Texas Instruments SN74LVC1G17DCKT

Overview

SN74LVC1G17DCKT from Texas Instruments is a single-channel Schmitt-trigger buffer IC designed for signal conditioning in noise-prone or slow-rising digital interfaces. It operates from 1.65V to 5.5V V_CC, delivers ±24mA output drive at 3.3V, achieves 4.6ns max propagation delay, and features 5.5V-tolerant inputs - enabling level translation in mixed-voltage systems such as USB peripheral buffers and display interface line drivers.

For engineers reviewing the SN74LVC1G17DCKT datasheet, SN74LVC1G17DCKT pinout, SN74LVC1G17DCKT application, or SN74LVC1G17DCKT equivalent, key selection criteria include its ultra-compact SC70-5 package (2.0mm × 2.1mm), I_off support for live insertion and partial power-down, and hysteresis thresholds (VT+ = 1.48V, VT− = 0.89V at 3V) critical for reliable edge detection in audio dock and SSD control paths.

Technical Context

The SN74LVC1G17DCKT implements a noninverting Schmitt-trigger buffer (Y = A) with asymmetric input thresholds to reject noise on slow or noisy signals. Its CMOS design maintains low static current (≤10μA ICC) across the full 1.65–5.5V supply range while delivering rail-to-rail output swing and robust ±24mA drive capability at 3.3V.

It supports partial-power-down operation via I_off, which disables outputs and blocks current backflow when V_CC = 0V - essential for hot-swap applications in telecom AC/DC controllers and portable audio docks. Input tolerance up to 5.5V allows interfacing with higher-voltage logic without external level shifters.

Key Specifications

Pinout & Package

SN74LVC1G17DCKT uses the SC70-5 (DCK) package: 2.0mm × 2.1mm body, 0.65mm nominal height, 5-pin surface-mount with standard 0.65mm pitch. Pin 1 is marked by a dot; device orientation follows JEDEC MO-203-DA.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC1G17DBVT and 74LVC1G17GW,125, SN74LVC1G17DCKT offers the smallest footprint among functionally equivalent Schmitt buffers while maintaining full industrial temperature range and identical I/O behavior - making it optimal for high-density consumer electronics where board space is constrained.

Availability

SN74LVC1G17DCKT is available at Aetrix Electronics and suitable for audio dock interfaces, SSD power sequencing, TV panel timing control, and wireless peripheral wake signal conditioning requiring stable component supply and long-term production continuity.

Supply support for SN74LVC1G17DCKT 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 connectivity technologies with over 50 years of innovation in precision logic and interface solutions.

The SN74LVC1G17 belongs to TI's LVC logic family - engineered for low-voltage, high-speed, mixed-signal interface applications in portable, industrial, and consumer electronics where noise immunity and space efficiency are critical.

FAQ

What is the maximum operating temperature for SN74LVC1G17DCKT?

The SN74LVC1G17DCKT is rated for continuous operation from –40°C to +125°C ambient temperature. This extended range supports deployment in demanding environments such as solid-state drive controllers, automotive infotainment displays, and industrial power supplies where thermal management is challenging. The SC70-5 package's R_θJA of 371°C/W must be considered in thermal design.

Does SN74LVC1G17DCKT support level translation between different supply voltages?

Yes, SN74LVC1G17DCKT supports down-translation: its inputs tolerate up to 5.5V regardless of V_CC, allowing a 5V signal to safely drive the buffer while V_CC is at 1.8V, 2.5V, or 3.3V. The output swings rail-to-rail relative to V_CC, so it translates high-voltage inputs to lower-voltage logic levels without external components.

What is the purpose of the N.C. pin on SN74LVC1G17DCKT?

Pin 3 of SN74LVC1G17DCKT is marked N.C. (No internal connection). It has no electrical function and must remain unconnected. TI recommends leaving it floating or optionally tying it to GND or V_CC for mechanical stability - but never driving it, as that could compromise solder joint reliability or cause unintended coupling.

How does the Schmitt-trigger functionality benefit SN74LVC1G17DCKT in real-world applications?

The Schmitt-trigger input of SN74LVC1G17DCKT provides hysteresis (0.51V at 3V), giving it distinct high- and low-thresholds (VT+ = 1.48V, VT− = 0.89V). This prevents oscillation on slow or noisy signals - for example, in MP3 player power-on reset lines or PDA wake buttons - where standard buffers would chatter due to marginal input transitions.

Is SN74LVC1G17DCKT suitable for hot-swap or partial-power-down systems?

Yes, SN74LVC1G17DCKT includes I_off circuitry that disables outputs and limits leakage to ≤±10μA when V_CC = 0V. This protects downstream circuitry from back-drive currents during live insertion - a key requirement in modular audio docks, SSD add-in cards, and telecom server power modules where subsystems power up/down independently.