Texas Instruments SN74AUP1G79DSFR

Overview

SN74AUP1G79DSFR from Texas Instruments is a single positive-edge-triggered D-type flip-flop in a 1.00 mm × 1.00 mm 6-pin SON package, operating across 0.8 V to 3.6 V supply, with 4 ns max propagation delay at 3.3 V, 0.9 µA max ICC, and Ioff support for partial power-down mode. It serves as a low-power edge-triggered data latch in timing-critical portable interfaces.

For engineers reviewing the SN74AUP1G79DSFR datasheet, SN74AUP1G79DSFR pinout, SN74AUP1G79DSFR application, or SN74AUP1G79DSFR equivalent, key selection factors include its 3.3-V-optimized 4 ns tpd, 1.5 pF input capacitance, 3 pF typical Cpd, Ioff-enabled isolation during power sequencing, and compatibility with mixed-voltage signal domains up to 3.6 V.

Technical Context

The SN74AUP1G79DSFR implements a synchronous positive-edge-triggered D flip-flop logic function with voltage-level clock detection-decoupling triggering from input slew rate. Its design supports precise setup/hold timing (e.g., 0.6 ns tsu at 3.3 V) and maintains functional integrity over –40°C to +85°C.

It integrates balanced CMOS push-pull outputs, standard CMOS inputs with 250 mV typical hysteresis, clamp diodes for ESD robustness, and over-voltage tolerant inputs rated to 4.6 V-enabling safe interfacing with higher-voltage signals while powered from sub-1-V rails.

Key Specifications

Pinout & Package

SN74AUP1G79DSFR uses a 6-pin SON (Small Outline No-Lead) package measuring 1.00 mm × 1.00 mm with wettable flanks, optimized for space-constrained PCB layouts and automated optical inspection.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar D-type flip-flop applications.

Compared with SN74LVC1G79DBVR and 74AHC1G79GW,125, the SN74AUP1G79DSFR uniquely delivers sub-1-V operation, <1 µA static current, and Ioff-enabled isolation-making it the only choice for energy-harvesting sensors and multi-rail portable electronics requiring zero-backdrive safety.

Availability

SN74AUP1G79DSFR is available at Aetrix Electronics and suitable for barcode scanner interfaces, embedded PC power sequencing, and wireless headset button conditioning requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for SN74AUP1G79DSFR 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 and embedded processing solutions, with deep expertise in low-power logic, precision analog, and high-reliability automotive and industrial ICs.

The AUP family-including SN74AUP1G79DSFR-is engineered specifically for battery-powered portable applications demanding ultra-low static/dynamic power, wide VCC flexibility, and robust signal integrity across 0.8–3.6 V operation.

FAQ

What is the minimum supply voltage for reliable operation of the SN74AUP1G79DSFR?

The SN74AUP1G79DSFR is fully specified down to 0.8 V VCC across –40°C to +85°C, with guaranteed timing and logic functionality including 4 ns max tpd at 3.3 V and functional operation at 20 MHz at 0.8 V. Below 0.8 V, parameters are not characterized and operation is not assured. The device maintains Ioff behavior and input hysteresis even at minimum VCC.

Does the SN74AUP1G79DSFR support partial power-down mode, and how is it implemented?

Yes, the SN74AUP1G79DSFR supports partial power-down mode via its Ioff circuitry. When VCC = 0 V, all inputs and outputs enter a high-impedance state with leakage limited to 0.6 µA maximum. This prevents current backflow into powered sections of the system-critical in multi-rail designs such as USB-C PD adapters or modular IoT nodes where rails power up/down asynchronously.

Can the SN74AUP1G79DSFR accept input signals higher than its supply voltage?

Yes, the SN74AUP1G79DSFR features over-voltage tolerant inputs rated to 4.6 V, allowing signals up to that level to be applied while VCC is as low as 0.8 V. This eliminates external level shifters when interfacing with 3.3-V or 5-V peripherals in mixed-supply systems-provided input current remains within ±20 mA and absolute maximum ratings are observed.

What is the significance of voltage-level clock triggering in the SN74AUP1G79DSFR?

Voltage-level clock triggering means the SN74AUP1G79DSFR samples the D input at a defined threshold voltage-not at a fixed time relative to edge slope. This decouples correct latching from clock rise time, enabling reliable operation with slow-switching sources like RC-filtered encoders or thermally induced timing variations, unlike edge-rate-dependent flip-flops.

How does the SN74AUP1G79DSFR reduce system-level power consumption beyond its low ICC spec?

Beyond its 0.9 µA max ICC, the SN74AUP1G79DSFR reduces system power through three mechanisms: (1) 1.5 pF input capacitance minimizes dynamic switching loss on driving GPIOs; (2) Ioff prevents cross-rail leakage during sleep modes; and (3) 3 pF typical Cpd cuts internal dynamic power-collectively enabling sub-µW average power in duty-cycled sensor nodes using the SN74AUP1G79DSFR as a wake-up latch.