Diodes Incorporated 74AUP1G09FX4-7

Overview

74AUP1G09FX4-7 from Diodes Incorporated is a single 2-input positive AND gate with open-drain output, designed for ultra-low-power portable systems operating from 0.8 V to 3.6 V. It features IOFF partial power-down protection, Schmitt-trigger inputs (250 mV hysteresis at 3.0 V), and delivers 4 mA output drive at 3.0 V - enabling direct interface with I²C, SMBus, and level-shifting applications in battery-powered wearables and IoT edge nodes.

For engineers reviewing the 74AUP1G09FX4-7 datasheet, 74AUP1G09FX4-7 pinout, 74AUP1G09FX4-7 application, or 74AUP1G09FX4-7 equivalent, key selection criteria include its 0.8–3.6 V supply range, open-drain topology for wired-AND bus implementation, IOFF-enabled power sequencing, sub-1 µA static current, and verified operation across –40°C to +125°C ambient.

Technical Context

This device implements a Boolean AND function (Y = A • B) with open-drain output, requiring an external pull-up resistor to define high-level logic voltage. Its Schmitt-trigger inputs tolerate slow-rising signals and reject noise, with hysteresis of 250 mV at VCC = 3.0 V and input thresholds scaling with supply voltage (VIH = 0.8×VCC min at 0.8–1.65 V).

The IOFF circuit actively disables output leakage when VCC = 0 V, preventing backflow current during partial power-down - critical for multi-rail systems where peripherals power down before controllers. Propagation delay ranges from 0.9 ns (typ, 3.3 V, CL = 5 pF) to 2.3 ns (typ, 3.3 V, CL = 30 pF), supporting low-speed digital control and bus arbitration timing.

Key Specifications

Pinout & Package

X2-DFN1409-6 package: 1.4 mm × 0.9 mm × 0.4 mm body, 0.5 mm pad pitch, no leads, bottom thermal pad (non-electrical), moisture sensitivity level 1.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 2-input AND gate with open-drain output applications.

Compared with SN74LVC1G09DPWR, the 74AUP1G09FX4-7 offers superior low-voltage operation, lower static power, and built-in IOFF - making it optimal for battery-critical and multi-rail embedded systems. Against 74AUP2G09DCU3-7, it provides gate-level flexibility and lower unit cost where only one AND function is needed.

Availability

74AUP1G09FX4-7 is available at Aetrix Electronics and suitable for wearable electronics, IoT sensor nodes, and industrial HMI panels requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for 74AUP1G09FX4-7 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 manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability, low-power solutions for consumer, industrial, and automotive markets.

The 74AUP logic family targets ultra-low-power portable electronics, emphasizing extended battery life, wide supply range, and robustness in partial-power-down scenarios - directly addressing design constraints in wearables and energy-harvesting systems.

FAQ

What is the maximum recommended pull-up resistor value for the open-drain Y output?

The maximum pull-up resistor depends on VCC, load capacitance, and required rise time. At 3.3 V with 10 pF bus capacitance and 100 ns max rise time, RPU ≤ 10 kΩ ensures full logic high within specification. For slower buses like I²C Standard Mode (100 kHz), 4.7 kΩ is typical; for Fast Mode (400 kHz), ≤ 2.2 kΩ is recommended to meet t_r ≤ 300 ns.

Can 74AUP1G09FX4-7 operate with VCC = 0 V while inputs are driven?

Yes - the IOFF feature actively disables the output FET when VCC = 0 V, limiting input-to-output leakage to ±0.2 µA (max) over temperature. This prevents back-current from powered inputs into a dead rail, satisfying JEDEC JESD78 latch-up immunity requirements and enabling safe hot-plug operation in multi-supply systems.

Is the NC pin (Pin 6) required to be grounded?

No - Pin 6 is internally unconnected and must remain floating per Diodes Incorporated layout guidance. Tying it to GND may cause unintended parasitic coupling or violate thermal pad clearance rules. The datasheet specifies "no internal connection" and recommends leaving it unconnected in PCB layout.

Does the Schmitt-trigger input behavior change with supply voltage?

Yes - hysteresis magnitude scales with VCC: it is typically 250 mV at 3.0 V, but decreases proportionally at lower voltages (e.g., ~150 mV at 1.8 V). Input threshold voltages (VIH/VIL) also track VCC per defined ratios (e.g., VIH = 0.8×VCC min for 0.8–1.65 V range), ensuring consistent noise margin across the full 0.8–3.6 V operating window.