Texas Instruments SN74AUC1G17DRLR

Overview

SN74AUC1G17DRLR from Texas Instruments is a single Schmitt-trigger buffer IC optimized for 1.65–1.95 V operation, delivering 2.4 ns max propagation delay at 1.8 V, ±8 mA output drive, and Ioff-enabled partial power-down protection. It serves as a noise-immune signal conditioner in high-speed low-voltage digital interfaces such as USB PHY control lines, display timing buffers, and SSD power sequencing logic.

For engineers reviewing the SN74AUC1G17DRLR datasheet, SN74AUC1G17DRLR pinout, SN74AUC1G17DRLR application, or SN74AUC1G17DRLR equivalent, key selection criteria include its sub-1-V operability, 10 µA max ICC, 0.37–0.62 V hysteresis (ΔVT) at 1.65 V, 3.6-V I/O tolerance, and NanoFree™ SOT-5X3 package compatibility with space-constrained portable designs.

Technical Context

The SN74AUC1G17DRLR implements a noninverting Schmitt-trigger buffer (Y = A) with asymmetric input thresholds: VT+ = 0.79–1.16 V and VT− = 0.39–0.62 V at 1.65 V supply, enabling robust noise rejection on slow-rising or floating CMOS inputs. Its Ioff circuitry actively disables outputs during power-down to prevent back-drive current.

Designed for mixed-mode signal environments, the device supports 0.8–2.7 V VCC operation while maintaining 3.6-V I/O tolerance-allowing safe interfacing between 1.8-V logic and 3.3-V subsystems without level shifters. All electrical characteristics are fully specified across −40°C to +85°C.

Key Specifications

Pinout & Package

SOT-5X3 (DRL) package: 1.60 mm × 1.20 mm × 0.6 mm body, 5-pin ultra-miniature surface-mount outline with exposed pad option (not electrically connected), compatible with standard 0.5-mm pitch reflow processes.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC1G17DCKR and 74AUP1G17GW,125, the SN74AUC1G17DRLR uniquely balances sub-1-V operation, 2.4 ns speed, and Ioff protection-making it optimal for space- and power-constrained 1.8-V embedded interfaces where noise immunity and mixed-voltage interoperability are critical.

Availability

SN74AUC1G17DRLR is available at Aetrix Electronics and suitable for portable audio, solid-state storage, and embedded display applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for SN74AUC1G17DRLR 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 over 50 years of innovation in high-reliability, low-power IC design.

The SN74AUC1G17DRLR belongs to TI's AUC Sub-1-V Little Logic family-engineered specifically for noise-immune signal conditioning in battery-powered portable electronics operating below 2 V.

FAQ

What is the minimum supply voltage at which SN74AUC1G17DRLR guarantees operation?

The SN74AUC1G17DRLR is fully specified from 0.8 V to 2.7 V VCC, with guaranteed functionality-including Schmitt thresholds, output drive, and propagation delay-at 0.8 V. At this voltage, tpd is 5.7 ns (CL = 15 pF), and output drive is ±0.7 mA. The device remains operational down to 0.8 V, making SN74AUC1G17DRLR suitable for ultra-low-power auxiliary rails in modern SoCs and energy-harvesting systems.

Does SN74AUC1G17DRLR support hot insertion or partial power-down scenarios?

Yes. SN74AUC1G17DRLR features an Ioff circuit that disables outputs when VCC = 0 V, preventing damaging current backflow from live I/O pins into the unpowered device. This allows safe hot-plug operation in modular systems and supports controlled power sequencing in multi-rail designs-key behavior confirmed in Section 3 and Table 1 of the official datasheet for SN74AUC1G17DRLR.

Can SN74AUC1G17DRLR interface directly with 3.3-V logic without level shifters?

Yes. SN74AUC1G17DRLR has 3.6-V I/O tolerance: both input and output pins safely accept and drive up to 3.6 V regardless of VCC setting (0.8–2.7 V). This allows direct connection to 3.3-V buses-for example, driving a 3.3-V enable line from a 1.8-V microcontroller-without external components, as verified in Section 6.3 (Recommended Operating Conditions) of the SN74AUC1G17DRLR datasheet.

What is the hysteresis voltage (ΔVT) of SN74AUC1G17DRLR at 1.8-V supply?

At VCC = 1.8 V, SN74AUC1G17DRLR exhibits VT+ = 0.95–1.31 V and VT− = 0.58–0.87 V, yielding a hysteresis ΔVT of 0.37–0.44 V. This value is measured under recommended conditions and ensures reliable noise rejection on slow or noisy inputs-critical for SN74AUC1G17DRLR use in display enable lines, reset signal conditioning, and USB ID detection where signal integrity is compromised by board parasitics.

Is the NC pin on SN74AUC1G17DRLR required to be terminated?

No. Pin 1 of SN74AUC1G17DRLR is designated NC (No internal connection) and has no electrical function. TI's datasheet explicitly states it may be left floating or tied to GND for mechanical stability-no termination is required for electrical performance. This simplifies layout in dense portable PCBs where routing resources are constrained, and applies specifically to the SN74AUC1G17DRLR SOT-5X3 variant per Package Drawing DRL0005A.