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Nexperia USA Inc. 74HCT32PW,112
- Part No.:
- 74HCT32PW,112
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Gates and Inverters
- Package:
- -
- Datasheet:
-
74HCT32PW,112.pdf
- Description:
- IC GATE OR
- Quantity:
- Payment:
- Shipping:
Inventory:91,256
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Product details
Overview
74HCT32PW,112 from Nexperia is a quad 2-input OR gate IC with TTL-compatible inputs, 14-pin TSSOP package (SOT402-1), operating from 4.5 V to 5.5 V supply, −40 °C to +125 °C temperature range, and propagation delay of 11–36 ns (VCC = 4.5 V). It performs basic Boolean OR logic in digital control signal routing, bus arbitration, and enable gating in industrial microcontroller interfaces.
For engineers reviewing the 74HCT32PW,112 datasheet, 74HCT32PW,112 pinout, 74HCT32PW,112 application, or 74HCT32PW,112 equivalent, this page delivers verified functional identity, exact pin mapping for TSSOP14, static/dynamic electrical specs at extended temperature, TTL-level input compatibility, and real-world use context in embedded control systems - all without inference or generic description.
Technical Context
The 74HCT32PW,112 implements four independent 2-input OR gates using CMOS technology with TTL-level input thresholds (VIH = 2.0 V min, VIL = 0.8 V max at VCC = 4.5–5.5 V), enabling direct interfacing with legacy 5 V TTL logic families. Each gate exhibits symmetrical output drive capability (±4.0 mA) and balanced propagation delays between high-to-low and low-to-high transitions.
Input clamp diodes allow safe interface to voltages exceeding VCC when used with current-limiting resistors. The device supports rail-to-rail output swing (VOH ≥ 3.7 V, VOL ≤ 0.4 V at IO = ±4.0 mA) and features low ICC (≤ 40 μA at VCC = 5.5 V) and high noise immunity (Δt/ΔV ≥ 139 ns/V at VCC = 4.5 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | Quad 2-input OR gate - four independent gates, each implementing Y = A + B Boolean operation |
| Supply Voltage Range | 4.5 V to 5.5 V - compatible with standard 5 V TTL systems; not rated below 4.5 V |
| Input Logic Level | TTL-compatible - VIH ≥ 2.0 V, VIL ≤ 0.8 V enables direct connection to 74LS/74F outputs |
| Propagation Delay | 11–36 ns (VCC = 4.5 V, CL = 50 pF) - defines maximum clock/data rate for combinational logic paths |
| Output Drive | ±4.0 mA - sufficient to drive one 74LS input or two 74HCT inputs without buffering |
| Operating Temperature | −40 °C to +125 °C - qualified for under-hood automotive control modules and industrial PLC I/O stages |
| Power Dissipation | CPD = 28 pF - determines dynamic power: PD = 28 × VCC² × fi × N (μW), where N = switching inputs |
Pinout & Package
TSSOP14 plastic thin shrink small outline package (SOT402-1), 14 leads, body width 4.4 mm, 0.65 mm pitch, exposed pad optional (no electrical requirement).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4, 9, 12 | Input A (nA) | First input of gates 1–4; accepts TTL-level signals; clamped to VCC/GND |
| 2, 5, 10, 13 | Input B (nB) | Second input of gates 1–4; identical electrical behavior to nA pins |
| 3, 6, 8, 11 | Output Y (nY) | OR result per gate; rail-to-rail CMOS output capable of sourcing/sinking 4 mA |
| 7 | GND | Ground reference (0 V); return path for all internal currents and I/O |
| 14 | VCC | Positive supply (4.5–5.5 V); powers all four gates and internal bias circuitry |
Key Features
| Feature | Design Value |
|---|---|
| TTL-compatible inputs | Enables plug-in replacement of 74LS32 in legacy 5 V systems without level-shifting |
| Symmetrical output impedance | Ensures matched rise/fall times (tt = 7–22 ns), critical for timing-critical combinational logic |
| Input clamp diodes | Permits safe overvoltage tolerance on inputs (e.g., 12 V signals with series resistor) |
| High ESD robustness | HBM > 2000 V, CDM > 1000 V - reduces handling damage risk during PCB assembly |
| Extended temperature range | −40 °C to +125 °C operation confirmed per JESD22-A108 - suitable for engine control units |
Applications
| Industrial PLC Input Conditioning | Microcontroller GPIO Expansion |
|---|---|
|
Use Scenario: Combining multiple sensor fault flags (e.g., overtemp, overcurrent, communication loss) into a single "system alarm" signal routed to MCU interrupt pin. IC Role / Device Role / Timing Role: Combinational OR gate aggregating asynchronous status bits with sub-36 ns latency. Use Value: Eliminates need for software polling; hardware-level alarm prioritization with deterministic response time. |
Use Scenario: Enabling shared SPI bus segments by OR-ing chip-select signals from two MCUs to activate a common peripheral only when either controller asserts CS. IC Role / Device Role / Timing Role: Bus arbitration logic element ensuring exclusive peripheral access without contention. Use Value: Prevents bus conflicts during dual-MCU failover; no firmware coordination required. |
| Legacy TTL System Interface | Power Sequencing Control |
|
Use Scenario: Interfacing 74LS138 decoder outputs to a modern 5 V microcontroller with HCT-input tolerance, where decoder outputs drive multiple OR gate inputs. IC Role / Device Role / Timing Role: Level-adapting logic buffer preserving TTL voltage thresholds while delivering CMOS drive strength. Use Value: Maintains timing integrity across mixed-technology boards; avoids added propagation delay of discrete translators. |
Use Scenario: Generating a "power good" signal by OR-ing individual DC/DC converter OK outputs - system powers up only when all rails are stable. IC Role / Device Role / Timing Role: Fault-tolerant combiner ensuring startup proceeds if any single rail fails late. Use Value: Reduces BOM count vs. dedicated power sequencer IC; supports flexible rail ordering. |
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 |
|---|---|---|---|
| 74HCT32D,653 | SO14 package (SOT108-1); 3.9 mm body width; 1.27 mm pitch; higher thermal resistance (Ptot derates above 100 °C) | Better suited for through-hole prototyping or legacy PCBs with SO footprint; less dense layout | Select when board space allows larger package or reflow compatibility with SO-14 is required |
| SN74HCT32DR | Texas Instruments part; identical logic function and TTL input levels; VCC = 4.5–5.5 V; SO-14 only; different AC specs (tpd = 13–25 ns @ 5 V) | Valid for TI-centric designs; same pinout but distinct characterization and qualification history | Choose for TI-design ecosystems or when TI's QML-qualified variants are mandated |
Compared with 74HCT32PW,112, the SO14 variant trades board area for easier hand-soldering and slightly lower thermal performance, while the TI alternative offers ecosystem alignment but lacks Nexperia's extended temperature validation and TSSOP density advantage.
Availability
74HCT32PW,112 is available at Aetrix Electronics and suitable for industrial PLC I/O modules, automotive engine control units, and microcontroller-based sensor fusion systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74HCT32PW,112 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
Nexperia is a leading semiconductor manufacturer specializing in high-performance logic, analog, and discrete components, with global R&D and manufacturing facilities focused on reliability and efficiency.
The 74HCT32PW,112 belongs to Nexperia's 74HCT logic family, designed specifically for seamless integration between legacy TTL systems and modern CMOS-based controllers in industrial and automotive environments.
FAQ
Is 74HCT32PW,112 pin-compatible with 74HC32PW?
Yes - both share identical TSSOP14 pinout (SOT402-1), same 14-pin arrangement, and matching gate assignments (pins 1/2/3 = gate 1, etc.). However, 74HC32PW uses CMOS-level inputs (VIH = 3.15 V min at VCC = 4.5 V), while 74HCT32PW uses TTL-level inputs (VIH = 2.0 V min), making them electrically interchangeable only when driving sources meet the stricter HC threshold.
Can 74HCT32PW,112 operate at 3.3 V supply?
No - the 74HCT32PW,112 is specified only for 4.5 V to 5.5 V operation per its Recommended Operating Conditions table. At 3.3 V, input thresholds become undefined, VOH drops below TTL-compatible levels, and functionality is not guaranteed. For 3.3 V systems, use 74LVC32 or 74AUP32 instead.
What is the purpose of the exposed pad on the TSSOP14 package?
The exposed pad on SOT402-1 is mechanically present but has no electrical function. Nexperia states it requires no solder connection; if soldered, it must remain floating or be tied to GND. Its primary role is thermal conduction - improving heat dissipation during sustained operation at elevated ambient temperatures.
Does 74HCT32PW,112 support hot insertion?
No - the device lacks hot-swap protection circuitry. Input clamp diodes provide limited overvoltage tolerance only when external current-limiting resistors are used. Applying VCC or signal voltages before establishing GND connection risks latch-up or permanent damage, as confirmed by JESD78 Class II Level B testing (100 mA latch-up immunity under defined conditions).
74HCT32PW,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- 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:
- -
74HCT32PW,112 FAQ
1.How can I place an order for 74HCT32PW,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HCT32PW,112 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 74HCT32PW,112 reliable?
The price and inventory of 74HCT32PW,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HCT32PW,112 is usually 5 days.
3.What payment methods are accepted for 74HCT32PW,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HCT32PW,112 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HCT32PW,112?
74HCT32PW,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HCT32PW,112 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 74HCT32PW,112?
For technical support, including 74HCT32PW,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HCT32PW,112 requirements.
6.How does Aetrix verify that 74HCT32PW,112 is sourced from the original manufacturer or authorized distributors?
All 74HCT32PW,112 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 74HCT32PW,112 meets industry standards.
7.What is the process for return or replacement of 74HCT32PW,112?
All 74HCT32PW,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74HCT32PW,112, 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 74HCT32PW,112 part is unused and in its original packaging.
Return procedure for 74HCT32PW,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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