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Texas Instruments CD74HC366QDRQ1
- Part No.:
- CD74HC366QDRQ1
- Manufacturer:
- Texas Instruments
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
CD74HC366QDRQ1.pdf
- Description:
- IC BUFFER INVERT 6V 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,957
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Product details
Overview
CD74HC366QDRQ1 from Texas Instruments is an automotive-qualified, high-speed CMOS hex inverting buffer with three-state outputs, operating from 2 V to 6 V, delivering 8 ns typical propagation delay at 5 V/15 pF, and supporting –40°C to 125°C ambient operation for engine control and body electronics bus interfacing.
For engineers reviewing the CD74HC366QDRQ1 datasheet, CD74HC366QDRQ1 pinout, CD74HC366QDRQ1 application, or CD74HC366QDRQ1 equivalent, this page delivers verified functional modes, SOIC-16 package details, automotive-grade thermal and ESD specs, and real-world bus driver selection criteria including drive strength, enable timing, and logic compatibility.
Technical Context
The CD74HC366QDRQ1 implements six independent inverting buffer channels, each controlled by a shared dual-enable NOR logic (OE1, OE2) that places all outputs in high-impedance state when either enable is high. Its silicon-gate CMOS architecture ensures rail-to-rail output swing and low static current (≤160 μA at 6 V).
It drives up to 15 LSTTL loads with bus-driver-level sink/source capability (±25 mA continuous), supports fast transition times (10–15 ns at 6 V), and maintains balanced tPLH/tPHL skew under varying load and temperature. Input thresholds are CMOS-compatible (VIH = 4.2 V min, VIL = 1.8 V max at VCC = 6 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | Hex inverting buffer with three-state outputs - enables bidirectional bus control via active-low enable logic. |
| Supply Voltage Range | 2 V to 6 V - supports wide-input rail operation in 3.3 V and 5 V automotive subsystems without level-shifting. |
| Propagation Delay | 19 ns max (tPHL/tPLH) at VCC = 6 V, CL = 50 pF - ensures sub-50 MHz bus timing margin in CAN/LIN peripheral interfaces. |
| Output Drive Strength | ±25 mA continuous per output - sustains signal integrity across 15 LSTTL loads or >100 pF PCB traces. |
| Operating Temperature | –40°C to +125°C - qualified per AEC-Q100 Grade 1 for under-hood and powertrain applications. |
| ESD Rating | HBM ±1500 V - meets automotive manufacturing handling requirements without additional protection circuitry. |
| Input Leakage | ±1 μA max at 6 V - minimizes standby current impact in always-on vehicle modules. |
Pinout & Package
CD74HC366QDRQ1 is housed in a 16-pin SOIC (D) package measuring 9.90 mm × 3.90 mm, with standard 1.27 mm pitch, RoHS-compliant NiPdAu lead finish, and MSL Level-1 moisture sensitivity rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4, 5, 8, 9, 12 | Inverting input (A1–A6) | Accepts CMOS- or TTL-level logic; VIH/VIL thresholds scale with VCC for robust noise immunity. |
| 2, 6, 7, 10, 11, 13 | Inverting output (Y1–Y6) | Three-state capable; sinks or sources up to 25 mA; high-Z when OE1 or OE2 = high. |
| 3, 14 | Output enable (OE1, OE2) | NOR logic: both must be low to enable outputs; single-point fault tolerance for safety-critical disable paths. |
| 16 | VCC | Power supply input; requires local 0.1 μF bypass capacitor to suppress switching noise on shared rails. |
| 8 | GND | Ground reference; connects to system chassis ground plane to minimize common-mode noise in sensor interfaces. |
Key Features
| Feature | Design Value |
|---|---|
| Automotive qualification | AEC-Q100 Grade 1 certified - validated for lifetime reliability in harsh automotive environments. |
| High-current bus driving | 15 LSTTL load capability - eliminates need for external line drivers in instrument cluster or gateway MCU buses. |
| Low power consumption | 160 μA max ICC at 6 V - reduces quiescent current in always-on domain controllers. |
| Fast, balanced transitions | 10 ns max tTLH/tTHL at 6 V - minimizes duty-cycle distortion in clock distribution or PWM signal buffering. |
| Wide voltage operation | 2–6 V supply range - enables interoperability between 3.3 V microcontrollers and 5 V legacy peripherals. |
Applications
| Engine Control Unit (ECU) Signal Conditioning | Body Control Module (BCM) Bus Interface |
|---|---|
|
Use Scenario: Buffering and isolating analog-to-digital converter (ADC) reference signals and sensor excitation lines in engine management systems. IC Role / Device Role / Timing Role: Inverting buffer with three-state control provides clean signal inversion and enables multiplexed ADC channel selection without crosstalk. Use Value: 125°C operation and ±25 mA drive ensure stable performance during extended idle-stop cycles and under-hood thermal transients. |
Use Scenario: Driving LIN bus transceiver inputs and controlling door lock actuator enable lines in centralized body electronics. IC Role / Device Role / Timing Role: Hex inverter buffers digital control signals while OE pins synchronize with microcontroller sleep/wake transitions. Use Value: Dual OE logic allows fail-safe bus shutdown during MCU reset, meeting ISO 16750-2 transient immunity requirements. |
| Instrument Cluster Display Interface | ADAS Camera Power Sequencing |
|
Use Scenario: Level-shifting and buffering SPI clock/data lines between 3.3 V display controller and 5 V segment driver ICs. IC Role / Device Role / Timing Role: Non-inverting buffer variant not applicable; CD74HC366QDRQ1 used for inverted control strobes (e.g., chip select inversion). Use Value: 8 ns propagation delay preserves SPI timing margins at 10 MHz, avoiding setup/hold violations in TFT backlight control. |
Use Scenario: Enabling/disabling power rails for image sensor modules using synchronized enable signals derived from camera SoC GPIOs. IC Role / Device Role / Timing Role: Three-state inverter acts as programmable power sequencer gate, with OE pins tied to safety monitor outputs. Use Value: High-impedance state prevents backfeed during hot-swap events, protecting 1.8 V/2.8 V sensor I/O during power-up sequencing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar hex inverting buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVCH16244A-Q1 | 16-bit non-inverting buffer, 3.3 V only, higher drive (±24 mA), no inverting function | Requires redesign for inversion logic; suited for high-density data bus expansion, not discrete signal conditioning | Select when replacing multiple CD74HC366QDRQ1 units on a wide parallel bus; avoid if inverting logic or 5 V support is required. |
| CD74HC366M96 | Same logic function and pinout, but commercial-grade (–40°C to 85°C), non-automotive qualified | Lacks AEC-Q100 validation; unsuitable for powertrain or safety-critical domains | Use only in infotainment head units or HVAC control where ambient temperature stays below 85°C and automotive certification is waived. |
Compared with SN74LVCH16244A-Q1 and CD74HC366M96, the CD74HC366QDRQ1 uniquely combines automotive qualification, inverting logic, 2–6 V operation, and SOIC-16 footprint-making it irreplaceable for cost-sensitive, thermally demanding, and function-specific automotive signal routing.
Availability
CD74HC366QDRQ1 is available at Aetrix Electronics and suitable for engine control units, body control modules, instrument clusters, and ADAS camera power sequencers requiring stable component supply across automotive production lifecycles.
Supply support for CD74HC366QDRQ1 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
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and automotive-grade logic solutions with over 50 years of automotive qualification experience.
The CD74HC366QDRQ1 belongs to TI's automotive HC logic family, designed specifically to replace legacy TTL in engine management, chassis control, and body electronics while maintaining pin compatibility and improving power efficiency.
FAQ
What is the maximum operating temperature for CD74HC366QDRQ1?
The CD74HC366QDRQ1 is rated for continuous operation from –40°C to +125°C ambient temperature, fully qualified per AEC-Q100 Grade 1 standards for under-hood automotive applications such as engine control units and transmission control modules. This rating is validated across all electrical parameters including propagation delay, output drive, and leakage current.
Does CD74HC366QDRQ1 support 3.3 V logic levels?
Yes, CD74HC366QDRQ1 operates reliably at 3.3 V supply (within its 2–6 V range), with CMOS-compatible input thresholds (VIH ≥ 2.31 V, VIL ≤ 1.09 V at VCC = 3.3 V) and rail-to-rail output swing. It interfaces directly with 3.3 V microcontrollers without level shifters, making it suitable for modern automotive domain controllers.
How does the dual-output-enable (OE1/OE2) logic work on CD74HC366QDRQ1?
The CD74HC366QDRQ1 uses internal NOR logic on OE1 and OE2: all six outputs enter high-impedance state when either OE1 or OE2 is high. Both enables must be low to activate outputs. This design allows redundant disable paths-for example, one OE tied to MCU GPIO and the other to a hardware safety monitor-enhancing fault tolerance in ASIL-B systems.
Is CD74HC366QDRQ1 pin-compatible with CD74HC365QDRQ1?
Yes, CD74HC366QDRQ1 is pin-compatible with CD74HC365QDRQ1 (non-inverting variant) in the same SOIC-16 package. The only functional difference is inversion: A→Y logic is inverted in CD74HC366QDRQ1 and non-inverted in CD74HC365QDRQ1. No PCB layout change is needed when swapping between them for signal polarity adjustment.
What is the recommended bypass capacitor for CD74HC366QDRQ1?
Texas Instruments recommends a 0.1 μF ceramic capacitor placed as close as possible to the VCC (pin 16) and GND (pin 8) pins of CD74HC366QDRQ1 to suppress high-frequency switching noise. For enhanced noise rejection across wider bandwidths, a parallel 1 μF capacitor may be added-both capacitors must be mounted within 3 mm of the device pins to maintain low-inductance paths.
CD74HC366QDRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74HC
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- Buffer, Inverting
- Number of Elements:
- 1
- Number of Bits per Element:
- 6
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 7.8mA, 7.8mA
- Voltage - Supply:
- 2V ~ 6V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
CD74HC366QDRQ1 FAQ
1.How can I place an order for CD74HC366QDRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for CD74HC366QDRQ1 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 CD74HC366QDRQ1 reliable?
The price and inventory of CD74HC366QDRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CD74HC366QDRQ1 is usually 5 days.
3.What payment methods are accepted for CD74HC366QDRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CD74HC366QDRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CD74HC366QDRQ1?
CD74HC366QDRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CD74HC366QDRQ1 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 CD74HC366QDRQ1?
For technical support, including CD74HC366QDRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CD74HC366QDRQ1 requirements.
6.How does Aetrix verify that CD74HC366QDRQ1 is sourced from the original manufacturer or authorized distributors?
All CD74HC366QDRQ1 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 CD74HC366QDRQ1 meets industry standards.
7.What is the process for return or replacement of CD74HC366QDRQ1?
All CD74HC366QDRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with CD74HC366QDRQ1, 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 CD74HC366QDRQ1 part is unused and in its original packaging.
Return procedure for CD74HC366QDRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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