Texas Instruments SN74LVC1G17DBVTG4

Overview

SN74LVC1G17DBVTG4 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). It delivers ±24 mA output drive at 3.3 V, achieves 4.6 ns max propagation delay, and supports 5.5 V-tolerant inputs - enabling level translation in noise-prone signal conditioning paths such as audio interface buffers and SSD control lines.

For engineers reviewing the SN74LVC1G17DBVTG4 datasheet, SN74LVC1G17DBVTG4 pinout, SN74LVC1G17DBVTG4 application, or SN74LVC1G17DBVTG4 equivalent, key selection criteria include its Schmitt-trigger input thresholds (V_T+ = 1.48 V / V_T− = 0.89 V at 3 V), I_off support for live insertion, ultra-small SOT-23-5 package (2.9 mm × 1.6 mm body), and guaranteed operation across –40°C to 125°C.

Technical Context

The SN74LVC1G17DBVTG4 implements a non-inverting Schmitt-trigger buffer with asymmetric input thresholds to reject noise on slow-rising or noisy digital signals. Its CMOS design maintains low static current (I_CC ≤ 10 μA) while delivering high drive strength, and the I_off feature disables outputs when V_CC = 0 V, preventing back-drive current during partial power-down.

It operates across a wide supply range (1.65–5.5 V), accepts input voltages up to 5.5 V regardless of V_CC, and is fully characterized for switching performance (t_pd ≤ 4.6 ns at 3.3 V, CL = 15 pF) and thermal behavior (R_θJA = 357.1°C/W in DBV package) over industrial and extended temperature ranges.

Key Specifications

Pinout & Package

SOT-23-5 (DBV) package: 2.9 mm × 2.8 mm footprint, 2.9 mm × 1.6 mm body size, 0.95 mm nominal height, gull-wing leads, RoHS-compliant NiPdAu lead finish, MSL Level-1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC1G17DBVR and MC74VHC1G17DTT1G, the SN74LVC1G17DBVTG4 offers identical functionality in a small-tape format ideal for evaluation and low-volume manufacturing, with superior low-voltage compatibility (down to 1.65 V) and tighter propagation delay control across voltage and temperature.

Availability

SN74LVC1G17DBVTG4 is available at Aetrix Electronics and suitable for audio interface buffering, SSD control signal conditioning, industrial sensor interfacing, and USB peripheral power sequencing requiring stable component supply, consistent parametric performance, and long-term industrial-grade availability.

Supply support for SN74LVC1G17DBVTG4 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, industry-qualified components.

The SN74LVC1G17DBVTG4 belongs to TI's LVC logic family, engineered for low-voltage, high-noise-immunity digital interfacing in space-constrained, thermally demanding applications such as consumer audio, enterprise storage, and industrial control.

FAQ

What is the function of the NC pin on the SN74LVC1G17DBVTG4?

The NC (No Connect) pin on the SN74LVC1G17DBVTG4 is internally unconnected and serves no electrical function. Per TI's recommended layout practices, it may be left floating or tied to GND to improve mechanical stability and reduce potential antenna effects - but it must never be connected to V_CC or driven externally. This pin has no impact on the operation of the SN74LVC1G17DBVTG4.

Does the SN74LVC1G17DBVTG4 support 1.8 V operation?

Yes, the SN74LVC1G17DBVTG4 is fully specified for 1.65 V to 5.5 V V_CC operation, including reliable 1.8 V functionality. At 1.8 V, it delivers ≥2 mA output drive, maintains hysteresis (ΔV_T ≥ 0.36 V), and achieves t_pd ≤ 9.9 ns (CL = 15 pF), making it suitable for low-power IoT sensor nodes and battery-operated audio accessories where the SN74LVC1G17DBVTG4 interfaces with 1.8 V microcontrollers.

How does the I_off feature work in the SN74LVC1G17DBVTG4?

The I_off circuitry in the SN74LVC1G17DBVTG4 automatically disables both input and output structures when V_CC = 0 V, limiting leakage current to ±10 μA. This prevents back-driving of powered circuitry through the SN74LVC1G17DBVTG4 during hot-swap events or partial power-down - critical for modular SSDs, field-replaceable audio modules, and industrial backplanes where the SN74LVC1G17DBVTG4 buffers inter-board control signals.

Can the SN74LVC1G17DBVTG4 be used as a line driver for long traces?

The SN74LVC1G17DBVTG4 can drive moderate trace lengths (≤10 cm FR-4, ≤30 pF load) reliably due to its ±24 mA drive strength at 3.3 V and controlled edge rates. However, for longer traces or high-frequency signals (>50 MHz), series termination or an external driver is recommended - the SN74LVC1G17DBVTG4 is optimized for local signal conditioning, not transmission-line driving. Always verify signal integrity with scope measurements on the target board.

What is the maximum input voltage the SN74LVC1G17DBVTG4 can tolerate?

The SN74LVC1G17DBVTG4 accepts input voltages up to 5.5 V regardless of V_CC level - a key feature enabling level translation from legacy 5 V logic to modern low-voltage domains. This tolerance is absolute (not dependent on V_CC), verified across –40°C to 125°C, and applies to both static and dynamic conditions. No external clamping is required when interfacing with 5 V microcontrollers or sensors feeding the SN74LVC1G17DBVTG4.