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

onsemi MC74ACT132M

Name: MC74ACT132M
Brand: onsemi
SKU: MC74ACT132M
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MC74ACT132M

Manufacturer:: onsemi

Category:: Gates and Inverters

Package:: -

Datasheet:: MC74ACT132M.pdf

Description:: IC GATE NAND

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Inventory:11,950

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Product details

Overview

MC74ACT132M from ON Semiconductor is a quad 2-input NAND Schmitt trigger IC designed for noise-immune signal conditioning in digital logic interfaces. It features TTL-compatible inputs, 24 mA output drive capability, input hysteresis of 1.2 V (min) at 4.5 V supply, and operates across −40°C to +85°C ambient temperature. It is commonly used in debouncing mechanical switches and cleaning up slow-rising clock or control signals in industrial control panels.

For engineers reviewing the MC74ACT132M datasheet, pinout, applications, or equivalent options, key selection criteria include Schmitt-trigger hysteresis width, TTL-level input compatibility, 5 V supply operation, and EIAJ-14 package footprint compatibility with legacy PCB layouts.

Technical Context

The MC74ACT132M implements four independent 2-input NAND gates, each with integrated Schmitt-trigger input circuitry that uses positive feedback to generate distinct upper (Vt⁺ = 2.0 V min at 4.5 V) and lower (Vt⁻ = 0.8 V max at 4.5 V) switching thresholds. This hysteresis eliminates chatter on slow or noisy inputs without external components.

It is part of the 74ACT logic family, ensuring TTL-compatible input thresholds (VIH = 2.0 V min, VIL = 0.8 V max) while delivering CMOS-level output swing and low ICC (≤40 μA). Propagation delays are specified at 2.5–13.0 ns (tPHL/tPLH, VCC = 5.0 V, CL = 50 pF), supporting reliable timing in 5 V digital systems.

Key Specifications

Parameter	Value and Actual Design Meaning
Logic Family	74ACT - TTL-compatible inputs with CMOS output drive and rail-to-rail swing
Supply Voltage Range	4.5 V to 5.5 V - Requires stable 5 V system rail; not functional below 4.5 V
Input Hysteresis (Vh)	Min 1.2 V at 4.5 V - Enables robust noise rejection (>600 mV margin) on slow edges
Output Drive	±24 mA - Sufficient to directly drive LEDs, small relays, or fan-out to ≥10 74ACT loads
Propagation Delay	2.5–13.0 ns (tPHL/tPLH, 5 V, 50 pF) - Supports >30 MHz toggle rates in clean load conditions
Operating Temperature	−40°C to +85°C - Qualified for industrial-grade embedded control and instrumentation
Input Leakage Current	±1.0 μA max - Negligible loading on high-impedance sources such as RC networks or sensors

Pinout & Package

EIAJ-14 (Case 965) surface-mount package with 300 mil body width, 1.27 mm pitch, and gull-wing leads - compatible with standard SOIC-14 reflow profiles but with distinct leadform geometry.

Pin/Terminal	Circuit Role	Design Meaning
1, 2, 4, 5, 8, 9, 12, 13	NAND Input A/B (per gate)	Dual inputs per gate; all four gates share identical Schmitt-trigger threshold behavior
3, 6, 10, 11	NAND Output Y (per gate)	Active-low open-drain–like outputs with full CMOS pull-up/pull-down strength
7	GND	Ground reference for all inputs, outputs, and internal biasing - must be low-impedance
14	VCC	Positive supply terminal - bypass capacitor (0.1 μF ceramic) required within 5 mm

Key Features

Feature	Design Value
Schmitt-trigger inputs	Enables reliable digitization of analog-like signals (e.g., thermistor-based thresholds, potentiometer wipers) without external hysteresis resistors
TTL-compatible inputs	Accepts standard 5 V TTL logic levels (VIH ≥ 2.0 V, VIL ≤ 0.8 V), allowing direct interfacing with legacy microcontrollers and bus drivers
24 mA output sink/source	Eliminates need for external buffer transistors when driving indicators, optocouplers, or small logic loads
Low quiescent current	ICC ≤ 40 μA ensures minimal power impact in always-on monitoring circuits (e.g., watchdog signal conditioning)
Industrial temperature range	Validated operation from −40°C to +85°C supports deployment in uncontrolled environments like factory floors or outdoor enclosures

Applications

Switch Debouncing	Signal Edge Sharpening
Use Scenario: Mechanical pushbutton or rotary encoder outputs exhibit contact bounce lasting 1–10 ms, causing false interrupts in microcontroller GPIOs. IC Role / Device Role / Timing Role: MC74ACT132M acts as a hardware debouncer - its hysteresis rejects sub-millisecond transients while passing clean, monotonic transitions to the MCU. Use Value: Reduces firmware complexity by eliminating software debounce loops; guarantees single-edge detection per actuation regardless of bounce profile.	Use Scenario: Slow-rising reset or enable signals from RC networks or supervisory ICs risk violating setup/hold times in synchronous logic. IC Role / Device Role / Timing Role: MC74ACT132M reshapes these signals into fast, jitter-free CMOS-compatible edges with controlled slew rate via internal Schmitt action. Use Value: Ensures deterministic timing alignment across clock domains and prevents metastability in flip-flops or state machines.
Level Translation Interface	Noise-Immune Sensor Interface
Use Scenario: Interfacing 3.3 V FPGA I/O to 5 V legacy peripherals where voltage level mismatch risks damage or undefined logic states. IC Role / Device Role / Timing Role: MC74ACT132M serves as a unidirectional level shifter - its TTL-compatible inputs accept 3.3 V VIH, while outputs swing rail-to-rail at 5 V. Use Value: Provides safe, passive translation without direction-control pins or external biasing, suitable for static control lines (e.g., chip select, write enable).	Use Scenario: Analog sensor outputs (e.g., LM35 temperature, photoresistor divider) drift near logic thresholds due to EMI or thermal drift. IC Role / Device Role / Timing Role: MC74ACT132M functions as a noise-hardened comparator - converting analog thresholds into clean digital flags using built-in hysteresis. Use Value: Prevents oscillatory output during threshold crossings, enabling stable alarm triggering or mode switching without software filtering.

Switch Debouncing

Signal Edge Sharpening

Use Scenario: Mechanical pushbutton or rotary encoder outputs exhibit contact bounce lasting 1–10 ms, causing false interrupts in microcontroller GPIOs.

IC Role / Device Role / Timing Role: MC74ACT132M acts as a hardware debouncer - its hysteresis rejects sub-millisecond transients while passing clean, monotonic transitions to the MCU.

Use Value: Reduces firmware complexity by eliminating software debounce loops; guarantees single-edge detection per actuation regardless of bounce profile.

Use Scenario: Slow-rising reset or enable signals from RC networks or supervisory ICs risk violating setup/hold times in synchronous logic.

IC Role / Device Role / Timing Role: MC74ACT132M reshapes these signals into fast, jitter-free CMOS-compatible edges with controlled slew rate via internal Schmitt action.

Use Value: Ensures deterministic timing alignment across clock domains and prevents metastability in flip-flops or state machines.

Level Translation Interface

Noise-Immune Sensor Interface

Use Scenario: Interfacing 3.3 V FPGA I/O to 5 V legacy peripherals where voltage level mismatch risks damage or undefined logic states.

IC Role / Device Role / Timing Role: MC74ACT132M serves as a unidirectional level shifter - its TTL-compatible inputs accept 3.3 V VIH, while outputs swing rail-to-rail at 5 V.

Use Value: Provides safe, passive translation without direction-control pins or external biasing, suitable for static control lines (e.g., chip select, write enable).

Use Scenario: Analog sensor outputs (e.g., LM35 temperature, photoresistor divider) drift near logic thresholds due to EMI or thermal drift.

IC Role / Device Role / Timing Role: MC74ACT132M functions as a noise-hardened comparator - converting analog thresholds into clean digital flags using built-in hysteresis.

Use Value: Prevents oscillatory output during threshold crossings, enabling stable alarm triggering or mode switching without software filtering.

Equivalent & Alternatives

The following parts are listed as comparable options for similar Schmitt-trigger NAND gate applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74ACT132D	SOIC-14 (Case 751A); identical electrical specs and pinout; same 4.5–5.5 V operation and 24 mA drive	Requires PCB layout change - different land pattern and lead form vs. EIAJ-14	Select when SOIC-14 is already standardized in production; no redesign needed for logic function
MC74HC132M	CMOS-input thresholds (VIH ≈ 3.5 V at 5 V); lower drive (±4 mA); wider VCC range (2–6 V)	Not TTL-compatible; unsuitable for direct interface with 5 V TTL outputs or legacy microcontrollers	Choose only if system uses pure CMOS signaling and requires lower power or multi-voltage flexibility

Compared with SN74ACT132D and MC74HC132M, the MC74ACT132M uniquely combines EIAJ-14 packaging with guaranteed TTL input compatibility and 24 mA drive - making it the only drop-in replacement for legacy Japanese industrial designs requiring that specific footprint and interface behavior.

Availability

MC74ACT132M is available at Aetrix Electronics and suitable for industrial control panels, sensor interface modules, and legacy equipment repair requiring stable component supply and long-term obsolescence management.

Supply support for MC74ACT132M 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

ON Semiconductor (now onsemi) is a global semiconductor supplier specializing in energy-efficient power management, analog, logic, and sensing solutions for automotive, industrial, and cloud infrastructure markets.

The MC74ACT132M belongs to the 74ACT advanced CMOS logic family, engineered for high-noise immunity and TTL interoperability in industrial automation and instrumentation systems where signal integrity and long-term reliability are critical.

FAQ

What is the minimum supply voltage required for reliable operation of the MC74ACT132M?

The MC74ACT132M is specified for operation only between 4.5 V and 5.5 V. Below 4.5 V, input thresholds and output drive fall outside guaranteed limits - for example, VOH drops below 3.76 V at 4.5 V with −24 mA load, and further reduction compromises TTL compatibility. The MC74ACT132M must be powered from a regulated 5 V rail meeting this window.

Can the MC74ACT132M be used with 3.3 V logic inputs?

No - the MC74ACT132M has TTL-compatible inputs requiring VIH ≥ 2.0 V and VIL ≤ 0.8 V, but its input thresholds are optimized for 5 V operation. A 3.3 V logic HIGH may not exceed the guaranteed VIH (2.0 V min), risking marginal or non-functional switching. For 3.3 V systems, use MC74HC132M or level-shifting buffers instead of relying on the MC74ACT132M.

Does the MC74ACT132M support mixed-voltage operation (e.g., 5 V VCC with 3.3 V inputs)?

No - the MC74ACT132M does not support mixed-voltage operation. Its inputs are referenced to VCC, and applying 3.3 V signals to a 5 V-powered MC74ACT132M violates the absolute maximum rating for VIN (0 to VCC). Inputs exceeding VCC or falling below GND risk latch-up or damage. Always ensure input voltages stay within 0 V to VCC for the MC74ACT132M.

What is the typical hysteresis voltage of the MC74ACT132M at 5.0 V supply?

At VCC = 5.0 V, the MC74ACT132M exhibits a minimum hysteresis (Vh) of 1.2 V, calculated as Vt⁺ − Vt⁻ = 3.2 V − 0.8 V (worst-case values). Typical hysteresis is 1.4 V, providing robust noise immunity against transients up to ±700 mV without false triggering - a key design value confirmed in the INPUT CHARACTERISTICS table of the datasheet for the MC74ACT132M.

Is the MC74ACT132M pin-compatible with the MC74AC132M?

Yes - the MC74ACT132M and MC74AC132M share identical pinout, package (EIAJ-14), and logic function. However, they differ electrically: MC74ACT132M has TTL-compatible inputs and operates only from 4.5–5.5 V, while MC74AC132M accepts 2.0–6.0 V and uses CMOS input thresholds. The MC74ACT132M cannot replace MC74AC132M in 3 V systems, but both fit the same footprint.

MC74ACT132M 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:: -

MC74ACT132M FAQ

1.How can I place an order for MC74ACT132M through Aetrix?

Please submit a Request for Quotation (RFQ) for MC74ACT132M 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 MC74ACT132M reliable?

The price and inventory of MC74ACT132M are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC74ACT132M is usually 5 days.

3.What payment methods are accepted for MC74ACT132M?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC74ACT132M transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MC74ACT132M?

MC74ACT132M orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MC74ACT132M 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 MC74ACT132M?

For technical support, including MC74ACT132M datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC74ACT132M requirements.

6.How does Aetrix verify that MC74ACT132M is sourced from the original manufacturer or authorized distributors?

All MC74ACT132M 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 MC74ACT132M meets industry standards.

7.What is the process for return or replacement of MC74ACT132M?

All MC74ACT132M units undergo pre-shipment inspection (PSI). If there is an issue with MC74ACT132M, 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 MC74ACT132M part is unused and in its original packaging.

Return procedure for MC74ACT132M:

1.Submit a request within 90 days.

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

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