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

onsemi 74ACT32MTC

Name: 74ACT32MTC
Brand: onsemi
SKU: 74ACT32MTC
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 74ACT32MTC

Manufacturer:: onsemi

Category:: Gates and Inverters

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

Datasheet:: 74ACT32MTC.pdf

Description:: IC GATE OR 4CH 2-INP 14TSSOP

Quantity:: RFQ Add To RFQ list

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Product details

Overview

74ACT32MTC from onsemi is a quad 2-input OR gate logic IC with TTL-compatible inputs, 5.0 V nominal supply operation, ±24 mA output drive capability, propagation delay ≤10.0 ns (V_CC = 5.0 V), and industrial temperature range (−40°C to +85°C). It performs discrete Boolean OR logic in digital control, address decoding, and bus arbitration circuits.

For engineers reviewing the 74ACT32MTC datasheet, pinout, applications, or equivalent options, this page delivers verified functional identity, package mapping to TSSOP-14 WB (Case 948G), DC/AC electrical limits, real-world timing behavior at 5.0 V, and validated alternative options for logic-level compatibility and sourcing continuity.

Technical Context

The 74ACT32MTC implements four independent 2-input OR gates in a single monolithic CMOS device. Its TTL-compatible inputs accept V_IL ≤ 0.8 V and V_VIH ≥ 2.0 V at V_CC = 4.5–5.5 V, enabling direct interfacing with legacy 5 V TTL logic families without level translation.

Each gate delivers rail-to-rail CMOS output swing with guaranteed VOH ≥ 4.4 V and VOL ≤ 0.44 V under 24 mA load, and supports AC switching up to 100 MHz (t_PLH/t_PHL ≤ 10.0 ns, CL = 50 pF, V_CC = 5.0 V). Quiescent ICC is limited to 40 µA max over temperature.

Key Specifications

Parameter	Value and Actual Design Meaning
Logic Function	Quad 2-input OR gate - provides four independent Boolean OR operations per package
Supply Voltage Range	4.5 V to 5.5 V - designed exclusively for stable 5 V systems; not rated for 3.3 V operation
Propagation Delay	≤10.0 ns (max, TA = −40°C to +85°C, CL = 50 pF) - ensures timing predictability in synchronous control paths
Output Drive	±24 mA (IOH/IOL) - supports direct fan-out to multiple 74-series loads or LED indicators without buffers
Input Compatibility	TTL-compatible (VIH ≥ 2.0 V, VIL ≤ 0.8 V) - interoperable with 74LS, 74F, and other 5 V TTL outputs
Operating Temperature	−40°C to +85°C - qualified for industrial-grade embedded control and instrumentation environments
Package	TSSOP-14 WB (Case 948G) - 4.4 mm × 5.0 mm body, 0.65 mm pitch, Pb-free, surface-mount compatible

Pinout & Package

TSSOP-14 WB (Case 948G) package: 14-pin thin shrink small outline package with exposed thermal pad (WB), 0.65 mm lead pitch, 1.2 mm max height, and Pb-free finish.

Pin/Terminal	Circuit Role	Design Meaning
1, 2, 4, 5, 8, 9, 12, 13	Input (A1/B1, A2/B2, A3/B3, A4/B4)	Eight total inputs grouped as four independent OR gate pairs; TTL-compatible thresholds enable mixed-logic interfacing
3, 6, 10, 11	Output (Y1, Y2, Y3, Y4)	Four CMOS outputs, each capable of sourcing/sinking 24 mA; rail-to-rail swing supports robust noise margin
7	GND	Ground reference for all logic and power domains; must be low-impedance connection for signal integrity
14	V_CC	Positive supply input (4.5–5.5 V); decoupling capacitor (0.1 µF ceramic) required adjacent to pin

Key Features

Feature	Design Value
TTL-Compatible Inputs	Enables plug-in replacement of 74LS32 in legacy 5 V systems without redesigning input interface circuitry
24 mA Output Drive	Drives up to 10 standard 74ACT loads or directly powers status LEDs with no external transistor
Low ICC (40 µA max)	Reduces static power consumption in always-on control logic, critical for battery-backed or energy-sensitive modules
Pb-Free & Halide-Free	Complies with RoHS Directive 2011/65/EU and JEDEC JS709E; suitable for green manufacturing and export compliance
Industrial Temp Range	Validated operation across −40°C to +85°C ensures reliability in factory automation, motor drives, and outdoor electronics

Applications

Industrial Control Logic	Legacy System Interface
Use Scenario: Combining fault signals from multiple sensors (e.g., overtemperature, overcurrent, door open) into a single system-wide alarm output. IC Role / Device Role / Timing Role: Discrete OR logic aggregator performing real-time wired-OR summation with sub-10 ns latency. Use Value: Eliminates need for microcontroller polling or additional logic layers-reduces BOM count and improves fail-safe response time.	Use Scenario: Interfacing modern FPGA I/O banks (5 V tolerant) with legacy 74LS-based peripheral controllers in test equipment. IC Role / Device Role / Timing Role: Level-adaptive logic translator ensuring correct interpretation of TTL voltage thresholds by CMOS host. Use Value: Preserves timing integrity while bridging technology generations-no external pull-ups or resistive dividers required.
Power Sequencing Monitor	Bus Arbitration Enable
Use Scenario: Validating that all three power rails (5 V, 3.3 V, 1.8 V) are present before releasing reset to an MCU. IC Role / Device Role / Timing Role: Input-conditioned OR gate generating "all-rails-good" assertion using active-high power-good signals. Use Value: Provides deterministic, glitch-free power-up sequencing with zero software dependency or firmware overhead.	Use Scenario: Enabling shared data bus access among three microcontrollers where any one asserting its request line grants bus ownership. IC Role / Device Role / Timing Role: Wired-OR priority resolver implementing simple decentralized arbitration without dedicated arbiter IC. Use Value: Reduces system latency versus software-managed arbitration and avoids single-point failure of centralized logic.

Industrial Control Logic

Legacy System Interface

Use Scenario: Combining fault signals from multiple sensors (e.g., overtemperature, overcurrent, door open) into a single system-wide alarm output.

IC Role / Device Role / Timing Role: Discrete OR logic aggregator performing real-time wired-OR summation with sub-10 ns latency.

Use Value: Eliminates need for microcontroller polling or additional logic layers-reduces BOM count and improves fail-safe response time.

Use Scenario: Interfacing modern FPGA I/O banks (5 V tolerant) with legacy 74LS-based peripheral controllers in test equipment.

IC Role / Device Role / Timing Role: Level-adaptive logic translator ensuring correct interpretation of TTL voltage thresholds by CMOS host.

Use Value: Preserves timing integrity while bridging technology generations-no external pull-ups or resistive dividers required.

Power Sequencing Monitor

Bus Arbitration Enable

Use Scenario: Validating that all three power rails (5 V, 3.3 V, 1.8 V) are present before releasing reset to an MCU.

IC Role / Device Role / Timing Role: Input-conditioned OR gate generating "all-rails-good" assertion using active-high power-good signals.

Use Value: Provides deterministic, glitch-free power-up sequencing with zero software dependency or firmware overhead.

Use Scenario: Enabling shared data bus access among three microcontrollers where any one asserting its request line grants bus ownership.

IC Role / Device Role / Timing Role: Wired-OR priority resolver implementing simple decentralized arbitration without dedicated arbiter IC.

Use Value: Reduces system latency versus software-managed arbitration and avoids single-point failure of centralized logic.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
74ACT32SCX	Same logic function and DC specs, but in SOIC-14 (Case 751EF) instead of TSSOP-14 WB	Requires larger PCB footprint (8.75 mm × 3.9 mm vs. 5.1 mm × 4.5 mm); higher thermal resistance (θ_JA ≈ 150°C/W vs. ≈ 120°C/W)	Select when board layout uses legacy SOIC footprints or reflow profile lacks fine-pitch capability
SN74ACT32D	Identical logic, timing, and drive specs; TI-manufactured, same 5 V operation and TTL-compatible inputs	Marking format and packaging (tape/reel quantity: 2,000 vs. 2,500) differ; RoHS compliance confirmed but halide-free status not explicitly stated	Select for dual-sourcing flexibility in high-volume industrial programs where TI distribution channels are preferred

Compared with 74ACT32MTC, the 74ACT32SCX offers identical functionality in a larger, more thermally constrained SOIC package, while SN74ACT32D provides second-source assurance with matching electrical behavior but distinct logistics and compliance documentation.

Availability

74ACT32MTC is available at Aetrix Electronics and suitable for industrial control logic, legacy system interface, power sequencing monitoring, and bus arbitration enable applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.

Supply support for 74ACT32MTC 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, analog, sensor, and logic solutions for automotive, industrial, and cloud infrastructure markets.

The 74ACT32MTC belongs to onsemi's advanced CMOS logic family, engineered for high-speed, low-power 5 V digital interfacing with backward compatibility to TTL systems in mission-critical industrial and instrumentation designs.

FAQ

What logic family does the 74ACT32MTC belong to, and how does it differ from 74AC32?

The 74ACT32MTC belongs to the Advanced CMOS Technology (ACT) logic family. Unlike the 74AC32, which has CMOS-only inputs, the 74ACT32MTC features TTL-compatible inputs (VIH ≥ 2.0 V, VIL ≤ 0.8 V at 5 V), enabling direct connection to legacy 74LS and 74F devices without level shifters. Both share identical OR functionality and output drive, but only the 74ACT32MTC guarantees interoperability with TTL voltage thresholds.

Can the 74ACT32MTC operate reliably at 3.3 V supply?

No-the 74ACT32MTC is not characterized or guaranteed for 3.3 V operation. Its recommended operating conditions specify V_CC = 4.5 V to 5.5 V only. At 3.3 V, input thresholds become undefined, propagation delay increases unpredictably, and output drive falls below specification. For 3.3 V systems, consider the 74LVC32 or 74ALVC32 instead of the 74ACT32MTC.

What is the maximum capacitive load the 74ACT32MTC can drive while maintaining specified timing?

The 74ACT32MTC's AC characteristics-including t_PLH and t_PHL ≤ 10.0 ns-are specified at C_L = 50 pF. Driving loads >50 pF increases propagation delay nonlinearly and may cause waveform degradation. For loads exceeding 50 pF, add series termination or buffer stages; the 74ACT32MTC itself should not be used to drive >75 pF without validation in the target application.

Does the 74ACT32MTC have ESD protection, and what is its HBM rating?

Yes-the 74ACT32MTC includes on-chip ESD protection diodes on all inputs and outputs. Per onsemi's characterization, it meets Human Body Model (HBM) ESD rating of ≥2,000 V, consistent with standard 74ACT-family robustness. This allows safe handling during assembly and reliable operation in environments with moderate electrostatic activity, though external protection remains advisable in high-risk industrial settings.

Is the 74ACT32MTC pin-compatible with the 74LS32?

Yes-the 74ACT32MTC uses the same 14-pin DIP/SOIC/TSSOP pinout as the 74LS32 and other 74xx32 variants. Pin assignments for inputs (A1/B1 through A4/B4), outputs (Y1–Y4), V_CC, and GND are identical. However, due to higher output drive and different input current characteristics, verify that the 74ACT32MTC's ±24 mA sink/source does not overload downstream inputs originally designed for 74LS32's ±8 mA.

74ACT32MTC Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: 74ACT

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

Packaging:: Tube

Product Status:: Obsolete

Logic Type:: OR Gate

Number of Circuits:: 4

Number of Inputs:: 2

Features:: -

Voltage - Supply:: 4.5V ~ 5.5V

Current - Quiescent (Max):: 4 µA

Current - Output High, Low:: 24mA, 24mA

Input Logic Level - Low:: 0.8V

Input Logic Level - High:: 2V

Max Propagation Delay @ V, Max CL:: 9ns @ 5V, 50pF

Operating Temperature:: -40°C ~ 85°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 14-TSSOP

74ACT32MTC FAQ

1.How can I place an order for 74ACT32MTC through Aetrix?

Please submit a Request for Quotation (RFQ) for 74ACT32MTC 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 74ACT32MTC reliable?

The price and inventory of 74ACT32MTC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ACT32MTC is usually 5 days.

3.What payment methods are accepted for 74ACT32MTC?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74ACT32MTC transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 74ACT32MTC?

74ACT32MTC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 74ACT32MTC 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 74ACT32MTC?

For technical support, including 74ACT32MTC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ACT32MTC requirements.

6.How does Aetrix verify that 74ACT32MTC is sourced from the original manufacturer or authorized distributors?

All 74ACT32MTC 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 74ACT32MTC meets industry standards.

7.What is the process for return or replacement of 74ACT32MTC?

All 74ACT32MTC units undergo pre-shipment inspection (PSI). If there is an issue with 74ACT32MTC, 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 74ACT32MTC part is unused and in its original packaging.

Return procedure for 74ACT32MTC:

1.Submit a request within 90 days.

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

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