Diodes Incorporated 74AUP1G17FS3-7

Overview

74AUP1G17FS3-7 from Diodes Incorporated is a single-channel Schmitt-trigger buffer IC in an ultra-low-power CMOS logic family, designed for noise-immune signal conditioning in battery-powered systems. It operates from 0.8V to 3.6V, delivers ±4mA output drive at 3.0V, features IOFF partial power-down protection, and exhibits 250mV typical hysteresis at VCC = 3.0V - enabling robust interfacing with slow-rising signals in portable electronics.

For engineers reviewing the 74AUP1G17FS3-7 datasheet, 74AUP1G17FS3-7 pinout, 74AUP1G17FS3-7 application, or 74AUP1G17FS3-7 equivalent, key selection criteria include supply voltage flexibility (0.8–3.6V), sub-1µA static current, Schmitt-trigger input threshold stability across temperature, and DFN0808-4 package thermal performance for space-constrained PCB layouts.

Technical Context

This device implements a non-inverting positive-Boolean function (Y = A) with hysteresis-based input thresholding - VT+ = 1.61–2.32V and VT− = 0.88–1.24V at 3.0V supply - ensuring reliable noise rejection on noisy or slow-slew digital lines. Its IOFF circuit actively disables outputs during power-down, preventing back-current flow when VCC = 0V while inputs remain biased.

The X2-DFN0808-4 package (0.8mm × 0.8mm × 0.35mm, 0.5mm pad pitch) supports high-density routing and achieves θJA = 430°C/W on standard FR-4, while propagation delay ranges from 1.5ns (min) to 4.0ns (max) at 3.3V/CL = 5pF, scaling predictably with load capacitance up to 30pF.

Key Specifications

Pinout & Package

X2-DFN0808-4 is a 4-terminal, leadless, diamond-layout package measuring 0.8mm × 0.8mm × 0.35mm with 0.5mm pad pitch and exposed thermal pad (no internal connection). It uses JEDEC-standard pin 1 marking (dot or chamfer) and requires solder paste stencil optimization per AP02001.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC1G17DBVR and 74LVC1G17GW,125, the 74AUP1G17FS3-7 uniquely combines ultra-low ICC (<0.9µA), 0.8V start-up, and guaranteed IOFF - making it the only option for energy-harvesting nodes or multi-rail portable devices requiring true zero-power isolation.

Availability

74AUP1G17FS3-7 is available at Aetrix Electronics and suitable for battery-powered wearables, IoT edge sensors, and USB-C accessory designs requiring stable component supply, long-lifecycle support, and consistent DFN0808-4 packaging.

Supply support for 74AUP1G17FS3-7 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 power management, signal integrity, and connectivity applications.

The 74AUP logic family targets ultra-low-power portable electronics, emphasizing sub-1µA static current, wide-VCC operability, and robust IOFF behavior for modern battery-constrained systems.

FAQ

What is the minimum supply voltage for reliable operation of the 74AUP1G17FS3-7?

The device is fully specified down to 0.8V, with guaranteed functionality including Schmitt-trigger thresholds, output drive, and IOFF behavior across the entire -40°C to +125°C temperature range. At 0.8V, propagation delay increases to 19ns (typical) and output drive reduces to ±20µA, but logic states remain valid and noise immunity is preserved.

Does the 74AUP1G17FS3-7 require external pull-up or pull-down resistors on its input or output?

No. The input is a CMOS Schmitt trigger with defined VT+ and VT− thresholds and no internal pull-up/down; unused inputs must be externally tied to VCC or GND per datasheet Note 8. The output is push-pull and does not require external termination unless driving transmission lines exceeding 10cm or capacitive loads above 30pF.

How does the IOFF feature behave when VCC is ramped down during system power sequencing?

IOFF activates when VCC drops below approximately 0.3V, forcing the output into high-impedance state regardless of input voltage. This prevents reverse current flow from powered downstream logic (e.g., 3.3V MCU) into the unpowered 74AUP1G17FS3-7, protecting both devices during asymmetric power-down sequences.

Can the 74AUP1G17FS3-7 drive a 50Ω transmission line directly?

No. Its ±4mA output drive at 3.0V corresponds to ~750Ω effective impedance - insufficient for 50Ω line matching. For controlled-impedance routing, use a dedicated line driver or add series termination. However, it can reliably drive unterminated traces up to 10cm on FR-4 with CL ≤ 15pF and maintain <1ns jitter under typical conditions.