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onsemi MC74ACT02DT
- Part No.:
- MC74ACT02DT
- Manufacturer:
- onsemi
- Category:
- Gates and Inverters
- Package:
- -
- Datasheet:
-
MC74ACT02DT.pdf
- Description:
- IC GATE NOR
- Quantity:
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- Shipping:
Inventory:24,960
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Product details
Overview
MC74ACT02DT from onsemi is a quad 2-input NOR gate logic IC with TTL-compatible inputs, designed for high-speed digital signal routing in industrial control and embedded interface circuits. It operates at 4.5–5.5 V, delivers ±24 mA output drive, exhibits 8.5 ns typical propagation delay (tPLH) at 5 V/50 pF, and supports −40°C to +85°C ambient operation.
For engineers reviewing the MC74ACT02DT datasheet, pinout, applications, or equivalent options, this device serves as a low-power, high-drive CMOS logic gate suitable for level translation, enable/disable control, and combinational logic synthesis where input compatibility with legacy TTL systems is required.
Technical Context
The MC74ACT02DT implements four independent 2-input NOR gates in a single monolithic CMOS structure. Its TTL-compatible inputs accept VIH ≥ 2.0 V and VIL ≤ 0.8 V at 5 V supply, enabling direct interfacing with 74LS and other bipolar logic families without external level shifters.
Each gate provides rail-to-rail output swing, with VOH ≥ 4.4 V and VOL ≤ 0.44 V under 24 mA load conditions at VCC = 4.5–5.5 V. The device uses standard CMOS output stages with symmetrical sourcing/sinking capability and exhibits low quiescent ICC ≤ 40 μA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | Quad 2-input NOR gate - enables compact implementation of OR-invert logic and active-low enable functions |
| Supply Voltage Range | 4.5 V to 5.5 V - ensures stable operation across regulated 5 V rails with ±10% tolerance |
| Output Drive | ±24 mA per output - sufficient to directly drive LEDs, small relays, or fan-out to ≥10 LS-TTL loads |
| Propagation Delay | 9.0 ns max (tPHL), 9.0 ns max (tPLH) at 5 V/50 pF - supports >50 MHz toggle rates in synchronous designs |
| Input Compatibility | TTL-compatible inputs (VIH ≥ 2.0 V, VIL ≤ 0.8 V) - eliminates need for external translators when interfacing with 74LS, 74F, or microcontroller GPIOs |
| Operating Temperature | −40°C to +85°C - qualified for industrial-grade environments including motor drives and PLC I/O modules |
| Package | TSSOP-14 (Case 948G) - 5.0 × 4.4 mm footprint with 0.65 mm pitch, optimized for space-constrained PCB layouts |
Pinout & Package
TSSOP-14 package (Case 948G), 5.0 mm × 4.4 mm body, 0.65 mm lead pitch, Pb-free, moisture sensitivity level 1 (MSL1).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 4, 5, 8, 9, 11, 12 | Input (A/B per gate) | Two dedicated inputs per NOR gate; all inputs TTL-compatible with 2.0 V VIH threshold at 5 V |
| 3, 6, 10, 13 | Output (Y per gate) | Active-low NOR outputs; each capable of sourcing/sinking 24 mA while maintaining VOH ≥ 4.4 V / VOL ≤ 0.44 V |
| 7 | GND | Ground reference for all logic and power domains; requires low-impedance connection to system ground plane |
| 14 | VCC | Positive supply input; must be decoupled with 0.1 μF ceramic capacitor placed within 5 mm of pin |
Key Features
| Feature | Design Value |
|---|---|
| TTL-compatible inputs | Enables plug-in replacement of 74LS02 in legacy systems without redesigning input interface circuitry |
| ±24 mA output drive | Supports direct driving of multiple LS-TTL inputs or small-signal discrete loads without buffer amplification |
| Low 9.0 ns max propagation delay | Meets timing budgets in 20–25 MHz clock-domain control logic and fast enable/disable sequencing |
| Pb-free TSSOP-14 package | Complies with RoHS Directive 2011/65/EU and JEDEC J-STD-020 MSL1 reflow profile requirements |
| Wide operating temperature range | Validated for continuous operation in industrial enclosures with ambient extremes from −40°C to +85°C |
Applications
| Industrial PLC I/O Modules | Automotive Body Control Units |
|---|---|
Use Scenario: Active-low enable logic for relay driver banks and analog multiplexer selection in programmable logic controller backplanes. IC Role / Device Role / Timing Role: NOR gate implementing inverted OR function to assert enable signals only when all safety interlocks are satisfied. Use Value: Eliminates need for discrete inverters and reduces component count by consolidating four independent enable paths into one 14-pin package. | Use Scenario: Door lock/unlock status arbitration and window lift/drop inhibit logic in centralized body electronics modules. IC Role / Device Role / Timing Role: Combinational logic element generating mutually exclusive control signals from door switch and key fob inputs. Use Value: TTL-compatible inputs interface directly with mechanical switch debounced outputs and microcontroller GPIOs without pull-up resistors or voltage dividers. |
| Medical Diagnostic Equipment Panels | Test & Measurement Instrumentation |
Use Scenario: Front-panel button debounce and mode selection logic in portable ultrasound and ECG devices requiring high reliability. IC Role / Device Role / Timing Role: Input conditioning and priority encoding for tactile pushbutton arrays with fail-safe reset coordination. Use Value: Guaranteed −40°C to +85°C operation ensures consistent response across clinical environments and transport storage conditions. | Use Scenario: Signal gating and trigger synchronization in benchtop oscilloscopes and logic analyzers with multi-channel acquisition paths. IC Role / Device Role / Timing Role: High-speed enable path for ADC sampling clocks and data valid strobes in real-time capture subsystems. Use Value: 9.0 ns max propagation delay preserves sub-10 ns timing margins between trigger events and digitization windows. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad NOR gate applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ACT02DR | SOIC-14 package (Case 751A); identical electrical specs and pinout; 55-unit rail vs. 96-unit rail for MC74ACT02DT | Requires PCB layout change due to larger SOIC footprint (8.75 × 4.0 mm vs. 5.0 × 4.4 mm) | Select when board space permits larger package and existing SOIC assembly infrastructure is in place |
| 74VHC02MTCX | Higher VIH (3.15 V min at 5 V); lower drive (±8 mA); faster tPLH (5.5 ns typ); same TSSOP-14 footprint | Not TTL-compatible - requires level-shifting for legacy TTL inputs; unsuitable for direct 74LS interface | Select only for new designs prioritizing speed and ultra-low ICC (<2 μA), not for drop-in TTL replacement |
Compared with SN74ACT02DR and 74VHC02MTCX, the MC74ACT02DT uniquely combines TTL-compatible inputs, ±24 mA drive, and space-saving TSSOP-14 packaging - making it optimal for industrial upgrades where footprint, interface compatibility, and output strength are jointly constrained.
Availability
MC74ACT02DT is available at Aetrix Electronics and suitable for industrial automation, automotive body electronics, and medical diagnostic equipment requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MC74ACT02DT 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 and sensing solutions for automotive, industrial, cloud, and medical markets.
The MC74ACT02DT belongs to the 74ACT logic family, engineered for high-speed, TTL-compatible CMOS operation in industrial control and embedded interface applications where robustness and interoperability are critical.
FAQ
What logic family does the MC74ACT02DT belong to, and how does it differ from standard 74AC devices?
The MC74ACT02DT belongs to the 74ACT logic family, which features TTL-compatible input thresholds (VIH ≥ 2.0 V, VIL ≤ 0.8 V at 5 V) unlike standard 74AC devices that require CMOS-level inputs (VIH ≥ 3.15 V). This allows the MC74ACT02DT to interface directly with 74LS and other bipolar logic without level shifters - a key distinction confirmed in the "′ACT02 Has TTL Compatible Inputs" feature list and DC characteristics tables for 74ACT.
What is the maximum propagation delay specification for MC74ACT02DT at 5 V supply and 50 pF load?
The maximum propagation delay for MC74ACT02DT is 9.0 ns for both tPLH and tPHL under recommended operating conditions (VCC = 5.0 V ±0.5 V, TA = −40°C to +85°C, CL = 50 pF), as specified in the AC Characteristics table on page 4 of the datasheet. This value applies to the TSSOP-14 package variant and is measured from 50% input transition to 50% output transition.
Does MC74ACT02DT support operation at 3.3 V supply voltage?
No, MC74ACT02DT is not rated for 3.3 V operation. Its recommended operating supply range is strictly 4.5 V to 5.5 V, as defined in the "RECOMMENDED OPERATING CONDITIONS" table. The 74ACT family's input thresholds and output drive performance are characterized only within this range; using 3.3 V may result in undefined logic states or insufficient noise margin.
What is the thermal performance limit for MC74ACT02DT in its TSSOP-14 package?
The MC74ACT02DT in TSSOP-14 package has a maximum junction temperature rating of 150°C and an operating ambient temperature range of −40°C to +85°C. While the datasheet does not specify θJA for DT suffix, the TSSOP-14 case (948G) is thermally rated for continuous operation at full output drive within this ambient range when mounted on standard FR-4 PCBs with adequate copper pour.
Is MC74ACT02DT pin-compatible with MC74ACT02D (SOIC-14) and MC74ACT02N (PDIP-14)?
Yes, MC74ACT02DT is pin-compatible with MC74ACT02D and MC74ACT02N. All three variants share identical pin numbering and function mapping per Figure 1 (Pinout: 14-Lead Packages), with Pin 1 = Input A of Gate 1, Pin 2 = Input B of Gate 1, Pin 3 = Output Y of Gate 1, etc., and common GND (Pin 7) and VCC (Pin 14). This allows direct substitution across packages when board layout accommodates the physical dimensions.
MC74ACT02DT 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:
- -
MC74ACT02DT FAQ
1.How can I place an order for MC74ACT02DT through Aetrix?
Please submit a Request for Quotation (RFQ) for MC74ACT02DT 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 MC74ACT02DT reliable?
The price and inventory of MC74ACT02DT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC74ACT02DT is usually 5 days.
3.What payment methods are accepted for MC74ACT02DT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC74ACT02DT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC74ACT02DT?
MC74ACT02DT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC74ACT02DT 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 MC74ACT02DT?
For technical support, including MC74ACT02DT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC74ACT02DT requirements.
6.How does Aetrix verify that MC74ACT02DT is sourced from the original manufacturer or authorized distributors?
All MC74ACT02DT 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 MC74ACT02DT meets industry standards.
7.What is the process for return or replacement of MC74ACT02DT?
All MC74ACT02DT units undergo pre-shipment inspection (PSI). If there is an issue with MC74ACT02DT, 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 MC74ACT02DT part is unused and in its original packaging.
Return procedure for MC74ACT02DT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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