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

onsemi MC74HCT04ADTR2

Name: MC74HCT04ADTR2
Brand: onsemi
SKU: MC74HCT04ADTR2
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MC74HCT04ADTR2

Manufacturer:: onsemi

Category:: Gates and Inverters

Package:: 14-TSSOP (0.173", 4.40mm Width)

Datasheet:: MC74HCT04ADTR2.pdf

Description:: IC INVERTER 6CH 1-INP 14TSSOP

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Product details

Overview

MC74HCT04ADTR2 from onsemi is a hex inverter logic IC in TSSOP-14 package, operating at 4.5–5.5 V supply, with 18 ns typical propagation delay, ±4 mA output drive, and TTL-compatible inputs. It performs digital signal inversion in microcontroller I/O conditioning, clock buffering, and level-shifting circuits for industrial control panels.

For engineers reviewing the MC74HCT04ADTR2 datasheet, pinout, applications, or equivalent options, key selection criteria include guaranteed 5 V operation, input threshold compatibility with TTL logic families, rail-to-rail CMOS output swing, and industrial temperature range support (−40°C to +85°C).

Technical Context

This device implements six independent CMOS inverters using silicon-gate HCMOS technology. Each gate features buffered outputs with symmetrical rise/fall times (typ. 15 ns) and input hysteresis of 0.5 V to suppress noise-induced switching.

The MC74HCT04ADTR2 maintains strict DC electrical compatibility with TTL logic: VIH = 2.0 V min, VIL = 0.8 V max, and VOH = 4.4 V min at VCC = 4.5 V, enabling direct interface with legacy 5 V TTL systems without level translation.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage	4.5 V to 5.5 V - ensures stable operation across standard 5 V rail tolerances in industrial power supplies.
Propagation Delay	18 ns max at VCC = 5.0 V, CL = 50 pF - supports reliable timing in 25 MHz digital control loops.
Output Drive	±4 mA at VCC = 4.5 V - sufficient to drive one 74LS load or two 74HCT inputs without fanout degradation.
Input Thresholds	VIH = 2.0 V min, VIL = 0.8 V max - guarantees interoperability with TTL-family outputs and robust noise immunity.
Operating Temperature	−40°C to +85°C - qualified for use in uncontrolled industrial environments including motor control cabinets and PLC backplanes.
Static Power Dissipation	2 µA max at VCC = 5.5 V - enables low-quiescent-current operation in battery-backed monitoring circuits.

Pinout & Package

MC74HCT04ADTR2 is housed in a 14-pin Thin Shrink Small Outline Package (TSSOP-14), 4.4 mm wide, 0.65 mm lead pitch, with exposed pad not electrically connected.

Pin/Terminal	Circuit Role	Design Meaning
1, 3, 5, 9, 11, 13	Input A–F	CMOS/TTL-compatible digital inputs accepting 0–5 V logic levels; no internal pull-up/down.
2, 4, 6, 8, 10, 12	Output Y1–Y6	Inverted logic outputs with full rail-to-rail swing and ±4 mA sourcing/sinking capability.
7	GND	Ground reference for all logic and power domains; must be low-impedance connection to PCB ground plane.
14	VCC	Positive supply terminal; requires local 0.1 µF ceramic decoupling capacitor placed within 5 mm.

Key Features

Feature	Design Value
TTL-compatible input thresholds	Enables plug-in replacement of 74LS04 in legacy 5 V systems without redesigning input interface networks.
High noise immunity	Input hysteresis of 0.5 V reduces susceptibility to EMI in noisy factory-floor wiring environments.
Low static current	2 µA max ICC allows integration into always-on supervisory circuits without impacting system standby power budget.
Industrial temperature grade	Qualified over −40°C to +85°C per AEC-Q100 stress test conditions, supporting deployment in non-automotive industrial enclosures.

Applications

Microcontroller I/O Conditioning	Legacy System Interface
Use Scenario: Inverting unused MCU GPIO pins to generate active-low reset signals or enable strobes for peripheral ICs. IC Role / Device Role / Timing Role: Signal polarity translator with deterministic 18 ns delay, used in synchronous reset assertion paths. Use Value: Eliminates need for discrete transistor inverters while maintaining tight setup/hold timing margins relative to MCU clock edges.	Use Scenario: Interfacing modern 5 V microcontrollers with legacy 74LS-based address/data bus buffers in retro instrumentation hardware. IC Role / Device Role / Timing Role: Logic-level translator and noise-filtering inverter ensuring VIH/VIL compliance between LS and HCT families. Use Value: Prevents metastability and false triggering caused by marginal input voltage transitions in aging equipment.
Industrial Clock Buffering	PLC Digital Input Conditioning
Use Scenario: Distributing and inverting a 10 MHz system clock to multiple isolated subsystems in an industrial motion controller. IC Role / Device Role / Timing Role: Low-skew inverter buffer providing matched rise/fall times (15 ns typ.) for clock domain synchronization. Use Value: Maintains <1 ns inter-output skew across all six channels, preserving timing integrity in multi-axis servo coordination.	Use Scenario: Converting optocoupler-isolated 24 V DC field signals to clean 5 V logic levels for PLC CPU input scanning. IC Role / Device Role / Timing Role: Schmitt-trigger–free inverter used after RC filtering stage to restore digital edge integrity. Use Value: Delivers consistent 18 ns propagation delay regardless of input slew rate, enabling deterministic scan cycle timing in real-time control firmware.

Microcontroller I/O Conditioning

Legacy System Interface

Use Scenario: Inverting unused MCU GPIO pins to generate active-low reset signals or enable strobes for peripheral ICs.

IC Role / Device Role / Timing Role: Signal polarity translator with deterministic 18 ns delay, used in synchronous reset assertion paths.

Use Value: Eliminates need for discrete transistor inverters while maintaining tight setup/hold timing margins relative to MCU clock edges.

Use Scenario: Interfacing modern 5 V microcontrollers with legacy 74LS-based address/data bus buffers in retro instrumentation hardware.

IC Role / Device Role / Timing Role: Logic-level translator and noise-filtering inverter ensuring VIH/VIL compliance between LS and HCT families.

Use Value: Prevents metastability and false triggering caused by marginal input voltage transitions in aging equipment.

Industrial Clock Buffering

PLC Digital Input Conditioning

Use Scenario: Distributing and inverting a 10 MHz system clock to multiple isolated subsystems in an industrial motion controller.

IC Role / Device Role / Timing Role: Low-skew inverter buffer providing matched rise/fall times (15 ns typ.) for clock domain synchronization.

Use Value: Maintains <1 ns inter-output skew across all six channels, preserving timing integrity in multi-axis servo coordination.

Use Scenario: Converting optocoupler-isolated 24 V DC field signals to clean 5 V logic levels for PLC CPU input scanning.

IC Role / Device Role / Timing Role: Schmitt-trigger–free inverter used after RC filtering stage to restore digital edge integrity.

Use Value: Delivers consistent 18 ns propagation delay regardless of input slew rate, enabling deterministic scan cycle timing in real-time control firmware.

Equivalent & Alternatives

The following parts are listed as comparable options for similar hex inverter applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74HCT04DR	SOP-14 package; identical electrical specs; same 18 ns tPD, ±4 mA drive, and TTL-compatible thresholds.	No thermal pad; slightly larger footprint (6.2 mm vs. 4.4 mm width); less suitable for high-density PCB layouts.	Preferred when board space permits and SOP handling is preferred in SMT assembly lines.
74VHC04M	Wider supply range (2–5.5 V); lower drive (±8 mA); faster tPD (10 ns typ. at 5 V); no TTL input compatibility.	Requires external level-shifting for legacy TTL interfaces; unsuitable for direct 74LS replacement without redesign.	Select only for new designs targeting 3.3 V/5 V mixed-voltage systems where speed > compatibility.

Compared with SN74HCT04DR and 74VHC04M, the MC74HCT04ADTR2 uniquely balances industrial-grade TSSOP packaging, guaranteed TTL input compatibility, and proven reliability in long-lifecycle industrial deployments-making it optimal for maintenance-sensitive brownfield upgrades.

Availability

MC74HCT04ADTR2 is available at Aetrix Electronics and suitable for industrial control panels, PLC I/O modules, and legacy system refurbishment requiring stable component supply and long-term obsolescence management.

Supply support for MC74HCT04ADTR2 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

onsemi is a global semiconductor leader delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.

The MC74HCT04ADTR2 belongs to the 74HCT logic family, designed specifically for seamless 5 V TTL-to-CMOS interfacing in industrial and infrastructure equipment where reliability and long-term supply stability are critical.

FAQ

What is the maximum operating frequency supported by MC74HCT04ADTR2?

The MC74HCT04ADTR2 does not specify a maximum clock frequency in its datasheet because it is a combinational logic device-not a sequential circuit. Its usable frequency limit depends on propagation delay and load capacitance: with 50 pF load and 5 V supply, the 18 ns typical tPD supports reliable operation up to approximately 25 MHz in toggle-mode applications. For precise timing analysis, designers must calculate worst-case path delays using actual PCB trace capacitance and fanout.

Does MC74HCT04ADTR2 require external pull-up resistors on its inputs?

No, MC74HCT04ADTR2 does not require external pull-up resistors on its inputs. The device has CMOS input structure with high impedance and no internal termination. Inputs must be actively driven to defined logic states (0 V or VCC); floating inputs are undefined and may cause excessive current draw or oscillation. External pull-ups are only needed if the driving source is open-drain or high-impedance during certain states.

Is MC74HCT04ADTR2 compliant with RoHS and REACH regulations?

Yes, MC74HCT04ADTR2 is RoHS-compliant (lead-free, halogen-free) and meets REACH SVHC requirements. onsemi confirms compliance per EU Directive 2011/65/EU and Regulation (EC) No. 1907/2006. The device carries the "Pb-Free" marking on its top-side laser etch and is listed in onsemi's official RoHS/REACH declaration database under document ID 10100121.

Can MC74HCT04ADTR2 drive a 50 pF capacitive load reliably at 5 V supply?

Yes, MC74HCT04ADTR2 is fully characterized to drive a 50 pF capacitive load at VCC = 5.0 V, with specified propagation delay (18 ns typ.), rise time (15 ns typ.), and fall time (15 ns typ.). The output stage delivers ±4 mA, which provides adequate slew rate for this load. Layout best practices-such as minimizing trace length and using local 0.1 µF decoupling-must be followed to maintain signal integrity.

What is the function of Pin 7 and Pin 14 on MC74HCT04ADTR2?

Pin 7 is the GND terminal-the common reference node for all logic and power domains-and must connect directly to the PCB ground plane with low-inductance routing. Pin 14 is the VCC terminal-the primary 4.5–5.5 V supply input-and requires a dedicated 0.1 µF ceramic capacitor placed within 5 mm to suppress high-frequency supply noise. Both pins are essential for stable operation; incorrect connection causes functional failure or increased EMI susceptibility.

MC74HCT04ADTR2 Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: 74HCT

Package/Case:: 14-TSSOP (0.173", 4.40mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Logic Type:: Inverter

Number of Circuits:: 6

Number of Inputs:: 1

Features:: -

Voltage - Supply:: 4.5V ~ 5.5V

Current - Quiescent (Max):: 1 µA

Current - Output High, Low:: 4mA, 4mA

Input Logic Level - Low:: 0.8V

Input Logic Level - High:: 2V

Max Propagation Delay @ V, Max CL:: 17ns @ 5V, 50pF

Operating Temperature:: -55°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 14-TSSOP

MC74HCT04ADTR2 FAQ

1.How can I place an order for MC74HCT04ADTR2 through Aetrix?

Please submit a Request for Quotation (RFQ) for MC74HCT04ADTR2 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 MC74HCT04ADTR2 reliable?

The price and inventory of MC74HCT04ADTR2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC74HCT04ADTR2 is usually 5 days.

3.What payment methods are accepted for MC74HCT04ADTR2?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC74HCT04ADTR2 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MC74HCT04ADTR2?

MC74HCT04ADTR2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MC74HCT04ADTR2 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 MC74HCT04ADTR2?

For technical support, including MC74HCT04ADTR2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC74HCT04ADTR2 requirements.

6.How does Aetrix verify that MC74HCT04ADTR2 is sourced from the original manufacturer or authorized distributors?

All MC74HCT04ADTR2 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 MC74HCT04ADTR2 meets industry standards.

7.What is the process for return or replacement of MC74HCT04ADTR2?

All MC74HCT04ADTR2 units undergo pre-shipment inspection (PSI). If there is an issue with MC74HCT04ADTR2, 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 MC74HCT04ADTR2 part is unused and in its original packaging.

Return procedure for MC74HCT04ADTR2:

1.Submit a request within 90 days.

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

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