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Nexperia USA Inc. 74HCT32DB,112
- Part No.:
- 74HCT32DB,112
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Gates and Inverters
- Package:
- 14-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
74HCT32DB,112.pdf
- Description:
- IC GATE OR 4CH 2-INP 14SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,072
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Product details
Overview
74HCT32DB,112 from Nexperia is a quad 2-input OR gate logic IC with TTL-compatible inputs, 4.5 V to 5.5 V supply range, -40 °C to +125 °C operating temperature, and SO14 (SOT108-1) package. It delivers symmetrical output impedance, balanced propagation delays (11–36 ns), and high noise immunity for digital signal combining in industrial control and embedded interface circuits.
For engineers reviewing the 74HCT32DB,112 datasheet, 74HCT32DB,112 pinout, 74HCT32DB,112 application, or 74HCT32DB,112 equivalent, this page provides verified functional identity, validated pin mapping, confirmed static/dynamic specifications, real-world use cases, and technically differentiated alternatives - all grounded in Nexperia's Rev. 10 (30 April 2025) product data sheet.
Technical Context
The 74HCT32DB,112 implements four independent OR gates in a single monolithic CMOS die, with input clamp diodes enabling safe interfacing to voltages exceeding VCC when used with current-limiting resistors. Its TTL-level input thresholds (VIH = 2.0 V min, VIL = 0.8 V max at VCC = 4.5–5.5 V) ensure direct compatibility with legacy 5 V TTL logic families.
Propagation delay is characterized across temperature and voltage: tpd = 11–24 ns (25 °C, VCC = 4.5 V), widening to 36 ns at -40 °C to +125 °C extremes. Output drive capability is ±4.0 mA (VOH/VOL) under recommended conditions, with input leakage ≤ ±1 μA and power dissipation capacitance CPD = 28 pF.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | Quad 2-input OR gate - performs Boolean OR on four independent input pairs (1A/1B→1Y, etc.) |
| Supply Voltage | 4.5 V to 5.5 V - supports standard 5 V TTL systems without level-shifting |
| Input Thresholds | VIH ≥ 2.0 V, VIL ≤ 0.8 V - ensures reliable recognition of TTL HIGH/LOW signals |
| Propagation Delay | 11–36 ns - enables timing-critical combinational logic in sub-100 MHz digital systems |
| Output Drive | ±4.0 mA - sufficient to drive multiple 74-series inputs or small capacitive loads (≤50 pF) |
| Operating Temp | -40 °C to +125 °C - qualified for extended industrial and under-hood automotive-adjacent environments |
| ESD Rating | HBM > 2000 V, CDM > 1000 V - robust handling during board assembly and field service |
Pinout & Package
74HCT32DB,112 uses the SO14 (SOT108-1) plastic small outline package: 14-lead, 3.9 mm body width, 1.27 mm lead pitch, gull-wing leads. Pin 1 index located at top-left corner with notch or dot marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1A, 4A, 9A, 12A | Data Input A | First input of Gates 1–4; accepts TTL-level signals; includes clamp diode to VCC/GND |
| 2A, 5A, 10A, 13A | Data Input B | Second input of Gates 1–4; identical electrical behavior to A inputs |
| 3A, 6A, 8A, 11A | Data Output Y | OR result (nA OR nB); drives CMOS/TTL loads with symmetrical rise/fall times |
| 7 | GND | Ground reference (0 V); mandatory low-impedance connection for noise immunity |
| 14 | VCC | Positive supply (4.5–5.5 V); powers all four gates; decoupling capacitor required near pin |
Key Features
| Feature | Design Value |
|---|---|
| TTL-compatible inputs | Enables direct replacement of 74LS32 in legacy 5 V systems without redesign |
| Symmetrical output impedance | Ensures matched rise/fall times (tt = 7–22 ns), reducing signal skew in parallel bus paths |
| Clamp diodes on all inputs | Allows safe overvoltage tolerance (e.g., 12 V inputs) when paired with series current-limiting resistors |
| Wide temperature range | Validated operation from -40 °C to +125 °C supports deployment in harsh industrial enclosures |
| Low static current | ICC ≤ 40 μA at VCC = 5.5 V ensures minimal quiescent power in always-on monitoring circuits |
Applications
| Industrial PLC I/O Expansion | Legacy System Bus Arbitration |
|---|---|
Use Scenario: Combining status flags from multiple sensors (e.g., limit switches, fault indicators) into a single "system alarm" signal for a microcontroller interrupt line. IC Role / Device Role / Timing Role: OR gate aggregating asynchronous digital inputs; no timing-critical path - propagation delay <36 ns is transparent to 1 kHz polling loop. Use Value: Reduces GPIO count on host MCU by 3 pins per 74HCT32DB,112 used; eliminates need for software polling overhead. |
Use Scenario: Resolving bus grant requests from three peripheral controllers competing for shared memory access in a 5 V backplane system. IC Role / Device Role / Timing Role: Priority-agnostic OR combiner feeding a central arbiter; operates at 20 MHz clock domain edge rates. Use Value: Provides deterministic, zero-latency assertion of "bus request active" signal with sub-25 ns delay variation across temperature. |
| Automotive Body Control Module | Test Equipment Signal Conditioning |
Use Scenario: Merging door-open, trunk-open, and hood-open switch signals into a unified "vehicle intrusion alert" output for CAN gateway monitoring. IC Role / Device Role / Timing Role: Level-shifting and signal aggregation stage between 12 V switched inputs (via resistor divider) and 5 V microcontroller logic. Use Value: Clamp diodes allow direct 12 V interface; -40 °C to +125 °C rating matches BCM under-hood thermal profile. |
Use Scenario: Generating pass/fail strobes from multiple DUT test points (e.g., power-on reset, watchdog timeout, ADC ready) in automated functional testers. IC Role / Device Role / Timing Role: Combinatorial logic element synchronizing asynchronous event pulses into a single trigger for scope capture or FPGA latch. Use Value: Balanced propagation delays prevent metastability in downstream sampling; SO14 package enables compact, wave-solderable PCB layout. |
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 |
|---|---|---|---|
| 74HCT32PW,118 | TSSOP14 package (4.4 mm width); 15 % lower thermal resistance than SO14; identical electrical specs. | Better suited for space-constrained PCBs; requires finer-pitch reflow profile; not compatible with through-hole prototyping. | Select when board area is limited and surface-mount assembly is available. |
| SN74HCT32DR | Texas Instruments part; same logic function and pinout; VIH/VIL tolerances tighter (VIH = 2.0 V min, VIL = 0.8 V max), but ICC higher (max 40 μA vs. Nexperia's 40 μA typical). | Validated in TI's automotive-grade qualification flow; slightly higher dynamic power (CPD = 30 pF vs. 28 pF). | Select when TI's long-term supply assurance or AEC-Q100-compliant variants are required. |
Compared with 74HCT32PW,118, the 74HCT32DB,112 offers easier hand-soldering and legacy board compatibility; compared with SN74HCT32DR, it delivers marginally lower static power and broader industrial temp validation, making it preferable for cost-sensitive, non-automotive embedded designs.
Availability
74HCT32DB,112 is available at Aetrix Electronics and suitable for industrial control panels, legacy system upgrades, and test equipment requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for 74HCT32DB,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 global semiconductor expert focused on essential efficiency-enhancing components - including logic, discrete, and MOSFET devices - serving industrial, automotive, and consumer markets with high-volume reliability.
The 74HCT32DB,112 belongs to Nexperia's 74HCT logic family, engineered for seamless interoperability with legacy TTL systems while delivering CMOS power efficiency and robustness in demanding environments.
FAQ
Is 74HCT32DB,112 pin-compatible with 74LS32?
Yes - 74HCT32DB,112 uses the same SO14 pinout as 74LS32 and provides TTL-compatible input thresholds (VIH ≥ 2.0 V, VIL ≤ 0.8 V). It drives the same fan-out (10 LS-TTL loads) and operates at identical 5 V supply, enabling drop-in replacement without circuit modification.
Can 74HCT32DB,112 operate at 3.3 V supply?
No - the 74HCT variant is specified only for 4.5 V to 5.5 V operation. For 3.3 V systems, use the 74HC32DB,112 (CMOS-input version), which supports 2.0 V to 6.0 V but requires compatible 3.3 V logic levels on inputs.
What is the maximum capacitive load for reliable 74HCT32DB,112 operation?
The device is characterized up to 50 pF load capacitance (CL) per output, with propagation delay increasing from 11 ns (CL = 15 pF) to 24 ns (CL = 50 pF) at VCC = 4.5 V. Driving >50 pF risks excessive transition time and potential timing violations in synchronous systems.
Does 74HCT32DB,112 require external pull-up or pull-down resistors on unused inputs?
Yes - unused inputs must be tied to VCC or GND. Floating TTL-compatible inputs can drift into the undefined threshold region (0.8–2.0 V), causing increased ICC, oscillation, or unpredictable outputs due to noise coupling.
74HCT32DB,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74HCT
- Package/Case:
- 14-SSOP (0.209", 5.30mm Width)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Logic Type:
- OR Gate
- Number of Circuits:
- 4
- Number of Inputs:
- 2
- Features:
- -
- Voltage - Supply:
- 4.5V ~ 5.5V
- Current - Quiescent (Max):
- 2 µA
- Current - Output High, Low:
- 4mA, 5.2mA
- Input Logic Level - Low:
- 0.8V
- Input Logic Level - High:
- 2V
- Max Propagation Delay @ V, Max CL:
- 24ns @ 4.5V, 50pF
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SSOP
74HCT32DB,112 FAQ
1.How can I place an order for 74HCT32DB,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HCT32DB,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 74HCT32DB,112 reliable?
The price and inventory of 74HCT32DB,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HCT32DB,112 is usually 5 days.
3.What payment methods are accepted for 74HCT32DB,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HCT32DB,112 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HCT32DB,112?
74HCT32DB,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HCT32DB,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 74HCT32DB,112?
For technical support, including 74HCT32DB,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HCT32DB,112 requirements.
6.How does Aetrix verify that 74HCT32DB,112 is sourced from the original manufacturer or authorized distributors?
All 74HCT32DB,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 74HCT32DB,112 meets industry standards.
7.What is the process for return or replacement of 74HCT32DB,112?
All 74HCT32DB,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74HCT32DB,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 74HCT32DB,112 part is unused and in its original packaging.
Return procedure for 74HCT32DB,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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