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NXP Semiconductors 74HCT366DB,118
- Part No.:
- 74HCT366DB,118
- Manufacturer:
- NXP Semiconductors
- Package:
- 16-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
74HCT366DB,118.pdf
- Description:
- IC HEX BUFFER/LINE DVR 16SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,000
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Product details
Overview
74HCT366DB,118 from Nexperia is a hex inverting 3-state buffer/line driver IC designed for bus-oriented applications requiring bidirectional data flow control. It features two independent output-enable inputs (OE1, OE2), TTL-compatible input thresholds (VIH = 2.0 V min, VIL = 0.8 V max at VCC = 4.5–5.5 V), 16-pin SO16 package, and operates across -40 °C to +125 °C. Used in industrial PLC I/O modules for isolating microcontroller GPIOs from noisy field-side buses.
For engineers reviewing the 74HCT366DB,118 datasheet, 74HCT366DB,118 pinout, 74HCT366DB,118 application, or 74HCT366DB,118 equivalent, this device is selected for its guaranteed TTL-level input compatibility, low static current (≤160 μA at 125 °C), fast enable/disable timing (ten ≤ 53 ns, tdis ≤ 53 ns at VCC = 4.5 V), and robust 3-state drive capability (±6 mA output at VCC = 4.5 V).
Technical Context
The 74HCT366DB,118 implements six identical inverting buffer stages, each with independent output control via dual active-low enables (OE1 controls outputs 1Y–3Y; OE2 controls 4Y–6Y). Its TTL-compatible input structure ensures direct interfacing with legacy 5 V logic families without level-shifting.
Each output exhibits true 3-state behavior: HIGH, LOW, or high-impedance OFF (Z), with leakage < ±10 μA in OFF-state and rail-to-rail VOH/VOL performance (VOH ≥ 3.7 V, VOL ≤ 0.4 V at IO = ±6 mA, VCC = 4.5 V, 125 °C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | 74HCT - TTL-compatible CMOS, enabling direct connection to 5 V bipolar logic without pull-ups or translators. |
| Supply Voltage Range | 4.5 V to 5.5 V - Matches standard 5 V system rails; operation outside this range invalidates guaranteed timing and voltage specs. |
| Propagation Delay | ≤36 ns max (nA → nY, VCC = 4.5 V, -40 °C to +125 °C) - Ensures deterministic timing in synchronous bus arbitration circuits. |
| Enable/Disable Time | ≤53 ns max (OEn → nY, VCC = 4.5 V, -40 °C to +125 °C) - Supports rapid bus turnaround in half-duplex communication protocols. |
| Output Drive | ±6.0 mA (VCC = 4.5 V, VOL ≤ 0.4 V, VOH ≥ 3.7 V) - Sufficient to drive 50 pF loads over 10 cm PCB traces in industrial backplanes. |
| Input Leakage | ±1.0 μA max (VI = GND or VCC, VCC = 5.5 V, -40 °C to +125 °C) - Minimizes unintended current paths in high-impedance control lines. |
| Operating Temperature | -40 °C to +125 °C - Qualified for under-hood industrial control enclosures and extended-temperature programmable logic interfaces. |
Pinout & Package
74HCT366DB,118 is housed in a plastic small outline package (SO16, SOT109-1) with 16 leads, 3.9 mm body width, and standard 1.27 mm lead pitch. Pin 1 is marked by a notch or dot; pin numbering follows counter-clockwise convention from top-left corner when viewed with marking side up.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 15 | OE1, OE2 | Active-low output enable inputs - OE1 controls 1Y–3Y; OE2 controls 4Y–6Y; both must be LOW for enabled outputs. |
| 2, 4, 6, 10, 12, 14 | 1A–6A | Inverting data inputs - Each drives corresponding inverted output (e.g., 1A → 1Y); CMOS inputs with clamp diodes for overvoltage tolerance. |
| 3, 5, 7, 9, 11, 13 | 1Y–6Y | Inverting 3-state outputs - Output state is inverted input when OE is LOW; high-impedance when OE is HIGH. |
| 8 | GND | Digital ground reference - Must be connected to system 0 V plane; decoupling capacitor required within 10 mm of pin 8 and pin 16. |
| 16 | VCC | Positive supply - 4.5–5.5 V nominal; requires local 100 nF ceramic decoupling between pins 8 and 16. |
Key Features
| Feature | Design Value |
|---|---|
| TTL-compatible inputs | VIH ≥ 2.0 V, VIL ≤ 0.8 V at VCC = 4.5–5.5 V - Eliminates need for external level shifters when interfacing with legacy 5 V microcontrollers or FPGAs. |
| Dual independent output enables | OE1 and OE2 separately control two groups of three outputs - Enables partitioned bus driving (e.g., address vs. data lanes) without external gating logic. |
| High noise immunity | Typical noise margin > 0.8 V at VCC = 5 V - Resists EMI-induced glitches in electrically noisy factory-floor environments. |
| ESD protection | HBM > 2000 V, CDM > 1000 V - Reduces risk of handling damage during manual assembly or field maintenance. |
| Wide temperature operation | Specified from -40 °C to +125 °C - Validated for use in uncooled industrial controllers exposed to ambient thermal cycling. |
Applications
| Industrial PLC I/O Expansion | Legacy Microcontroller Bus Isolation |
|---|---|
|
Use Scenario: Adding isolated digital input/output channels to a main PLC CPU board using ribbon-cable-connected expansion modules. IC Role / Device Role / Timing Role: Inverting 3-state buffer isolating CPU GPIOs from field-side 24 V digital signals via optocouplers and level shifters. Use Value: Dual OE inputs allow independent enable of input-sampling and output-driving sections, reducing bus contention during state transitions. |
Use Scenario: Interfacing an 8-bit 8051 microcontroller to a parallel EEPROM and LCD controller on a shared data bus. IC Role / Device Role / Timing Role: Hex inverting buffer providing direction-controlled data path isolation between MCU and peripherals. Use Value: Guaranteed 5 V TTL compatibility eliminates external pull-up resistors and reduces BOM count versus discrete transistor solutions. |
| Programmable Logic Interface | Test Equipment Signal Conditioning |
|
Use Scenario: Driving configurable logic blocks (CLBs) in a CPLD-based test sequencer where signal polarity must be inverted per channel. IC Role / Device Role / Timing Role: Inverting line driver translating FPGA I/O voltages to robust 5 V logic levels for external DUT interface. Use Value: 36 ns max propagation delay at 125 °C ensures setup/hold timing margins are maintained across full industrial temperature range. |
Use Scenario: Buffering and conditioning TTL-level trigger and clock signals inside automated test equipment (ATE) mainframes. IC Role / Device Role / Timing Role: 3-state buffer enabling dynamic reconfiguration of signal routing paths without hardware changes. Use Value: ≤53 ns enable/disable time supports sub-20 MHz bus switching rates required for multi-site parallel testing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar hex inverting 3-state buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74HCT366D,118 | Identical electrical specs and pinout; differs only in packaging - SO16 (SOT109-1) vs. TSSOP16 (SOT403-1) footprint. | Requires PCB redesign for surface-mount land pattern; no change in thermal or electrical performance. | Select for space-constrained layouts where 4.4 mm body width is critical; verify solder paste volume for fine-pitch TSSOP reflow. |
| SN74HCT366N | Dual-in-line package (DIP-16); same logic function but higher parasitic inductance and no thermal pad; max operating temp limited to +70 °C. | Suitable only for lab prototypes or low-density through-hole boards; not rated for industrial temperature cycling. | Choose only for breadboard evaluation or legacy repair; avoid for production designs requiring -40 °C to +125 °C operation. |
Compared with 74HCT366D,118, the 74HCT366DB,118 offers identical functionality in a standardized SO16 package optimized for automated assembly, while SN74HCT366N trades industrial reliability for prototyping convenience - making the DB variant the default choice for volume industrial deployments.
Availability
74HCT366DB,118 is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, legacy microcontroller bus isolation, and programmable logic interface applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74HCT366DB,118 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 for automotive, industrial, and consumer markets.
The 74HCT366DB,118 belongs to Nexperia's 74HCT logic family, engineered specifically for reliable 5 V TTL-to-CMOS interfacing in harsh industrial environments with guaranteed operation from -40 °C to +125 °C.
FAQ
What is the maximum recommended supply voltage for 74HCT366DB,118?
The absolute maximum supply voltage is +7 V, but the recommended operating range is strictly 4.5 V to 5.5 V. Operation above 5.5 V voids guaranteed timing, voltage threshold, and DC parametric specifications per Nexperia's Product Data Sheet Rev. 7. Exceeding 5.5 V risks accelerated parametric drift and reduced long-term reliability.
Can 74HCT366DB,118 drive a 100 pF load reliably?
No - the datasheet specifies dynamic characteristics (propagation delay, transition time) only for CL = 15 pF and 50 pF. Driving 100 pF will increase tpd and tt beyond published limits (e.g., tpd may exceed 50 ns), potentially violating setup/hold timing in synchronous systems. Use a lower-capacitance layout or add a dedicated line driver stage.
Is there a non-inverting version of this device?
Yes - the 74HCT367DB,118 is the functional complement: hex non-inverting 3-state buffer with identical pinout, electrical specs, and package. It shares the same dual-OE architecture and -40 °C to +125 °C rating, enabling drop-in replacement where signal polarity must be preserved.
Does 74HCT366DB,118 require external pull-up resistors on its inputs?
No - its TTL-compatible inputs have built-in threshold circuitry and clamp diodes. Inputs are fully specified for direct connection to 5 V logic outputs (e.g., 74LS, 74F, or microcontroller GPIOs) without external biasing. Pull-ups are unnecessary and may distort VIH/VIL margins.
74HCT366DB,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74HCT
- Package/Case:
- 16-SSOP (0.209", 5.30mm Width)
- Packaging:
- Bulk
- 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:
- 6mA, 6mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SSOP
74HCT366DB,118 FAQ
1.How can I place an order for 74HCT366DB,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HCT366DB,118 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 74HCT366DB,118 reliable?
The price and inventory of 74HCT366DB,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HCT366DB,118 is usually 5 days.
3.What payment methods are accepted for 74HCT366DB,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HCT366DB,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HCT366DB,118?
74HCT366DB,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HCT366DB,118 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 74HCT366DB,118?
For technical support, including 74HCT366DB,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HCT366DB,118 requirements.
6.How does Aetrix verify that 74HCT366DB,118 is sourced from the original manufacturer or authorized distributors?
All 74HCT366DB,118 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 74HCT366DB,118 meets industry standards.
7.What is the process for return or replacement of 74HCT366DB,118?
All 74HCT366DB,118 units undergo pre-shipment inspection (PSI). If there is an issue with 74HCT366DB,118, 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 74HCT366DB,118 part is unused and in its original packaging.
Return procedure for 74HCT366DB,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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