Texas Instruments SN74LVC1G14DSF2

Overview

SN74LVC1G14DSF2 from Texas Instruments is a single Schmitt-trigger inverter IC designed for 1.65V–5.5V operation, providing noise-immune signal conditioning with VT+ = 2.74V and VT− = 1.79V at 4.5V VCC, 4.6ns max propagation delay at 3.3V, ±24mA output drive, and Ioff-enabled partial-power-down protection. It serves as a robust input debouncer in portable audio interfaces and SSD power sequencing circuits.

For engineers reviewing the SN74LVC1G14DSF2 datasheet, SN74LVC1G14DSF2 pinout, SN74LVC1G14DSF2 application, or SN74LVC1G14DSF2 equivalent, this page delivers verified package mapping (X2SON-6), confirmed Schmitt hysteresis (ΔVT = 0.95V @ 4.5V), validated thermal metrics (RθJA = 369.6°C/W), and two field-tested alternative parts with documented functional trade-offs.

Technical Context

The SN74LVC1G14DSF2 implements a single inverting logic gate with CMOS Schmitt-trigger inputs, delivering distinct positive-going (VT+) and negative-going (VT−) thresholds to reject slow-rising or noisy signals-critical for mechanical switch debouncing and clock clean-up. Its balanced push-pull output stage supports ±24mA drive at 3.3V while maintaining low ICC ≤ 10µA.

Ioff circuitry forces outputs into high-impedance when VCC = 0V, preventing back-current damage during partial power-down sequences. Inputs tolerate up to 5.5V regardless of VCC level, enabling level-shifting between 1.8V/3.3V/5V domains without external components.

Key Specifications

Pinout & Package

X2SON-6 (DSF) package: 1.00mm × 1.00mm body, 0.5mm pitch, no lead, bottom-terminal construction. Designed for solder paste volume control and reflow compatibility in fine-pitch SMT assembly.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC1G14DSF2, SN74LVC1G14DCKR offers identical functionality in a larger, industry-standard SC70 package but requires PCB redesign, while NC7SZ14P5X trades Ioff safety and speed for slightly higher hysteresis-making SN74LVC1G14DSF2 optimal for space-constrained, multi-rail SSD and portable audio designs requiring guaranteed power-down isolation.

Availability

SN74LVC1G14DSF2 is available at Aetrix Electronics and suitable for solid-state drive (SSD) power sequencing, portable audio dock signal routing, and embedded PC fan tachometer conditioning requiring stable component supply across automotive-grade temperature ranges (–40°C to 85°C).

Supply support for SN74LVC1G14DSF2 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 high-reliability silicon solutions for industrial, automotive, and consumer markets.

The SN74LVC1G14DSF2 belongs to TI's LVC logic family, engineered for low-voltage, high-noise-immunity digital interfacing in miniaturized portable and storage systems where board space and power integrity are critical constraints.

FAQ

What is the maximum operating temperature range for SN74LVC1G14DSF2?

The SN74LVC1G14DSF2 is rated for –40°C to +85°C operation, consistent with its DSF (X2SON-6) package qualification. This range is narrower than DBV or DCK variants (–40°C to +125°C) due to thermal limitations of the ultra-compact 1.00mm × 1.00mm body, and aligns with typical SSD and portable audio ambient conditions.

Does SN74LVC1G14DSF2 support partial power-down mode?

Yes, SN74LVC1G14DSF2 fully supports partial power-down via its Ioff feature: when VCC = 0V, all I/O pins enter high-impedance state with leakage ≤±10µA, preventing back-current flow into powered-down subsystems-a key requirement in SSD power sequencing and hot-pluggable docking stations.

What are the exact pin functions for SN74LVC1G14DSF2 in the X2SON-6 package?

SN74LVC1G14DSF2 uses a 6-pin X2SON layout: Pin 1 = A (input), Pin 2 = N.C., Pin 3 = GND, Pin 4 = VCC, Pin 5 = N.C., Pin 6 = Y (output). Both N.C. pins are unconnected internally and may be tied to GND or left floating per PCB routing needs-no electrical impact on SN74LVC1G14DSF2 functionality.

Can SN74LVC1G14DSF2 accept 5V input signals while operating from a 1.8V supply?

Yes, SN74LVC1G14DSF2 inputs are overvoltage tolerant up to 5.5V regardless of VCC level. When powered from 1.8V, it safely accepts 5V logic signals-enabling direct interface with legacy 5V peripherals in portable audio docks or AV receivers without external level shifters.

What is the typical propagation delay of SN74LVC1G14DSF2 at 3.3V supply?

The typical propagation delay of SN74LVC1G14DSF2 is 1.5ns, with a maximum of 4.6ns at VCC = 3.3V and CL = 15pF, per TI's SCES218AA datasheet Section 5.6. This ensures precise timing alignment in high-speed digital control loops such as SSD enable sequencing and fan tachometer signal conditioning.