Texas Instruments SN74LVC1G17DSFR

Overview

SN74LVC1G17 from Texas Instruments is a single Schmitt-trigger buffer IC designed for 1.65V to 5.5V V_CC operation, performing Y = A logic with hysteresis (ΔV_T = 0.51–1.04 V at 3V–5.5V), 4.6 ns max t_pd at 3.3V/15pF, ±24 mA output drive, and 5.5V-tolerant inputs. It enables robust signal conditioning in noise-prone audio and digital interface paths.

For engineers reviewing the SN74LVC1G17 datasheet, SN74LVC1G17 pinout, SN74LVC1G17 application, or SN74LVC1G17 equivalent, key selection criteria include Schmitt-trigger hysteresis width, I_off support for live insertion, ultra-small DPW package (0.8 mm × 0.8 mm), and 5.5V input tolerance enabling level translation in mixed-voltage systems.

Technical Context

The SN74LVC1G17 implements a noninverting Schmitt-trigger buffer with distinct positive-going (V_T+) and negative-going (V_T−) input thresholds-e.g., 1.48 V and 0.89 V respectively at V_CC = 3V-providing 0.59 V hysteresis to reject noise on slow or noisy signals. Its CMOS design ensures rail-to-rail output swing and low static ICC (≤10 μA).

It supports partial-power-down via I_off, disabling outputs and blocking current flow when V_CC = 0 V, while maintaining 5.5V tolerance on all I/O pins. The device operates across –40°C to 125°C and meets JESD 78 Class II latch-up (>100 mA) and JESD 22 ESD ratings (2000 V HBM, 1000 V CDM).

Key Specifications

Pinout & Package

The SN74LVC1G17 is packaged in a 5-pin X2SON (DPW) package with 0.5 mm pitch and 0.8 mm × 0.8 mm body size, optimized for space-constrained portable designs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC1G17DBVR and SN74LVC1G17DCKR, the SN74LVC1G17DSFR offers the smallest footprint (0.64 mm²) and best board-area efficiency, making it optimal for ultra-thin tablets, wireless headsets, and client SSD modules where every 0.1 mm² matters-though its 0.5 mm pitch demands tighter PCB fabrication tolerances.

Availability

SN74LVC1G17 is available at Aetrix Electronics and suitable for audio docks, solid-state drives, TV remote receivers, and tablet touch interfaces requiring stable component supply, long-term lifecycle support, and consistent parametric performance across temperature and voltage.

Supply support for SN74LVC1G17 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 expertise in high-reliability, low-power logic families.

The SN74LVC1G17 belongs to TI's LVC (Low-Voltage CMOS) logic portfolio, engineered for mixed-voltage system interfacing, noise immunity, and space-constrained portable electronics-from consumer audio to enterprise storage.

FAQ

What is the function of the SN74LVC1G17?

The SN74LVC1G17 is a single noninverting Schmitt-trigger buffer that performs Y = A logic with built-in hysteresis. It converts slow or noisy input signals into clean, rail-to-rail digital outputs. Its primary role is signal conditioning-not logic inversion or level shifting-and it is widely used in debouncing, interface isolation, and noise filtering applications where standard buffers would oscillate.

Does the SN74LVC1G17 support 5V operation?

Yes, the SN74LVC1G17 supports V_CC from 1.65 V to 5.5 V and accepts input voltages up to 5.5 V regardless of V_CC. When operated at 5 V, it delivers robust output drive (±32 mA) and maintains 4.4 ns max propagation delay. This makes the SN74LVC1G17 suitable for legacy 5V systems and mixed-voltage designs without external translators.

What does the 'DSFR' suffix indicate in SN74LVC1G17DSFR?

The 'DSFR' suffix identifies the X2SON (DPW) package variant with 5 terminals, 0.5 mm pitch, and 0.8 mm × 0.8 mm body size. It is RoHS-compliant, halogen-free, and rated for –40°C to +125°C operation. The marking 'C17S' appears on the top surface, and the device ships in 3000-unit tape-and-reel format per TI's orderable packaging data.

Can the SN74LVC1G17 be used for switch debouncing?

Yes-the SN74LVC1G17 is ideal for mechanical switch debouncing due to its Schmitt-trigger input with programmable hysteresis (e.g., 0.59 V at 3V). When paired with a simple RC network (e.g., 10 kΩ pull-up + 100 nF capacitor), it cleanly converts noisy switch transitions into monotonic logic edges. Its low ICC (≤10 μA) also minimizes battery drain in portable devices using the SN74LVC1G17.

Is I_off supported on the SN74LVC1G17DSFR?

Yes, the SN74LVC1G17DSFR fully supports I_off, which disables output drivers and limits I/O leakage to ≤±10 μA when V_CC = 0 V. This feature protects downstream circuitry during hot insertion, partial power-down, or system sleep modes. It is explicitly characterized in TI's datasheet Section 5.5 and validated across –40°C to +125°C for the DSFR variant.