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Nexperia USA Inc. 74AHCT32BQ,115
- Part No.:
- 74AHCT32BQ,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Gates and Inverters
- Package:
- 14-VFQFN Exposed Pad
- Datasheet:
-
74AHCT32BQ,115.pdf
- Description:
- IC GATE OR 4CH 2-INP 14DHVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,200
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Product details
Overview
74AHCT32BQ,115 from Nexperia is a quad 2-input OR gate logic IC with TTL-compatible input thresholds (VIH = 2.0 V min, VIL = 0.8 V max at VCC = 4.5–5.5 V), 7 ns typical propagation delay (CL = 15 pF, VCC = 5 V), and overvoltage-tolerant inputs up to 5.5 V - enabling mixed-voltage level translation in industrial control I/O expansion and sensor interface subsystems.
For engineers reviewing the 74AHCT32BQ,115 datasheet, 74AHCT32BQ,115 pinout, 74AHCT32BQ,115 application, or 74AHCT32BQ,115 equivalent, this device supports robust digital signal combining in noise-prone environments, offers Schmitt-trigger input hysteresis for slow-rising signals, and operates across -40 °C to +125 °C with CMOS-level power efficiency.
Technical Context
The 74AHCT32BQ,115 implements four independent 2-input OR gates using silicon-gate CMOS technology with TTL-level input compatibility. Its input stage includes Schmitt-trigger action on all eight inputs, providing hysteresis (typically 0.3 V) to suppress noise on slow or noisy control lines.
It features overvoltage-tolerant inputs rated to 5.5 V regardless of VCC (2.0–5.5 V), allowing safe interfacing between 3.3 V logic domains and 5 V legacy peripherals. Output drive capability is ±8 mA at VCC = 4.5 V, with rail-to-rail VOH/VOL performance defined across full temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | Quad 2-input OR gate (A + B → Y per channel) |
| Supply Voltage Range | 4.5 V to 5.5 V - ensures compatibility with standard 5 V TTL systems |
| Propagation Delay | 3.1 ns (typ) to 9.0 ns (max) at CL = 15 pF - enables high-speed combinational logic in timing-critical paths |
| Input Thresholds | VIH = 2.0 V min, VIL = 0.8 V max - matches legacy TTL voltage levels for seamless integration |
| Output Drive | ±8 mA at VCC = 4.5 V - sufficient to drive multiple 74-series inputs or small capacitive loads |
| Operating Temperature | -40 °C to +125 °C - qualified for under-hood, industrial motor control, and power supply monitoring |
| ESD Protection | HBM > 2000 V, CDM > 1000 V - enhances reliability during board assembly and field handling |
Pinout & Package
DHVQFN14 package (SOT762-1): 2.5 × 3.0 × 0.85 mm body, no leads, exposed thermal pad (non-soldered by default), 14 terminals, pin 1 index area marked.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | 1A | First OR gate input A - accepts TTL-level signals up to 5.5 V independent of VCC |
| 2 | 1B | First OR gate input B - Schmitt-triggered for noise immunity on slow edges |
| 3 | 1Y | First OR gate output - drives downstream logic with rail-aligned VOH/VOL |
| 4 | 2A | Second OR gate input A - electrically isolated but shares same VCC/GND rails |
| 5 | 2B | Second OR gate input B - identical electrical behavior to 1A/1B |
| 6 | 2Y | Second OR gate output - complements 1Y for parallel logic expansion |
| 7 | GND | Ground reference (0 V) - required for stable logic thresholds and noise rejection |
| 8 | 3Y | Third OR gate output - positioned for low-inductance routing in dense PCB layouts |
| 9 | 3A | Third OR gate input A - terminal layout optimized for orthogonal signal routing |
| 10 | 3B | Third OR gate input B - supports daisy-chained enable or status aggregation |
| 11 | 4Y | Fourth OR gate output - final logic sum output, routed near VCC for decoupling |
| 12 | 4A | Fourth OR gate input A - placed adjacent to VCC (pin 14) for minimal supply bounce |
| 13 | 4B | Fourth OR gate input B - completes quad gate set; all inputs tolerant to 5.5 V |
| 14 | VCC | Positive supply (4.5–5.5 V) - requires local 100 nF ceramic decoupling at package edge |
Key Features
| Feature | Design Value |
|---|---|
| TTL-compatible input thresholds | VIH = 2.0 V min / VIL = 0.8 V max at 5 V supply - eliminates need for external level shifters when interfacing with 74LS or microcontroller GPIO |
| Overvoltage-tolerant inputs | Withstands up to 5.5 V on any input regardless of VCC setting - enables safe connection to 5 V buses while operating from 3.3 V supplies |
| Schmitt-trigger inputs | Hysteresis ~0.3 V on all eight inputs - rejects noise on long traces or mechanical switch debouncing without external RC networks |
| Wide temperature operation | Specified from -40 °C to +125 °C - supports deployment in automotive engine control modules and industrial PLC backplanes |
| Low dynamic power | CPD = 12 pF - limits switching current in high-frequency enable/disable applications, reducing system-level heat generation |
Applications
| Industrial I/O Expansion | Legacy System Interface |
|---|---|
|
Use Scenario: Aggregating multiple limit switch or emergency stop signals into a single fault bus in a PLC rack. IC Role / Device Role / Timing Role: OR gate performing wired-OR fault summation with deterministic propagation (<9 ns) and noise-immune Schmitt inputs. Use Value: Eliminates discrete diode-OR networks, reduces BOM count, and guarantees sub-10 ns response to critical safety events. |
Use Scenario: Interfacing modern 3.3 V microcontrollers with legacy 5 V peripheral address decoders. IC Role / Device Role / Timing Role: Level-translating OR gate accepting 5 V TTL inputs while powered from 3.3 V, preserving signal integrity. Use Value: Enables direct connection without external translators, cutting latency and component cost in retrofit designs. |
| Sensor Signal Conditioning | Power Sequencing Control |
|
Use Scenario: Combining outputs from redundant temperature sensors to trigger thermal shutdown if any exceeds threshold. IC Role / Device Role / Timing Role: Fault-detection OR gate with overvoltage-tolerant inputs accepting analog comparator outputs up to 5.5 V. Use Value: Prevents false trips from transient coupling due to Schmitt-trigger hysteresis and ensures fail-safe response under sensor fault conditions. |
Use Scenario: Enabling DC-DC converter rails only after all upstream power-good signals are asserted. IC Role / Device Role / Timing Role: Combinatorial enable logic block with guaranteed timing (tpd ≤ 9 ns) and rail-to-rail output swing. Use Value: Ensures precise sequencing window control in multi-rail FPGA or ASIC power systems without added delay uncertainty. |
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 |
|---|---|---|---|
| 74AHCT32PW,118 | TSSOP14 package (4.4 mm width); 0.65 mm pitch; higher thermal resistance (7.3 mW/K derating above 81 °C) | Better suited for manual rework or prototyping due to gull-wing leads; less optimal for high-density thermal management | Select when board assembly uses standard reflow profiles and thermal margin > 15 °C is available. |
| SN74AHCT32DR | Texas Instruments part in SOIC-14; VIH/VIL identical; tpd max 10 ns (CL = 50 pF); ICC max 40 μA at 125 °C | Same footprint as Nexperia 74AHCT32D; compatible with legacy SO14 tooling and test fixtures | Choose for drop-in replacement in existing SOIC-based designs where pinout and timing match is mandatory. |
Compared with 74AHCT32PW,118, the 74AHCT32BQ,115 offers superior thermal performance in compact layouts via its exposed-pad DHVQFN package, while SN74AHCT32DR provides footprint compatibility with legacy Nexperia SO14 designs but lacks the overvoltage tolerance margin of the BQ variant.
Availability
74AHCT32BQ,115 is available at Aetrix Electronics and suitable for industrial I/O expansion, legacy system interface, sensor signal conditioning, and power sequencing control requiring stable component supply across extended temperature ranges.
Supply support for 74AHCT32BQ,115 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 with emphasis on reliability and manufacturability.
The 74AHCT32BQ,115 belongs to Nexperia's advanced logic family designed specifically for robust, mixed-voltage digital interfacing in industrial, automotive, and computing applications demanding wide temperature operation and noise immunity.
FAQ
Can 74AHCT32BQ,115 operate with a 3.3 V supply?
No - the 74AHCT32 variant is specified only for 4.5 V to 5.5 V supply operation. Its TTL-compatible input thresholds (VIH = 2.0 V min) and output drive characteristics are validated exclusively within that range. For 3.3 V systems, use the 74AHC32BQ,115 variant instead, which has CMOS-level inputs.
Is the exposed thermal pad on the DHVQFN package required to be soldered?
No - per Nexperia's datasheet, the thermal pad (terminal 1 index area) has no electrical or mechanical requirement to be soldered. If soldered, it must remain floating or be connected to GND; it is not internally tied to GND or VCC and serves only as a thermal enhancement feature.
What is the maximum input frequency supported by 74AHCT32BQ,115?
The device does not specify a maximum clock or toggle frequency. Its usable speed is governed by propagation delay (≤9.0 ns) and load capacitance. With CL = 15 pF, the maximum reliable toggle rate is approximately 55 MHz (1 / (2 × tpd_max)), assuming clean edges and proper termination.
Does 74AHCT32BQ,115 support hot-swap or live-insertion?
No - the device lacks explicit hot-swap protection circuitry such as input current limiting or power-up sequencing control. While overvoltage-tolerant inputs improve robustness, applying VCC after signal inputs may cause latch-up or undefined states; power sequencing per manufacturer guidelines is required.
74AHCT32BQ,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74AHCT
- Package/Case:
- 14-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- 8mA, 8mA
- Input Logic Level - Low:
- 0.8V
- Input Logic Level - High:
- 2V
- Max Propagation Delay @ V, Max CL:
- 7.9ns @ 5V, 50pF
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-DHVQFN (2.5x3)
74AHCT32BQ,115 FAQ
1.How can I place an order for 74AHCT32BQ,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74AHCT32BQ,115 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 74AHCT32BQ,115 reliable?
The price and inventory of 74AHCT32BQ,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AHCT32BQ,115 is usually 5 days.
3.What payment methods are accepted for 74AHCT32BQ,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AHCT32BQ,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74AHCT32BQ,115?
74AHCT32BQ,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74AHCT32BQ,115 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 74AHCT32BQ,115?
For technical support, including 74AHCT32BQ,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AHCT32BQ,115 requirements.
6.How does Aetrix verify that 74AHCT32BQ,115 is sourced from the original manufacturer or authorized distributors?
All 74AHCT32BQ,115 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 74AHCT32BQ,115 meets industry standards.
7.What is the process for return or replacement of 74AHCT32BQ,115?
All 74AHCT32BQ,115 units undergo pre-shipment inspection (PSI). If there is an issue with 74AHCT32BQ,115, 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 74AHCT32BQ,115 part is unused and in its original packaging.
Return procedure for 74AHCT32BQ,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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