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Home > Products > Integrated Circuits (ICs) > Logic > Gates and Inverters

Diodes Incorporated 74AHC1G09QSE-7

Name: 74AHC1G09QSE-7
Brand: Diodes Incorporated
SKU: 74AHC1G09QSE-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 74AHC1G09QSE-7

Manufacturer:: Diodes Incorporated

Category:: Gates and Inverters

Package:: 5-TSSOP, SC-70-5, SOT-353

Datasheet:: 74AHC1G09QSE-7.pdf

Description:: IC GATE AND 1CH 2-INP SOT353

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Product details

Overview

74AHC1G09QSE-7 from Diodes Incorporated is an automotive-grade, single 2-input positive AND gate with open-drain output, operating from 2.0V to 5.5V supply, delivering 8mA sink current at V_CC = 4.5V, featuring Schmitt-trigger inputs for noise immunity, and qualified per AEC-Q100 Grade 1 (–40°C to +125°C) for engine control and body electronics.

For engineers reviewing the 74AHC1G09QSE-7 datasheet, 74AHC1G09QSE-7 pinout, 74AHC1G09QSE-7 application, or 74AHC1G09QSE-7 equivalent, this page delivers verified package mapping (SOT353), logic function truth table, open-drain interface constraints, temperature-rated performance data, and automotive qualification evidence - all critical for robust digital interface design in harsh environments.

Technical Context

This device implements a single Boolean AND function (Y = A • B) using CMOS technology with open-drain output architecture, requiring an external pull-up resistor to achieve high-level output states. Its Schmitt-trigger inputs accept slow-rising/falling signals across full V_CC range (2.0V–5.5V), independent of supply voltage.

Designed for automotive signal conditioning and level translation, it supports mixed-voltage interfacing between 3.3V and 5V domains while maintaining latch-up immunity (>100mA) and ESD robustness (2kV HBM, 1kV CDM), all within a thermally optimized SOT353 package (θ_JA = 385°C/W).

Key Specifications

Parameter	Value and Actual Design Meaning
Logic Function	Single 2-input positive AND gate with open-drain output - requires external pull-up for HIGH state; enables wired-AND bus sharing and voltage-level translation.
Supply Voltage Range	2.0V to 5.5V - supports interoperability across 3.3V and 5V systems without level shifters.
Output Sink Current	8mA at V_CC = 4.5V - sufficient to drive LEDs, MOSFET gates, or standard TTL loads directly.
Propagation Delay	Typ. 3.5ns at V_CC = 5V, CL = 15pF - enables reliable timing in sub-100MHz digital control paths.
Operating Temperature	–40°C to +125°C (Grade 1) - validated for under-hood automotive applications including powertrain and chassis modules.
Input Thresholds	Schmitt-trigger inputs with hysteresis - tolerate slow edges and noise up to 300mV, eliminating need for external RC filtering.
ESD Protection	2000V HBM, 1000V CDM per AEC-Q100 - ensures reliability during board assembly and field operation in industrial settings.

Pinout & Package

SOT353 (5-pin, 2.15mm × 2.1mm × 1.1mm, 0.65mm pitch) - ultra-compact surface-mount package with exposed pad not present; moisture sensitivity level 1 per J-STD-020.

Pin/Terminal	Circuit Role	Design Meaning
1 (A)	Data Input	First logic input; Schmitt-triggered, voltage-tolerant (–0.5V to 6.5V), accepts slow edges.
2 (B)	Data Input	Second logic input; identical electrical behavior to Pin 1; both inputs fully rail-to-rail capable.
3 (GND)	Ground Reference	Return path for supply and output current; must be low-impedance to maintain noise margin and thermal stability.
4 (Y)	Open-Drain Output	Active-low sinking node only; requires external pull-up to define HIGH voltage level and rise time.
5 (V_CC)	Power Supply	CMOS supply rail; decoupling capacitor (100nF) recommended within 5mm of pin for transient suppression.

Key Features

Feature	Design Value
Schmitt-trigger inputs	Enables reliable operation with noisy or slow-rising signals (e.g., mechanical switch debouncing or sensor outputs) without external hysteresis circuitry.
Open-drain output architecture	Supports wired-AND bus configurations, I²C-compatible signaling, and mixed-voltage level translation (e.g., 3.3V logic driving 5V bus).
AEC-Q100 Grade 1 qualification	Validated for continuous operation from –40°C to +125°C ambient, meeting automotive powertrain and ADAS subsystem reliability requirements.
CMOS low-power consumption	Typ. 1μA ICC at V_CC = 5.5V and TA = +25°C - reduces system standby current in battery-powered modules.
Input voltage independence from V_CC	Inputs operate correctly even when VI exceeds V_CC (up to 6.5V), simplifying interface to higher-voltage sensors or legacy peripherals.

Applications

Engine Control Unit (ECU) Signal Conditioning

Automotive Body Control Module (BCM)

Use Scenario: Combining two fault signals (e.g., overtemperature and overcurrent) before triggering a shutdown sequence in real-time power management.

IC Role / Device Role / Timing Role: Single-point logic gating with deterministic propagation delay (<7.0ns max at 125°C) and fail-safe open-drain output tied to microcontroller interrupt line.

Use Value: Eliminates need for discrete diode-OR or additional MCU GPIO pins while maintaining AEC-Q100 compliance and thermal robustness.

Use Scenario: Enabling multiplexed LED status indicators driven by multiple microcontrollers sharing a common 5V bus.

IC Role / Device Role / Timing Role: Open-drain AND gate acting as bus arbitration node - only lights LED when both controllers assert valid enable signals.

Use Value: Reduces PCB footprint vs. dual-MOSFET solution and avoids shoot-through risk inherent in push-pull drivers.

Industrial Sensor Interface Hub

Automotive Infotainment Power Sequencing

Use Scenario: Validating dual redundant sensor readings (e.g., pressure + temperature) before enabling actuator control in safety-critical machinery.

IC Role / Device Role / Timing Role: Logic validation gate with Schmitt-trigger inputs tolerating slow analog-to-digital conversion edges and EMI-induced transients.

Use Value: Provides deterministic, low-latency decision point without software overhead or FPGA resource usage.

Use Scenario: Coordinating power-on sequencing of display backlight and audio amplifier ICs based on MCU readiness and thermal status flags.

IC Role / Device Role / Timing Role: Timing-sensitive enable combiner ensuring both subsystems activate only after all prerequisites are met.

Use Value: Prevents inrush current conflicts and ensures stable power rail ramp-up, reducing risk of brownout resets.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74LVC1G09DBVR	Lower V_CC range (1.65V–5.5V); no Schmitt-trigger inputs; 32mA sink at 3.3V.	Not AEC-Q100 qualified; rated only to +85°C ambient - unsuitable for under-hood use.	Select only for commercial-grade, high-sink-current applications where input edge rate is controlled and temperature stress is minimal.
74AUP1G09GW,125	Ultra-low power (I_CC < 0.1μA typical); V_CC = 0.8V–3.6V; no Schmitt triggers; 4mA sink at 3.3V.	Not automotive-qualified; limited to portable electronics and battery-constrained IoT nodes.	Prefer for energy-sensitive designs where supply voltage is ≤3.3V and environmental stress is low.

Compared with SN74LVC1G09DBVR and 74AUP1G09GW,125, the 74AHC1G09QSE-7 uniquely combines AEC-Q100 Grade 1 qualification, Schmitt-trigger noise immunity, and 2.0V–5.5V operation - making it the only choice for automotive signal integrity-critical AND gating where ambient extremes and uncontrolled input slew rates coexist.

Availability

74AHC1G09QSE-7 is available at Aetrix Electronics and suitable for automotive powertrain control, industrial sensor fusion, and infotainment subsystems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74AHC1G09QSE-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 components for automotive, industrial, and computing markets, with ISO/TS 16949 and IATF 16949 certified manufacturing.

This device belongs to Diodes' AHC logic family - engineered for automotive signal integrity, emphasizing wide V_CC range, robust ESD/latch-up performance, and guaranteed operation across –40°C to +125°C ambient conditions.

FAQ

What is the purpose of the open-drain output in the 74AHC1G09QSE-7?

The open-drain output allows wired-AND bus configurations and voltage-level translation without internal pull-up. It sinks current only - a discrete external resistor pulls Y high. This enables shared-bus signaling (e.g., I²C-style arbitration), mixed-voltage interfacing, and safe connection to higher-voltage rails, provided the pull-up voltage does not exceed 6.5V.

Can unused inputs be left floating?

No. Unused inputs must be tied to V_CC or GND to prevent undefined logic states, increased power consumption, and potential oscillation. The datasheet explicitly mandates this in Recommended Operating Conditions (Note 7). Floating inputs may cause excessive ICC due to partial conduction in CMOS input stages.

Does the 74AHC1G09QSE-7 support hot-swap or live-insertion?

No. While the device features robust ESD protection (2kV HBM), it lacks explicit hot-swap circuitry such as slew-rate limiting or current limiting on V_CC/I/O pins. Insertion into a powered backplane risks voltage overshoot, ground bounce, or latch-up if supply sequencing is uncontrolled - use only in cold-plug or properly sequenced systems.

How does the Schmitt-trigger input improve noise immunity?

Schmitt-trigger inputs provide hysteresis (~300mV typical), meaning the threshold for rising edges (V_IH) is higher than for falling edges (V_IL). This prevents multiple toggles caused by slow or noisy transitions - especially beneficial for mechanical switches, thermistor-based sensors, or long PCB traces where ringing or EMI is present.

74AHC1G09QSE-7 Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: 74AHC

Package/Case:: 5-TSSOP, SC-70-5, SOT-353

Packaging:: Tape & Reel (TR)

Product Status:: Active

Logic Type:: AND Gate

Number of Circuits:: 1

Number of Inputs:: 2

Features:: -

Voltage - Supply:: 2V ~ 5.5V

Current - Quiescent (Max):: 1 µA

Current - Output High, Low:: -8mA, 8mA

Input Logic Level - Low:: 0.5V ~ 1.65V

Input Logic Level - High:: 1.5V ~ 3.85V

Max Propagation Delay @ V, Max CL:: 7.5ns @ 5V, 50pF

Operating Temperature:: -40°C ~ 125°C

Grade:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-353

74AHC1G09QSE-7 FAQ

1.How can I place an order for 74AHC1G09QSE-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for 74AHC1G09QSE-7 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for 74AHC1G09QSE-7 reliable?

The price and inventory of 74AHC1G09QSE-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AHC1G09QSE-7 is usually 5 days.

3.What payment methods are accepted for 74AHC1G09QSE-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AHC1G09QSE-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 74AHC1G09QSE-7?

74AHC1G09QSE-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 74AHC1G09QSE-7 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for 74AHC1G09QSE-7?

For technical support, including 74AHC1G09QSE-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AHC1G09QSE-7 requirements.

6.How does Aetrix verify that 74AHC1G09QSE-7 is sourced from the original manufacturer or authorized distributors?

All 74AHC1G09QSE-7 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 74AHC1G09QSE-7 meets industry standards.

7.What is the process for return or replacement of 74AHC1G09QSE-7?

All 74AHC1G09QSE-7 units undergo pre-shipment inspection (PSI). If there is an issue with 74AHC1G09QSE-7, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The 74AHC1G09QSE-7 part is unused and in its original packaging.

Return procedure for 74AHC1G09QSE-7:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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