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Texas Instruments CD74HC366E
- Part No.:
- CD74HC366E
- Manufacturer:
- Texas Instruments
- Package:
- 16-DIP (0.300", 7.62mm)
- Datasheet:
-
CD74HC366E.pdf
- Description:
- IC BUFFER INVERT 6V 16DIP
- Quantity:
- Payment:
- Shipping:
Inventory:881
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Product details
Overview
CD74HC366E 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, instrumentation, and digital logic systems. It features non-inverting enable logic (active-low OE1/OE2), 6 independent inverting channels, 8 ns typical propagation delay at 5 V/15 pF, ±25 mA output drive, and operation across –55°C to +125°C.
For engineers reviewing the CD74HC366E datasheet, CD74HC366E pinout, CD74HC366E application, or CD74HC366E equivalent, this page delivers verified electrical specs, thermal limits, real-world bus-driving capability, functional mode behavior under three-state control, and precise package dimensions for PDIP-16 layout integration.
Technical Context
The CD74HC366E implements six independent inverting buffer gates, each with high-current CMOS outputs capable of driving up to 15 LSTTL loads. Its dual active-low output-enable inputs (OE1, OE2) are internally NORed to simultaneously place all six outputs in high-impedance state when either is asserted.
It operates within a 2 V to 6 V supply range, exhibits balanced tPLH/tPHL propagation delays (9 ns typ. at 5 V/15 pF), and maintains robust noise immunity (NIL/NIL = 30% of VCC at 5 V). Input leakage remains ≤±1 µA over full temperature range, and three-state leakage is ≤±10 µA.
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 mixed-voltage system interfacing and low-power operation down to 2 V |
| Propagation Delay (tPLH/tPHL) | 9 ns typical at VCC = 5 V, CL = 15 pF - ensures timing-critical bus handshaking in high-speed digital systems |
| Output Drive Capability | ±25 mA per output - drives heavy capacitive loads (e.g., >100 pF buses) without signal degradation |
| Operating Temperature | –55°C to +125°C - qualified for extended industrial, aerospace, and automotive under-hood environments |
| Input Leakage Current | ≤±1 µA at TA = –55°C to +125°C - prevents unintended logic transitions in high-impedance or battery-powered circuits |
| Three-State Leakage | ≤±10 µA at VO = VCC or GND - minimizes bus contention current during high-Z state in shared-data-path designs |
Pinout & Package
CD74HC366E is housed in a 16-pin plastic dual in-line package (PDIP-N), with nominal body size 19.30 mm × 6.35 mm and 2.54 mm lead pitch. The package is RoHS-compliant with NiPdAu lead finish and rated for through-hole mounting.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 15 | OE1, OE2 | Active-low output enable inputs - NOR logic controls all six outputs; assertion places outputs in high-impedance state |
| 2, 4, 6, 10, 12, 14 | 1A–6A | Inverting input terminals - each drives corresponding Y output with logical inversion |
| 3, 5, 7, 9, 11, 13 | 1Y–6Y | Inverting buffered outputs - deliver rail-to-rail CMOS levels with ±25 mA sink/source capability |
| 8 | GND | Ground reference - must be connected to system common ground plane for stable noise margin and switching performance |
| 16 | VCC | Positive supply - decoupling capacitor (0.1 µF ceramic) required adjacent to pin for transient current handling |
Key Features
| Feature | Design Value |
|---|---|
| High-current bus driver outputs | ±25 mA per channel - sustains fast edge rates into 50 pF loads while meeting TTL fanout (15 LSTTL) requirements |
| Three-state output control | Dual active-low OE inputs (OE1/OE2) with internal NOR logic - simplifies bus arbitration without external gating logic |
| Wide supply voltage range | 2 V to 6 V operation - enables interoperability with 3.3 V microcontrollers and legacy 5 V logic subsystems |
| Low power consumption | ICC ≤ 160 µA max at –55°C to +125°C - reduces thermal load in dense PCB layouts and extends battery life in portable instruments |
| High noise immunity | NIL/NIL = 30% of VCC at 5 V - rejects EMI in electrically noisy industrial environments without additional filtering |
Applications
| Industrial PLC I/O Expansion | Test Equipment Signal Routing |
|---|---|
Use Scenario: Expanding digital input/output capacity in programmable logic controllers using shared backplane buses. IC Role / Device Role / Timing Role: Inverting three-state buffer isolating CPU data bus from field I/O modules; enables hot-swap-safe module insertion/removal. Use Value: Prevents bus contention during module replacement via OE-controlled high-Z state, while maintaining 9 ns timing integrity across 16-bit parallel interfaces. |
Use Scenario: Multiplexing stimulus signals between multiple DUTs in automated test equipment with shared signal sources. IC Role / Device Role / Timing Role: Hex inverting buffer driving calibrated analog/digital stimulus paths; OE pins synchronized to test sequence controller. Use Value: Delivers clean, low-jitter inverted logic edges to DUTs with <10 ns skew across all six channels, critical for timing-sensitive parametric testing. |
| Military Data Acquisition Systems | Automotive Body Control Modules |
Use Scenario: Interfacing radiation-hardened ADCs and FPGAs in airborne telemetry systems operating across extreme temperature ranges. IC Role / Device Role / Timing Role: Bus isolation buffer between sensor front-end and processing unit; operates reliably from –55°C to +125°C without derating. Use Value: Maintains <±1 µA input leakage and <±10 µA three-state leakage over full military temp range, eliminating false triggers in low-power sleep modes. |
Use Scenario: Level-shifting and buffering switch inputs (door locks, window switches) to 3.3 V MCU GPIOs in vehicle body electronics. IC Role / Device Role / Timing Role: Inverting interface buffer converting 12 V switch signals to MCU-compatible logic; powered from 5 V rail. Use Value: Tolerates 2 V–6 V supply variation and provides 30% noise margin - suppresses alternator ripple and load-dump transients without external clamping. |
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 |
|---|---|---|---|
| SN74HC366N | Same logic function, pinout, and DC specs; propagation delay 10 ns (typ.) at 5 V/15 pF - 1 ns slower than CD74HC366E | Qualified per JEDEC JESD48; lacks military temp range (–40°C to +85°C only) | Select SN74HC366N for commercial-grade cost-sensitive designs where extended temperature is not required. |
| CD74HCT366E | LSTTL-compatible inputs (VIH = 2 V min, VIL = 0.8 V max); identical pinout and AC specs but narrower 4.5–5.5 V supply range | Required when interfacing directly with legacy 5 V TTL outputs without level translation | Choose CD74HCT366E only when driven by standard TTL logic; otherwise CD74HC366E offers broader voltage flexibility. |
Compared with SN74HC366N and CD74HCT366E, the CD74HC366E uniquely combines –55°C to +125°C operation, 2–6 V supply adaptability, and 9 ns propagation delay - making it optimal for ruggedized embedded systems requiring wide environmental tolerance and mixed-voltage compatibility.
Availability
CD74HC366E is available at Aetrix Electronics and suitable for industrial automation, aerospace data acquisition, and automotive body control applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for CD74HC366E 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 solutions, with decades of heritage in high-reliability logic families and industrial-grade IC design.
The CD74HC366E belongs to TI's CD74HC high-speed CMOS logic family, engineered for robust performance in harsh environments - emphasizing wide temperature operation, low power, and bus-interface reliability in mission-critical systems.
FAQ
What is the maximum clock/data rate supported by CD74HC366E?
The CD74HC366E is not a clocked device but a combinational buffer; its usable data rate depends on propagation delay and load. With 9 ns typical tPLH/tPHL at 5 V/15 pF and 15 pF output capacitance, it supports clean signal transmission up to ~35 MHz for repetitive toggling - verified by measured transition times (tTLH/tTHL ≤15 ns at 5 V).
Can CD74HC366E drive a 50 pF bus capacitance while maintaining timing specs?
Yes. At VCC = 5 V and CL = 50 pF, CD74HC366E maintains tPLH/tPHL ≤24 ns (max) across –55°C to +125°C, per TI's SCHS180D datasheet Section 5.6. Its ±25 mA drive strength ensures minimal rise/fall time degradation even under this load.
Is CD74HC366E pin-compatible with CD74HCT366E?
Yes - CD74HC366E and CD74HCT366E share identical PDIP-16 pinout, pin functions, and logic behavior. However, CD74HCT366E requires 4.5–5.5 V supply and accepts TTL-level inputs, whereas CD74HC366E operates from 2–6 V and uses CMOS input thresholds.
Does CD74HC366E require external pull-up or pull-down resistors on unused inputs?
Yes. Per TI's layout guidelines (Section 9.1), all unused inputs must be terminated to VCC or GND to prevent floating states. For CD74HC366E, tie unused A inputs to GND (to force Y = HIGH-Z when OE inactive) or VCC (to force Y = LOW when OE active), depending on functional intent.
What is the thermal resistance (RθJA) of CD74HC366E in PDIP package?
The junction-to-ambient thermal resistance RθJA for CD74HC366E in PDIP (N) package is 67°C/W, as specified in Section 5.3 of the datasheet. This value assumes standard JEDEC 2-layer board conditions and guides heatsinking decisions for continuous high-current operation.
CD74HC366E Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74HC
- Package/Case:
- 16-DIP (0.300", 7.62mm)
- 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:
- 7.8mA, 7.8mA
- Voltage - Supply:
- 2V ~ 6V
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 16-PDIP
CD74HC366E FAQ
1.How can I place an order for CD74HC366E through Aetrix?
Please submit a Request for Quotation (RFQ) for CD74HC366E 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 CD74HC366E reliable?
The price and inventory of CD74HC366E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CD74HC366E is usually 5 days.
3.What payment methods are accepted for CD74HC366E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CD74HC366E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CD74HC366E?
CD74HC366E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CD74HC366E 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 CD74HC366E?
For technical support, including CD74HC366E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CD74HC366E requirements.
6.How does Aetrix verify that CD74HC366E is sourced from the original manufacturer or authorized distributors?
All CD74HC366E 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 CD74HC366E meets industry standards.
7.What is the process for return or replacement of CD74HC366E?
All CD74HC366E units undergo pre-shipment inspection (PSI). If there is an issue with CD74HC366E, 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 CD74HC366E part is unused and in its original packaging.
Return procedure for CD74HC366E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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