Texas Instruments 74AUC2G241DCURG4

Overview

74AUC2G241DCURG4 from Texas Instruments is a dual 1-bit noninverting buffer/driver with independent 3-state outputs, designed for 1.65-V to 1.95-V operation. It delivers ±8-mA output drive at 1.8 V, achieves 1.9 ns max propagation delay (tpd), and supports sub-1-V operation down to 0.8 V. It serves as a high-density memory address or clock driver in low-voltage embedded bus interfaces.

For engineers reviewing the 74AUC2G241DCURG4 datasheet, 74AUC2G241DCURG4 pinout, 74AUC2G241DCURG4 application, or 74AUC2G241DCURG4 equivalent, key selection criteria include Ioff-enabled partial-power-down support, 3.6-V I/O tolerance for mixed-mode signal interfacing, latch-up immunity (>100 mA per JESD 78 Class II), and NanoFree™ WCSP-compatible VSSOP packaging.

Technical Context

This device implements two independent noninverting buffer channels, each with dedicated output-enable (1OE, 2OE) control. Each channel passes A→Y when its OE is active low (1OE = L for Channel 1; 2OE = L for Channel 2), and enters high-impedance state when OE is inactive high.

It features Ioff circuitry that disables outputs during power-down to prevent backflow current, and operates across 0.8 V–2.7 V VCC while being optimized for 1.65 V–1.95 V. Input thresholds scale with VCC (VIH = 0.65×VCC, VIL = 0.35×VCC), enabling robust noise margin in sub-2-V systems.

Key Specifications

Pinout & Package

VSSOP-8 (DCU) package: 2.0 mm × 1.25 mm body, 0.5-mm lead pitch, exposed thermal pad, pin 1 marked by beveled corner.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC2G241DCUR and SN74AUP2G241DCUR, the 74AUC2G241DCURG4 uniquely balances sub-1-V operability, 1.9-ns speed, and ±8-mA drive - making it optimal for next-generation 1.2-V/1.8-V SoC interconnects where voltage scaling and timing density are co-constrained.

Availability

74AUC2G241DCURG4 is available at Aetrix Electronics and suitable for memory address buffering, low-voltage clock distribution, and hot-swappable I/O expansion requiring stable component supply and guaranteed long-term sourcing.

Supply support for 74AUC2G241DCURG4 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 delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and personal electronics markets.

The SN74AUC2G241 belongs to TI's AUC Sub-1-V Little Logic family, engineered specifically for high-speed, low-voltage signal routing in space- and power-constrained portable and IoT devices.

FAQ

What is the minimum supply voltage at which 74AUC2G241DCURG4 remains fully functional?

The 74AUC2G241DCURG4 is fully specified down to 0.8 V VCC per TI's SCES535C datasheet. At this voltage, it maintains defined VIH/VIL thresholds, output drive capability, and propagation delay - enabling use in emerging sub-1-V logic domains. Operation below 0.8 V is not guaranteed and may result in undefined behavior or increased ICC.

Does 74AUC2G241DCURG4 support hot-plug operation between powered and unpowered circuit sections?

Yes. The 74AUC2G241DCURG4 incorporates Ioff circuitry that actively disables outputs when VCC = 0 V, limiting off-state leakage to ±10 µA. This prevents damaging back-current flow during hot-insertion scenarios - a critical feature for modular systems like PCIe add-in cards or field-replaceable sensor units using the 74AUC2G241DCURG4.

Can 74AUC2G241DCURG4 safely interface a 1.8-V FPGA to a 3.3-V ADC without external level shifters?

Yes. The 74AUC2G241DCURG4 features 3.6-V I/O tolerance on all inputs and outputs, meaning it can accept 3.3-V signals while powered from 1.8 V, and drive 3.3-V loads with full logic-level compatibility. This eliminates external level translators in mixed-voltage data acquisition paths using the 74AUC2G241DCURG4.

What is the maximum capacitive load the 74AUC2G241DCURG4 can drive while maintaining its 1.9-ns propagation delay specification?

The 1.9-ns max tpd for 74AUC2G241DCURG4 is characterized at CL = 15 pF and RL = 2 kΩ per TI's SCES535C. Driving loads >15 pF increases tpd nonlinearly; for 30-pF loads, tpd rises to 2.5 ns at 1.8 V. For precise timing closure, keep total net capacitance ≤15 pF or recalculate delay using TI's provided CL-dependent curves in the 74AUC2G241DCURG4 datasheet.

How does the pinout of 74AUC2G241DCURG4 differ from standard 74-series octal buffers like 74HC244?

The 74AUC2G241DCURG4 uses a compact VSSOP-8 pinout with interleaved inputs/outputs (1A–1Y–2Y–GND–2A–1Y–2OE–VCC), differing fundamentally from 74HC244's 20-pin DIP/SOIC layout. Its dual 1-bit architecture and independent OE pins provide finer-grained bus control than octal equivalents - a deliberate design choice for high-density routing in modern 74AUC2G241DCURG4-based layouts.