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

Diodes Incorporated 74AHCT1G02SE-7

Name: 74AHCT1G02SE-7
Brand: Diodes Incorporated
SKU: 74AHCT1G02SE-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 74AHCT1G02SE-7

Manufacturer:: Diodes Incorporated

Category:: Gates and Inverters

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

Datasheet:: 74AHCT1G02SE-7.pdf

Description:: IC GATE NOR 1CH 2-INP SOT353

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Product details

Overview

74AHCT1G02SE-7 from Diodes Incorporated is a single 2-input positive NOR gate in SOT353 package, operating at 4.5V–5.5V supply, delivering ±8 mA output drive at 5.0V, with Schmitt-trigger inputs for noise-immune signal conditioning, and used in logic-level translation and discrete gate replacement in space-constrained consumer electronics.

For engineers reviewing the 74AHCT1G02SE-7 datasheet, 74AHCT1G02SE-7 pinout, 74AHCT1G02SE-7 application, or 74AHCT1G02SE-7 equivalent, key selection criteria include TTL-compatible input thresholds (V_IL = 0.8 V, V_VIH = 2.0 V), propagation delay ≤7.0 ns (CL = 15 pF, –40°C to +125°C), and SOT353 thermal resistance (θ_JA = 371°C/W).

Technical Context

This device implements standard positive-logic NOR functionality (Y = A̅·B̅) using CMOS technology with TTL-compatible input voltage thresholds and totem-pole output stage. It features Schmitt-trigger inputs to tolerate slow-rising/falling signals and suppress noise-induced switching.

Designed for 5 V-only operation, it meets JESD22 ESD standards (2 kV HBM, 1 kV CDM, 200 V MM) and JESD78 latch-up immunity (>100 mA). Its low ICC (max 40 μA at 5.5 V) and Ci (10 pF) support low-power, high-speed digital interfacing in mixed-signal systems.

Key Specifications

Parameter	Value and Actual Design Meaning
Logic Function	Single 2-input positive NOR gate (Y = A̅·B̅)
Supply Voltage	4.5 V to 5.5 V - ensures compatibility with legacy 5 V TTL and mixed-voltage I/O domains
Output Drive	±8 mA at VCC = 4.5 V - sufficient to drive 10 LS-TTL loads or interface directly with microcontroller GPIOs
Propagation Delay	≤7.0 ns at CL = 15 pF, –40°C to +125°C - enables reliable timing in sub-100 MHz combinatorial paths
Input Thresholds	VIL = 0.8 V, VIH = 2.0 V - matches standard TTL logic levels for seamless interoperability
Input Hysteresis	Schmitt-trigger action - provides ≥0.3 V hysteresis to reject noise on slow edges (e.g., mechanical switch debouncing)
ESD Rating	2 kV HBM, 1 kV CDM - exceeds industrial-grade robustness requirements per IEC 61000-4-2 system-level expectations

Pinout & Package

SOT353 (5-pin small outline transistor) package: ultra-compact surface-mount footprint (2.0 mm × 1.25 mm × 0.95 mm), lead-free and RoHS-compliant, optimized for high-density PCB layouts in portable devices.

Pin/Terminal	Circuit Role	Design Meaning
1 (A)	Data Input	Primary logic input with Schmitt-trigger threshold; must be tied to VCC or GND if unused
2 (B)	Data Input	Secondary logic input with identical Schmitt-trigger behavior; supports independent signal conditioning
3 (GND)	Ground Reference	Return path for all internal current sources/sinks; requires low-inductance connection to minimize ground bounce
4 (Y)	Data Output	Totem-pole CMOS output capable of sourcing/sinking ±8 mA; compatible with 5 V TTL and CMOS loads
5 (VCC)	Supply Voltage	Positive supply rail (4.5–5.5 V); requires local 100 nF ceramic decoupling within 3 mm of pin

Key Features

Feature	Design Value
Schmitt-trigger inputs	Enables reliable operation with slow or noisy signals (e.g., front-panel switches, sensor outputs) without external RC filtering
TTL-compatible thresholds	Guarantees interoperability with legacy 5 V microcontrollers, FPGAs, and peripheral ICs without level-shifting circuitry
Low dynamic power	Typical Cpd = 15 pF at 1 MHz - reduces switching current and system-level EMI in battery-powered applications
Robust ESD protection	Exceeds 2 kV HBM and 1 kV CDM - eliminates need for external TVS diodes in handheld and docking-station interfaces
SOT353 thermal performance	θJA = 371°C/W - supports continuous operation up to +125°C ambient when mounted per AP02001 pad layout

Applications

USB Peripheral Interface

Industrial Sensor Signal Conditioning

Use Scenario: Level-shifting and noise filtering for USB enumeration signals between 3.3 V host controller and 5 V legacy peripherals.

IC Role / Device Role / Timing Role: NOR gate configured as active-low enable buffer with hysteresis to clean up reset or attach-detect lines.

Use Value: Eliminates false triggers during hot-plug events by rejecting <100 ns noise spikes while maintaining <7 ns propagation delay.

Use Scenario: Debouncing mechanical limit switches and flow sensors in PLC I/O modules operating across –40°C to +85°C.

IC Role / Device Role / Timing Role: Discrete logic element converting slow, bouncing switch closures into clean digital pulses for microcontroller interrupt inputs.

Use Value: Schmitt-trigger inputs provide ≥0.3 V hysteresis, reducing firmware debounce overhead and enabling deterministic edge detection.

Consumer Audio Power Sequencing

Automotive Infotainment Display Enable

Use Scenario: Controlling power-on sequence of analog audio amplifiers and DACs in smart speakers to prevent pop/click artifacts.

IC Role / Device Role / Timing Role: NOR-based combinational logic generating synchronized enable signals from multiple system status flags.

Use Value: Sub-7 ns delay ensures tight timing correlation (<10 ns skew) between amplifier bias and DAC clock enable signals.

Use Scenario: Enabling LCD backlight drivers only after successful boot of head-unit MCU and display controller handshake.

IC Role / Device Role / Timing Role: Gate-level logic combining MCU-ready and panel-ready signals to generate safe, glitch-free enable pulse.

Use Value: TTL-compatible inputs interface directly with automotive-grade MCUs; ±8 mA drive supports direct control of enable pins on LED driver ICs.

Equivalent & Alternatives

The following parts are listed as comparable options for similar 2-input NOR gate applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74LVC1G02DBVR	Wider VCC range (1.65–5.5 V); lower drive (±24 mA @ 3.3 V); no Schmitt inputs	Better for multi-voltage systems; unsuitable where input noise immunity is required	Select when operating below 4.5 V or interfacing with 1.8/2.5/3.3 V logic families
74AHC1G02SE-7	Same SOT353 package; higher VCC max (6.0 V); no Schmitt inputs; lower ICC (1 μA typical)	Preferred for high-reliability 5 V systems requiring extended voltage margin and ultra-low static power	Select when Schmitt-triggering is unnecessary and supply tolerance >5.5 V is needed

Compared with SN74LVC1G02DBVR and 74AHC1G02SE-7, the 74AHCT1G02SE-7 uniquely combines TTL-compatible thresholds, Schmitt-trigger noise immunity, and guaranteed 5 V operation-making it optimal for legacy 5 V designs where signal integrity on marginal traces is critical.

Availability

74AHCT1G02SE-7 is available at Aetrix Electronics and suitable for USB peripheral design, industrial sensor interface, consumer audio sequencing, and automotive infotainment enable logic requiring stable component supply and long-term manufacturability.

Supply support for 74AHCT1G02SE-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, cost-optimized components for industrial, computing, and consumer markets.

The 74AHCT logic family targets 5 V TTL-compatible digital interfacing with enhanced noise immunity and robust ESD performance-designed specifically for legacy system upgrades and space-constrained board-level integration.

FAQ

Can 74AHCT1G02SE-7 operate at 3.3 V?

No. The 74AHCT1G02SE-7 is specified only for 4.5 V to 5.5 V operation per its Recommended Operating Conditions. At 3.3 V, input thresholds (V_IL/V_VIH) and output drive fall outside specification, risking logic misinterpretation and insufficient fanout. Use SN74LVC1G02DBVR for 3.3 V systems.

What is the purpose of Schmitt-trigger inputs in this NOR gate?

Schmitt-trigger inputs provide hysteresis (~0.3 V) between rising and falling thresholds, making the device tolerant to slow or noisy input edges. This eliminates false triggering from ringing, crosstalk, or mechanical switch bounce-critical in industrial I/O and front-panel interfaces without added RC filters.

Is the SOT353 package thermally adequate for continuous operation at 125°C ambient?

Yes, when mounted per Diodes' AP02001 recommended pad layout (2 oz copper, minimum thermal relief), the SOT353 achieves θ_JA = 371°C/W. With max P_D ≈ 1.5 mW (I_CC × V_CC), junction temperature rise is <0.6°C - well within the 150°C T_J limit even at 125°C ambient.

How does the 74AHCT1G02SE-7 differ from the 74AHCT1G02W5-7?

Both share identical electrical specifications and logic function, but differ in package: 74AHCT1G02SE-7 uses SOT353 (2.0 × 1.25 mm), while 74AHCT1G02W5-7 uses SOT25 (2.8 × 1.6 mm). SOT353 offers 30% smaller footprint and higher thermal resistance; SOT25 provides better heat dissipation (θ_JA = 204°C/W) and easier manual rework.

74AHCT1G02SE-7 Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: 74AHCT

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

Packaging:: Tape & Reel (TR)

Product Status:: Active

Logic Type:: NOR Gate

Number of Circuits:: 1

Number of Inputs:: 2

Features:: -

Voltage - Supply:: 4.5V ~ 5.5V

Current - Quiescent (Max):: 1 µA

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

Input Logic Level - Low:: 0.8V

Input Logic Level - High:: 2V

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

Operating Temperature:: -40°C ~ 125°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-353

74AHCT1G02SE-7 FAQ

1.How can I place an order for 74AHCT1G02SE-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for 74AHCT1G02SE-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 74AHCT1G02SE-7 reliable?

The price and inventory of 74AHCT1G02SE-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AHCT1G02SE-7 is usually 5 days.

3.What payment methods are accepted for 74AHCT1G02SE-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AHCT1G02SE-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 74AHCT1G02SE-7?

74AHCT1G02SE-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 74AHCT1G02SE-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 74AHCT1G02SE-7?

For technical support, including 74AHCT1G02SE-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AHCT1G02SE-7 requirements.

6.How does Aetrix verify that 74AHCT1G02SE-7 is sourced from the original manufacturer or authorized distributors?

All 74AHCT1G02SE-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 74AHCT1G02SE-7 meets industry standards.

7.What is the process for return or replacement of 74AHCT1G02SE-7?

All 74AHCT1G02SE-7 units undergo pre-shipment inspection (PSI). If there is an issue with 74AHCT1G02SE-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 74AHCT1G02SE-7 part is unused and in its original packaging.

Return procedure for 74AHCT1G02SE-7:

1.Submit a request within 90 days.

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

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