onsemi MC74ACT86DT
- Part No.:
- MC74ACT86DT
- Manufacturer:
- onsemi
- Category:
- Gates and Inverters
- Package:
- -
- Datasheet:
-
MC74ACT86DT.pdf
- Description:
- IC GATE XOR
- Quantity:
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Product details
Overview
MC74ACT86DT from onsemi is a quad 2-input XOR gate IC in TSSOP-14 package, operating at 4.5–5.5 V supply, delivering ±24 mA output drive, with propagation delays as low as 1.5 ns (typ) and TTL-compatible input thresholds. It serves in digital logic level translation, parity generation, and control signal conditioning within industrial PLC I/O modules.
For engineers reviewing the MC74ACT86DT datasheet, pinout, applications, or equivalent options, key selection factors include its ACT-series 5 V TTL-compatible inputs, guaranteed 24 mA drive strength, TSSOP-14 thermal and space advantages over PDIP/SOIC, and -40°C to +85°C industrial temperature operation.
Technical Context
The MC74ACT86DT implements four independent XOR logic functions using bipolar-CMOS (BICMOS) process technology, enabling TTL-level input compatibility while maintaining CMOS power efficiency. Its input thresholds are fixed at VIH = 2.0 V min and VIL = 0.8 V max across 4.5–5.5 V VCC, ensuring robust noise margin in mixed-signal environments.
Each gate features symmetrical tPLH/tPHL propagation delay characteristics (1.5–10.5 ns over temperature and voltage), with output stages rated for ±24 mA DC sink/source per pin and capable of transient dynamic currents up to ±75 mA under defined test conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | 74ACT - TTL-compatible inputs, CMOS outputs, 5 V only |
| Supply Voltage Range | 4.5 V to 5.5 V - Requires regulated 5 V rail; not 3.3 V compatible |
| Output Drive Strength | ±24 mA - Sufficient to directly drive LED indicators or fan-out to ≥10 LS-TTL loads |
| Propagation Delay (tPLH/tPHL) | 1.5 ns (typ), ≤10.5 ns (max) - Enables use in <100 MHz clock-domain combinatorial paths |
| Input Thresholds | VIH = 2.0 V min, VIL = 0.8 V max - Matches standard TTL logic levels for seamless interface |
| Operating Temperature | −40°C to +85°C - Qualified for industrial ambient environments without derating |
| Power Dissipation Cap | CPD = 35 pF - Predictable dynamic power consumption at 5 MHz toggle rate |
Pinout & Package
TSSOP-14 (DT suffix), Case 948G - 4.4 mm × 5.0 mm body, 0.65 mm lead pitch, exposed pad optional, JEDEC MO-153 compliant. Designed for high-density PCB layouts with improved thermal performance vs. SOIC-14.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 4, 5, 8, 9, 11, 12 | Input A/B per XOR gate | Two dedicated inputs per gate; no internal pull-up/down; require external termination if floating |
| 3, 6, 10, 13 | XOR Output Y | Active-high CMOS output; full rail-to-rail swing; drives capacitive loads ≤50 pF per spec |
| 7 | GND | Ground reference for all inputs/outputs; must be low-impedance connection to system ground plane |
| 14 | VCC | 5 V supply input; requires local 0.1 µF ceramic decoupling capacitor placed ≤3 mm from pin |
Key Features
| Feature | Design Value |
|---|---|
| TTL-compatible input thresholds | VIH = 2.0 V min / VIL = 0.8 V max ensures interoperability with legacy 5 V microcontrollers and peripheral ICs |
| High-output current drive | ±24 mA per output enables direct interface to LEDs, small relays, or multiple LS-TTL inputs without buffers |
| Low propagation delay variation | ΔtPD ≤ 1.0 ns between tPLH and tPHL supports balanced timing in critical XOR-based feedback paths |
| Industrial temperature range | −40°C to +85°C operation verified per JEDEC JESD22-A108, eliminating need for thermal derating in enclosure designs |
Applications
| Industrial PLC Input Conditioning | Embedded System Parity Generation |
|---|---|
Use Scenario: Isolating and conditioning dry-contact sensor inputs in modular I/O racks before feeding to microcontroller GPIO. IC Role / Device Role / Timing Role: XOR gate used as controlled inverter to convert active-low contact closure into active-high logic level with noise immunity. Use Value: Eliminates need for external pull-up resistors and Schmitt triggers due to TTL-compatible hysteresis-free inputs and 24 mA drive capability. | Use Scenario: Real-time even-parity bit generation across 4-bit data buses in safety-critical medical device controllers. IC Role / Device Role / Timing Role: Four independent XOR gates compute pairwise parity bits in combinational logic, feeding into final XOR stage. Use Value: Propagation delay ≤10.5 ns ensures parity validity within one CPU clock cycle at 20 MHz bus frequency. |
| Digital Signal Polarity Control | Legacy Interface Level Translation |
Use Scenario: Selectively inverting UART TX/RX lines or SPI clock phases based on configuration register bits in field-programmable gate arrays. IC Role / Device Role / Timing Role: XOR acts as programmable inverter where one input is data and the other is polarity-select control signal. Use Value: Guaranteed 24 mA drive sustains signal integrity across 15 cm PCB traces loaded with 20 pF capacitance. | Use Scenario: Interfacing 5 V TTL peripherals (e.g., legacy ADCs or DACs) with modern 5 V microcontrollers lacking native TTL input thresholds. IC Role / Device Role / Timing Role: Logic-level translator providing VIH/VIL alignment between mismatched families without external biasing. Use Value: Fixed 2.0 V/0.8 V thresholds eliminate calibration drift issues common in resistor-divider solutions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar XOR gate applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ACT86DR | Same logic function, SOIC-14 package; identical AC/DC specs; 55-unit rail vs. 96-unit rail packaging | No thermal or layout advantage in high-density boards; larger footprint than TSSOP-14 | Select when existing PCB uses SOIC-14 footprints or manual assembly is preferred |
| 74VHC86M | CMOS family; 2–5.5 V supply range; lower drive (±8 mA); higher VIH (3.5 V @ 4.5 V) | Not TTL-compatible; unsuitable for direct replacement where input thresholds must match legacy TTL | Choose only for new 3.3 V–5 V mixed-supply systems requiring ultra-low ICC (<2 µA) |
Compared with SN74ACT86DR and 74VHC86M, the MC74ACT86DT provides superior board-area efficiency via TSSOP-14, maintains strict TTL input compatibility essential for retrofitting, and delivers higher output current for driving heavier loads - making it optimal for space-constrained industrial control modules.
Availability
MC74ACT86DT is available at Aetrix Electronics and suitable for industrial PLC I/O modules, embedded parity generators, digital polarity controllers, and legacy 5 V interface adapters requiring stable component supply and long-term lifecycle support.
Supply support for MC74ACT86DT 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 manufacturer specializing in energy-efficient power management, analog, logic, and sensor solutions for automotive, industrial, and cloud infrastructure markets.
The MC74ACT86DT belongs to the 74ACT logic family - engineered for high-speed, TTL-compatible 5 V digital systems where reliability, consistent timing, and industrial temperature operation are mandatory.
FAQ
What logic family does MC74ACT86DT belong to, and how does it differ from 74AC variants?
The MC74ACT86DT belongs to the 74ACT logic family, which features TTL-compatible input thresholds (VIH = 2.0 V min, VIL = 0.8 V max) and CMOS outputs. Unlike the 74AC variant, the MC74ACT86DT is specified only for 4.5–5.5 V operation and guarantees 24 mA output drive - whereas 74AC versions operate down to 2.0 V and offer lower drive (±24 mA only at VCC ≥ 4.5 V). The MC74ACT86DT is optimized for strict 5 V TTL interoperability.
Can MC74ACT86DT be used with a 3.3 V supply?
No, the MC74ACT86DT is not rated for 3.3 V operation. Its recommended operating conditions specify VCC = 4.5–5.5 V only. At 3.3 V, input thresholds become undefined, VOH drops below TTL VIH minimums, and output drive degrades significantly. For 3.3 V systems, consider 74LVC86 or 74AUC86 instead - but those are not drop-in replacements for MC74ACT86DT.
What is the maximum capacitive load MC74ACT86DT can drive reliably?
The MC74ACT86DT is characterized for CL = 50 pF in AC specifications, with propagation delays measured under that condition. While it can drive higher capacitance, timing margins degrade linearly beyond 50 pF. For loads >50 pF (e.g., long traces or multiple inputs), add series termination or buffer stages. The 24 mA output drive supports ≤20 pF at 20 MHz without waveform distortion - confirmed by onsemi's application note AND8003/D.
Does MC74ACT86DT have built-in ESD protection, and what level is rated?
Yes, the MC74ACT86DT includes on-die ESD protection diodes on all inputs and outputs. It is rated to ±2000 V HBM (Human Body Model) per JEDEC JS-001, and ±200 V MM (Machine Model). This meets standard industrial I/O requirements but does not replace external TVS protection for connectors exposed to harsh environments. The MC74ACT86DT's absolute maximum input voltage is −0.5 V to VCC +0.5 V, reinforcing need for proper clamping in high-noise settings.
Is MC74ACT86DT pin-compatible with MC74AC86DT?
Yes, MC74ACT86DT and MC74AC86DT share identical pinout, package (TSSOP-14), and logic function. However, they differ electrically: MC74AC86DT operates from 2.0–6.0 V and has CMOS-input thresholds, while MC74ACT86DT is 4.5–5.5 V only with TTL-compatible inputs. Swapping them requires verifying VCC stability and input source compatibility - the MC74ACT86DT cannot replace MC74AC86DT in 3.3 V or battery-powered systems.
MC74ACT86DT 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:
- -
MC74ACT86DT FAQ
1.How can I place an order for MC74ACT86DT through Aetrix?
Please submit a Request for Quotation (RFQ) for MC74ACT86DT 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 MC74ACT86DT reliable?
The price and inventory of MC74ACT86DT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC74ACT86DT is usually 5 days.
3.What payment methods are accepted for MC74ACT86DT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC74ACT86DT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC74ACT86DT?
MC74ACT86DT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC74ACT86DT 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 MC74ACT86DT?
For technical support, including MC74ACT86DT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC74ACT86DT requirements.
6.How does Aetrix verify that MC74ACT86DT is sourced from the original manufacturer or authorized distributors?
All MC74ACT86DT 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 MC74ACT86DT meets industry standards.
7.What is the process for return or replacement of MC74ACT86DT?
All MC74ACT86DT units undergo pre-shipment inspection (PSI). If there is an issue with MC74ACT86DT, 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 MC74ACT86DT part is unused and in its original packaging.
Return procedure for MC74ACT86DT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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