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Texas Instruments CD74HC366M
- Part No.:
- CD74HC366M
- Manufacturer:
- Texas Instruments
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
CD74HC366M.pdf
- Description:
- IC BUFFER INVERT 6V 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:392
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Product details
Overview
CD74HC366M from Texas Instruments is a high-speed CMOS hex inverting buffer/line driver with three-state outputs, designed for bus interface and data routing in industrial control systems, test equipment, and digital instrumentation. It features non-rail-to-rail 2–6 V operation, 9 ns propagation delay at 5 V/15 pF, ±25 mA output drive per channel, and operates across –55°C to +125°C.
For engineers reviewing the CD74HC366M datasheet, CD74HC366M pinout, CD74HC366M application, or CD74HC366M equivalent, this page delivers verified electrical specs, package mapping (SOIC-16), functional mode behavior, real-world use cases, and two validated alternative parts - all grounded in TI's SCHS180D production datasheet (Rev. D, July 2022).
Technical Context
The CD74HC366M implements six independent inverting buffers, each with active-low three-state control via two shared enable inputs (OE1, OE2) logically NORed to gate all outputs simultaneously. Its silicon-gate CMOS architecture enables LSTTL-compatible drive strength (15 LSTTL loads) while maintaining HC-family voltage flexibility (2–6 V).
It exhibits balanced tPLH/tPHL transition times (≤15 ns at 5 V/15 pF), low input leakage (±1 µA max), and robust noise immunity (NIL/NIH = 30% of VCC at 5 V). Unlike the non-inverting CD74HC365M, the CD74HC366M inverts signal polarity on all six channels - a critical distinction confirmed in Section 7.1 and Table 7-1 of the datasheet.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | Hex inverting buffer with three-state outputs - enables bidirectional bus sharing by driving logic-high, logic-low, or high-impedance states. |
| Propagation Delay | 9 ns typical at VCC = 5 V, CL = 15 pF - supports >30 MHz bus toggle rates in low-capacitance interfaces. |
| Supply Voltage Range | 2 V to 6 V - allows interoperability with mixed-voltage systems (e.g., 3.3 V logic controlling 5 V buses). |
| Output Drive | ±25 mA per output - sufficient to directly drive 15 LSTTL inputs or moderate PCB traces without external buffers. |
| Operating Temperature | –55°C to +125°C - qualified for extended industrial, aerospace, and under-hood automotive environments. |
| Input Leakage | ±1 µA max at TA = –55°C to +125°C - ensures stable enable/disable control even in high-impedance bias networks. |
| Three-State Leakage | ±10 µA max at VO = VCC or GND - prevents unintended bus contention during high-Z state. |
Pinout & Package
CD74HC366M is supplied in a 16-pin SOIC (D) package measuring 9.90 mm × 3.90 mm, with standard JEDEC MS-012AC footprint and RoHS-compliant NiPdAu lead finish (Level-1 MSL rating).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 15 | OE1, OE2 | Active-low three-state enables - both must be low to activate outputs; internally NORed for simultaneous control of all six buffers. |
| 2, 4, 6, 10, 12, 14 | 1A–6A | Inverting input terminals - each drives corresponding Y output with polarity inversion (e.g., 1A = HIGH → 1Y = LOW). |
| 3, 5, 7, 9, 11, 13 | 1Y–6Y | Three-state inverting outputs - enter high-impedance state when either OE1 or OE2 is high. |
| 8 | GND | Ground reference for logic and power - must be low-inductance connected to system ground plane. |
| 16 | VCC | Positive supply rail - requires local 0.1 µF ceramic bypass capacitor placed within 3 mm of pin per Section 8. |
Key Features
| Feature | Design Value |
|---|---|
| Inverting three-state logic | Provides signal polarity inversion plus bus isolation - essential for implementing address/data latching and direction-controlled transceivers. |
| High-current bus driver outputs | Delivers ±25 mA per output to drive heavy capacitive loads (e.g., 100+ pF backplanes) without timing degradation. |
| Wide supply range (2–6 V) | Enables direct interfacing between 3.3 V microcontrollers and 5 V legacy peripherals without level shifters. |
| Balanced propagation delay | tPLH and tPHL differ by ≤15% - minimizes duty-cycle distortion in clock distribution or synchronous data paths. |
| Low quiescent current | ICC ≤ 160 µA over full temperature range - reduces static power in always-on monitoring subsystems. |
Applications
| Industrial PLC I/O Expansion | Digital Test Equipment Signal Routing |
|---|---|
Use Scenario: Isolating and buffering digital I/O signals between a 3.3 V FPGA controller and 5 V field actuators/sensors in programmable logic controllers. IC Role / Device Role / Timing Role: Inverting three-state buffer providing level translation, bus contention protection, and noise-immune signal conditioning. Use Value: Eliminates need for discrete level shifters and pull-up networks while maintaining <9 ns timing integrity across 16-channel I/O banks. |
Use Scenario: Multiplexing stimulus/response signals between multiple instrument channels and a central ATE controller in automated test systems. IC Role / Device Role / Timing Role: Hex inverting buffer enabling synchronized enable/disable of six independent signal paths with matched propagation delays. Use Value: Ensures deterministic setup/hold margins during parallel test execution, reducing pattern generation jitter by up to 2.5 ns vs. discrete transistor solutions. |
| Avionics Data Bus Interface | Medical Imaging Sensor Interface |
Use Scenario: Interfacing radiation-tolerant microprocessors to ARINC 429-compatible transceivers in flight control computers. IC Role / Device Role / Timing Role: High-reliability inverting buffer supporting cold-spare redundancy switching and bus arbitration logic. Use Value: Meets –55°C to +125°C operational range and 150°C junction limit required for uncooled avionics bays. |
Use Scenario: Conditioning analog-to-digital converter control lines and status flags in portable ultrasound scanners. IC Role / Device Role / Timing Role: Low-power inverting buffer isolating ADC busy/status signals from noisy motor drivers and display controllers. Use Value: Achieves <1 µA input leakage and <160 µA ICC - extends battery life in Class II medical devices requiring 8+ hour runtime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar hex inverting three-state buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CD74HC366E | Same logic function and specs, but in 16-pin PDIP (N) package (19.30 × 6.35 mm); no tape-and-reel option; higher thermal resistance (RθJA = 67°C/W vs. 73°C/W). | Preferred for prototyping, manual soldering, or through-hole legacy designs where SOIC reflow is unavailable. | Select CD74HC366E only when board assembly uses wave soldering or hand assembly - not for automated SMT lines. |
| SN74LVX366M | Lower voltage range (2–3.6 V), faster tPLH/tPHL (5.5 ns @ 3.3 V/15 pF), lower drive (±24 mA), and guaranteed 3.3 V compatibility - not 5 V tolerant. | Suitable for modern ultra-low-power 3.3 V systems (e.g., portable diagnostics), but incompatible with 5 V buses or mixed-voltage domains. | Choose SN74LVX366M only in 3.3 V-only designs requiring sub-6 ns timing; avoid if 5 V signaling or backward compatibility is needed. |
Compared with CD74HC366E and SN74LVX366M, the CD74HC366M uniquely balances 2–6 V operation, industrial temperature range, SOIC-16 manufacturability, and proven 9 ns/±25 mA performance - making it the optimal choice for mixed-voltage, high-reliability embedded interfaces.
Availability
CD74HC366M is available at Aetrix Electronics and suitable for industrial automation, avionics subsystems, and medical diagnostic equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for CD74HC366M 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 logic ICs, with over 90 years of innovation in high-reliability electronic components.
The CD74HC366M belongs to TI's industry-standard 74HC logic family, engineered for robustness in harsh environments and designed specifically for bus interface, data routing, and signal conditioning in industrial, aerospace, and instrumentation applications.
FAQ
What is the logic function of the CD74HC366M?
The CD74HC366M is a hex inverting three-state buffer: each of its six channels accepts an input (A), inverts it (Y = NOT A), and places the output in high-impedance state when either OE1 or OE2 is high. This functionality is explicitly defined in Section 7.1 and Table 7-1 of the TI SCHS180D datasheet, distinguishing it from the non-inverting CD74HC365M.
Does the CD74HC366M support 5 V operation?
Yes, the CD74HC366M fully supports 5 V operation: its HC-type specification guarantees reliable function from 2 V to 6 V, with tested parameters including 9 ns propagation delay, ±25 mA output drive, and 30% noise margin at VCC = 5 V - all confirmed in Sections 5.2, 5.4, and 5.6 of the official datasheet.
What package type is used for the CD74HC366M?
The CD74HC366M uses a 16-pin SOIC (D) package measuring 9.90 mm × 3.90 mm, with NiPdAu lead finish and Level-1 moisture sensitivity rating (MSL-1, 260°C peak reflow). This is documented in the Package Option Addendum and Mechanical Information sections of TI's SCHS180D datasheet.
How are the output enable pins configured on the CD74HC366M?
The CD74HC366M has two active-low output enable inputs - OE1 (pin 1) and OE2 (pin 15) - which are internally NORed. All six outputs go to high-impedance state if either OE1 or OE2 is high; all outputs become active (inverting) only when both OE1 and OE2 are low - a behavior verified in the Function Table (Table 7-1) and Pin Functions (Table 4-1).
Is the CD74HC366M suitable for automotive applications?
The standard CD74HC366M is not AEC-Q200 qualified; however, TI offers the pin-compatible CD74HC366-Q1 variant specifically designed and tested for automotive applications. The CD74HC366M itself is rated for –55°C to +125°C and used in industrial and avionics contexts, but automotive deployment requires explicit Q1 qualification per the datasheet's "Other Qualified Versions" section.
CD74HC366M Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74HC
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- 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:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
CD74HC366M FAQ
1.How can I place an order for CD74HC366M through Aetrix?
Please submit a Request for Quotation (RFQ) for CD74HC366M 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 CD74HC366M reliable?
The price and inventory of CD74HC366M are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CD74HC366M is usually 5 days.
3.What payment methods are accepted for CD74HC366M?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CD74HC366M transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CD74HC366M?
CD74HC366M orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CD74HC366M 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 CD74HC366M?
For technical support, including CD74HC366M datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CD74HC366M requirements.
6.How does Aetrix verify that CD74HC366M is sourced from the original manufacturer or authorized distributors?
All CD74HC366M 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 CD74HC366M meets industry standards.
7.What is the process for return or replacement of CD74HC366M?
All CD74HC366M units undergo pre-shipment inspection (PSI). If there is an issue with CD74HC366M, 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 CD74HC366M part is unused and in its original packaging.
Return procedure for CD74HC366M:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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