Texas Instruments SN74LVC1GU04DCKR

Overview

SN74LVC1GU04 from Texas Instruments is a single unbuffered CMOS inverter gate operating from 1.65 V to 5.5 V, delivering ±24 mA output drive at 3.3 V, with 3.7 ns maximum propagation delay and 10 µA maximum supply current. It performs Y = A logic inversion and supports overvoltage-tolerant inputs up to 5.5 V - used in oscillator circuits, level translation, and signal conditioning in portable media players and embedded PCs.

For engineers reviewing the SN74LVC1GU04 datasheet, SN74LVC1GU04 pinout, SN74LVC1GU04 application, or SN74LVC1GU04 equivalent, key selection criteria include unbuffered architecture for oscillator stability, Ioff support for live insertion, ±24-mA drive capability at 3.3 V, 1.65–5.5-V supply range, and SC70-5 package compatibility with high-density PCB layouts.

Technical Context

The SN74LVC1GU04 implements a single-stage unbuffered inverter using standard CMOS technology, eliminating input/output buffering stages to reduce gain and improve phase margin in RC oscillator configurations. Its balanced push-pull output delivers symmetrical sink/source drive (±24 mA at 3.3 V) and supports partial power-down via Ioff functionality.

Input pins tolerate voltages up to 5.5 V independent of VCC, enabling level-shifting between disparate supply domains. The device features negative clamping diodes on all I/O pins and meets JESD 78 Class II latch-up immunity (>100 mA), with ESD protection per HBM (±2000 V), CDM (±1000 V), and MM (±200 V).

Key Specifications

Pinout & Package

SN74LVC1GU04DCKR is housed in a 5-pin SC70 (DCK) package measuring 2.00 mm × 1.25 mm, optimized for space-constrained applications. The package uses standard surface-mount footprint with gull-wing leads and RoHS-compliant NiPdAu lead finish.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74LVC1G04W5-7 and SN74AHC1G04DBVR, SN74LVC1GU04DCKR uniquely combines unbuffered topology, ±24-mA drive, and 5.5-V input tolerance - making it optimal for compact oscillator circuits and mixed-voltage level translation where gain control and robust drive are critical.

Availability

SN74LVC1GU04DCKR is available at Aetrix Electronics and suitable for portable media players, embedded PCs, and pro audio mixers requiring stable component supply, consistent parametric performance, and long-term production continuity.

Supply support for SN74LVC1GU04DCKR 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 low-power, high-reliability IC design.

The SN74LVC1GU04 belongs to TI's LVC logic family - engineered for low-voltage operation (1.65–5.5 V), high-speed performance, and robust I/O tolerance to address space- and power-constrained applications in consumer and industrial electronics.

FAQ

What is the primary logic function of the SN74LVC1GU04DCKR?

The SN74LVC1GU04DCKR implements a single unbuffered CMOS inverter with Boolean function Y = A. It accepts one input (pin 2) and produces its logical complement at the output (pin 4), operating across 1.65 V to 5.5 V supply rails. Unlike buffered inverters, this device omits intermediate amplification stages - a key enabler for stable oscillator circuits and low-gain signal conditioning. Its unbuffered nature is explicitly confirmed in TI's datasheet Section 8.3.6 and Figure 3.

Does the SN74LVC1GU04DCKR support level shifting between different supply voltages?

Yes, the SN74LVC1GU04DCKR supports level shifting: its inputs tolerate up to 5.5 V regardless of VCC value (e.g., VCC = 1.8 V), enabling safe interfacing with higher-voltage signals. This is documented in Section 6.3 (Recommended Operating Conditions) and Section 8.3.5 (Over-voltage Tolerant Inputs). However, output swing remains rail-to-rail relative to VCC - so output level shifting requires external circuitry unless VCC matches the target domain.

Can the SN74LVC1GU04DCKR be used in oscillator circuits?

Yes, the SN74LVC1GU04DCKR is specifically designed for oscillator applications. Its unbuffered architecture provides lower loop gain and improved phase margin versus buffered equivalents, resulting in more predictable and stable RC or crystal-based oscillation. TI's datasheet Section 8.3.6 and Application Section 9.1 explicitly cite "oscillator circuits" as a primary use case and reference the application report "Use of the CMOS Unbuffered Inverter in Oscillator Circuits."

What is the maximum output drive capability of the SN74LVC1GU04DCKR at 3.3 V?

At VCC = 3.3 V, the SN74LVC1GU04DCKR delivers ±24 mA output drive - meaning it can source up to 24 mA in the high state and sink up to 24 mA in the low state. This is specified in the Features section and Table 6.3 (Recommended Operating Conditions) under I_OH and I_OL. The value is validated across –40°C to +125°C and forms the basis for driving moderate capacitive loads or fan-out to multiple CMOS inputs.

How does the Ioff feature benefit system design with the SN74LVC1GU04DCKR?

The Ioff feature places all inputs and outputs of the SN74LVC1GU04DCKR into a high-impedance state when VCC = 0 V, preventing current backflow and enabling live insertion or partial power-down. As defined in Section 8.3.4 and Electrical Characteristics (Ioff parameter), leakage remains ≤±10 µA per pin under these conditions - protecting upstream drivers and ensuring bus integrity during hot-swap or multi-rail sequencing events in systems like SSDs and tablets.