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NXP Semiconductors 74HCT365D/AUJ
- Part No.:
- 74HCT365D/AUJ
- Manufacturer:
- NXP Semiconductors
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
74HCT365D/AUJ.pdf
- Description:
- IC BUFFER NON-INVERT 5.5V 16SO
- Quantity:
- Payment:
- Shipping:
Inventory:2,800
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Product details
Overview
74HCT365D/AUJ from Nexperia is a hex non-inverting 3-state buffer/line driver with TTL-compatible inputs, operating from 4.5 V to 5.5 V supply, delivering ±6 mA output drive at VCC = 4.5 V, and specified for -40 °C to +125 °C industrial temperature range. It enables bidirectional bus control in digital logic systems where signal isolation and load driving are required.
For engineers reviewing the 74HCT365D/AUJ datasheet, 74HCT365D/AUJ pinout, 74HCT365D/AUJ application, or 74HCT365D/AUJ equivalent, key selection criteria include TTL-level input compatibility, dual active-low output enable (OE1/OE2), SO16 package footprint, propagation delay ≤25 ns at 4.5 V, and high-impedance output leakage <±10 μA at 5.5 V.
Technical Context
The 74HCT365D/AUJ implements six independent non-inverting buffers, each with dedicated input and output terminals, controlled by two shared active-low 3-state enable inputs (OE1 on Pin 1, OE2 on Pin 15). Its TTL-compatible input thresholds (VIH = 2.0 V min, VIL = 0.8 V max at VCC = 4.5–5.5 V) ensure direct interfacing with legacy 5 V logic families without level shifting.
Each buffer supports rail-to-rail output swing under load (VOH ≥ 3.7 V, VOL ≤ 0.4 V at IO = ±6 mA, VCC = 4.5 V), and features input clamp diodes enabling safe interface to voltages exceeding VCC when used with current-limiting resistors. The device complies with JEDEC JESD7A and JESD8C standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply voltage | 4.5 V to 5.5 V - Matches standard 5 V TTL systems; avoids level translation in mixed-voltage boards. |
| Input threshold (VIH/VIL) | 2.0 V / 0.8 V min/max at VCC = 4.5–5.5 V - Ensures reliable recognition of TTL logic levels without external biasing. |
| Output drive (IO) | ±6.0 mA - Sufficient to drive 10 LSTTL loads or terminate short PCB traces without buffering. |
| Propagation delay (tpd) | ≤38 ns max at VCC = 4.5 V, Tamb = -40 °C to +125 °C - Supports reliable operation in high-noise industrial timing paths up to ~10 MHz. |
| 3-state leakage (IOZ) | ±10.0 μA max at VCC = 5.5 V - Minimizes bus contention current during output disable, critical for multi-driver shared-bus integrity. |
| Operating temperature | -40 °C to +125 °C - Qualified for under-hood, motor control, and industrial PLC environments without derating. |
| Package | SO16 (SOT109-1), 3.9 mm body width - Industry-standard footprint compatible with automated assembly and legacy board layouts. |
Pinout & Package
74HCT365D/AUJ uses the SO16 plastic small outline package (SOT109-1), 16-pin, 3.9 mm body width, with gull-wing leads and standard 1.27 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OE1) | Output enable 1 (active LOW) | Controls buffers 1Y–3Y; LOW enables outputs, HIGH places them in high-impedance state. |
| 2 (1A) | Data input 1 | Non-inverting input for first buffer; accepts TTL-level signals directly. |
| 3 (1Y) | Data output 1 | Buffered, non-inverting output corresponding to 1A; drives loads up to ±6 mA. |
| 4 (2A) | Data input 2 | Input for second buffer; electrically isolated from other inputs. |
| 5 (2Y) | Data output 2 | Output for second buffer; shares no internal path with other outputs. |
| 6 (3A) | Data input 3 | Input for third buffer; part of first OE1 group (Pins 1–3, 4–5, 6–7). |
| 7 (3Y) | Data output 3 | Third output under OE1 control; enables grouped bus enable/disable. |
| 8 (GND) | Ground reference | 0 V return for all logic and power paths; must be low-impedance for noise immunity. |
| 9 (4Y) | Data output 4 | First output under OE2 control (Pins 9–10, 11–12, 13–14); allows independent bus segment control. |
| 10 (4A) | Data input 4 | Input for fourth buffer; paired with 4Y and controlled by OE2. |
| 11 (5Y) | Data output 5 | Fifth output under OE2; supports dual-bank bus arbitration schemes. |
| 12 (5A) | Data input 5 | Input for fifth buffer; matches 5Y and OE2 timing behavior. |
| 13 (6Y) | Data output 6 | Sixth and final output, OE2-controlled; completes full hex buffer set. |
| 14 (6A) | Data input 6 | Input for sixth buffer; completes input set for all six channels. |
| 15 (OE2) | Output enable 2 (active LOW) | Independent control for outputs 4Y–6Y; enables split-bus or mirrored enable logic. |
| 16 (VCC) | Positive supply | 4.5–5.5 V power rail; decoupling capacitor (100 nF) required near Pin 16 for stable switching. |
Key Features
| Feature | Design Value |
|---|---|
| TTL-compatible inputs | VIH ≥ 2.0 V and VIL ≤ 0.8 V at 4.5–5.5 V - Eliminates need for external level shifters when interfacing with 74LS, 74F, or microcontroller GPIOs. |
| Dual 3-state enable inputs | OE1 controls outputs 1Y–3Y; OE2 controls 4Y–6Y - Enables independent control of two 3-bit data groups on shared buses. |
| High noise immunity | CMOS input structure with hysteresis-free TTL thresholds and >1.2 V noise margin - Resists EMI in industrial motor-drive and power-conversion PCBs. |
| Input clamp diodes | Integrated diodes to VCC and GND - Allows safe connection of inputs to voltages up to VCC + 0.5 V using series current-limiting resistors. |
| Latch-up immunity | Exceeds 100 mA per JESD78 Class II Level B - Prevents destructive latch-up during transient overvoltage events in unregulated power domains. |
Applications
| Industrial Bus Isolation | Legacy System Interface |
|---|---|
Use Scenario: Isolating microcontroller GPIOs from noisy 24 V I/O modules in PLC backplanes. IC Role / Device Role / Timing Role: Hex buffer provides galvanic separation via 3-state control while preserving signal polarity and timing integrity. Use Value: Enables clean read/write cycles on shared address/data buses without cross-talk, leveraging OE1/OE2 for bank-select arbitration. |
Use Scenario: Interfacing modern ARM-based controllers with legacy 74LS TTL peripherals in test equipment. IC Role / Device Role / Timing Role: Level-shifting buffer translates 3.3 V logic outputs to robust 5 V TTL-compatible signals without external resistors. Use Value: VIH/VIL thresholds match LS-family specs, eliminating setup/hold violations and ensuring deterministic sampling at ≤10 MHz. |
| Motor Control Signal Distribution | Multi-Sensor Data Aggregation |
Use Scenario: Driving six independent gate drivers or optocouplers in BLDC inverter control boards. IC Role / Device Role / Timing Role: Non-inverting line driver delivers synchronized PWM signals with matched propagation delay across all channels. Use Value: ≤38 ns max tpd variation ensures phase alignment between motor phases; ±6 mA drive sustains opto-LED forward current. |
Use Scenario: Consolidating analog sensor outputs (via ADCs) onto a single SPI or parallel bus before MCU ingestion. IC Role / Device Role / Timing Role: 3-state buffer isolates inactive ADCs to prevent loading and crosstalk on shared data lines. Use Value: Dual OE inputs allow time-multiplexed readout of two sensor banks, reducing MCU pin count and PCB routing complexity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar hex buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74HCT365PW | TSSOP16 package (SOT403-1), 4.4 mm body width, same electrical specs | Higher density layout; requires finer-pitch reflow profile and inspection | Select for space-constrained designs where SO16 footprint is unavailable; verify thermal relief for 125 °C operation. |
| SN74HCT365N | PDIP-16 package, through-hole mounting, wider 6.35 mm body, identical logic and DC specs | Prototyping and low-volume production; incompatible with SMT assembly lines | Choose for lab validation, educational kits, or legacy repair where SO16 soldering is impractical. |
Compared with 74HCT365D/AUJ, the 74HCT365PW offers identical functionality in a smaller TSSOP package ideal for compact layouts, while the SN74HCT365N provides through-hole compatibility for manual assembly-neither is pin-compatible with the SO16 variant due to differing mechanical form factors.
Availability
74HCT365D/AUJ is available at Aetrix Electronics and suitable for industrial automation, motor control, and legacy system integration requiring stable component supply, extended temperature support, and long-term obsolescence management.
Supply support for 74HCT365D/AUJ 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, discrete, and MOSFET solutions for automotive, industrial, and consumer markets.
The 74HCT365D/AUJ belongs to Nexperia's 74HCT logic family, engineered for TTL-to-CMOS bridging in industrial-grade applications demanding robustness, wide temperature operation, and strict JEDEC compliance.
FAQ
What is the maximum supply voltage rating for the 74HCT365D/AUJ?
The absolute maximum supply voltage (VCC) for the 74HCT365D/AUJ is +7.0 V, but the recommended operating range is strictly 4.5 V to 5.5 V. Operating above 5.5 V may cause excessive ICC current, violate static characteristics, and reduce long-term reliability-even if within absolute maximum limits. Always use 5.0 V ±5 % for nominal operation.
Does the 74HCT365D/AUJ support 3.3 V logic inputs?
No-the 74HCT365D/AUJ has TTL-compatible input thresholds (VIH ≥ 2.0 V, VIL ≤ 0.8 V at VCC = 4.5–5.5 V), not 3.3 V CMOS levels. A 3.3 V HIGH signal may fall below the guaranteed VIH minimum and result in indeterminate output states. For 3.3 V interfaces, use the 74HC365 variant or add a level shifter.
How are the output enable inputs (OE1 and OE2) functionally organized on the 74HCT365D/AUJ?
OE1 (Pin 1) controls outputs 1Y, 2Y, and 3Y; OE2 (Pin 15) controls outputs 4Y, 5Y, and 6Y. Both are active-LOW: pulling either enable LOW activates its associated three outputs, while pulling it HIGH places those outputs in high-impedance state. This allows independent control of two logical bus segments.
What is the typical propagation delay of the 74HCT365D/AUJ at 5 V and 25 °C?
At VCC = 5.0 V, Tamb = 25 °C, and CL = 15 pF, the typical propagation delay (tpd) of the 74HCT365D/AUJ is 11 ns (nA to nY path). This value is confirmed in Table 9 of the Nexperia datasheet and reflects consistent timing across all six buffers under nominal conditions.
Can the 74HCT365D/AUJ be used in automotive applications?
No-the 74HCT365D/AUJ is not automotive-qualified. It is rated for -40 °C to +125 °C operation but lacks AEC-Q100 qualification, automotive-specific stress testing, and PPAP documentation. For automotive use, select Nexperia's automotive-grade equivalents such as the 74HCT365DP-Q100.
74HCT365D/AUJ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74HCT
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- Buffer, Non-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-SO
74HCT365D/AUJ FAQ
1.How can I place an order for 74HCT365D/AUJ through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HCT365D/AUJ 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 74HCT365D/AUJ reliable?
The price and inventory of 74HCT365D/AUJ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HCT365D/AUJ is usually 5 days.
3.What payment methods are accepted for 74HCT365D/AUJ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HCT365D/AUJ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HCT365D/AUJ?
74HCT365D/AUJ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HCT365D/AUJ 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 74HCT365D/AUJ?
For technical support, including 74HCT365D/AUJ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HCT365D/AUJ requirements.
6.How does Aetrix verify that 74HCT365D/AUJ is sourced from the original manufacturer or authorized distributors?
All 74HCT365D/AUJ 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 74HCT365D/AUJ meets industry standards.
7.What is the process for return or replacement of 74HCT365D/AUJ?
All 74HCT365D/AUJ units undergo pre-shipment inspection (PSI). If there is an issue with 74HCT365D/AUJ, 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 74HCT365D/AUJ part is unused and in its original packaging.
Return procedure for 74HCT365D/AUJ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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