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onsemi MC74AC32MR1
- Part No.:
- MC74AC32MR1
- Manufacturer:
- onsemi
- Category:
- Gates and Inverters
- Package:
- -
- Datasheet:
-
MC74AC32MR1.pdf
- Description:
- IC GATE OR
- Quantity:
- Payment:
- Shipping:
Inventory:9,000
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Product details
Overview
MC74AC32MR1 from onsemi is a quad 2-input OR gate IC in EIAJ-14 (SOIC-14) package, operating at 2.0–6.0 V supply, delivering ±24 mA output drive, with propagation delays as low as 1.5 ns at 5.0 V and 50 pF load, used in high-speed digital logic interfacing and level translation in industrial control systems.
For engineers reviewing the MC74AC32MR1 datasheet, pinout, applications, or equivalent options, key selection criteria include supply voltage range (2.0–6.0 V), output drive capability (±24 mA), AC performance (tPLH/tPHL ≤ 8.5 ns over temperature), input compatibility (CMOS-level thresholds), and EIAJ-14 package footprint.
Technical Context
The MC74AC32MR1 implements four independent 2-input OR gates using advanced CMOS technology, supporting rail-to-rail input voltage operation (−0.5 V to VCC + 0.5 V) and guaranteed switching down to 2.0 V supply. It features TTL-compatible input thresholds only in the ′ACT variant-not applicable to MC74AC32MR1.
Its AC characteristics are specified at CL = 50 pF and VCC = 3.3 V or 5.0 V, with propagation delays tightly bounded across −40°C to +85°C ambient. Quiescent supply current remains below 40 µA at VCC = 5.5 V, enabling low-static-power logic integration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | Quad 2-input OR gate - provides four independent Boolean OR operations per device |
| Supply Voltage Range | 2.0 V to 6.0 V - supports mixed-voltage system interfacing and battery-backed operation |
| Output Drive | ±24 mA - sufficient to directly drive LEDs, small MOSFET gates, or multiple 74AC inputs |
| Propagation Delay | 1.5 ns (typ) / 8.5 ns (max) at VCC = 5.0 V, CL = 50 pF - enables >100 MHz toggle rates in clean layouts |
| Input Thresholds | VIH = 2.1 V (min), VIL = 0.9 V (max) at VCC = 3.0 V - ensures robust noise margin in 3.3 V systems |
| Quiescent ICC | ≤40 µA at VCC = 5.5 V - minimizes standby power in always-on logic subsystems |
| Input Capacitance | 4.5 pF - limits capacitive loading on driving sources and preserves signal edge integrity |
Pinout & Package
EIAJ-14 (SOIC-14) package, 3.9 mm × 8.7 mm body, 1.27 mm pitch, gull-wing leads, JEDEC MS-012 compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 4, 5, 8, 9, 11, 12 | Input A/B of OR gates | Dual inputs per gate; all inputs tolerate −0.5 V to VCC + 0.5 V; no internal clamps |
| 3, 6, 10, 13 | OR Gate Output | Push-pull CMOS outputs; sink/source up to ±24 mA; rail-to-rail swing |
| 7 | GND | Ground reference for all I/O and internal circuitry; must be low-impedance |
| 14 | VCC | Positive supply; decoupling capacitor (0.1 µF ceramic) required within 10 mm |
Key Features
| Feature | Design Value |
|---|---|
| High-Speed Operation | Propagation delay ≤ 8.5 ns over full temperature and voltage range - enables timing-critical combinatorial paths |
| Wide Supply Range | 2.0 V to 6.0 V operation - allows direct interface between 3.3 V controllers and 5 V peripherals without level shifters |
| High Output Drive | ±24 mA per output - eliminates need for external buffer stages when driving moderate capacitive loads or parallel inputs |
| Low Input Leakage | ±1.0 µA max at VCC = 5.5 V - prevents unintended logic state changes in high-impedance or battery-powered nodes |
| Low Power Dissipation | CPD = 20 pF - reduces dynamic power consumption in high-frequency clock distribution or data path logic |
Applications
| Industrial PLC I/O Expansion | Automotive Body Control Module Logic |
|---|---|
|
Use Scenario: Adding discrete OR logic to combine fault signals from multiple sensors before feeding into a microcontroller interrupt line. IC Role / Device Role / Timing Role: Combinatorial signal aggregation with sub-10 ns latency to preserve real-time fault response. Use Value: Eliminates software polling overhead and ensures hardware-level priority resolution without MCU involvement. |
Use Scenario: Enabling redundant wake-up detection by OR-ing door-open, key-fob RF, and ignition-switch signals in a BCM. IC Role / Device Role / Timing Role: Low-latency, supply-tolerant logic gate ensuring wake event registration within 100 ns of any input assertion. Use Value: Guarantees immediate system wake-up even under brown-out conditions (down to 2.0 V VCC). |
| Medical Instrument Status Monitoring | Test Equipment Signal Conditioning |
|
Use Scenario: Monitoring multiple safety interlock switches (cover open, overtemp, motion detected) to assert a global "SAFE = FALSE" flag. IC Role / Device Role / Timing Role: Fail-safe combinatorial logic with guaranteed VIH/VIL margins across temperature and supply variation. Use Value: Meets IEC 62304 Class C requirement for deterministic hardware-based safety logic without software dependency. |
Use Scenario: Combining pass/fail outputs from multiple analog comparator channels into a single digital pass indicator for automated test fixtures. IC Role / Device Role / Timing Role: High-speed, low-skew OR function synchronizing results from parallel measurement paths. Use Value: Reduces fixture cycle time by enabling single-cycle pass/fail decision instead of sequential polling. |
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 |
|---|---|---|---|
| SN74AC32DR | Same logic function, identical AC/DC specs, SOIC-14 package, but TI-marked and shipped in tape-and-reel (2500 pcs) | No functional difference; validated for drop-in replacement in existing PCBs designed for MC74AC32MR1 | Preferred for high-volume automated assembly where reel packaging and TI supply chain alignment are advantageous |
| 74VHC32M | Higher VCC max (7.0 V), lower IOL (±8 mA), slower tPHL (13 ns max at 5 V), same SOIC-14 footprint | Not suitable for 24 mA drive or sub-10 ns timing paths; acceptable only in low-power, low-speed legacy upgrades | Select only when strict 7.0 V tolerance is required and drive/speed demands are relaxed |
Compared with SN74AC32DR and 74VHC32M, the MC74AC32MR1 delivers superior output drive and speed while maintaining full compatibility with standard SOIC-14 layouts-making it optimal for new designs requiring robust, high-performance OR logic without redesign.
Availability
MC74AC32MR1 is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, automotive body control modules, medical instrument status monitoring, and test equipment signal conditioning requiring stable component supply and long-term production continuity.
Supply support for MC74AC32MR1 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, analog, sensor, and logic solutions for automotive, industrial, and cloud infrastructure markets.
The MC74AC32MR1 belongs to the 74AC logic family, engineered for high-speed, low-power CMOS operation across wide supply ranges-targeting applications demanding reliable, pin-compatible logic in harsh or mixed-voltage environments.
FAQ
What logic family does the MC74AC32MR1 belong to, and how does it differ from 74ACT variants?
The MC74AC32MR1 belongs to the 74AC (Advanced CMOS) logic family. It differs from 74ACT variants in input threshold levels: MC74AC32MR1 uses CMOS-compatible VIH/VIL (e.g., 2.1 V/0.9 V at 3.0 V), whereas 74ACT devices feature TTL-compatible inputs (VIH = 2.0 V, VIL = 0.8 V at 5.0 V). The MC74AC32MR1 is not TTL-input compatible. Its AC performance and drive strength remain identical across both families.
What is the maximum operating temperature range for the MC74AC32MR1?
The MC74AC32MR1 is rated for operation from −40°C to +85°C ambient temperature. This range is guaranteed per the Recommended Operating Conditions table in the official datasheet, with all DC and AC parameters fully specified across this interval. Junction temperature must not exceed 140°C under worst-case power dissipation and board thermal design.
Can the MC74AC32MR1 operate reliably at 3.3 V supply voltage?
Yes, the MC74AC32MR1 operates reliably at 3.3 V. Its recommended VCC range includes 3.0 V to 6.0 V, and all key parameters-including VOH ≥ 2.9 V, VOL ≤ 0.1 V, and tPLH/tPHL ≤ 9.0 ns-are guaranteed at VCC = 3.3 V ±0.3 V with CL = 50 pF. Input thresholds scale proportionally, providing adequate noise margin in 3.3 V systems.
Does the MC74AC32MR1 have built-in ESD protection diodes on its inputs?
No, the MC74AC32MR1 does not integrate input ESD protection diodes. Its absolute maximum input voltage rating is −0.5 V to VCC + 0.5 V, and exceeding these limits risks latch-up or permanent damage. External series resistors (e.g., 100 Ω) and/or TVS diodes are recommended for I/O lines exposed to connectors or cables outside the controlled PCB environment.
What package type is used for the MC74AC32MR1, and what are its key mechanical dimensions?
The MC74AC32MR1 uses the EIAJ-14 package, equivalent to SOIC-14 with gull-wing leads. Its body measures 3.9 mm × 8.7 mm, lead pitch is 1.27 mm, and total height is 1.75 mm max. It complies with JEDEC MS-012 and is compatible with standard SOIC-14 footprints and reflow profiles, including IPC/JEDEC J-STD-020 moisture sensitivity level MSL3.
MC74AC32MR1 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:
- -
MC74AC32MR1 FAQ
1.How can I place an order for MC74AC32MR1 through Aetrix?
Please submit a Request for Quotation (RFQ) for MC74AC32MR1 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 MC74AC32MR1 reliable?
The price and inventory of MC74AC32MR1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC74AC32MR1 is usually 5 days.
3.What payment methods are accepted for MC74AC32MR1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC74AC32MR1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC74AC32MR1?
MC74AC32MR1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC74AC32MR1 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 MC74AC32MR1?
For technical support, including MC74AC32MR1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC74AC32MR1 requirements.
6.How does Aetrix verify that MC74AC32MR1 is sourced from the original manufacturer or authorized distributors?
All MC74AC32MR1 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 MC74AC32MR1 meets industry standards.
7.What is the process for return or replacement of MC74AC32MR1?
All MC74AC32MR1 units undergo pre-shipment inspection (PSI). If there is an issue with MC74AC32MR1, 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 MC74AC32MR1 part is unused and in its original packaging.
Return procedure for MC74AC32MR1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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