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STMicroelectronics 74AC02MTR
- Part No.:
- 74AC02MTR
- Manufacturer:
- STMicroelectronics
- Category:
- Gates and Inverters
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
74AC02MTR.pdf
- Description:
- IC GATE NOR 4CH 2-INP 14SO
- Quantity:
- Payment:
- Shipping:
Inventory:2,579
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Product details
Overview
74AC02MTR from STMicroelectronics is a quad 2-input NOR gate IC in TSSOP-14 package, operating from 2V to 6V supply, delivering 4.2ns typical propagation delay at 5V, ±24mA symmetrical output drive, and 2µA max quiescent current at 25°C - used in high-speed digital logic interfacing, address decoding, and control signal arbitration in industrial PLC I/O modules.
For engineers reviewing the 74AC02MTR datasheet, 74AC02MTR pinout, 74AC02MTR application, or 74AC02MTR equivalent, key selection criteria include transmission-line driving capability (50Ω), latch-up immunity, ESD tolerance (2kV), and compatibility with legacy 74-series logic families under wide VCC and temperature ranges (-55°C to +125°C).
Technical Context
The 74AC02MTR implements four independent NOR gates using sub-micron C2MOS technology with three-stage buffered outputs, enabling high noise immunity (VNIH/VNIL ≥ 28% VCC) and balanced tPLH/tPHL delays. Its input structure includes protection diodes for ±20mA DC clamp current and 2kV HBM ESD rating.
It drives 50Ω transmission lines directly without external termination, supports incident-wave switching, and maintains stable logic thresholds across VCC = 2–6V with VIH/VIL specified at 3.0V/4.5V/5.5V operating points and full industrial temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Operating Range | 2V to 6V - enables interoperability with 3.3V and 5V systems without level shifters |
| tPD (Typ.) | 4.2ns at VCC = 5V - supports >100MHz toggle rates in combinatorial logic paths |
| IOL / IOH (Min.) | 24mA - drives standard 50Ω PCB traces or multiple 74AC inputs without fanout limitation |
| ICC (Max.) | 2µA at TA = 25°C - enables ultra-low static power in battery-backed or standby-critical control logic |
| VIH / VIL (Min./Max.) | 2.1V / 0.9V at VCC = 3.0V - ensures robust TTL- and CMOS-compatible input thresholds |
| ESD Rating | 2kV HBM - protects against handling-induced discharge in automated assembly and field service |
| Operating Temp | -55°C to +125°C - qualified for extended-temperature industrial and transportation control environments |
Pinout & Package
TSSOP-14 package: 4.9mm × 6.4mm body, 0.65mm pitch, 14-pin surface-mount with exposed pad not present; JEDEC MO-153 compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4, 10, 13 | 1Y, 2Y, 3Y, 4Y | Active-low NOR outputs - each capable of sourcing/sinking 24mA with matched rise/fall impedance |
| 2, 5, 8, 11 | 1A, 2A, 3A, 4A | First input per gate - accepts 0–VCC logic levels with 4pF input capacitance and ±0.1µA leakage |
| 3, 6, 9, 12 | 1B, 2B, 3B, 4B | Second input per gate - identical electrical characteristics to A inputs; no internal pull-ups/downs |
| 7 | GND | Logic ground reference - shared return path for all four gates; decoupling required within 5mm |
| 14 | VCC | Positive supply - must be bypassed with 100nF ceramic capacitor near pin; supports 2–6V operation |
Key Features
| Feature | Design Value |
|---|---|
| Symmetrical output drive | |IOH| = IOL = 24mA min - eliminates skew in bidirectional bus control and enables clean 50Ω line termination |
| Transmission-line driving | Guaranteed incident-wave switching on 50Ω lines - eliminates need for external series resistors in high-speed routing |
| Wide VCC range | 2V to 6V operation - allows direct interface between 3.3V microcontrollers and 5V peripheral logic without translators |
| Latch-up immunity | Improved process-level resistance - prevents destructive SCR triggering during transient overvoltage events |
| Input noise margin | VNIH = VNIL = 28% VCC min - provides ≥1.4V noise margin at 5V, ensuring reliable operation in electrically noisy factory floors |
Applications
| Industrial PLC Input Conditioning | Automotive Body Control Module Logic |
|---|---|
Use Scenario: Combining multiple sensor fault signals into a single hardware OR/NOR alarm line before MCU sampling. IC Role / Device Role / Timing Role: Quad NOR gate performing wired-OR aggregation with sub-5ns delay to preserve real-time response. Use Value: Eliminates software polling overhead and ensures deterministic fault detection within 10ns of input change. |
Use Scenario: Generating enable/disable strobes for door lock actuators based on ignition status and door switch states. IC Role / Device Role / Timing Role: Combinatorial logic element implementing safety interlock conditions with fail-safe low-active outputs. Use Value: Provides hardware-enforced timing-critical sequencing independent of firmware execution state. |
| Medical Infusion Pump Control Logic | Test Equipment Signal Gating |
Use Scenario: Validating dual-redundant motor enable signals before activating stepper driver stages. IC Role / Device Role / Timing Role: Safety-critical gate verifying concurrent validity of two independent control paths via NOR-based consensus logic. Use Value: Enforces hardware-level AND-of-NOT logic to prevent single-point failure activation of therapy delivery. |
Use Scenario: Enabling precise pulse gating for calibration signal injection in automated test fixtures. IC Role / Device Role / Timing Role: High-fidelity signal router with <5ns delay matching and 24mA drive for 50Ω coaxial paths. Use Value: Maintains nanosecond-level timing integrity between stimulus and measurement channels. |
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 |
|---|---|---|---|
| SN74AC02DR | TI SOIC-14; tPD = 4.5ns (typ.), ICC = 2µA (max), same VCC range and drive strength | No TSSOP footprint; larger thermal resistance (θJA = 120°C/W vs. 160°C/W) | Preferred where board space permits and hand-soldering or legacy reflow profiles are used |
| 74VHC02FT | Fujitsu TSSOP-14; tPD = 7.5ns (typ.), lower drive (±8mA), higher noise immunity (40% VCC) | Lower speed and drive limit use in high-current or >50MHz edge-sensitive paths | Selected when ultra-low ICC (0.1µA) and enhanced noise rejection outweigh speed requirements |
Compared with SN74AC02DR and 74VHC02FT, the 74AC02MTR delivers optimal balance of speed, drive strength, and compact TSSOP packaging - making it preferred for space-constrained, high-reliability industrial control logic where 4.2ns timing and 24mA sourcing are design-critical.
Availability
74AC02MTR is available at Aetrix Electronics and suitable for industrial PLC I/O modules, automotive body control units, medical infusion pump logic, and automated test equipment requiring stable component supply across extended temperature and long production lifecycles.
Supply support for 74AC02MTR 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, designing and manufacturing analog, digital, and mixed-signal ICs for industrial, automotive, and consumer applications.
The 74AC logic family targets high-speed, low-power, and robust industrial control applications - emphasizing wide voltage operation, noise immunity, and legacy 74-series compatibility without performance trade-offs.
FAQ
Is 74AC02MTR pin-compatible with standard 7402 devices?
Yes - it is functionally and pinout-compatible with industry-standard 7402 quad NOR gates, including 74LS02 and 74HC02. All 14 pins map identically: inputs (A/B), outputs (Y), VCC (pin 14), and GND (pin 7). No redesign is needed when upgrading from bipolar or older CMOS variants.
Can 74AC02MTR operate reliably at 3.3V with 50Ω transmission-line loads?
Yes - AC specifications confirm tPLH/tPHL ≤ 5.5ns and VOH ≥ 2.9V (IOH = –12mA) at VCC = 3.3V. Its 50Ω line-driving capability is validated down to 3.0V, supporting direct connection to controlled-impedance PCB traces without series termination resistors.
What is the maximum continuous output current per pin?
The absolute maximum DC output current is ±50mA per pin, but the guaranteed minimum drive is ±24mA under worst-case conditions (–55°C to +125°C, VCC = 2V–6V). Sustained operation above ±24mA requires thermal derating and verification of junction temperature limits.
Does 74AC02MTR require external pull-up or pull-down resistors on unused inputs?
No - unused inputs may be tied directly to VCC or GND. The device has no internal pull resistors, but its high input impedance (<0.1µA leakage) and defined VIH/VIL thresholds ensure stable logic states without external biasing, simplifying layout in sparse-gate designs.
74AC02MTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- 74AC
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Logic Type:
- NOR Gate
- Number of Circuits:
- 4
- Number of Inputs:
- 2
- Features:
- -
- Voltage - Supply:
- 2V ~ 6V
- Current - Quiescent (Max):
- 2 µA
- Current - Output High, Low:
- 24mA, 24mA
- Input Logic Level - Low:
- 0.9V ~ 1.65V
- Input Logic Level - High:
- 2.1V ~ 3.85V
- Max Propagation Delay @ V, Max CL:
- 8ns @ 5V, 50pF
- Operating Temperature:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SO
74AC02MTR FAQ
1.How can I place an order for 74AC02MTR through Aetrix?
Please submit a Request for Quotation (RFQ) for 74AC02MTR 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 74AC02MTR reliable?
The price and inventory of 74AC02MTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AC02MTR is usually 5 days.
3.What payment methods are accepted for 74AC02MTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AC02MTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74AC02MTR?
74AC02MTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74AC02MTR 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 74AC02MTR?
For technical support, including 74AC02MTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AC02MTR requirements.
6.How does Aetrix verify that 74AC02MTR is sourced from the original manufacturer or authorized distributors?
All 74AC02MTR 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 74AC02MTR meets industry standards.
7.What is the process for return or replacement of 74AC02MTR?
All 74AC02MTR units undergo pre-shipment inspection (PSI). If there is an issue with 74AC02MTR, 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 74AC02MTR part is unused and in its original packaging.
Return procedure for 74AC02MTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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