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Nexperia USA Inc. 74HC32DB,112
- Part No.:
- 74HC32DB,112
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Gates and Inverters
- Package:
- 14-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
74HC32DB,112.pdf
- Description:
- IC GATE OR 4CH 2-INP 14SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,210
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Product details
Overview
74HC32DB,112 from Nexperia is a quad 2-input OR gate in SO14 (SOT108-1) package, operating from 2.0 V to 6.0 V supply, delivering CMOS-level input compatibility, symmetrical output impedance, and propagation delays as low as 6 ns at VCC = 6.0 V with CL = 50 pF - used for logic-level signal combining in industrial control I/O expansion and digital bus arbitration circuits.
For engineers reviewing the 74HC32DB,112 datasheet, 74HC32DB,112 pinout, 74HC32DB,112 application, or 74HC32DB,112 equivalent, key selection criteria include supply voltage range (2.0–6.0 V), guaranteed operation up to +125 °C, TTL-compatible variants (74HCT32), input clamp diodes enabling overvoltage-tolerant interfacing, and SO14 package thermal performance with 500 mW total power dissipation.
Technical Context
The 74HC32DB,112 implements four independent OR logic functions using standard CMOS silicon technology, with inputs featuring integrated clamp diodes that allow safe interface to signals exceeding VCC when current-limiting resistors are used. Its symmetrical output drive ensures matched rise/fall times and balanced propagation delays across all gates.
It operates across industrial and extended temperature ranges (−40 °C to +125 °C), complies with JEDEC JESD7A (2.0–6.0 V) and JESD8C (2.7–3.6 V), and meets HBM ESD immunity >2000 V and CDM >1000 V - confirming suitability for noise-prone embedded control environments requiring robust digital signal conditioning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | Quad 2-input OR gate - provides four independent Boolean OR operations per package. |
| Supply Voltage Range | 2.0 V to 6.0 V - supports direct integration into 3.3 V and 5 V systems without level-shifting. |
| Propagation Delay | 6 ns (typ) at VCC = 6.0 V, CL = 50 pF - enables reliable timing in sub-20 MHz synchronous logic paths. |
| Input Clamp Diodes | Integrated on all inputs - permits safe connection to voltages > VCC when series resistors limit current to ≤±20 mA. |
| Operating Temperature | −40 °C to +125 °C - qualified for under-hood industrial automation and motor drive control modules. |
| Output Drive | ±4.0 mA at VCC = 4.5 V - sufficient to drive multiple 74HC-series inputs or small capacitive loads (<50 pF). |
| Power Dissipation | 500 mW max (SO14 package, Tamb ≤ 100 °C) - requires no heatsinking in typical PCB layouts with moderate airflow. |
Pinout & Package
74HC32DB,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, JEDEC MS-012 compliant. Pin 1 index located at top-left corner with notch or dot marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1A, 4A, 9A, 12A | Input A of Gate 1–4 | First input terminal for each of four OR gates; accepts CMOS-level signals (0–VCC). |
| 2B, 5B, 10B, 13B | Input B of Gate 1–4 | Second input terminal per gate; electrically identical to A inputs with same VIH/VIL thresholds. |
| 3Y, 6Y, 8Y, 11Y | Output Y of Gate 1–4 | OR result (nY = nA ∨ nB); drives high/low with symmetrical impedance (~50 Ω typical). |
| 7 | GND | Ground reference (0 V) - must be connected to system common; decoupling capacitor recommended near pin. |
| 14 | VCC | Positive supply rail - requires local 100 nF ceramic decoupling between pins 7 and 14. |
Key Features
| Feature | Design Value |
|---|---|
| Wide Supply Range | 2.0–6.0 V operation enables drop-in use in both 3.3 V and 5 V legacy systems without redesign. |
| Input Clamp Protection | On-chip diodes allow interfacing to 12 V control signals via 10 kΩ series resistors - eliminates external protection components. |
| Latch-up Immunity | Exceeds 100 mA per JESD78 Class II Level B - prevents destructive latch-up during transient overvoltage events. |
| High Noise Immunity | VIH ≥ 3.15 V / VIL ≤ 1.35 V at VCC = 4.5 V - provides >1.8 V noise margin against EMI in industrial enclosures. |
| Thermal Robustness | Rated for continuous operation at +125 °C ambient - validated for use in sealed motor drive control housings. |
Applications
| Industrial PLC I/O Expansion | Digital Bus Arbitration |
|---|---|
Use Scenario: Combining status signals from multiple field sensors (limit switches, proximity detectors) into a single fault-bus line for centralized monitoring. IC Role / Device Role / Timing Role: Logic-level OR combiner aggregating active-high fault flags; no timing-critical path - propagation delay <27 ns ensures deterministic response. Use Value: Reduces wiring complexity by replacing discrete diode-OR networks; eliminates voltage drop and leakage issues inherent in passive solutions. |
Use Scenario: Resolving simultaneous access requests from multiple microcontrollers sharing a common SPI or UART bus segment. IC Role / Device Role / Timing Role: Priority-agnostic request aggregator feeding a central arbiter; operates outside clock domain - DC-coupled logic function only. Use Value: Enables deterministic bus grant signaling without software coordination; avoids race conditions caused by asynchronous enable toggling. |
| Motor Control Enable Logic | Power Sequencing Supervisor |
Use Scenario: Enabling motor driver ICs only when all safety interlocks (E-stop, door switch, thermal cutoff) are satisfied AND start command is asserted. IC Role / Device Role / Timing Role: Final-stage OR gate merging redundant enable paths before driving high-side gate drivers; DC logic block with no AC constraints. Use Value: Provides hardware-enforced redundancy - failure of one interlock path does not disable full system shutdown capability. |
Use Scenario: Validating presence of all required supply rails (3.3 V, 5 V, 12 V) before releasing reset to an FPGA or MCU during cold start. IC Role / Device Role / Timing Role: Rail-status combiner feeding POR circuit; static logic evaluation - propagation delay irrelevant due to ms-scale reset timing. Use Value: Replaces custom comparator-based supervisor ICs in cost-sensitive designs where only boolean rail presence matters. |
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 |
|---|---|---|---|
| 74HCT32DB,112 | TTL-compatible inputs (VIH = 2.0 V min), otherwise identical pinout, timing, and packaging. | Required when interfacing legacy 5 V TTL outputs without level shifters. | Select when driving from 74LS or older microcontroller GPIOs with weak high-drive capability. |
| SN74HC32DR | Same logic function and specs, but TI SO14 package (PW) has slightly different thermal resistance (RθJA = 137 K/W vs Nexperia's 120 K/W). | Valid for space-constrained boards where alternate sourcing is needed; identical functional behavior. | Use for dual-sourcing assurance in long-lifecycle industrial programs - verify layout thermal relief matches TI spec. |
Compared with 74HC32DB,112, the 74HCT32DB,112 offers better compatibility with legacy TTL outputs but sacrifices some noise margin at low VCC, while SN74HC32DR provides second-source availability with minor thermal derating implications in high-power-density layouts.
Availability
74HC32DB,112 is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, motor control enable logic, and digital bus arbitration requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for 74HC32DB,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 technologies, delivering high-performance logic, analog, and MOSFET solutions optimized for reliability and energy efficiency.
The 74HC32DB,112 belongs to Nexperia's 74HC logic family - designed specifically for industrial and automotive-adjacent applications demanding wide voltage operation, high ESD tolerance, and guaranteed −40 °C to +125 °C functionality.
FAQ
Is 74HC32DB,112 compatible with 3.3 V microcontroller GPIOs?
Yes - its CMOS inputs accept VIH ≥ 2.1 V at VCC = 3.3 V (per datasheet Table 6), and outputs swing rail-to-rail, ensuring clean interfacing with 3.3 V logic families. Input clamp diodes also permit safe connection to higher-voltage control lines when series resistors limit current.
Can 74HC32DB,112 replace 74LS32 in existing 5 V designs?
Yes, with qualification: it provides identical pinout and logic function, but requires verifying that the driving source meets 74HC input thresholds (VIH ≥ 3.15 V at VCC = 5 V). Unlike 74LS32, it draws negligible quiescent current (<2 μA), reducing system power load.
What is the maximum capacitive load this device can drive reliably?
At VCC = 5 V and Tamb = 25 °C, the 74HC32DB,112 maintains specified propagation delay and output voltage levels up to 50 pF (per dynamic characteristics test condition). For loads >50 pF, transition times increase linearly - design margin requires limiting trace + input capacitance to ≤35 pF for <20 ns delay variation.
Does this part require external pull-up or pull-down resistors on unused inputs?
No - unused inputs must be tied HIGH or LOW to prevent floating states that cause increased ICC and potential oscillation. The datasheet explicitly prohibits leaving inputs unconnected; internal structure lacks built-in termination, so external connection to VCC or GND is mandatory for each idle input.
74HC32DB,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74HC
- 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:
- 2V ~ 6V
- Current - Quiescent (Max):
- 2 µA
- Current - Output High, Low:
- 5.2mA, 5.2mA
- Input Logic Level - Low:
- 0.5V ~ 1.8V
- Input Logic Level - High:
- 1.5V ~ 4.2V
- Max Propagation Delay @ V, Max CL:
- 15ns @ 6V, 50pF
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SSOP
74HC32DB,112 FAQ
1.How can I place an order for 74HC32DB,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HC32DB,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 74HC32DB,112 reliable?
The price and inventory of 74HC32DB,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HC32DB,112 is usually 5 days.
3.What payment methods are accepted for 74HC32DB,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HC32DB,112 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HC32DB,112?
74HC32DB,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HC32DB,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 74HC32DB,112?
For technical support, including 74HC32DB,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HC32DB,112 requirements.
6.How does Aetrix verify that 74HC32DB,112 is sourced from the original manufacturer or authorized distributors?
All 74HC32DB,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 74HC32DB,112 meets industry standards.
7.What is the process for return or replacement of 74HC32DB,112?
All 74HC32DB,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74HC32DB,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 74HC32DB,112 part is unused and in its original packaging.
Return procedure for 74HC32DB,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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