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

onsemi MC74ACT08M

Name: MC74ACT08M
Brand: onsemi
SKU: MC74ACT08M
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MC74ACT08M

Manufacturer:: onsemi

Category:: Gates and Inverters

Package:: -

Datasheet:: MC74ACT08M.pdf

Description:: IC GATE AND

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Product details

Overview

MC74ACT08M from onsemi is a quad 2-input AND gate logic IC with TTL-compatible inputs, 24 mA output drive capability, propagation delay ≤10 ns at 5 V/50 pF, and operation over –40°C to +85°C ambient temperature. It performs basic Boolean conjunction in digital control, address decoding, and enable gating functions within industrial microcontroller peripheral interfaces.

For engineers reviewing the MC74ACT08M datasheet, pinout, applications, or equivalent options, this page delivers verified electrical specifications, EIAJ-14 package details, input/output voltage thresholds, AC timing behavior, and functionally comparable alternatives for logic-level compatibility validation and board-level replacement planning.

Technical Context

The MC74ACT08M implements four independent 2-input AND gates in a single monolithic CMOS device using advanced silicon-gate technology. Its TTL-compatible inputs accept VIH ≥ 2.0 V and VIL ≤ 0.8 V at VCC = 4.5–5.5 V, enabling direct interfacing with legacy 5 V TTL outputs without level-shifting circuitry.

Each gate provides rail-to-rail output swing with VOH ≥ 4.4 V (I_OH = –24 mA) and VOL ≤ 0.44 V (I_OL = 24 mA) under full-load conditions, supporting robust noise margins and fanout of up to 10 LS-TTL loads. Propagation delays are symmetric (t_PLH/t_PHL ≤ 10 ns max) across the operating temperature range.

Key Specifications

Parameter	Value and Actual Design Meaning
VCC Operating Range	4.5 V to 5.5 V - Ensures stable logic operation only within standard 5 V ±10% supply tolerance; not rated for 3.3 V systems.
Input Voltage Thresholds	VIH ≥ 2.0 V, VIL ≤ 0.8 V - Guarantees reliable recognition of TTL-high and TTL-low signals without external biasing.
Output Drive Strength	I_OH/I_OL = ±24 mA - Supports direct driving of multiple LS-TTL inputs or small LEDs without buffer stages.
Propagation Delay	t_PLH/t_PHL ≤ 10 ns @ 5 V/50 pF - Enables use in 50 MHz+ clocked control paths with predictable setup/hold timing.
Quiescent Supply Current	I_CC ≤ 40 µA - Maintains ultra-low static power consumption during idle states in battery-sensitive applications.
Input Capacitance	C_IN = 4.5 pF - Minimizes capacitive loading on upstream drivers, preserving signal edge integrity in high-speed buses.
Operating Temperature	–40°C to +85°C - Qualified for industrial-grade deployment in uncontrolled ambient environments.

Pinout & Package

EIAJ-14 plastic package (Case 965), 14-pin dual in-line outline with 2.54 mm lead pitch, 10.2 mm body width, and gull-wing leads compatible with standard through-hole PCB assembly.

Pin/Terminal	Circuit Role	Design Meaning
1, 2, 4, 5, 8, 9, 11, 12	Input A/B per gate	Eight total inputs assigned to four AND gates (e.g., Pin 1 & 2 = Gate 1 inputs; Pin 4 & 5 = Gate 2 inputs).
3, 6, 10, 13	Output Y per gate	Four independent gate outputs (e.g., Pin 3 = Gate 1 output; Pin 6 = Gate 2 output).
7	GND	Ground reference for all internal logic and I/O; must be connected to system 0 V plane with low-impedance path.
14	VCC	Positive supply terminal; requires local 0.1 µF ceramic decoupling capacitor placed within 5 mm of this pin.

Key Features

Feature	Design Value
TTL-compatible inputs	Accepts standard 5 V TTL logic levels directly-eliminates need for level translators when interfacing with legacy controllers.
24 mA output sink/source	Drives up to 10 LS-TTL loads or discrete indicators without external buffers-reduces component count in I/O expansion modules.
Low propagation delay	≤10 ns maximum ensures deterministic timing in synchronous state machines and address decode trees with tight cycle budgets.
Industrial temperature range	–40°C to +85°C operation supports deployment in factory automation, motor drives, and outdoor instrumentation enclosures.
Ultra-low quiescent current	≤40 µA ICC enables use in always-on supervisory circuits where standby power must remain below 200 µW.

Applications

Microcontroller Peripheral Enable Logic	Industrial Address Decoding
Use Scenario: Enabling/disabling SPI peripherals (e.g., ADCs, DACs) based on decoded chip-select signals from an MCU's address bus. IC Role / Device Role / Timing Role: Quad AND gate performing active-high enable gating for four independent peripheral blocks. Use Value: Reduces MCU GPIO usage by consolidating enable logic into one IC; propagation delay ≤10 ns avoids timing violations in 20 MHz bus cycles.	Use Scenario: Generating chip-select signals for memory-mapped I/O devices in PLC backplanes using upper address bits. IC Role / Device Role / Timing Role: Combining address lines and control strobes to generate precise decode windows for register banks. Use Value: Provides deterministic, glitch-free selection windows with guaranteed VIH/VIL margins against noisy industrial backplane voltages.
Legacy System Bus Interface	LED Status Indicator Control
Use Scenario: Interfacing modern microcontrollers with older TTL-based subsystems (e.g., parallel printer ports, ISA-style expansion). IC Role / Device Role / Timing Role: Level-adapting AND gate ensuring valid TTL logic interpretation of CMOS-driven control lines. Use Value: Eliminates need for discrete resistor networks or dedicated level shifters-TTL-compatible inputs accept 3.5 V+ highs directly.	Use Scenario: Driving multi-color status LEDs (red/green/yellow) from MCU GPIOs with current limiting integrated into logic outputs. IC Role / Device Role / Timing Role: Output-stage AND gate sourcing/sinking 24 mA to illuminate LEDs without external transistors. Use Value: Simplifies BOM by replacing discrete driver transistors; VOL ≤ 0.44 V ensures full LED brightness at 20 mA forward current.

Microcontroller Peripheral Enable Logic

Industrial Address Decoding

Use Scenario: Enabling/disabling SPI peripherals (e.g., ADCs, DACs) based on decoded chip-select signals from an MCU's address bus.

IC Role / Device Role / Timing Role: Quad AND gate performing active-high enable gating for four independent peripheral blocks.

Use Value: Reduces MCU GPIO usage by consolidating enable logic into one IC; propagation delay ≤10 ns avoids timing violations in 20 MHz bus cycles.

Use Scenario: Generating chip-select signals for memory-mapped I/O devices in PLC backplanes using upper address bits.

IC Role / Device Role / Timing Role: Combining address lines and control strobes to generate precise decode windows for register banks.

Use Value: Provides deterministic, glitch-free selection windows with guaranteed VIH/VIL margins against noisy industrial backplane voltages.

Legacy System Bus Interface

LED Status Indicator Control

Use Scenario: Interfacing modern microcontrollers with older TTL-based subsystems (e.g., parallel printer ports, ISA-style expansion).

IC Role / Device Role / Timing Role: Level-adapting AND gate ensuring valid TTL logic interpretation of CMOS-driven control lines.

Use Value: Eliminates need for discrete resistor networks or dedicated level shifters-TTL-compatible inputs accept 3.5 V+ highs directly.

Use Scenario: Driving multi-color status LEDs (red/green/yellow) from MCU GPIOs with current limiting integrated into logic outputs.

IC Role / Device Role / Timing Role: Output-stage AND gate sourcing/sinking 24 mA to illuminate LEDs without external transistors.

Use Value: Simplifies BOM by replacing discrete driver transistors; VOL ≤ 0.44 V ensures full LED brightness at 20 mA forward current.

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad 2-input AND gate applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74ACT08N	Identical logic function, TTL-compatible inputs, same 24 mA drive, but in PDIP-14 (Case 646) with wider 0.6-inch body vs. EIAJ-14's 0.4-inch width.	Compatible for through-hole prototyping or legacy socketed designs requiring standard DIP footprint.	Select when mechanical fit in existing DIP sockets or hand-soldered breadboard use is required.
74VHC08M	CMOS-only inputs (VIH = 70% VCC), lower ICC (≤2 µA), faster t_PD (≤7.5 ns), but not TTL-compatible-requires ≥3.5 V input for high at 5 V VCC.	Suitable for new 5 V CMOS-only systems prioritizing speed and ultra-low static power over TTL interoperability.	Choose only if upstream drivers guarantee ≥3.5 V logic-high levels; unsuitable for mixed TTL/CMOS buses.

Compared with SN74ACT08N, MC74ACT08M offers identical electrical behavior but in a narrower EIAJ-14 package for higher PCB density; versus 74VHC08M, it trades lower static power for guaranteed TTL-level compatibility-critical when interfacing with legacy 5 V TTL sources.

Availability

MC74ACT08M is available at Aetrix Electronics and suitable for industrial control panels, PLC I/O modules, and embedded instrumentation requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.

Supply support for MC74ACT08M 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 (formerly ON Semiconductor) is a global semiconductor supplier specializing in energy-efficient power management, analog, logic, and sensor solutions for automotive, industrial, and cloud infrastructure markets.

The MC74ACT08M belongs to the 74ACT logic family designed specifically for high-speed, TTL-compatible 5 V digital systems requiring robust noise immunity, low power, and industrial temperature resilience.

FAQ

What is the supply voltage range for the MC74ACT08M?

The MC74ACT08M operates strictly within a 4.5 V to 5.5 V DC supply range. It is not characterized or guaranteed for operation at 3.3 V or below. Applying VCC outside this window may cause functional failure or permanent damage, as confirmed by the Absolute Maximum Ratings table specifying –0.5 V to +7.0 V as destructive limits-not operational boundaries. Always regulate input to 5.0 V ±0.5 V for compliant MC74ACT08M operation.

Does the MC74ACT08M support TTL-level input signals?

Yes, the MC74ACT08M features TTL-compatible inputs with guaranteed VIH ≥ 2.0 V and VIL ≤ 0.8 V at VCC = 4.5–5.5 V. This allows direct connection to standard 5 V TTL outputs (e.g., 74LS series) without pull-up resistors or level shifters. The input threshold specification is explicitly defined in the 74ACT DC Characteristics table-not inferred-and applies across the full –40°C to +85°C operating range for MC74ACT08M.

What is the maximum output current per pin on the MC74ACT08M?

The MC74ACT08M delivers ±24 mA per output pin under steady-state DC conditions, as specified in the Recommended Operating Conditions table. This value is validated for both sourcing (IOH = –24 mA) and sinking (IOL = 24 mA) modes at VCC = 5.0 V and TA = +25°C, with guaranteed minimums maintained across –40°C to +85°C. Exceeding this limit risks output voltage degradation or thermal overstress in the MC74ACT08M.

Can the MC74ACT08M be used in place of the MC74AC08M?

No-the MC74ACT08M and MC74AC08M differ critically in input compatibility: MC74ACT08M has TTL-compatible inputs (VIH ≥ 2.0 V), while MC74AC08M requires CMOS-level inputs (VIH ≥ 3.15 V at 4.5 V). Swapping them may cause logic errors in systems driven by TTL sources. Both share identical pinout and package (EIAJ-14), but their input threshold specs are mutually exclusive per the respective DC Characteristics tables for MC74ACT08M and MC74AC08M.

What package type does the MC74ACT08M use?

The MC74ACT08M uses the EIAJ-14 plastic package (Case 965), a 14-pin gull-wing surface-mount variant with 2.54 mm lead pitch and 10.2 mm body width. Its dimensions, lead configuration, and marking layout are fully documented in Package Dimensions page 7 of the official datasheet. This package is distinct from SOIC-14 (D suffix), TSSOP-14 (DT suffix), or PDIP-14 (N suffix) variants of the same logic function.

MC74ACT08M Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: *

Package/Case:: -

Packaging:: Bulk

Product Status:: Active

Logic Type:: -

Number of Circuits:: -

Number of Inputs:: -

Features:: -

Voltage - Supply:: -

Current - Quiescent (Max):: -

Current - Output High, Low:: -

Input Logic Level - Low:: -

Input Logic Level - High:: -

Max Propagation Delay @ V, Max CL:: -

Operating Temperature:: -

Grade:: -

Qualification:: -

Mounting Type:: -

Supplier Device Package:: -

MC74ACT08M FAQ

1.How can I place an order for MC74ACT08M through Aetrix?

Please submit a Request for Quotation (RFQ) for MC74ACT08M 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 MC74ACT08M reliable?

The price and inventory of MC74ACT08M are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC74ACT08M is usually 5 days.

3.What payment methods are accepted for MC74ACT08M?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC74ACT08M transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MC74ACT08M?

MC74ACT08M orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MC74ACT08M 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 MC74ACT08M?

For technical support, including MC74ACT08M datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC74ACT08M requirements.

6.How does Aetrix verify that MC74ACT08M is sourced from the original manufacturer or authorized distributors?

All MC74ACT08M 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 MC74ACT08M meets industry standards.

7.What is the process for return or replacement of MC74ACT08M?

All MC74ACT08M units undergo pre-shipment inspection (PSI). If there is an issue with MC74ACT08M, 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 MC74ACT08M part is unused and in its original packaging.

Return procedure for MC74ACT08M:

1.Submit a request within 90 days.

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

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