Texas Instruments 74LVC2G125DCURE4

Overview

74LVC2G125DCURE4 from Texas Instruments is a dual 3-state bus buffer gate IC designed for 1.65-V to 5.5-V operation, featuring two independent noninverting buffers with active-low output-enable controls (1OE, 2OE), ±24-mA drive at 3.3 V, 4.3-ns max propagation delay, and Ioff support for live insertion in partial-power-down systems - used in high-speed data acquisition, SSD interconnects, and video infrastructure signal routing.

For engineers reviewing the 74LVC2G125DCURE4 datasheet, 74LVC2G125DCURE4 pinout, 74LVC2G125DCURE4 application, or 74LVC2G125DCURE4 equivalent, key selection criteria include 3-state output timing control, overvoltage-tolerant inputs up to 5.5 V, thermal performance in VSSOP packaging, and compatibility with mixed-voltage logic translation in industrial and broadcast equipment.

Technical Context

The 74LVC2G125DCURE4 implements dual independent noninverting buffer functions (Y = A) with separate active-low output-enable inputs per channel. Its CMOS input structure supports 5.5-V tolerance across 1.65–5.5-V VCC, enabling down-translation from higher-voltage logic domains into lower-supply systems.

Each buffer features balanced push-pull outputs capable of sourcing/sinking up to ±24 mA at 3.3 V, with guaranteed 3-state isolation via Ioff circuitry that limits leakage to ±10 µA when VCC = 0 V - critical for hot-swap and back-drive protection in modular systems.

Key Specifications

Pinout & Package

VSSOP-8 (DCU) package: 2.30 mm × 2.00 mm body size, 0.5-mm lead pitch, thermally enhanced for surface-mount assembly in space-constrained applications.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC2G125DCTR, the 74LVC2G125DCURE4 offers 18% smaller area and better high-frequency signal integrity due to reduced parasitic inductance in VSSOP; versus 74LVC2G126DCURE4, it delivers true noninverting buffering essential for transparent data path applications without added logic inversion overhead.

Availability

74LVC2G125DCURE4 is available at Aetrix Electronics and suitable for high-speed data acquisition, SSD internal interconnects, and video broadcast infrastructure requiring stable component supply, long-term lifecycle assurance, and traceable industrial-grade sourcing.

Supply support for 74LVC2G125DCURE4 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 logic solutions, with decades of innovation in high-reliability interface ICs and power management.

The SN74LVC2G125 product line delivers compact, low-power, mixed-voltage logic buffers optimized for signal integrity, hot-swap resilience, and seamless integration in industrial automation, communications infrastructure, and storage systems.

FAQ

What is the maximum operating temperature for the 74LVC2G125DCURE4?

The 74LVC2G125DCURE4 is fully specified from –40°C to +125°C ambient temperature. This extended range qualifies it for under-hood automotive applications, industrial motor drives, and telecom base station equipment where thermal margins are critical. All electrical parameters - including propagation delay, output drive, and leakage - are guaranteed across this full range per TI's SCES204Q datasheet revision.

Does the 74LVC2G125DCURE4 support level translation between different supply voltages?

Yes, the 74LVC2G125DCURE4 supports down-translation: its inputs tolerate up to 5.5 V regardless of VCC, allowing 5-V signals to safely drive the device while operating at 1.8 V, 2.5 V, or 3.3 V. However, it does not translate up - outputs swing only between GND and the applied VCC. For bidirectional translation, external circuitry or dedicated level shifters are required.

How should the OE pins be handled during power-up to ensure reliable 3-state behavior?

To guarantee high-impedance outputs at power-up, both 1OE and 2OE pins must be held high until VCC stabilizes. TI recommends tying each OE to VCC through a pullup resistor; the minimum value depends on the driver's sink capability - typically 10 kΩ suffices for most applications. Floating OE pins risk undefined output states and potential bus contention.

Can the 74LVC2G125DCURE4 drive standard LED loads directly?

The 74LVC2G125DCURE4 can source or sink up to ±24 mA per output at 3.3 V, making it suitable for driving small indicator LEDs (e.g., 5-mm red/green with 2–10 mA forward current). However, it is not optimized for continuous high-current LED biasing - thermal limits and output voltage drop (VOL ≈ 0.55 V at 24 mA) require careful derating. For sustained LED loads >10 mA, dedicated LED drivers are preferred.

Is the 74LVC2G125DCURE4 pin-compatible with other members of the SN74LVC2Gxx family?

The 74LVC2G125DCURE4 shares the same VSSOP-8 (DCU) pinout with SN74LVC2G126DCURE4 (inverting buffer) and SN74LVC2G34DCURE4 (noninverting buffer without 3-state), but not with variants like SN74LVC2G08 (AND gate) or SN74LVC2G74 (flip-flop), which have different logic functions and incompatible pin assignments. Always verify function and pin mapping using TI's official package drawings.