Nexperia USA Inc. 74LVC3G17GS,115

Overview

74LVC3G17GS,115 from Nexperia is a triple non-inverting Schmitt-trigger buffer IC with 5 V tolerant inputs, designed for level translation between 3.3 V and 5 V logic domains in mixed-voltage systems. It operates from 1.65 V to 5.5 V, delivers ±24 mA output drive at 3.0 V, features IOFF partial power-down protection, and is rated for -40 °C to +125 °C operation in XSON8 (SOT1203) package.

For engineers reviewing the 74LVC3G17GS,115 datasheet, 74LVC3G17GS,115 pinout, 74LVC3G17GS,115 application, or 74LVC3G17GS,115 equivalent, this device serves as a noise-immune signal conditioner and voltage-level translator in industrial I/O, sensor interface, and microcontroller peripheral buffering - where hysteresis, overvoltage tolerance, and low-power CMOS compatibility are critical selection criteria.

Technical Context

The 74LVC3G17GS implements three independent Schmitt-trigger input buffers with non-inverting logic function, each providing hysteresis (VH = 0.40–1.90 V depending on VCC) to reject noise on slow or noisy input signals. Its IOFF circuit actively disables outputs when VCC = 0 V, preventing backflow current during partial power-down sequences.

Input thresholds (VT+ = 0.70–3.80 V, VT− = 0.25–2.50 V) scale with supply voltage, enabling robust operation across 1.65 V to 5.5 V. Inputs tolerate up to 5.5 V regardless of VCC, allowing direct interfacing with 5 V TTL sources while powered from 3.3 V or lower rails.

Key Specifications

Pinout & Package

XSON8 package (SOT1203): extremely thin, leadless, 1.35 mm × 1.0 mm × 0.35 mm body with 8 exposed terminals; thermal pad not present; pin 1 index located at lower-left corner below marking "VV".

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar Schmitt-trigger buffer applications.

Compared with SN74LVC3G17DCUR, the 74LVC3G17GS,115 offers superior board-space efficiency and higher thermal resistance, making it optimal for ultra-dense layouts; compared with 74LVC1G17GW,125, it provides triple-channel integration at minimal area premium - reducing BOM count and routing complexity in multi-signal systems.

Availability

74LVC3G17GS,115 is available at Aetrix Electronics and suitable for industrial sensor interface, automotive body electronics, microcontroller peripheral buffering, and pushbutton debounce applications requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74LVC3G17GS,115 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

Nexperia is a global semiconductor expert headquartered in Nijmegen, Netherlands, specializing in high-performance logic, discrete, and MOSFET solutions for automotive, industrial, and consumer markets.

The 74LVC3G17GS belongs to Nexperia's LVC (Low-Voltage CMOS) logic family, engineered for robust mixed-voltage interoperability, low static/dynamic power, and high-noise immunity in space- and energy-constrained embedded systems.

FAQ

Can 74LVC3G17GS,115 operate with VCC = 1.8 V while accepting 5 V inputs?

Yes. The device supports VCC from 1.65 V to 5.5 V and tolerates input voltages up to 5.5 V regardless of supply level. At VCC = 1.8 V, VT+ is 0.70–1.50 V and VT− is 0.25–0.90 V, providing functional hysteresis. Input clamp diodes and IOFF protection remain active, ensuring safe operation without external components.

What is the maximum capacitive load the outputs can drive while maintaining specified tpd?

The datasheet specifies propagation delay (tpd) with CL = 30–50 pF, depending on VCC and test conditions. Output drive capability remains within specification up to 50 pF. For loads exceeding 50 pF, tpd increases linearly - e.g., at CL = 100 pF and VCC = 3.3 V, typical tpd rises from 3.6 ns to ~5.2 ns. Layout parasitics should be included in total CL budget.

Does 74LVC3G17GS,115 require external pull-up or pull-down resistors on unused inputs?

No. Unused inputs may be tied directly to VCC or GND. Due to Schmitt-trigger inputs, floating connections are strongly discouraged - they cause undefined output states and increased ICC. Tying to rail ensures deterministic logic level and minimizes power consumption; no resistor is needed because input leakage is ≤±1 μA.

How does the IOFF feature behave during power sequencing when VCC ramps after other system rails?

When VCC = 0 V, IOFF forces all outputs into high-impedance state, blocking current flow even if inputs or outputs are biased to 5 V. As VCC rises above ~0.8 V, outputs transition from Hi-Z to active drive. This behavior prevents back-current injection into powered-down sections - critical for safe hot-swap and asymmetric power-up sequences in modular systems.