5-V V_CC operation, performing Y = A logic in positive logic. It delivers ±24-mA output drive at 3.3 V, achieves 4.1 ns max propagation delay at 3.3 V, and supports 5.5-V tolerant inputs - enabling level translation in portable audio, SSD, and embedded PC signal routing paths.

For engineers reviewing the SN74LVC2G34DBVTG4 datasheet, SN74LVC2G34DBVTG4 pinout, SN74LVC2G34DBVTG4 application, or SN74LVC2G34DBVTG4 equivalent, key selection criteria include I_off-enabled partial-power-down capability, NanoFree™ SOT-23 (DBV) package compatibility, 1.65–5.5 V supply flexibility, and 5.5-V input tolerance for mixed-voltage interface bridging.

Technical Context

The SN74LVC2G34DBVTG4 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, blocking back-current flow during live insertion or partial power-down - critical for hot-swap and modular system designs.

Input voltage tolerance up to 5.5 V allows use as a down-translator: signals referenced to higher domains (e.g., 5-V microcontroller GPIO) can safely drive the device while V_CC operates at 1.8 V or 3.3 V, preserving signal integrity without external level-shifting components.

Key Specifications

Pinout & Package

SN74LVC2G34DBVTG4 uses the 6-pin SOT-23 (DBV) package measuring 2.90 mm × 1.60 mm, featuring NanoFree™ technology where the silicon die serves as the package substrate - reducing parasitic inductance and improving thermal performance over conventional leadframe packages.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC2G34DBVR, SN74LVC2G34DBVTG4 offers identical performance in a smaller-reel format ideal for design validation and pilot runs; versus SN74AUP2G34DBVR, it trades ultra-low power for broader voltage interoperability and robust level translation - making it the preferred choice for multi-rail industrial and consumer electronics.

Availability

SN74LVC2G34DBVTG4 is available at Aetrix Electronics and suitable for portable audio docks, SSD controller interfaces, and embedded PC I/O expansion requiring stable component supply, consistent NanoFree™ SOT-23 (DBV) packaging, and guaranteed 5.5-V tolerant input operation.

Supply support for SN74LVC2G34DBVTG4 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 high-reliability packaging.

The SN74LVC2G34DBVTG4 belongs to TI's LVC (Low-Voltage CMOS) logic family, engineered for wide-supply interoperability, robust ESD performance, and seamless integration into mixed-voltage digital systems - especially where space-constrained, thermally efficient, and hot-pluggable interfaces are required.

FAQ

What is the maximum operating temperature for SN74LVC2G34DBVTG4?

The SN74LVC2G34DBVTG4 is rated for operation from –40°C to +125°C ambient temperature. This extended range is validated per JEDEC JESD78 latch-up testing and thermal characterization, making SN74LVC2G34DBVTG4 suitable for under-hood automotive modules and industrial control cabinets where thermal margins are critical.

Does SN74LVC2G34DBVTG4 support level translation between 5-V and 3.3-V logic domains?

Yes, SN74LVC2G34DBVTG4 supports down-translation: its inputs tolerate up to 5.5 V regardless of V_CC setting, so a 5-V signal applied to Pin 1 or Pin 3 will correctly drive the buffer even when V_CC = 3.3 V. The output swings rail-to-rail between GND and V_CC, producing a clean 3.3-V logic signal - eliminating need for external translators.

Can SN74LVC2G34DBVTG4 be used with floating inputs?

No - all unused inputs of SN74LVC2G34DBVTG4 must be externally biased to either V_CC or GND. Floating CMOS inputs cause increased ICC, unpredictable output states, and potential oscillation due to undefined threshold crossing. TI's application report SCBA004 explicitly mandates biasing unused pins to ensure stable SN74LVC2G34DBVTG4 operation.

What is the purpose of the I_off feature in SN74LVC2G34DBVTG4?

The I_off feature in SN74LVC2G34DBVTG4 disables output drivers and blocks current flow when V_CC = 0 V, preventing damaging back-current from live signal lines into a powered-down section of the system. This enables safe hot-plug operation in modular systems and protects SN74LVC2G34DBVTG4 during partial power-down sequences in complex power architectures.

Is SN74LVC2G34DBVTG4 compatible with standard SOT-23 footprints?

Yes, SN74LVC2G34DBVTG4 uses the industry-standard 6-pin SOT-23 (DBV) package with 0.95-mm pitch and 2.90 mm × 1.60 mm body dimensions. Its NanoFree™ construction retains full mechanical and solder-reflow compatibility with legacy SOT-23 footprints - no PCB redesign is needed when upgrading from conventional SOT-23 logic buffers to SN74LVC2G34DBVTG4.