Texas Instruments SN74AUC1G17YZAR

Overview

SN74AUC1G17YZAR from Texas Instruments is a single-channel Schmitt-trigger buffer IC optimized for 1.8-V operation with 3.6-V I/O tolerance, 2.4-ns max propagation delay at 1.8 V, ±8-mA output drive, and sub-1-V operability down to 0.8 V. It performs Y = A logic in mixed-signal interfaces requiring noise immunity and level translation.

For engineers reviewing the SN74AUC1G17YZAR datasheet, SN74AUC1G17YZAR pinout, SN74AUC1G17YZAR application, or SN74AUC1G17YZAR equivalent, key selection criteria include its NanoFree WCSP package, Ioff partial-power-down support, Schmitt-trigger hysteresis (0.37–0.62 V at 1.65 V), and 10-µA max ICC for ultra-low-power portable and battery-operated systems.

Technical Context

This device implements a noninverting Schmitt-trigger buffer with asymmetric input thresholds: VT+ = 0.79–1.16 V and VT− = 0.39–0.62 V at 1.65 V, yielding 0.37–0.62 V hysteresis for robust noise rejection in noisy digital environments. Its Ioff circuitry actively disables outputs during power-down to prevent backflow current.

The SN74AUC1G17YZAR operates across 0.8–2.7 V VCC, supports 3.6-V tolerant inputs/outputs, and delivers rail-to-rail switching with VOL ≤ 0.45 V and VOH ≥ 1.2 V at 1.65 V with 8-mA load - enabling direct interfacing between 1.8-V logic and higher-voltage peripherals.

Key Specifications

Pinout & Package

NanoFree™ WCSP (DSBGA) package: 5-bump, 0.4-mm pitch, 0.87 mm × 0.87 mm footprint, Pb-free, bottom-side solder bumps. Pin 1 identified by Pb-free bump marker (•).

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC1G17DBVR and NC7SZ17P5X, the SN74AUC1G17YZAR uniquely combines sub-1-V operation, Ioff-enabled power-domain isolation, and 3.6-V I/O tolerance in a 0.87-mm² NanoFree package - making it the only option for space-constrained, multi-voltage, battery-powered systems requiring robust noise immunity and safe power sequencing.

Availability

SN74AUC1G17YZAR is available at Aetrix Electronics and suitable for industrial sensor interfaces, portable medical devices, USB-C port controllers, and IoT edge node wake-up circuits requiring stable component supply, long-term lifecycle support, and consistent Pb-free sourcing.

Supply support for SN74AUC1G17YZAR 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 delivering analog, embedded processing, and logic solutions with emphasis on reliability, power efficiency, and system integration.

The SN74AUC1G17YZAR belongs to TI's AUC Sub-1-V Little Logic family - engineered specifically for ultra-low-voltage, high-noise-margin signal conditioning in portable, wearable, and energy-harvesting applications.

FAQ

What is the minimum operating voltage for the SN74AUC1G17YZAR?

The SN74AUC1G17YZAR is fully specified from 0.8 V to 2.7 V VCC, with guaranteed operation down to 0.8 V. At 0.8 V, it maintains functional Schmitt-trigger behavior, 5.7-ns typical propagation delay, and valid VIH/VIL thresholds - enabling use in energy-harvesting and ultra-low-power wake-up circuits where other logic families fail.

Does the SN74AUC1G17YZAR support Ioff, and how does it function?

Yes, the SN74AUC1G17YZAR includes Ioff circuitry that disables outputs when VCC = 0 V, preventing damaging current backflow through the device. This allows safe insertion/removal in live backplanes or multi-rail systems. The Ioff leakage is specified at ±10 µA when VI or VO = 2.7 V and VCC = 0 V - verified per JESD78 Class II latch-up testing.

What is the hysteresis voltage (∆VT) of the SN74AUC1G17YZAR at 1.65 V supply?

At VCC = 1.65 V, the SN74AUC1G17YZAR exhibits a hysteresis voltage (∆VT = VT+ − VT−) of 0.37 V (min) to 0.62 V (max). This means the input threshold rises to ~1.16 V on positive edges and falls to ~0.54 V on negative edges - providing strong immunity against noise spikes up to 370 mV in amplitude.

Can the SN74AUC1G17YZAR be used with 3.3-V input signals while powered from 1.8 V?

Yes, the SN74AUC1G17YZAR features 3.6-V tolerant inputs and outputs, allowing direct connection to 3.3-V sources while operating from a 1.8-V supply. Its absolute maximum input voltage is 3.6 V, and recommended operating VI extends to 3.6 V - eliminating need for external level translators in mixed-voltage signal paths.

What package type and dimensions does the SN74AUC1G17YZAR use?

The SN74AUC1G17YZAR uses the NanoFree™ WCSP (Wafer Chip Scale Package), also labeled YZA, with a 5-bump DSBGA layout. Its footprint measures 0.87 mm × 0.87 mm, pitch is 0.4 mm, and total thickness is 0.43 mm - significantly smaller than SOT-23 or SC-70 alternatives, enabling ultra-dense PCB layouts in wearables and hearing aids.