Texas Instruments SN74AUC2G34YEPR

Overview

SN74AUC2G34YEPR from Texas Instruments is a dual non-inverting buffer gate IC designed for ultra-low-voltage, high-speed logic interfacing in space-constrained applications. It operates from 0.8 V to 2.7 V (optimized for 1.65–1.95 V), delivers ±8 mA output drive at 1.8 V, achieves 1.6 ns max propagation delay at 1.8 V, and features Ioff support for partial-power-down mode - enabling use in battery-powered mobile I/O expansion and level-shifting between mixed-voltage domains.

For engineers reviewing the SN74AUC2G34YEPR datasheet, SN74AUC2G34YEPR pinout, SN74AUC2G34YEPR application, or SN74AUC2G34YEPR equivalent, key selection considerations include its sub-1-V operability, 3.6-V I/O tolerance, NanoFree™ DSBGA package footprint, latch-up immunity (>100 mA), and ESD robustness (2000-V HBM).

Technical Context

This device implements two independent positive-logic buffers (Y = A) with rail-to-rail CMOS output swing and no internal feedback or enable control. Its architecture supports simultaneous operation across dual channels without crosstalk, and the Ioff circuitry actively disables outputs during power-down to prevent backflow current when VCC = 0 V.

The SN74AUC2G34YEPR uses advanced low-threshold CMOS process technology to achieve sub-1-V functionality while maintaining full 3.6-V I/O tolerance - enabling safe interfacing between 1.8-V core logic and legacy 3.3-V peripherals without external level shifters.

Key Specifications

Pinout & Package

SN74AUC2G34YEPR is packaged in a 6-ball NanoFree™ DSBGA (YZP) - a die-size ball grid array with 0.5-mm pitch, 1.4 mm × 1.4 mm body, and Pb-free SnAgCu solder bumps. The package eliminates leadframe and mold compound, minimizing parasitic inductance and thermal resistance (θJA = 123°C/W).

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74AUC2G34DBVR and SN74AUC2G34DCKR, the SN74AUC2G34YEPR offers the smallest PCB footprint and lowest thermal resistance, making it optimal for miniaturized, thermally dense designs - though it requires advanced DSBGA placement and reflow processes.

Availability

SN74AUC2G34YEPR is available at Aetrix Electronics and suitable for mobile I/O expansion, low-power sensor interface, wearable display driver support, and USB-C sideband use detection requiring stable component supply across production lifecycles.

Supply support for SN74AUC2G34YEPR 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 over 90 years of innovation in high-reliability, low-power IC design.

The SN74AUC2G34YEPR belongs to TI's AUC logic family - engineered for ultra-low-voltage operation and high-speed performance in portable, battery-powered, and space-constrained electronic systems.

FAQ

What is the minimum supply voltage at which SN74AUC2G34YEPR remains fully functional?

The SN74AUC2G34YEPR is fully specified down to 0.8 V VCC, with guaranteed operation across the entire recommended range of 0.8 V to 2.7 V. At 0.8 V, it maintains valid logic thresholds (VIH = 0 V, VIL = 0 V), 10 µA ICC, and functional output drive - making SN74AUC2G34YEPR suitable for energy-harvesting and ultra-low-power brownout scenarios.

Does SN74AUC2G34YEPR support hot-swapping or partial-power-down modes?

Yes, SN74AUC2G34YEPR includes Ioff circuitry that disables outputs when VCC = 0 V, limiting Ioff to ±10 µA at 2.7 V. This prevents damaging backflow current when SN74AUC2G34YEPR is inserted into a live backplane or when only part of a system is powered - a critical feature for modular instrumentation and field-upgradeable hardware.

Can SN74AUC2G34YEPR safely interface between 1.8-V and 3.3-V logic domains?

Yes, SN74AUC2G34YEPR has 3.6-V I/O tolerance, meaning its inputs and outputs can withstand up to 3.6 V regardless of VCC level. When powered at 1.8 V, SN74AUC2G34YEPR accepts 3.3-V inputs and drives 3.3-V loads without damage or level-shifter components - enabling direct interconnection in mixed-voltage systems like FPGA I/O banks or PMIC-controlled subsystems.

What is the significance of the NanoFree™ package used in SN74AUC2G34YEPR?

The NanoFree™ DSBGA (YZP) package in SN74AUC2G34YEPR replaces traditional leadframes and molding with the silicon die itself as the package - resulting in a 1.4 mm × 1.4 mm footprint, 0.5-mm ball pitch, and 123°C/W thermal resistance. This reduces parasitic inductance, improves high-frequency signal fidelity, and saves >50% PCB area versus SOT-23 - essential for SN74AUC2G34YEPR deployment in wearables and compact modules.

How does the propagation delay of SN74AUC2G34YEPR vary with supply voltage and load capacitance?

SN74AUC2G34YEPR achieves 1.6 ns max tpd at 1.8 V with CL = 15 pF. Delay increases to 2.4 ns at 1.8 V with CL = 30 pF, and degrades to 6.4 ns at 0.8 V (CL = 15 pF). These values are measured per JEDEC standards and reflect real-world trade-offs between voltage scaling and timing closure - critical for SN74AUC2G34YEPR use in adaptive voltage scaling architectures.