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onsemi 74AC32SJX
- Part No.:
- 74AC32SJX
- Manufacturer:
- onsemi
- Category:
- Gates and Inverters
- Package:
- 14-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
74AC32SJX.pdf
- Description:
- IC GATE OR 4CH 2-INP 14SOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,217
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Product details
Overview
74AC32SJX from onsemi is a quad 2-input OR gate logic IC in 14-lead SOP (EIAJ TYPE II, 5.3mm wide) package, operating at 2.0–6.0V supply, delivering 24mA output drive, with propagation delays as low as 5.0ns (tPLH/tPHL @ 5V, CL=50pF), and specified for –40°C to +85°C industrial temperature range. It serves as a fundamental combinational logic building block in digital control, interface buffering, and signal conditioning circuits.
For engineers reviewing the 74AC32SJX datasheet, pinout, applications, or equivalent options, key selection criteria include its AC-family CMOS input thresholds, rail-to-rail output swing, low ICC quiescent current (≤20µA @ 5.5V), and compatibility with 3.3V/5V mixed-signal systems requiring fast, noise-immune OR logic.
Technical Context
The 74AC32SJX implements four independent 2-input OR gates using advanced AC CMOS technology, providing TTL-compatible output levels while maintaining CMOS input impedance and low power consumption. Its input voltage thresholds scale with VCC (VIH = 2.1V min @ 3.0V, 3.15V @ 4.5V), enabling robust operation across 3.3V and 5V domains.
Each gate features symmetrical propagation delay (tPLH ≈ tPHL), guaranteed 24mA sink/source capability at VOH/VOL limits, and dynamic output current support up to ±75mA for transient load handling. The device meets JEDEC MS-001 and EIAJ TYPE II mechanical standards and is lead-free per J-STD-020B.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | Quad 2-input OR gate - provides four independent Boolean OR operations in one package |
| Supply Voltage Range | 2.0V to 6.0V - supports direct interfacing with both 3.3V and 5V logic families without level shifters |
| Propagation Delay | 5.0ns typical (tPHL/tPLH @ 5V, CL=50pF) - enables use in high-speed control paths up to ~100MHz toggle rate |
| Output Drive | ±24mA - sufficient to directly drive LEDs, small MOSFET gates, or multiple 74-series inputs without buffers |
| Quiescent ICC | ≤20µA @ 5.5V - ensures minimal static power draw in battery-backed or low-power standby modes |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade embedded controllers, motor drives, and instrumentation |
| Input Capacitance | 4.5pF - low capacitive loading preserves signal integrity and reduces fanout-induced delay skew |
Pinout & Package
74AC32SJX uses a 14-lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm wide body, with standard dual-in-line pin spacing (1.27mm pitch) and gull-wing leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 4, 5, 8, 9, 11, 12 | Input (A1/B1, A2/B2, A3/B3, A4/B4) | Four pairs of OR gate inputs; CMOS-compatible, high-impedance, VIH/VIL scaling with VCC |
| 3, 6, 10, 13 | Output (Y1, Y2, Y3, Y4) | Active-high OR outputs; rail-to-rail swing, ±24mA drive, 0.1V/4.4V VOL/VOH @ 5V |
| 7 | GND | Ground reference for all logic and power terminals; must be low-impedance connection |
| 14 | VCC | Positive supply (2.0–6.0V); decoupling capacitor (0.1µF) required adjacent to pin |
Key Features
| Feature | Design Value |
|---|---|
| Low ICC Quiescent Current | Reduces system standby power by >50% vs. older 74HC/74LS families - critical for always-on edge nodes |
| 24mA Output Sink/Source | Eliminates need for external driver transistors in LED indicators, relay drivers, or bus arbitration logic |
| Scalable Input Thresholds | VIH/VIL track VCC (e.g., VIH = 2.1V @ 3.0V, 3.15V @ 4.5V), ensuring reliable switching across mixed-voltage designs |
| High-Speed Propagation | 5.0ns typical delay @ 5V enables real-time response in timing-critical control loops and state-machine transitions |
| JEDEC-Compliant Packaging | EIAJ TYPE II SOP footprint ensures compatibility with standard SMT assembly lines and IPC-7351 land patterns |
Applications
| Industrial PLC I/O Expansion | Automotive Body Control Module |
|---|---|
Use Scenario: Combining multiple sensor fault signals into a single OR'd alarm line for watchdog monitoring. IC Role / Device Role / Timing Role: Combinational logic aggregator - performs real-time logical OR of up to four independent digital inputs. Use Value: Enables single-wire fault reporting without microcontroller intervention, reducing firmware overhead and improving fail-safe response time. |
Use Scenario: Merging door-open, trunk-open, and hood-open status signals to trigger interior lighting activation. IC Role / Device Role / Timing Role: Discrete-level OR logic element - operates independently of MCU clock, ensuring immediate lamp turn-on upon any event. Use Value: Provides deterministic, zero-latency response (<10ns worst-case) unaffected by software interrupts or CPU load. |
| Medical Device Power Sequencing | Test Equipment Signal Conditioning |
Use Scenario: Validating that all pre-charge conditions are met before enabling main power rails in infusion pump power management. IC Role / Device Role / Timing Role: Safety interlock logic gate - asserts enable signal only when all upstream conditions are HIGH. Use Value: Adds hardware-enforced redundancy to sequencing logic, meeting IEC 62304 Class B safety requirements without FPGA or CPLD. |
Use Scenario: OR-ing multiple channel-ready flags in automated test equipment to indicate overall system readiness. IC Role / Device Role / Timing Role: Parallel status combiner - synchronizes asynchronous channel completion signals into a unified go/no-go indicator. Use Value: Reduces PCB routing complexity versus discrete diode-OR networks and avoids voltage drop issues inherent in passive solutions. |
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 |
|---|---|---|---|
| 74HC32PW,118 (Nexperia) | Slower propagation (19ns @ 4.5V), lower drive (±5.2mA), wider VCC range (2–6V), higher input capacitance (10pF) | Better suited for ultra-low-power, low-speed control where timing margin is ample and drive demand is minimal | Select when minimizing BOM count across HC-family logic and cost is prioritized over speed/power trade-off |
| SN74LVC32APWR (TI) | 3.3V-only operation (1.65–3.6V), faster (3.7ns @ 3.3V), higher drive (±24mA), smaller TSSOP-14 package (4.4mm) | Optimized for modern 3.3V-only digital systems; not compatible with 5V interfaces or legacy 5V backplanes | Choose for new 3.3V designs requiring space savings and lowest possible delay, but verify VCC domain compatibility |
Compared with 74AC32SJX, the 74HC32PW offers lower cost and broader voltage tolerance but sacrifices speed and drive strength, while the SN74LVC32APWR delivers superior performance in 3.3V systems yet lacks 5V interoperability - making 74AC32SJX the optimal choice for mixed-voltage industrial control where 5V legacy integration and balanced speed/power are required.
Availability
74AC32SJX is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, automotive body control modules, and medical device power sequencing requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across temperature extremes.
Supply support for 74AC32SJX 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 electronics, delivering silicon solutions for automotive, industrial, cloud, medical, and IoT applications.
The 74AC32SJX belongs to onsemi's legacy AC logic family, engineered for high-speed, low-power, mixed-voltage digital interfacing in industrial and automotive control systems where reliability and parametric consistency are critical.
FAQ
What is the maximum supply voltage rating for the 74AC32SJX?
The 74AC32SJX has an absolute maximum supply voltage (VCC) rating of +7.0V, but its recommended operating range is 2.0V to 6.0V. Operation above 6.0V risks exceeding safe DC electrical limits and may degrade long-term reliability. For sustained use, maintain VCC within the recommended range - 74AC32SJX is not rated for 7V continuous operation despite the absolute maximum specification.
Does the 74AC32SJX support 3.3V logic levels with full DC specifications?
Yes, the 74AC32SJX fully supports 3.3V operation with guaranteed DC parameters: VIH = 2.1V min, VOL = 0.1V max at 12mA, and VOH = 2.9V min at –12mA when VCC = 3.0V. These values are explicitly specified in the datasheet's "DC Electrical Characteristics for AC" table, confirming robust interoperability with 3.3V LVTTL and LVCMOS systems - 74AC32SJX does not require external level translation in such applications.
Is the 74AC32SJX pin-compatible with the 74ACT32SJX?
Yes, the 74AC32SJX and 74ACT32SJX share identical pinouts, package dimensions, and terminal assignments - both use the M14D SOP package with 14 leads and identical pin functions (An/Bn inputs, On outputs, VCC, GND). However, their input thresholds differ: 74ACT32SJX has fixed TTL-compatible VIH/VIL (2.0V/0.8V), while 74AC32SJX scales with VCC. So while physically interchangeable, functional behavior differs in mixed-voltage contexts - 74AC32SJX remains the correct choice for scalable threshold applications.
What is the thermal performance limit of the 74AC32SJX in continuous operation?
The 74AC32SJX has a maximum junction temperature (TJ) rating of 140°C and a storage temperature range of –65°C to +150°C. Under continuous operation at TA = +85°C and full output loading, its thermal resistance (θJA) in the M14D SOP package is approximately 120°C/W. To ensure reliability, keep power dissipation below 420mW (calculated as (140°C − 85°C)/120°C/W), which corresponds to typical dynamic loading - 74AC32SJX is designed for industrial ambient conditions without forced cooling.
Can the 74AC32SJX drive a 50pF capacitive load with guaranteed timing?
Yes, the 74AC32SJX AC Electrical Characteristics are explicitly tested and guaranteed with CL = 50pF, including tPLH/tPHL delays of 5.0ns typical and 8.5ns max at VCC = 5.0V. This load condition reflects standard PCB trace and input capacitance of downstream devices. Driving heavier loads (>50pF) will increase propagation delay nonlinearly and may require buffer staging - 74AC32SJX's 24mA drive strength supports moderate capacitive loads but is not intended for transmission-line driving.
74AC32SJX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 74AC
- Package/Case:
- 14-SOIC (0.209", 5.30mm Width)
- Packaging:
- Tape & Reel (TR)
- 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-SOP
74AC32SJX FAQ
1.How can I place an order for 74AC32SJX through Aetrix?
Please submit a Request for Quotation (RFQ) for 74AC32SJX 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 74AC32SJX reliable?
The price and inventory of 74AC32SJX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AC32SJX is usually 5 days.
3.What payment methods are accepted for 74AC32SJX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AC32SJX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74AC32SJX?
74AC32SJX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74AC32SJX 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 74AC32SJX?
For technical support, including 74AC32SJX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AC32SJX requirements.
6.How does Aetrix verify that 74AC32SJX is sourced from the original manufacturer or authorized distributors?
All 74AC32SJX 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 74AC32SJX meets industry standards.
7.What is the process for return or replacement of 74AC32SJX?
All 74AC32SJX units undergo pre-shipment inspection (PSI). If there is an issue with 74AC32SJX, 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 74AC32SJX part is unused and in its original packaging.
Return procedure for 74AC32SJX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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