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onsemi 74AC32SC_NL
- Part No.:
- 74AC32SC_NL
- Manufacturer:
- onsemi
- Category:
- Gates and Inverters
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
74AC32SC_NL.pdf
- Description:
- IC GATE OR 4CH 2-INP 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,881
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Product details
Overview
74AC32SC_NL from onsemi is a quad 2-input OR gate logic IC in 14-lead SOIC package, operating at 2.0–6.0V supply, with 7.5ns typical propagation delay (VCC = 5.0V), ±24mA output drive, and 4.5pF input capacitance. It performs basic Boolean OR logic for digital signal routing in industrial control and instrumentation systems.
For engineers reviewing the 74AC32SC_NL datasheet, pinout, applications, or equivalent options, key selection criteria include VCC range compatibility, output current capability, propagation delay under load, input threshold levels, and SOIC-14 thermal and layout constraints.
Technical Context
The 74AC32SC_NL implements four independent 2-input OR gates using advanced CMOS technology, delivering rail-to-rail output swing and TTL-compatible voltage thresholds only in ACT variants - this AC variant uses CMOS input thresholds (VIH = 2.1V min @ VCC = 4.5V). It supports mixed-voltage interfacing across 3.3V and 5V logic domains.
Designed for low static power, it draws ≤20µA ICC (max) at VCC = 5.5V and TA = –40°C to +85°C, while maintaining high noise immunity via 0.9V/2.1V input hysteresis margins and 0.44V VOL (max) at IOL = 24mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | Four independent 2-input OR gates - enables parallel Boolean sum operations without inter-gate coupling. |
| Supply Voltage Range | 2.0V to 6.0V - supports direct interface with 3.3V and 5V systems without level shifters. |
| Propagation Delay | 7.5ns typical (tPLH/tPHL, VCC = 5.0V, CL = 50pF) - ensures timing predictability in synchronous control paths. |
| Output Drive | ±24mA per output - drives multiple 74-series inputs or small LEDs without external buffers. |
| Input Capacitance | 4.5pF - minimizes capacitive loading on upstream drivers and preserves edge integrity. |
| Quiescent ICC | 20µA max @ VCC = 5.5V - reduces standby power in battery-backed or energy-sensitive modules. |
Pinout & Package
74AC32SC_NL is housed in a 14-lead SOIC package (JEDEC MS-012, 0.150" narrow body), with standard dual-in-line pin spacing and gull-wing leads suitable for reflow soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 4, 5, 8, 9, 11, 12 | Input (A1/B1, A2/B2, A3/B3, A4/B4) | Eight total inputs assigned to four OR gates - each pair feeds one gate's logical sum path. |
| 3, 6, 10, 13 | Output (Y1–Y4) | Active-high CMOS outputs - swing rail-to-rail and source/sink up to 24mA. |
| 7 | GND | Ground reference for all logic and power return paths - requires low-impedance PCB plane connection. |
| 14 | VCC | Positive supply input - must be decoupled locally with 0.1µF ceramic capacitor near pin. |
Key Features
| Feature | Design Value |
|---|---|
| Low ICC consumption | Reduces system-level quiescent current by ≥50% versus older 74HC logic families - critical for always-on monitoring nodes. |
| High-output drive | ±24mA per output enables fan-out of ≥10 74AC inputs or direct LED driving without series resistors in low-current cases. |
| Wide VCC range | 2.0–6.0V operation allows single-part deployment across 3.3V microcontroller peripherals and legacy 5V backplanes. |
| CMOS input thresholds | VIH/VIL track VCC proportionally (e.g., VIH = 2.1V min @ 4.5V) - improves noise margin in noisy industrial environments. |
Applications
| Industrial PLC I/O Expansion | Automotive Body Control Module |
|---|---|
Use Scenario: Adding discrete OR logic to combine multiple sensor fault signals into a single alarm line before MCU interrupt input. IC Role / Device Role / Timing Role: Level-shifting, wired-OR aggregation node with deterministic sub-10ns delay and no added jitter. Use Value: Eliminates need for software polling or additional GPIOs; maintains fail-safe response time under worst-case temperature and voltage. | Use Scenario: Merging door-open, trunk-open, and hood-open status signals into a unified "vehicle access" indicator for dashboard display logic. IC Role / Device Role / Timing Role: Combinational logic gate providing immediate hardware-level OR summation with no propagation latency impact on safety-critical alerts. Use Value: Ensures real-time visibility of any open-access condition without MCU intervention or firmware overhead. |
| Test Equipment Signal Routing | Medical Diagnostic Device Interface |
Use Scenario: Enabling multi-channel trigger arbitration in automated test equipment where any of four channel-ready signals activates a common capture strobe. IC Role / Device Role / Timing Role: High-speed OR combiner with matched tPLH/tPHL ensuring symmetrical setup/hold timing for downstream latches. Use Value: Guarantees consistent trigger alignment across channels, reducing measurement skew in time-domain analysis. | Use Scenario: Combining multiple patient-sensor timeout flags (ECG lead-off, SpO₂ probe disconnect, NIBP cuff error) into a unified "sensor integrity" warning bus. IC Role / Device Role / Timing Role: Fail-operational logic element that remains functional across full medical-grade temperature range (–40°C to +85°C). Use Value: Provides hardware-enforced redundancy for critical alarm paths, independent of host processor availability or reset state. |
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 |
|---|---|---|---|
| 74HC32DR2G | Higher propagation delay (19ns typ @ 4.5V), lower drive (±4mA), narrower VCC range (2.0–6.0V same, but VOH degrades below 4.5V) | Less suitable for 3.3V-driven loads requiring >8mA sink; acceptable for low-speed glue logic | Select when cost sensitivity outweighs speed/power trade-offs and drive requirements are minimal. |
| SN74LVC32APWR | 3.3V-only VCC (1.65–3.6V), 3.5ns delay (typ), ±24mA drive, 5V-tolerant inputs | Requires level translation for 5V systems; superior for modern low-voltage FPGA/CPU I/O expansion | Prefer for new 3.3V designs needing faster timing and guaranteed 5V-tolerant inputs without external clamps. |
Compared with 74AC32SC_NL, 74HC32DR2G offers lower cost but sacrifices speed and drive strength, while SN74LVC32APWR delivers higher performance in 3.3V domains but lacks native 5V operation - making 74AC32SC_NL the optimal choice for mixed-voltage industrial interfaces requiring proven reliability and wide supply flexibility.
Availability
74AC32SC_NL is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, automotive body control modules, and test equipment signal routing requiring stable component supply, long-term lifecycle support, and JEDEC-compliant SOIC packaging.
Supply support for 74AC32SC_NL 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 focused on energy-efficient innovation for automotive, industrial, cloud, and medical applications.
The 74AC32SC_NL belongs to the Advanced CMOS (AC) logic family, engineered for high-speed, low-power digital interfacing in harsh environments with wide supply tolerance and robust ESD immunity.
FAQ
What is the maximum operating temperature range for the 74AC32SC_NL?
The 74AC32SC_NL is rated for operation from –40°C to +85°C ambient temperature, matching industrial-grade requirements. This range is validated across all electrical specifications including propagation delay, VOH/VOL, and ICC limits - no derating is required within this span. The 74AC32SC_NL junction temperature must not exceed 140°C under continuous operation.
Does the 74AC32SC_NL support 3.3V logic systems?
Yes, the 74AC32SC_NL fully supports 3.3V operation with guaranteed performance: VIH = 1.5V min (at VCC = 3.0V), VOL = 0.1V max at IOL = 12mA, and tPLH/tPHL = 9.0ns max (CL = 50pF). Its 2.0–6.0V supply range makes it interoperable with both 3.3V and 5V logic families without level shifters.
Is the 74AC32SC_NL pin-compatible with the 74ACT32SC?
No - while both share identical SOIC-14 pinouts and logic function, the 74AC32SC_NL has CMOS-compatible input thresholds (VIH ∝ VCC), whereas the 74ACT32SC uses fixed TTL thresholds (VIH = 2.0V min). Swapping them may cause logic errors in mixed-voltage systems unless input signal levels are verified against respective VIH/VIL specs.
What decoupling is recommended for the 74AC32SC_NL VCC pin?
A 0.1µF X7R ceramic capacitor placed within 2mm of the 74AC32SC_NL VCC and GND pins is mandatory to suppress high-frequency switching noise. For boards with multiple 74AC32SC_NL devices, add a bulk 4.7µF tantalum or aluminum electrolytic capacitor per power rail segment to stabilize low-frequency droop during simultaneous output transitions.
Can the 74AC32SC_NL drive LEDs directly?
Yes - with its ±24mA output capability, the 74AC32SC_NL can drive standard 2mA–10mA indicator LEDs directly when configured as a low-side switch (anode to VCC, cathode to output). For 20mA LEDs, use a series resistor calculated as R = (VCC − 1.8V)/20mA (e.g., 160Ω @ VCC = 5V); do not exceed 24mA absolute maximum per output to avoid latch-up or parametric shift.
74AC32SC_NL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 74AC
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Logic Type:
- OR 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:
- 7.5ns @ 5V, 50pF
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
74AC32SC_NL FAQ
1.How can I place an order for 74AC32SC_NL through Aetrix?
Please submit a Request for Quotation (RFQ) for 74AC32SC_NL 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 74AC32SC_NL reliable?
The price and inventory of 74AC32SC_NL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AC32SC_NL is usually 5 days.
3.What payment methods are accepted for 74AC32SC_NL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AC32SC_NL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74AC32SC_NL?
74AC32SC_NL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74AC32SC_NL 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 74AC32SC_NL?
For technical support, including 74AC32SC_NL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AC32SC_NL requirements.
6.How does Aetrix verify that 74AC32SC_NL is sourced from the original manufacturer or authorized distributors?
All 74AC32SC_NL 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 74AC32SC_NL meets industry standards.
7.What is the process for return or replacement of 74AC32SC_NL?
All 74AC32SC_NL units undergo pre-shipment inspection (PSI). If there is an issue with 74AC32SC_NL, 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 74AC32SC_NL part is unused and in its original packaging.
Return procedure for 74AC32SC_NL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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