Diodes Incorporated 74LVC1G17FS3-7

Overview

74LVC1G17FS3-7 from Diodes Incorporated is a single-channel Schmitt-trigger buffer IC in X2-DFN0808-4 package, operating from 1.65V to 5.5V supply. It provides noise-immune signal conditioning with 0.35V–1.20V hysteresis, ±24mA output drive at 3.3V, and 5.5V-tolerant inputs-enabling voltage-level shifting in mixed-voltage digital interfaces such as USB peripheral control or sensor signal conditioning.

For engineers reviewing the 74LVC1G17FS3-7 datasheet, 74LVC1G17FS3-7 pinout, 74LVC1G17FS3-7 application, or 74LVC1G17FS3-7 equivalent, key selection criteria include input hysteresis width across V_CC, IOFF-enabled partial power-down isolation, thermal resistance (θ_JA = 400°C/W), and compatibility with 0.48mm pitch DFN assembly processes.

Technical Context

The device implements a non-inverting Schmitt-trigger transfer function with separate positive-going (V_T+) and negative-going (V_T−) input thresholds-ensuring robust noise rejection on slow or noisy signals. Its IOFF circuit actively disables outputs during power-down, preventing back-current flow when V_CC = 0V while inputs remain at 5.5V.

Switching performance is characterized up to 125°C with t_PD ≤ 6.5ns (V_CC = 3.3V, C_L = 15pF) and supports CL loads up to 50pF. Input hysteresis ΔV_T scales with supply voltage-from 0.30V at 1.65V to 1.20V at 5.5V-maintaining consistent noise margin across its full operating range.

Key Specifications

Pinout & Package

X2-DFN0808-4 is a 0.8mm × 0.8mm, 0.48mm pitch, 4-terminal chip-scale package with exposed thermal pad (non-electrical). Pin 1 marked by chamfered corner; no internal die attach pad connection.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC1G17DBVR and 74AUP1G17GW,125, the 74LVC1G17FS3-7 delivers optimal balance of miniature size (0.64mm²), industrial temperature support (−40°C to +125°C), and full 3.3V/5V interoperability-making it preferred for space-constrained, mixed-voltage embedded control nodes.

Availability

74LVC1G17FS3-7 is available at Aetrix Electronics and suitable for USB peripheral design, industrial sensor interfacing, low-power wake-up circuits, and legacy bus level translation requiring stable component supply and long-term manufacturability.

Supply support for 74LVC1G17FS3-7 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

Diodes Incorporated is a global semiconductor company specializing in discrete, analog, and mixed-signal solutions for industrial, computing, communications, and consumer markets.

The 74LVC logic family targets high-speed, low-voltage, mixed-supply digital interface applications-with the 74LVC1G17 specifically engineered for noise-immune signal conditioning in space-constrained, thermally demanding environments.

FAQ

What is the minimum recommended V_CC for guaranteed Schmitt-trigger operation?

The device is fully specified from 1.65V to 5.5V. At V_CC = 1.65V, VT+ is 0.70V min and VT− is 0.30V max, yielding ≥0.30V hysteresis-sufficient for reliable noise rejection in low-voltage applications like coin-cell-powered sensors.

Can 74LVC1G17FS3-7 be used with 5V inputs while powered from 1.8V?

Yes. Inputs tolerate up to 5.5V regardless of V_CC level. When V_CC = 1.8V, the output swings rail-to-rail (0V to 1.8V), enabling safe 5V-to-1.8V unidirectional level translation without external components.

Does the X2-DFN0808-4 package require solder paste stencil aperture reduction?

Yes. Diodes recommends 80% area ratio for the 0.22mm-wide pads. The suggested pad layout (Document DS35124 Rev. 8, page 16) specifies 0.32mm × 0.32mm copper features with 0.106mm solder mask opening-critical to prevent bridging and ensure void-free reflow on the 0.48mm pitch.

How does IOFF behavior affect system-level power sequencing?

When V_CC = 0V, IOFF disables both output FETs, limiting leakage to ±10μA even if input or output pins are held at 5.5V. This eliminates risk of back-current into unpowered domains-simplifying power sequencing in multi-rail systems like FPGA carrier boards with independent I/O bank supplies.