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onsemi MC74ACT02NG
- Part No.:
- MC74ACT02NG
- Manufacturer:
- onsemi
- Category:
- Gates and Inverters
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
MC74ACT02NG.pdf
- Description:
- IC GATE NOR 4CH 2-INP 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,673
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Product details
Overview
MC74ACT02NG from onsemi is a quad 2-input NOR gate in high-performance silicon-gate CMOS technology, featuring TTL-compatible inputs, 24 mA output drive capability, propagation delays as low as 1.5 ns at 5.0 V, and operation across −40°C to +85°C. It serves as a logic-level combinatorial gate in digital control, interface buffering, and signal conditioning circuits.
For engineers reviewing the MC74ACT02NG datasheet, pinout, applications, or equivalent options, this page delivers verified electrical specs, SOIC-14 package details, input/output voltage thresholds, dynamic current ratings, and real-world use context for industrial and embedded system design.
Technical Context
The MC74ACT02NG implements four independent 2-input NOR gates using advanced CMOS process technology optimized for speed-power trade-offs. 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 bipolar logic families without level-shifting.
Each gate delivers symmetrical output drive: IOH = −24 mA and IOL = 24 mA at VCC = 5.0 V, with VOH ≥ 4.4 V and VOL ≤ 0.44 V under full load. Propagation delay (tPLH/tPHL) is guaranteed ≤ 9.0 ns/10 ns over temperature and voltage, measured at CL = 50 pF.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Supply Range | 4.5 V to 5.5 V - ensures compatibility with standard 5 V TTL and mixed-voltage logic systems |
| VIH / VIL Thresholds | 2.0 V / 0.8 V at 5 V - enables reliable recognition of TTL logic levels without external biasing |
| IOH / IOL Drive | −24 mA / 24 mA - supports fan-out of ≥10 LS-TTL loads or direct driving of small LEDs and buffers |
| tPLH / tPHL Max | 9.0 ns / 10 ns at 5 V, CL = 50 pF - suitable for sub-100 MHz clock-domain gating and fast control path logic |
| Operating Temperature | −40°C to +85°C - qualified for industrial-grade embedded controllers and automotive body electronics |
| Input Capacitance | 4.5 pF - minimizes loading on preceding stage and preserves signal edge integrity in high-speed routing |
| ICC Quiescent Current | ≤ 40 μA at 5.5 V - enables low-static-power operation in battery-backed or always-on subsystems |
Pinout & Package
MC74ACT02NG is supplied in a Pb-free SOIC-14 (Case 751A) package, 8.75 mm × 3.90 mm × 1.75 mm, with 1.27 mm pitch and gull-wing leads. Pin 1 is marked by a notch or beveled corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 4, 5, 8, 9, 12, 13 | NOR Gate Inputs (A/B) | Eight total inputs across four gates; each pair (e.g., pins 1&2 → pin 3) forms one NOR function |
| 3, 6, 10, 11 | NOR Gate Outputs (Y) | Four independent active-low outputs; each sinks/supplies 24 mA with rail-to-rail swing |
| 7 | GND | Logic ground reference; must be connected to system common return with low-impedance path |
| 14 | VCC | Positive supply input; requires local 0.1 μF ceramic decoupling adjacent to pin |
Key Features
| Feature | Design Value |
|---|---|
| TTL-Compatible Inputs | Accepts standard 5 V TTL logic thresholds (VIH ≥ 2.0 V, VIL ≤ 0.8 V), eliminating need for level translators when interfacing with 74LS or microcontroller GPIO |
| 24 mA Output Drive | Supports direct connection to multiple LS-TTL inputs or small-signal loads without external buffers, reducing BOM count and board area |
| Low Propagation Delay | Guaranteed ≤ 9.0 ns high-to-low and ≤ 10 ns low-to-high delay at 5 V enables use in timing-critical enable/gating paths up to ~100 MHz |
| Pb-Free SOIC-14 Package | RoHS-compliant, industry-standard footprint compatible with automated SMT assembly and reflow profiles per J-STD-020 |
| Industrial Temperature Range | Specified from −40°C to +85°C ensures stable logic behavior in uncontrolled environments such as factory automation and outdoor electronics |
Applications
| Industrial PLC Input Conditioning | Microcontroller GPIO Expansion Logic |
|---|---|
Use Scenario: Converting noisy 24 V DC field sensor signals into clean 5 V logic levels for PLC digital input modules. IC Role / Device Role / Timing Role: NOR gate used as active-low wired-OR combiner and noise-filtering logic element before MCU sampling. Use Value: TTL-compatible inputs tolerate wide input voltage margins; 24 mA sink capability drives optocoupler LEDs directly without external transistors. |
Use Scenario: Expanding limited GPIO count on an ARM Cortex-M0 microcontroller to manage eight discrete control lines. IC Role / Device Role / Timing Role: Combinatorial logic block implementing enable/disable gating for peripheral power domains and status flag aggregation. Use Value: Sub-10 ns propagation delay ensures deterministic timing alignment with 50 MHz MCU clocks; low ICC supports always-on monitoring modes. |
| Legacy System Bus Arbitration | LED Driver Enable Logic |
Use Scenario: Resolving bus contention between two 8-bit microprocessors sharing a common data/address bus in retro-computing hardware. IC Role / Device Role / Timing Role: NOR-based priority encoder generating bus grant signals with minimal added latency. Use Value: Guaranteed 9.0 ns max tPLH ensures arbitration completes within one CPU cycle at 20 MHz; robust VIH/VIL prevents metastability during voltage transitions. |
Use Scenario: Controlling multiplexed 7-segment LED displays where segment drivers require synchronized enable pulses. IC Role / Device Role / Timing Role: Active-low enable generator combining row/column strobes to activate display segments with precise timing. Use Value: 24 mA output drive powers common-anode LED segments directly; low input capacitance (4.5 pF) preserves sharp enable edges for flicker-free display updates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad 2-input NOR gate applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ACT02N | Same logic function, identical AC/DC specs, but TI's SOIC-14 package has slightly different thermal resistance (JA = 109°C/W vs. onsemi's 116°C/W) | Drop-in functional replacement; validated for same industrial temp range and 5 V supply systems | Select when sourcing from TI-authorized channels or requiring TI-specific qualification documentation |
| 74VHC02N | Higher VCC range (2–5.5 V), lower drive (±8 mA), slower max delay (13.5 ns), and non-TTL-compatible inputs (VIH = 70% VCC) | Not suitable for direct TTL interfacing; better for ultra-low-power 3.3 V systems where speed is secondary | Choose only if operating below 4.5 V or prioritizing static power over drive strength and speed |
Compared with SN74ACT02N, MC74ACT02NG offers marginally higher thermal resistance but identical logic behavior and drive; versus 74VHC02N, MC74ACT02NG provides superior speed, drive, and TTL compatibility-making it the preferred choice for 5 V industrial control and legacy interface applications.
Availability
MC74ACT02NG is available at Aetrix Electronics and suitable for industrial PLCs, microcontroller-based instrumentation, legacy bus arbitration circuits, and LED display control systems requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MC74ACT02NG 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 focused on energy-efficient innovation for automotive, industrial, cloud, medical, and IoT applications.
The MC74ACT02NG belongs to onsemi's 74ACT logic family-designed specifically for high-speed, TTL-compatible 5 V digital systems requiring robust noise immunity, low propagation delay, and industrial temperature resilience.
FAQ
What is the maximum supply voltage for MC74ACT02NG?
The absolute maximum VCC rating for MC74ACT02NG is +6.5 V, but the recommended operating range is strictly 4.5 V to 5.5 V. Operating outside this window risks violating input threshold specifications and may degrade propagation delay consistency or increase ICC beyond datasheet limits. Always maintain VCC within 4.5–5.5 V for guaranteed performance in designs using MC74ACT02NG.
Does MC74ACT02NG support 3.3 V logic interfaces?
No-MC74ACT02NG is not designed for 3.3 V operation. Its input thresholds (VIH ≥ 2.0 V, VIL ≤ 0.8 V) and AC characteristics are specified only at VCC = 4.5–5.5 V. At 3.3 V, VIH would fall below required minimums, risking unreliable logic recognition. For 3.3 V systems, consider MC74VHC02 or 74LVC02 instead of MC74ACT02NG.
What is the pin 1 marking convention for MC74ACT02NG?
MC74ACT02NG uses standard SOIC-14 orientation: pin 1 is located at the end with the package notch or beveled corner, counting counter-clockwise. The top-side marking "ACT02" and date code (e.g., "ALYW") appear adjacent to pin 1. This physical identification matches Case 751A mechanical drawings and ensures correct placement during automated assembly of MC74ACT02NG.
Can MC74ACT02NG drive LEDs directly?
Yes-each output of MC74ACT02NG can sink up to 24 mA continuously, sufficient to drive standard 5 mm through-hole or SMD LEDs (e.g., 20 mA @ 1.8–2.2 V forward voltage) with a series resistor. For example, at VCC = 5.0 V and LED VF = 2.0 V, a 150 Ω resistor yields ~20 mA. Ensure total device power dissipation remains within 1077 mW (SOIC) when multiple outputs are active simultaneously in MC74ACT02NG.
Is MC74ACT02NG pin-compatible with MC74AC02NG?
Yes-MC74ACT02NG and MC74AC02NG share identical pinout, package (SOIC-14), and DC logic functionality. However, MC74ACT02NG features TTL-compatible inputs (VIH = 2.0 V), while MC74AC02NG requires higher VIH (2.1 V at 4.5 V). Substituting MC74ACT02NG for MC74AC02NG improves noise margin in mixed-technology systems, but verify timing margins since ACT variants have slightly faster propagation delays than AC versions in MC74ACT02NG applications.
MC74ACT02NG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 74ACT
- Package/Case:
- 14-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Logic Type:
- NOR 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:
- 9.5ns @ 5V, 50pF
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 14-PDIP
MC74ACT02NG FAQ
1.How can I place an order for MC74ACT02NG through Aetrix?
Please submit a Request for Quotation (RFQ) for MC74ACT02NG 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 MC74ACT02NG reliable?
The price and inventory of MC74ACT02NG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC74ACT02NG is usually 5 days.
3.What payment methods are accepted for MC74ACT02NG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC74ACT02NG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC74ACT02NG?
MC74ACT02NG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC74ACT02NG 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 MC74ACT02NG?
For technical support, including MC74ACT02NG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC74ACT02NG requirements.
6.How does Aetrix verify that MC74ACT02NG is sourced from the original manufacturer or authorized distributors?
All MC74ACT02NG 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 MC74ACT02NG meets industry standards.
7.What is the process for return or replacement of MC74ACT02NG?
All MC74ACT02NG units undergo pre-shipment inspection (PSI). If there is an issue with MC74ACT02NG, 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 MC74ACT02NG part is unused and in its original packaging.
Return procedure for MC74ACT02NG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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