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Nexperia USA Inc. 74HCT27BQ-Q100X
- Part No.:
- 74HCT27BQ-Q100X
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Gates and Inverters
- Package:
- 14-VFQFN Exposed Pad
- Datasheet:
-
74HCT27BQ-Q100X.pdf
- Description:
- IC GATE NOR 3CH 3-INP 14DHVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,471
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Product details
Overview
74HCT27BQ-Q100 from Nexperia is an automotive-qualified triple 3-input NOR gate in DHVQFN14 package, operating from 4.5 V to 5.5 V supply, with TTL-compatible inputs, propagation delay of 12–32 ns (−40 °C to +125 °C), and AEC-Q100 Grade 1 qualification for under-hood control logic.
For engineers reviewing the 74HCT27BQ-Q100 datasheet, 74HCT27BQ-Q100 pinout, 74HCT27BQ-Q100 application, or 74HCT27BQ-Q100 equivalent, this device serves as a robust, low-power combinational logic element for automotive body control modules, powertrain interface circuits, and fault-monitoring logic where input level compatibility with legacy TTL systems and high-temperature reliability are required.
Technical Context
This device implements three independent 3-input NOR 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 standard 5 V TTL outputs without level shifting. Each gate exhibits symmetrical propagation delays (tPHL/tPLH) and transition times (tTHL/tTLH) across temperature.
Input clamp diodes allow safe operation with input voltages exceeding VCC when used with current-limiting resistors. The DHVQFN14 package features side-wettable flanks for automated optical inspection of solder joints and thermal enhancement for sustained operation at +125 °C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | Triple 3-input NOR: Y = NOT(A OR B OR C), fully independent per gate |
| Supply Voltage Range | 4.5 V to 5.5 V - matches standard automotive 5 V rail with ±10 % tolerance |
| Propagation Delay | 12 ns (typ) to 32 ns (max) at VCC = 4.5 V, −40 °C to +125 °C - supports <30 MHz toggle rates |
| Input Thresholds | VIH = 2.0 V min, VIL = 0.8 V max - ensures reliable recognition of TTL output levels |
| Output Drive | ±4.0 mA at VCC = 4.5 V - sufficient to drive 10 LSTTL loads or 20 CMOS inputs |
| Operating Temperature | −40 °C to +125 °C - qualified per AEC-Q100 Grade 1 for engine compartment use |
| ESD Protection | HBM >2000 V, CDM >1000 V - exceeds automotive ESD immunity requirements |
Pinout & Package
DHVQFN14 (SOT762-1) package: 2.5 mm × 3.0 mm × 0.85 mm body, no leads, exposed thermal pad (non-electrical, optional GND connection), side-wettable flanks for AOI.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1A, 2A, 3A | Data input (Gate 1–3 A) | Three independent first inputs per NOR gate; CMOS input structure with clamp diodes |
| 1B, 2B, 3B | Data input (Gate 1–3 B) | Three independent second inputs; compatible with TTL voltage levels |
| 1C, 2C, 3C | Data input (Gate 1–3 C) | Three independent third inputs; enables full 3-input NOR logic per channel |
| 1Y, 2Y, 3Y | Data output (Gate 1–3 Y) | Pull-up/pull-down CMOS outputs; VOH ≥3.98 V, VOL ≤0.33 V at 4 mA load |
| GND (Pin 7) | Ground reference | Primary 0 V return path; decoupling capacitor must be placed adjacent to Pin 7 |
| VCC (Pin 14) | Power supply | 5 V nominal supply; requires local 100 nF ceramic decoupling between Pins 7 and 14 |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for −40 °C to +125 °C operation in automotive powertrain and chassis systems |
| TTL-compatible input levels | Accepts standard 5 V TTL outputs directly-no level shifter needed in mixed-logic designs |
| Input clamp diodes | Enables safe interface to signals up to VCC + 0.5 V using external current-limiting resistors |
| DHVQFN14 with side-wettable flanks | Supports automated optical inspection of solder joints-critical for zero-defect automotive manufacturing |
| Low dynamic power dissipation | CPD = 30 pF enables sub-1 mW dynamic power at 1 MHz switching with 15 pF load |
Applications
| Body Control Module Logic | Powertrain Sensor Interface |
|---|---|
|
Use Scenario: Combining door lock status, window position, and ignition signal to enable/disable interior lighting control logic. IC Role / Device Role / Timing Role: Combinational logic gate performing real-time NOR evaluation of three safety-critical inputs before enabling output drivers. Use Value: Eliminates need for microcontroller GPIO polling; provides deterministic, zero-latency hardware-level interlock with <32 ns worst-case delay. |
Use Scenario: Validating simultaneous crankshaft and camshaft sensor readiness before enabling fuel injection timing sequence. IC Role / Device Role / Timing Role: Gate-level validation block that asserts "sensor sync OK" only when all three timing signals meet validity criteria. Use Value: Ensures fail-safe engine start inhibition if any sensor fails open-circuit or produces invalid logic state. |
| Fault Monitoring Circuit | LED Driver Enable Logic |
|
Use Scenario: Monitoring overvoltage, overtemperature, and short-circuit flags from motor driver ICs to assert global shutdown signal. IC Role / Device Role / Timing Role: Hardware-based OR-to-NOR inversion stage converting active-high fault flags into active-low disable command. Use Value: Provides sub-35 ns response to fault conditions-faster than software-based monitoring and immune to MCU lockup. |
Use Scenario: Enabling high-brightness LED clusters in headlamp assemblies only when CAN bus message, dimmer setting, and thermal sensor all indicate safe operation. IC Role / Device Role / Timing Role: Three-input combinatorial gate generating final enable signal for LED driver ICs based on concurrent system conditions. Use Value: Reduces BOM count by replacing discrete resistor-diode logic; improves thermal margin via low 2 μA ICC standby current. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar triple 3-input NOR gate applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74HCT27PW-Q100 | TSSOP14 package (4.4 mm width); same electrical specs; 7.3 mW/K power derating above 81 °C | Better suited for board space-constrained but thermally moderate zones (e.g., infotainment bay) | Select when PCB reflow profile favors TSSOP or when manual inspection is preferred over AOI |
| SN74HCT27QPWRQ1 | Texas Instruments part; identical function and AEC-Q100 Grade 1 rating; VCC range 4.5–5.5 V; tpd max 25 ns @ +125 °C | Slightly faster max propagation delay; different pinout (SOIC-14) and JEDEC-compliant marking | Choose when TI ecosystem alignment or SOIC hand-solderability is prioritized over quad-flat footprint |
Compared with 74HCT27BQ-Q100, the PW variant trades thermal performance for smaller footprint and easier visual inspection, while the TI SN74HCT27QPWRQ1 offers tighter timing guarantees but requires layout adaptation due to SOIC pinout and lacks side-wettable flanks for AOI.
Availability
74HCT27BQ-Q100 is available at Aetrix Electronics and suitable for automotive body control modules, powertrain interface circuits, fault monitoring subsystems, and LED driver enable logic requiring stable component supply across extended temperature ranges.
Supply support for 74HCT27BQ-Q100 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 Dutch semiconductor manufacturer specializing in high-volume, high-reliability logic, analog, and discrete components for automotive and industrial markets.
The 74HCT series targets automotive-grade combinational logic applications where TTL compatibility, AEC-Q100 compliance, and robustness across extreme temperatures are mandatory design requirements.
FAQ
Is the exposed thermal pad on the DHVQFN14 package electrically connected?
No. The exposed pad (Pin 1 index area) is not electrically connected to any internal node. It may remain floating or be soldered to GND for thermal improvement, but no electrical requirement exists. If connected to GND, it must not create a short to adjacent terminals.
Can 74HCT27BQ-Q100 operate reliably at 6.0 V supply?
No. The 74HCT27BQ-Q100 is specified only for 4.5 V to 5.5 V operation per its recommended conditions. While absolute maximum rating allows 7.0 V, operation above 5.5 V violates AEC-Q100 qualification limits and risks parametric shift or accelerated wear-out.
What is the purpose of the input clamp diodes?
The internal clamp diodes protect inputs from overvoltage transients up to VCC + 0.5 V. When interfacing to signals exceeding VCC (e.g., 12 V sensor outputs), a series current-limiting resistor must be used to restrict IIK to ±20 mA, preventing damage per Table 4 limiting values.
How does the DHVQFN14 package support automated optical inspection?
The side-wettable flanks provide vertical copper surfaces along each edge of the package body. During reflow, solder wets these surfaces and forms a visible meniscus, enabling AOI systems to verify solder joint volume, alignment, and wetting quality without X-ray or cross-sectioning.
74HCT27BQ-Q100X Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74HCT
- Package/Case:
- 14-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- NOR Gate
- Number of Circuits:
- 3
- Number of Inputs:
- 3
- Features:
- -
- Voltage - Supply:
- 4.5V ~ 5.5V
- Current - Quiescent (Max):
- 2 µA
- Current - Output High, Low:
- 4mA, 4mA
- Input Logic Level - Low:
- 0.8V
- Input Logic Level - High:
- 2V
- Max Propagation Delay @ V, Max CL:
- 21ns @ 4.5V, 50pF
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-DHVQFN (2.5x3)
74HCT27BQ-Q100X FAQ
1.How can I place an order for 74HCT27BQ-Q100X through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HCT27BQ-Q100X 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 74HCT27BQ-Q100X reliable?
The price and inventory of 74HCT27BQ-Q100X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HCT27BQ-Q100X is usually 5 days.
3.What payment methods are accepted for 74HCT27BQ-Q100X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HCT27BQ-Q100X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HCT27BQ-Q100X?
74HCT27BQ-Q100X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HCT27BQ-Q100X 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 74HCT27BQ-Q100X?
For technical support, including 74HCT27BQ-Q100X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HCT27BQ-Q100X requirements.
6.How does Aetrix verify that 74HCT27BQ-Q100X is sourced from the original manufacturer or authorized distributors?
All 74HCT27BQ-Q100X 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 74HCT27BQ-Q100X meets industry standards.
7.What is the process for return or replacement of 74HCT27BQ-Q100X?
All 74HCT27BQ-Q100X units undergo pre-shipment inspection (PSI). If there is an issue with 74HCT27BQ-Q100X, 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 74HCT27BQ-Q100X part is unused and in its original packaging.
Return procedure for 74HCT27BQ-Q100X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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