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onsemi MC74ACT32DTEL
- Part No.:
- MC74ACT32DTEL
- Manufacturer:
- onsemi
- Category:
- Gates and Inverters
- Package:
- -
- Datasheet:
-
MC74ACT32DTEL.pdf
- Description:
- IC GATE OR
- Quantity:
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- Shipping:
Inventory:50,000
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Product details
Overview
MC74ACT32DTEL from onsemi is a quad 2-input OR gate IC with TTL-compatible inputs, operating at 4.5–5.5 V supply, delivering ±24 mA output drive, and featuring 9.0 ns max propagation delay at 5 V/50 pF. It is used in digital logic interfacing, bus arbitration, and discrete signal combining in industrial control systems.
For engineers reviewing the MC74ACT32DTEL datasheet, pinout, applications, or equivalent options, key selection criteria include guaranteed 5 V TTL input compatibility, 24 mA sink/source capability, TSSOP-14 thermal performance, and AC-characterized timing across –40°C to +85°C.
Technical Context
The MC74ACT32DTEL implements four independent 2-input OR gates using advanced CMOS technology with buffered TTL-compatible input stages. Its input thresholds (VIH = 2.0 V min, VIL = 0.8 V max at VCC = 5.5 V) ensure robust noise margin when driven by standard 5 V TTL outputs.
It operates strictly within 4.5–5.5 V supply range, with guaranteed VOH ≥ 4.4 V and VOL ≤ 0.44 V at IOL/IOH = ±24 mA, and exhibits 20 pF power dissipation capacitance-critical for high-speed fanout and dynamic power estimation in synchronous logic designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | Quad 2-input OR gate - enables parallel signal combination without external pull-ups or level-shifting. |
| Supply Voltage Range | 4.5 V to 5.5 V - restricts use to stable 5 V systems; not compatible with 3.3 V or mixed-voltage domains. |
| Output Drive | ±24 mA per output - supports direct driving of 10 LS-TTL loads or moderate-capacitance PCB traces. |
| Propagation Delay | ≤10.0 ns at 5 V/50 pF - ensures reliable operation up to ~50 MHz toggle rate in non-critical timing paths. |
| Input Compatibility | TTL-compatible (VIH ≥ 2.0 V, VIL ≤ 0.8 V) - interoperates directly with 74LS, 74F, and legacy microcontroller GPIOs. |
| Operating Temperature | –40°C to +85°C - qualified for industrial ambient environments without derating. |
| Power Dissipation Cap. | 20 pF - enables accurate dynamic power calculation (P = CPD × f × V²) for thermal design. |
Pinout & Package
TSSOP-14 (DT suffix, Case 948G), 4.4 mm × 5.0 mm body, 0.65 mm pitch, exposed pad optional, moisture sensitivity level MSL3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 4, 5, 8, 9, 11, 12 | Input A/B of OR gates | Dedicated logic inputs; each pair feeds one OR gate; no shared or bidirectional function. |
| 3, 6, 10, 13 | OR Output Y | Active-high CMOS outputs; capable of sourcing/sinking 24 mA; rail-to-rail swing under load. |
| 7 | GND | Ground reference for all inputs, outputs, and internal circuitry; requires low-impedance PCB connection. |
| 14 | VCC | Positive supply terminal; must be decoupled locally with 0.1 µF ceramic capacitor near pin. |
Key Features
| Feature | Design Value |
|---|---|
| TTL-compatible inputs | Enables direct interface with legacy 5 V TTL logic families without level shifters or resistive biasing. |
| 24 mA output drive | Supports fanout of ≥10 LS-TTL gates or direct LED driving (with series resistor) in indicator circuits. |
| 10 ns max tPD @ 5 V | Meets timing requirements for glue logic in microcontroller peripheral expansion and address decoding. |
| Industrial temperature range | Validated operation from –40°C to +85°C ensures reliability in uncontrolled cabinet or outdoor-mounted equipment. |
| Low ICC quiescent current | Max 40 µA at VCC = 5.5 V reduces standby power in battery-backed or energy-sensitive applications. |
Applications
| Industrial PLC I/O Expansion | Legacy Microcontroller Bus Arbitration |
|---|---|
Use Scenario: Combining multiple sensor fault signals into a single hardware interrupt line for a programmable logic controller. IC Role / Device Role / Timing Role: OR gate aggregating active-high fault flags; no timing-critical path. Use Value: Eliminates need for discrete diode-OR or additional microcontroller GPIOs while maintaining TTL-level compatibility with sensor outputs. | Use Scenario: Resolving bus contention between multiple 8051-family peripherals sharing a common data/address bus. IC Role / Device Role / Timing Role: Priority encoder enable logic; performs combinatorial OR of chip-select strobes. Use Value: Provides deterministic bus grant response within 10 ns, ensuring no bus collision during multi-peripheral access cycles. |
| Automotive Body Control Module | Test Equipment Signal Conditioning |
Use Scenario: Merging door-open, trunk-open, and hood-open switch signals into a unified "body compartment open" status flag. IC Role / Device Role / Timing Role: Level-sensitive combinatorial logic block; operates asynchronously with mechanical switch bounce filtering upstream. Use Value: Reduces BOM count versus discrete solutions and meets AEC-Q100 ambient temperature requirements via industrial-grade qualification. | Use Scenario: Consolidating pass/fail outputs from multiple DUT test channels into a master go/no-go indicator for automated test fixtures. IC Role / Device Role / Timing Role: Final-stage logic OR gate; interfaces with 5 V TTL-level comparators and drives optocoupler inputs. Use Value: Guarantees clean, fast-rising aggregated result signal with 24 mA drive strength sufficient to switch isolation stages reliably. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad 2-input OR gate applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ACT32DR | Same logic function, identical DC/AC specs, SOIC-14 package (wider 3.9 mm body vs. TSSOP-14's 4.4 mm × 5.0 mm). | Requires PCB footprint change; same thermal resistance but lower board density. | Select when SOIC hand-soldering or legacy board reuse is required. |
| 74VHC32M | Higher VIH threshold (3.5 V min at 4.5 V), lower drive (±8 mA), faster tPD (7.5 ns typ), 2–5.5 V supply range. | Not TTL-compatible; unsuitable for direct LS-TTL interface; better for 3.3 V–5 V mixed systems. | Select only if system uses CMOS-only signaling and requires wider voltage flexibility. |
Compared with SN74ACT32DR and 74VHC32M, the MC74ACT32DTEL uniquely balances TTL input compatibility, 24 mA drive, and TSSOP-14 space efficiency-making it optimal for new industrial PCBs where legacy interface and compact layout are both mandatory.
Availability
MC74ACT32DTEL is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, automotive body control modules, and test equipment signal conditioning requiring stable component supply and long-term lifecycle support.
Supply support for MC74ACT32DTEL 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 silicon solutions for automotive, industrial, cloud, and IoT applications.
The MC74ACT32DTEL belongs to the 74ACT logic family, designed specifically for high-speed, TTL-compatible 5 V digital interfacing in industrial and automotive control systems where reliability and noise immunity are critical.
FAQ
What logic family does the MC74ACT32DTEL belong to, and how does it differ from standard 74AC devices?
The MC74ACT32DTEL belongs to the 74ACT (Advanced CMOS TTL-compatible) family. Unlike 74AC devices that operate from 2.0–6.0 V and have CMOS input thresholds, the MC74ACT32DTEL is specified only for 4.5–5.5 V and features TTL-compatible inputs (VIH ≥ 2.0 V, VIL ≤ 0.8 V), enabling direct interface with legacy TTL outputs. This distinction makes the MC74ACT32DTEL suitable where true TTL signal levels must be accepted without level translation.
Can the MC74ACT32DTEL operate at 3.3 V supply?
No, the MC74ACT32DTEL is not rated for 3.3 V operation. Its recommended operating supply is strictly 4.5–5.5 V, and its TTL-compatible input thresholds are defined only within that range. Attempting to power the MC74ACT32DTEL at 3.3 V may result in undefined logic states, excessive ICC, or failure to recognize valid high-level inputs. For 3.3 V systems, consider 74LVC32 or 74AHC32 instead.
What is the maximum capacitive load the MC74ACT32DTEL can drive while maintaining specified propagation delay?
The MC74ACT32DTEL's AC characteristics-including 10.0 ns max tPLH/tPHL-are specified at CL = 50 pF. Driving loads significantly above 50 pF will increase propagation delay nonlinearly and may degrade edge rates. For loads >75 pF, designers should verify timing margins in-system or add buffer stages. The 20 pF CPD value also indicates typical dynamic loading contribution per gate.
Does the MC74ACT32DTEL have built-in ESD protection, and what is its rating?
Yes, the MC74ACT32DTEL includes standard CMOS input protection diodes. Per the datasheet's absolute maximum ratings, it withstands ±20 mA DC input current per pin and operates safely with input voltages from –0.5 V to VCC + 0.5 V. While not explicitly rated per HBM or CDM standards in this revision, its construction aligns with typical onsemi 74ACT devices offering ≥2 kV HBM ESD tolerance-sufficient for standard handling in controlled environments.
Is the MC74ACT32DTEL pinout identical to other 74-series OR gate packages like SOIC-14 or PDIP-14?
Yes, the MC74ACT32DTEL follows the industry-standard 14-pin dual-in-line pinout for quad 2-input OR gates: pins 1–2–3 (Gate 1), 4–5–6 (Gate 2), 8–9–10 (Gate 3), 11–12–13 (Gate 4), with GND at pin 7 and VCC at pin 14. This pin compatibility extends across SOIC-14 (MC74ACT32D), PDIP-14 (MC74ACT32N), and TSSOP-14 (MC74ACT32DTEL), enabling footprint interchangeability where package height and thermal constraints allow.
MC74ACT32DTEL 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:
- -
MC74ACT32DTEL FAQ
1.How can I place an order for MC74ACT32DTEL through Aetrix?
Please submit a Request for Quotation (RFQ) for MC74ACT32DTEL 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 MC74ACT32DTEL reliable?
The price and inventory of MC74ACT32DTEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC74ACT32DTEL is usually 5 days.
3.What payment methods are accepted for MC74ACT32DTEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC74ACT32DTEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC74ACT32DTEL?
MC74ACT32DTEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC74ACT32DTEL 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 MC74ACT32DTEL?
For technical support, including MC74ACT32DTEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC74ACT32DTEL requirements.
6.How does Aetrix verify that MC74ACT32DTEL is sourced from the original manufacturer or authorized distributors?
All MC74ACT32DTEL 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 MC74ACT32DTEL meets industry standards.
7.What is the process for return or replacement of MC74ACT32DTEL?
All MC74ACT32DTEL units undergo pre-shipment inspection (PSI). If there is an issue with MC74ACT32DTEL, 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 MC74ACT32DTEL part is unused and in its original packaging.
Return procedure for MC74ACT32DTEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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