Texas Instruments SN74LVC3G34YEAR

Overview

SN74LVC3G34YEAR from Texas Instruments is a triple non-inverting buffer gate IC designed for 1.65-V to 5.5-V V_CC operation, performing Y = A logic on three independent channels. 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 voltage translation in portable audio and embedded PC signal routing.

For engineers reviewing the SN74LVC3G34YEAR datasheet, SN74LVC3G34YEAR pinout, SN74LVC3G34YEAR application, or SN74LVC3G34YEAR equivalent, key selection criteria include I_off-enabled partial-power-down capability, NanoFree™ DSBGA-8 package compatibility, 3.3-V high-speed buffering with ground bounce <0.8 V, and down-translation from 5.5-V inputs to lower V_CC rails.

Technical Context

The SN74LVC3G34YEAR implements three independent CMOS buffer stages with identical input/output characteristics and shared V_CC/GND rails. Each channel features rail-to-rail output swing, 5.5-V-tolerant inputs regardless of V_CC, and I_off circuitry that disables outputs and blocks current backflow when V_CC = 0 V.

It operates across –40°C to +85°C (DSBGA package), supports live insertion via I_off, and meets JESD 78 Class II latch-up immunity (>100 mA) and JESD 22 ESD ratings (2500-V HBM, 1500-V CDM). No enable/disable control lines are present - all buffers are always active.

Key Specifications

Pinout & Package

SN74LVC3G34YEAR is packaged in an 8-pin DSBGA (YZP) measuring 1.91 mm × 0.91 mm with bottom-side ball layout. The package uses NanoFree™ technology - the silicon die serves as the package - enabling ultra-thin, board-area-efficient mounting for space-constrained portable devices.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC3G34DCUR and SN74LVC3G34DCTR, the SN74LVC3G34YEAR offers the smallest footprint and lowest thermal resistance (140°C/W), making it optimal for thermally constrained, high-density portable applications where board area is premium and airflow is limited.

Availability

SN74LVC3G34YEAR is available at Aetrix Electronics and suitable for portable audio, embedded PC I/O expansion, and SSD power sequencing requiring stable component supply across extended product lifecycles.

Supply support for SN74LVC3G34YEAR 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 company specializing in analog, embedded processing, and logic solutions, with leadership in low-power, high-integration ICs for consumer and industrial markets.

The SN74LVC3G34YEAR belongs to TI's LVC logic family, engineered for robust voltage translation, ultra-low quiescent current, and NanoFree™ packaging - targeting space- and power-constrained portable electronics.

FAQ

What is the maximum operating temperature range for SN74LVC3G34YEAR?

The SN74LVC3G34YEAR is rated for operation from –40°C to +85°C, consistent with its DSBGA (YZP) package specification. This range supports deployment in consumer portable devices such as tablets, wireless headsets, and SSD modules where ambient temperatures remain within commercial limits. The datasheet confirms this rating under Recommended Operating Conditions and Thermal Information sections.

Does SN74LVC3G34YEAR support partial power-down functionality?

Yes, SN74LVC3G34YEAR incorporates I_off circuitry that actively disables all three buffer outputs when V_CC = 0 V, limiting I_off to ±10 µA maximum. This feature prevents damaging current backflow during hot-insertion or partial-system power-down - a requirement validated in applications like modular docking stations and field-upgradeable SSDs.

Can SN74LVC3G34YEAR translate 5-V input signals to a 1.8-V supply domain?

Yes, SN74LVC3G34YEAR accepts input voltages up to 5.5 V regardless of V_CC level, enabling reliable down-translation from 5-V sources to 1.8-V logic domains. Its VIH/VIL thresholds scale with V_CC, and the device maintains full output drive and timing performance - confirmed by Electrical Characteristics tables at V_CC = 1.8 V ± 0.15 V.

What is the typical propagation delay of SN74LVC3G34YEAR at 3.3 V?

The typical propagation delay (t_pd) of SN74LVC3G34YEAR is 1.4 ns, with a maximum of 4.1 ns at V_CC = 3.3 V ± 0.3 V and TA = –40°C to +85°C. This value is measured under standard load conditions (CL = 30 pF, RL = 500 Ω) and supports high-speed signal routing in applications such as audio dock control and SSD command interfaces.

Is SN74LVC3G34YEAR pin-compatible with other packages in the same family?

Yes, SN74LVC3G34YEAR shares identical pin functions and logic behavior with SN74LVC3G34DCUR (VSSOP-8) and SN74LVC3G34DCTR (SM8), though physical pin spacing and package dimensions differ. All variants use the same 1A/1Y/2A/2Y/3A/3Y/GND/V_CC assignment - enabling direct substitution in firmware and schematic design when mechanical constraints permit.