Diodes Incorporated 74LVC1G17FW4-7

Overview

74LVC1G17FW4-7 from Diodes Incorporated is a single 1-input Schmitt-trigger buffer with push-pull output, designed for voltage level shifting and noise-immune signal conditioning in mixed-voltage digital systems. It operates from 1.65V to 5.5V, tolerates 5.5V inputs, supports partial power-down via IOFF, and delivers ±24mA drive at 3.3V - used in notebook I/O buffering and peripheral interface isolation.

For engineers reviewing the 74LVC1G17FW4-7 datasheet, 74LVC1G17FW4-7 pinout, 74LVC1G17FW4-7 application, or 74LVC1G17FW4-7 equivalent, key selection criteria include hysteresis width (0.35–1.20V), propagation delay (0.7–6.5ns at 3.3V/15pF), IOFF leakage (<±10μA), 5.5V-tolerant inputs, and X2-DFN1010-6 package thermal resistance (θJA = 445°C/W).

Technical Context

This device implements a non-inverting Schmitt-trigger transfer function with programmable hysteresis (ΔVT = 0.35–1.20V depending on VCC), enabling robust noise rejection on slow or noisy input signals. Its IOFF circuit actively disables output during power-down, preventing back-current flow when VCC = 0V while inputs remain at 5.5V.

The logic diagram confirms a single A→Y path with no internal inversion; input threshold voltages (VT+ = 1.50–3.33V, VT− = 0.80–2.35V at VCC = 3–5.5V) are supply-dependent and fully specified across −40°C to +125°C. Output drive strength scales with VCC, delivering −24mA/+24mA at 3.3V with VOL ≤ 0.55V and VOH ≥ 2.0V under load.

Key Specifications

Pinout & Package

X2-DFN1010-6 is a 1.0mm × 1.0mm, 0.4mm pitch, 6-terminal chip-scale package with exposed thermal pad; pin 1 marked by chamfered corner. Terminal layout optimized for minimal parasitic inductance and thermal dissipation in space-constrained PCBs.

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 74LVC1G17FW4-7 uniquely balances 5.5V input tolerance, X2-DFN1010-6 miniaturization, and full −40°C to +125°C operation - making it optimal for next-gen portable and automotive edge electronics requiring both size and robustness.

Availability

74LVC1G17FW4-7 is available at Aetrix Electronics and suitable for USB-C interface design, industrial sensor signal conditioning, mobile keypad debouncing, and automotive infotainment button isolation requiring stable component supply across extended temperature ranges and high-volume production cycles.

Supply support for 74LVC1G17FW4-7 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 ICs, with emphasis on power management, signal integrity, and precision timing solutions for industrial, computing, and automotive markets.

The 74LVC logic family targets high-speed, low-voltage general-purpose digital interfacing - engineered for interoperability across voltage domains and robust operation in electrically noisy environments.

FAQ

Can 74LVC1G17FW4-7 operate reliably at 1.65V supply while driving a 15pF load?

Yes. The datasheet specifies tPD ≤ 9.9ns and VOH ≥ 1.2V at VCC = 1.65V with IOH = −4mA, confirming functional timing and voltage margins. Output drive remains adequate for short PCB traces or light capacitive loads, though propagation delay increases versus 3.3V operation.

Is the X2-DFN1010-6 package compatible with standard reflow profiles for lead-free soldering?

Yes. The device is rated for moisture sensitivity level 1 (MSL-1) per J-STD-020 and qualified for peak reflow temperatures up to 260°C. Its NiPdAu terminal finish ensures reliable wetting and intermetallic formation under standard IPC-J-STD-020 Class 3 profiles.

Does the IOFF feature require external pull-up/pull-down resistors on A or Y pins during power-down?

No. IOFF internally disables the output FETs when VCC = 0V, presenting high-impedance on Y regardless of A voltage. External resistors are unnecessary unless required for system-level default states - e.g., keeping downstream logic in reset.

How does hysteresis vary with temperature and supply voltage?

ΔVT ranges from 0.32V (min, 3V/−40°C) to 1.40V (max, 5.5V/+125°C). At nominal 3.3V and 25°C, ΔVT is typically 0.65V. This variation is fully characterized and guaranteed across operating conditions - no derating needed for design margin.