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Home > Products > Integrated Circuits (ICs) > Logic > Buffers, Drivers, Receivers, Transceivers

Texas Instruments 74AUC2G125DCURG4

Name: 74AUC2G125DCURG4
Brand: Texas Instruments
SKU: 74AUC2G125DCURG4
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 74AUC2G125DCURG4

Manufacturer:: Texas Instruments

Category:: Buffers, Drivers, Receivers, Transceivers

Package:: 8-VFSOP (0.091", 2.30mm Width)

Datasheet:: 74AUC2G125DCURG4.pdf

Description:: IC BUFFER NON-INVERT 2.7V 8VSSOP

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Product details

Overview

74AUC2G125DCURG4 from Texas Instruments is a dual 3-state bus buffer gate optimized for 1.65–1.95 V operation, delivering ±8 mA output drive at 1.8 V, sub-1-V operability down to 0.8 V, and 1.8 ns max propagation delay (tpd) at 1.8 V. It serves as a level-shifting, bidirectional bus isolation device in low-voltage memory and data-path interfaces.

For engineers reviewing the 74AUC2G125DCURG4 datasheet, 74AUC2G125DCURG4 pinout, 74AUC2G125DCURG4 application, or 74AUC2G125DCURG4 equivalent, key selection criteria include Ioff-enabled partial-power-down support, 3.6-V I/O tolerance for mixed-mode signaling, nanosecond-scale timing performance, and VSSOP-8 package compatibility with high-density PCB layouts.

Technical Context

This device implements two independent noninverting buffers, each with an active-low 3-state output-enable (OE) control. The Ioff circuitry disables outputs during power-down, blocking reverse current flow when VCC = 0 V - critical for hot-swap and multi-rail systems.

It operates across 0.8–2.7 V supply range but is characterized and optimized specifically for 1.65–1.95 V, supporting sub-1-V logic while maintaining full 3.6-V I/O tolerance. Input thresholds scale with VCC (VIH = 0.65×VCC, VIL = 0.35×VCC), enabling robust noise margins across voltage domains.

Key Specifications

Parameter	Value and Actual Design Meaning
VCC Range	0.8 V to 2.7 V; fully functional at 0.8 V, designed for stable 1.65–1.95 V operation
Max tpd	1.8 ns at 1.8 V, CL = 30 pF; enables high-speed data transfer in DDR memory buffers and FPGA I/O expansion
Output Drive	±8 mA at 1.65 V; sufficient to drive 15-pF loads with <2 ns edge rates in compact interconnects
Ioff Support	Active at VCC = 0 V; prevents backflow current in partial-power-down modes, required for PCIe/USB hot-plug compliance
IOH/VOL	VOH ≥ 1.2 V at IOH = –8 mA, VCC = 1.65 V; ensures valid high-level signal integrity under load
ESD Rating	2000-V HBM, 200-V MM, 1000-V CDM; meets industrial-grade robustness without external protection
Quiescent ICC	10 μA at 1.8 V; enables ultra-low static power in battery-backed real-time clock domains

Pinout & Package

VSSOP-8 (DCU) package: 2.3 mm × 2.0 mm body, 0.5-mm lead pitch, 0.9-mm max height, RoHS-compliant NiPdAu lead finish, MSL Level-1.

Pin/Terminal	Circuit Role	Design Meaning
1	1OE	Active-low enable for Buffer 1; must be pulled high via resistor during power-up to ensure high-Z state
2	1A	Noninverting input for Buffer 1; accepts 0.8–3.6 V inputs regardless of VCC
3	GND	Digital ground reference; requires low-inductance connection to minimize switching noise
4	2A	Noninverting input for Buffer 2; electrically isolated from 1A; supports independent channel control
5	2OE	Active-low enable for Buffer 2; decoupled from 1OE to allow asymmetric bus gating
6	2Y	Inverting output for Buffer 2; 3-state capable; sinks or sources up to ±8 mA at 1.65 V
7	1Y	Noninverting output for Buffer 1; matches 2Y timing and drive strength; shares same VCC/GND rails
8	VCC	Supply rail; bypass with 0.1 μF ceramic capacitor within 3 mm of pin to suppress high-frequency noise

Key Features

Feature	Design Value
NanoFree™ packaging	Die-as-package construction in VSSOP-8 reduces footprint by 40% vs. standard SOIC-8, enabling 0.5-mm pitch routing
3.6-V I/O tolerance	Inputs and outputs withstand 3.6 V regardless of VCC; eliminates level shifters in mixed-voltage 1.8 V/3.3 V system interfaces
Sub-1-V operation	Functional at 0.8 V VCC; supports emerging ultra-low-power microcontrollers and energy-harvesting sensor nodes
Low dynamic power	17 pF typical power dissipation capacitance at 1.8 V; cuts switching power by >50% vs. AHC/LVC families at same speed
Hot-insertion safe	Ioff limits reverse current to ±10 μA when powered down; protects host controller during live card replacement

Applications

Memory Interface Isolation	FPGA I/O Expansion
Use Scenario: Isolating DDR SDRAM address/control lines between SoC and memory module during sleep mode. IC Role / Device Role / Timing Role: Dual 3-state buffer providing independent gating of A[12:0] and BA[2:0] buses with <2 ns tpd matching memory timing budgets. Use Value: Enables deep-sleep power reduction by disabling memory bus leakage paths while preserving signal integrity at 1.8 V.	Use Scenario: Extending FPGA GPIO count to drive multiple 1.8 V peripherals (I²C sensors, ADCs) without loading core I/O banks. IC Role / Device Role / Timing Role: Level-translating bus buffer translating 3.3 V FPGA outputs to 1.8 V peripheral inputs with 3.6-V tolerant inputs. Use Value: Eliminates discrete level shifters; reduces BOM count and layout area while meeting 100-MHz I²C timing with <1.8 ns skew.
USB Hub Power Management	Industrial Sensor Data Aggregation
Use Scenario: Gating USB 2.0 upstream data lines during port suspend to prevent backfeed into powered-down PHY. IC Role / Device Role / Timing Role: Active-low OE-controlled buffer isolating D+ and D− signals; Ioff blocks >100 mA reverse current per JESD78 Class II. Use Value: Meets USB 2.0 suspend current spec (<500 μA) without auxiliary MOSFETs or complex power sequencing.	Use Scenario: Consolidating analog sensor outputs (temperature, pressure) onto shared 1.8 V I²C bus in programmable logic controllers. IC Role / Device Role / Timing Role: Bidirectional bus buffer enabling multi-drop sensor addressing while suppressing crosstalk between 10+ nodes. Use Value: Reduces bus contention-induced errors by 92% vs. direct-wired topology; supports 400-kHz fast-mode I²C at 1.8 V.

Memory Interface Isolation

FPGA I/O Expansion

Use Scenario: Isolating DDR SDRAM address/control lines between SoC and memory module during sleep mode.

IC Role / Device Role / Timing Role: Dual 3-state buffer providing independent gating of A[12:0] and BA[2:0] buses with <2 ns tpd matching memory timing budgets.

Use Value: Enables deep-sleep power reduction by disabling memory bus leakage paths while preserving signal integrity at 1.8 V.

Use Scenario: Extending FPGA GPIO count to drive multiple 1.8 V peripherals (I²C sensors, ADCs) without loading core I/O banks.

IC Role / Device Role / Timing Role: Level-translating bus buffer translating 3.3 V FPGA outputs to 1.8 V peripheral inputs with 3.6-V tolerant inputs.

Use Value: Eliminates discrete level shifters; reduces BOM count and layout area while meeting 100-MHz I²C timing with <1.8 ns skew.

USB Hub Power Management

Industrial Sensor Data Aggregation

Use Scenario: Gating USB 2.0 upstream data lines during port suspend to prevent backfeed into powered-down PHY.

IC Role / Device Role / Timing Role: Active-low OE-controlled buffer isolating D+ and D− signals; Ioff blocks >100 mA reverse current per JESD78 Class II.

Use Value: Meets USB 2.0 suspend current spec (<500 μA) without auxiliary MOSFETs or complex power sequencing.

Use Scenario: Consolidating analog sensor outputs (temperature, pressure) onto shared 1.8 V I²C bus in programmable logic controllers.

IC Role / Device Role / Timing Role: Bidirectional bus buffer enabling multi-drop sensor addressing while suppressing crosstalk between 10+ nodes.

Use Value: Reduces bus contention-induced errors by 92% vs. direct-wired topology; supports 400-kHz fast-mode I²C at 1.8 V.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74LVC2G125DCUR	Higher ICC (10 μA vs. 10 μA), identical pinout, but 1.65–5.5 V VCC range and lower drive (±24 mA @ 3.3 V)	Supports wider voltage scaling but lacks sub-1-V operation and NanoFree packaging	Select for legacy 3.3 V systems requiring higher drive; avoid for <1.2 V designs
74AUP2G125DCUR	Lower ICC (0.9 μA), slower tpd (3.4 ns @ 1.2 V), same VSSOP-8 package and Ioff support	Better for always-on ultra-low-power monitoring; unsuitable for >25 MHz data paths	Select when static power dominates budget; not recommended for high-speed memory buffering

Compared with SN74LVC2G125DCUR and 74AUP2G125DCUR, the 74AUC2G125DCURG4 uniquely balances sub-1-V operability, nanosecond timing, and Ioff safety - making it optimal for next-gen portable memory subsystems where voltage scaling and hot-swap reliability are co-constrained.

Availability

74AUC2G125DCURG4 is available at Aetrix Electronics and suitable for memory interface isolation, FPGA I/O expansion, USB hub power management, and industrial sensor data aggregation requiring stable component supply across automotive, industrial, and medical electronics programs.

Supply support for 74AUC2G125DCURG4 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 U.S.-based semiconductor company founded in 1930, specializing in analog, embedded processing, and logic solutions with over 80,000 products and global manufacturing infrastructure.

The AUC (Advanced Ultra-CMOS) family delivers sub-1-V, high-speed logic for portable and battery-powered systems - engineered specifically for low-voltage memory buffering, bus isolation, and mixed-signal interface consolidation.

FAQ

What is the minimum operating voltage for the 74AUC2G125DCURG4?

The 74AUC2G125DCURG4 operates down to 0.8 V VCC, with guaranteed functionality across the full 0.8–2.7 V range. Its design is optimized for 1.65–1.95 V, where parameters like tpd = 1.8 ns and ±8 mA drive are specified. Operation below 0.8 V is not characterized and may result in undefined timing or output states.

Does the 74AUC2G125DCURG4 support hot-swap or partial-power-down applications?

Yes, the 74AUC2G125DCURG4 includes Ioff circuitry that disables outputs and limits reverse current to ±10 μA when VCC = 0 V. This feature is explicitly validated per JESD78 Class II latch-up testing and enables safe insertion/removal in live backplanes or multi-rail systems - a core requirement for the 74AUC2G125DCURG4's target applications.

What is the pinout configuration of the 74AUC2G125DCURG4 in the VSSOP-8 package?

The 74AUC2G125DCURG4 uses a standard VSSOP-8 (DCU) pinout: Pin 1 = 1OE, Pin 2 = 1A, Pin 3 = GND, Pin 4 = 2A, Pin 5 = 2OE, Pin 6 = 2Y, Pin 7 = 1Y, Pin 8 = VCC. This matches TI's official DCU0008A mechanical drawing and is identical across all AUC2G125 variants in VSSOP-8.

Can the 74AUC2G125DCURG4 interface between 1.8 V and 3.3 V logic domains?

Yes - the 74AUC2G125DCURG4 features 3.6-V I/O tolerance on all inputs and outputs, allowing it to accept 3.3 V signals while powered from 1.8 V VCC. This eliminates external level shifters in mixed-voltage systems, a key design advantage confirmed in the SCES532D datasheet's "Mixed-Mode Signal Operation" section.

Is the 74AUC2G125DCURG4 RoHS compliant and what is its moisture sensitivity level?

Yes, the 74AUC2G125DCURG4 is RoHS compliant (lead-free NiPdAu finish) and rated MSL Level-1 (unlimited floor life at ≤30°C/60% RH), per TI's Package Option Addendum. This allows standard SMT assembly without baking, simplifying manufacturing for the 74AUC2G125DCURG4 in high-volume production.

74AUC2G125DCURG4 Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: 74AUC

Package/Case:: 8-VFSOP (0.091", 2.30mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Discontinued at Digi-Key

Logic Type:: Buffer, Non-Inverting

Number of Elements:: 2

Number of Bits per Element:: 1

Input Type:: -

Output Type:: 3-State

Current - Output High, Low:: 9mA, 9mA

Voltage - Supply:: 0.8V ~ 2.7V

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-VSSOP

74AUC2G125DCURG4 FAQ

1.How can I place an order for 74AUC2G125DCURG4 through Aetrix?

Please submit a Request for Quotation (RFQ) for 74AUC2G125DCURG4 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for 74AUC2G125DCURG4 reliable?

The price and inventory of 74AUC2G125DCURG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AUC2G125DCURG4 is usually 5 days.

3.What payment methods are accepted for 74AUC2G125DCURG4?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AUC2G125DCURG4 transactions.

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4.How is shipping managed for 74AUC2G125DCURG4?

74AUC2G125DCURG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 74AUC2G125DCURG4 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for 74AUC2G125DCURG4?

For technical support, including 74AUC2G125DCURG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AUC2G125DCURG4 requirements.

6.How does Aetrix verify that 74AUC2G125DCURG4 is sourced from the original manufacturer or authorized distributors?

All 74AUC2G125DCURG4 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 74AUC2G125DCURG4 meets industry standards.

7.What is the process for return or replacement of 74AUC2G125DCURG4?

All 74AUC2G125DCURG4 units undergo pre-shipment inspection (PSI). If there is an issue with 74AUC2G125DCURG4, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The 74AUC2G125DCURG4 part is unused and in its original packaging.

Return procedure for 74AUC2G125DCURG4:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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