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onsemi MC74ACT14ML1
- Part No.:
- MC74ACT14ML1
- Manufacturer:
- onsemi
- Category:
- Gates and Inverters
- Package:
- -
- Datasheet:
-
MC74ACT14ML1.pdf
- Description:
- IC INVERTER
- Quantity:
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Inventory:8,000
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Product details
Overview
MC74ACT14ML1 from onsemi is a hex Schmitt-trigger inverter IC with TTL-compatible inputs, 5 V supply operation, 11.5 ns max propagation delay (tPLH/tPHL), ±24 mA output drive, and 1.2 V typical hysteresis. It conditions slow or noisy digital signals in clock conditioning, waveform shaping, and noise-immune interface circuits.
For engineers reviewing the MC74ACT14ML1 datasheet, pinout, applications, or equivalent options, key selection criteria include TTL-level input compatibility, guaranteed hysteresis for noise rejection, rail-to-rail CMOS output swing, industrial temperature range (–40°C to +85°C), and SOIC-14 (M suffix) package compatibility with legacy board layouts.
Technical Context
The MC74ACT14ML1 implements six independent Schmitt-trigger inverters with internally set hysteresis (Vt+ ≈ 2.0 V, Vt– ≈ 0.8 V at VCC = 5.0 V), enabling clean signal regeneration from slow-rising or noisy inputs. Its TTL-compatible input thresholds (VIH = 2.0 V min, VIL = 0.8 V max) allow direct interfacing with 5 V TTL logic families.
Each inverter provides symmetrical output drive (IOH = –24 mA, IOL = 24 mA at VCC = 5.0 V) into 50 pF loads, with propagation delays specified from 1.0 ns (min) to 12.5 ns (max) across temperature and voltage. Quiescent ICC remains ≤40 µA, supporting low-static-power system design.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - ensures compatibility with standard 5 V TTL/CMOS systems and rejects supply ripple up to ±0.5 V. |
| Input Threshold Hysteresis | Min 0.4 V, typ 1.2 V - enables reliable noise margin >600 mV against EMI in industrial environments. |
| Propagation Delay | Max 12.5 ns at VCC = 5.0 V, CL = 50 pF - supports signal conditioning up to ~40 MHz edge rates. |
| Output Drive | ±24 mA per inverter - directly drives multiple 74-series TTL inputs or LED indicators without buffering. |
| Operating Temperature | –40°C to +85°C - qualified for industrial control, automotive body electronics, and outdoor embedded systems. |
| Input Leakage | ±1.0 µA max - minimizes loading on high-impedance sensor or oscillator outputs. |
Pinout & Package
EIAJ-14 (SOIC-14) package, case 965, 14-pin surface-mount with standard 1.27 mm pitch; JEDEC-compliant footprint compatible with MC74AC14M and other industry-standard SOIC-14 logic devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 5, 9, 11, 13 | Input (A1–A6) | Accepts TTL-level signals (VIH ≥ 2.0 V, VIL ≤ 0.8 V); each has Schmitt-trigger hysteresis. |
| 2, 4, 6, 10, 12, 14 | Output (Y1–Y6) | CMOS-compatible outputs swing rail-to-rail (VOH ≥ 4.4 V, VOL ≤ 0.44 V at 24 mA). |
| 7 | GND | Ground reference for all inputs, outputs, and internal circuitry; requires low-inductance PCB connection. |
| 14 | VCC | Positive supply (4.5–5.5 V); decoupling capacitor (0.1 µF) required adjacent to pin. |
Key Features
| Feature | Design Value |
|---|---|
| TTL-Compatible Inputs | Guaranteed VIH = 2.0 V min and VIL = 0.8 V max enable direct connection to 74LS, 74F, and microcontroller GPIOs without level shifters. |
| Schmitt-Trigger Hysteresis | Internally trimmed 1.2 V typical hysteresis eliminates contact bounce, switch noise, and slow-edge metastability in sensor interfaces. |
| Rail-to-Rail CMOS Outputs | VOH ≥ 4.4 V and VOL ≤ 0.44 V at full load ensure robust logic levels across temperature and supply variation. |
| Low Power Consumption | ICC ≤ 40 µA at VCC = 5.5 V allows use in always-on monitoring nodes without thermal derating. |
Applications
| Industrial Sensor Interface | Microcontroller Input Conditioning |
|---|---|
Use Scenario: Debouncing mechanical limit switches and photo-interrupters in PLC I/O modules. IC Role / Device Role / Timing Role: Signal conditioner converting slow, noisy switch transitions into clean, jitter-free logic edges. Use Value: Eliminates need for external RC filters or firmware debouncing, reducing BOM count and interrupt latency. | Use Scenario: Cleaning analog comparator outputs or encoder quadrature signals before MCU capture pins. IC Role / Device Role / Timing Role: Edge-shaping buffer ensuring monotonic, glitch-free transitions for reliable timer/counter input sampling. Use Value: Prevents false edge detection and missed counts under EMI or long trace conditions. |
| Legacy TTL System Upgrade | Waveform Generation & Shaping |
Use Scenario: Replacing obsolete 74LS14 in 5 V backplane systems requiring higher noise immunity and drive strength. IC Role / Device Role / Timing Role: Drop-in functional upgrade delivering TTL input compatibility with modern CMOS output performance. Use Value: Enables extended product lifecycle without PCB redesign or firmware changes. | Use Scenario: Converting sine-wave oscillator outputs (e.g., crystal or ceramic resonator) into square clocks for digital logic. IC Role / Device Role / Timing Role: Zero-jitter waveform regenerator using hysteresis to define precise zero-crossing thresholds. Use Value: Delivers stable clock edges with <1 ns jitter contribution, critical for synchronous data capture. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar hex Schmitt-trigger inverter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LV14APWR | 3.3 V only (1.65–3.6 V), lower drive (±12 mA), no TTL input compatibility. | Requires level translation when interfacing with 5 V TTL sources; unsuitable for direct 74LS replacement. | Select when operating in 3.3 V systems with lower power budget and no legacy TTL integration. |
| MC74HC14ADTR2G | CMOS-only inputs (VIH = 3.5 V min), wider VCC range (2–6 V), same SOIC-14 package. | Cannot accept 5 V TTL logic levels directly; requires pull-up or buffer if driven by 74LS/74F. | Choose for mixed-voltage designs where supply flexibility outweighs TTL interoperability. |
Compared with SN74LV14APWR and MC74HC14ADTR2G, the MC74ACT14ML1 uniquely combines 5 V TTL input compatibility, industrial temperature rating, and ±24 mA drive in a pin-compatible SOIC-14 package-making it the only option for drop-in upgrades of legacy 74LS14-based systems without layout change.
Availability
MC74ACT14ML1 is available at Aetrix Electronics and suitable for industrial automation, automotive body control modules, and test equipment requiring stable component supply, long-term obsolescence management, and consistent parametric performance across production lots.
Supply support for MC74ACT14ML1 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 sensing solutions for automotive, industrial, and cloud infrastructure markets.
The MC74ACT14ML1 belongs to the ACT (Advanced CMOS TTL-compatible) logic family, engineered specifically for seamless migration from bipolar TTL systems while delivering CMOS power efficiency and noise immunity.
FAQ
What is the maximum supply voltage for the MC74ACT14ML1?
The MC74ACT14ML1 has an absolute maximum VCC rating of +7.0 V, but its recommended operating range is strictly 4.5 V to 5.5 V. Operation outside this window risks violating input threshold specifications and may cause excessive ICC or reduced noise margin. The MC74ACT14ML1 must be powered within 4.5–5.5 V to guarantee TTL-compatible input behavior and full output drive capability.
Does the MC74ACT14ML1 support 3.3 V logic inputs?
No, the MC74ACT14ML1 does not reliably accept 3.3 V logic inputs as valid HIGH signals. Its VIH minimum is 2.0 V at VCC = 5.0 V, but its input structure is optimized for 5 V TTL levels (2.0–5.0 V HIGH, 0–0.8 V LOW). Driving the MC74ACT14ML1 with 3.3 V CMOS outputs may result in marginal or undefined switching; level translation is recommended for mixed-voltage interfacing.
What is the hysteresis voltage of the MC74ACT14ML1 at 5.0 V supply?
At VCC = 5.0 V, the MC74ACT14ML1 exhibits a minimum hysteresis (Vh(min)) of 0.4 V and a typical hysteresis (Vh(typ)) of 1.2 V, calculated as Vt+ – Vt–. This hysteresis is process-trimmed and stable over temperature and supply variation, enabling robust noise rejection in real-world industrial signal paths where the MC74ACT14ML1 is commonly deployed.
Can the MC74ACT14ML1 drive a 50 Ω transmission line directly?
No, the MC74ACT14ML1 is not designed for 50 Ω line driving. Its ±24 mA output drive corresponds to ~200 Ω effective source impedance at 5 V, making it suitable for CMOS/TTL fanout and short PCB traces-but not for controlled-impedance RF or high-speed serial lines. For 50 Ω termination, a dedicated line driver or buffer such as the MC100EP016 should be used alongside the MC74ACT14ML1.
Is the MC74ACT14ML1 pin-compatible with the MC74AC14ML1?
Yes, the MC74ACT14ML1 is pin-compatible with the MC74AC14ML1 in the same SOIC-14 (M suffix) package. Both share identical pinout, footprint, and function table. However, the MC74ACT14ML1 features TTL-compatible inputs (VIH = 2.0 V), whereas the MC74AC14ML1 uses pure CMOS inputs (VIH = 3.5 V min at VCC = 5 V), so direct substitution requires verification of upstream logic family compatibility.
MC74ACT14ML1 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:
- -
MC74ACT14ML1 FAQ
1.How can I place an order for MC74ACT14ML1 through Aetrix?
Please submit a Request for Quotation (RFQ) for MC74ACT14ML1 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 MC74ACT14ML1 reliable?
The price and inventory of MC74ACT14ML1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC74ACT14ML1 is usually 5 days.
3.What payment methods are accepted for MC74ACT14ML1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC74ACT14ML1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC74ACT14ML1?
MC74ACT14ML1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC74ACT14ML1 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 MC74ACT14ML1?
For technical support, including MC74ACT14ML1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC74ACT14ML1 requirements.
6.How does Aetrix verify that MC74ACT14ML1 is sourced from the original manufacturer or authorized distributors?
All MC74ACT14ML1 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 MC74ACT14ML1 meets industry standards.
7.What is the process for return or replacement of MC74ACT14ML1?
All MC74ACT14ML1 units undergo pre-shipment inspection (PSI). If there is an issue with MC74ACT14ML1, 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 MC74ACT14ML1 part is unused and in its original packaging.
Return procedure for MC74ACT14ML1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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