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Texas Instruments SN74HC365NSR
- Part No.:
- SN74HC365NSR
- Manufacturer:
- Texas Instruments
- Package:
- 16-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
SN74HC365NSR.pdf
- Description:
- IC BUFFER NON-INVERT 6V 16SO
- Quantity:
- Payment:
- Shipping:
Inventory:1,998
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Product details
Overview
SN74HC365NSR from Texas Instruments is a hex noninverting 3-state buffer/driver IC designed for bus interface, memory address driving, and clock distribution. It operates from 2 V to 6 V, delivers ±6 mA output drive at 5 V, features typical propagation delay of 10 ns, and consumes ≤80 µA ICC (max) - enabling low-power, high-density digital system interfacing in industrial control and embedded data paths.
For engineers reviewing the SN74HC365NSR datasheet, SN74HC365NSR pinout, SN74HC365NSR application, or SN74HC365NSR equivalent, key selection criteria include dual-gated 3-state control (OE1/OE2), true (noninverting) logic behavior, guaranteed 15-LSTTL load drive capability, and SO package thermal performance (θJA = 64°C/W).
Technical Context
The SN74HC365NSR implements six independent CMOS buffer channels with dual active-low output-enable inputs (OE1 and OE2). Both enables must be low for noninverted A→Y data transfer; either high forces Y into high-impedance state - supporting bidirectional bus arbitration without external logic.
Its HC-series silicon ensures compatibility with TTL input thresholds while delivering CMOS power efficiency. Input transition time limits (400–1000 ns) and specified VOL/VOH across 2–6 V supply ensure robust noise margin and rail-to-rail switching in mixed-voltage systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2 V to 6 V - supports direct interfacing with 3.3 V and 5 V logic domains without level shifters. |
| Output Drive | ±6 mA at 5 V - drives up to 15 LSTTL loads, sufficient for legacy bus termination and address buffering. |
| Propagation Delay | Typ. 10 ns at VCC = 4.5 V, CL = 50 pF - enables reliable operation in sub-100 MHz synchronous data paths. |
| ICC (Max) | 80 µA at 6 V - ultra-low static current enables use in always-on subsystems and battery-backed logic. |
| Input Current | ≤1 µA max - eliminates need for pull-up/pull-down resistors on unused inputs in high-impedance states. |
| 3-State Enable | Dual-gated OE1/OE2 - requires both low for output enable; single fault on either gate disables all outputs, enhancing system safety. |
Pinout & Package
SN74HC365NSR is housed in a 16-pin SO (Small Outline) package (Package Drawing NS), 5.3 mm × 10.2 mm body, 1.27 mm pitch, RoHS-compliant, moisture sensitivity level 1 (260°C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 15, 2, 3, 4, 5 | A1–A6 Inputs | Noninverting data inputs; accept standard CMOS/TTL logic levels (VIH ≥ 3.15 V @ 4.5 V). |
| 2, 3, 4, 5, 6, 7 | Y1–Y6 Outputs | True (noninverting) 3-state outputs; high-Z when OE1 or OE2 is high; drive capability ±6 mA @ 5 V. |
| 14, 13 | OE1, OE2 | Active-low dual output-enable controls; both must be low for output assertion - prevents bus contention during power-up/down. |
| 8 | GND | Ground reference for all I/O and internal logic; decoupling capacitor required within 10 mm of pin. |
| 16 | VCC | Positive supply (2–6 V); requires local 0.1 µF ceramic bypass capacitor adjacent to pin. |
| 9, 10, 11, 12 | No Connect (NC) | Internally unconnected pins; must remain floating or tied to GND per layout best practice - no routing or loading. |
Key Features
| Feature | Design Value |
|---|---|
| Wide Supply Range | 2 V to 6 V operation enables interoperability across 3.3 V microcontrollers and 5 V legacy peripherals without voltage translation. |
| Dual Output-Enable Logic | OE1 and OE2 both low required for output activation - provides hardware-level fail-safe bus isolation during reset or fault conditions. |
| High-Current 3-State Outputs | ±6 mA drive at 5 V meets LSTTL fan-out requirements, eliminating need for external bus drivers in medium-density address/data paths. |
| Low Power Consumption | 80 µA max ICC allows integration into power-constrained applications such as portable instrumentation and sensor interface modules. |
| Controlled Switching Speed | Specified tpd (10 ns typ.), ten/tdis (21–48 ns), and tt (6–15 ns) ensure predictable timing margins in synchronous designs with 50 pF loads. |
Applications
| Memory Address Buffering | Industrial Bus Interface |
|---|---|
|
Use Scenario: Driving 16-bit address lines from an MCU to multiple parallel EEPROM or SRAM chips in a PLC backplane. IC Role / Device Role / Timing Role: Hex noninverting buffer isolating MCU address outputs and enabling shared bus access via OE1/OE2 gating. Use Value: Prevents address bus contention during chip select transitions; ±6 mA drive ensures signal integrity across 10 cm PCB traces loaded with 3–5 memory devices. |
Use Scenario: Level-shifting and buffering between a 3.3 V ARM Cortex-M4 controller and 5 V industrial I/O expansion modules. IC Role / Device Role / Timing Role: Voltage-tolerant buffer providing bidirectional bus control with dual-OE coordination across mixed-supply domains. Use Value: Eliminates need for discrete level translators; 2–6 V supply range and TTL-compatible inputs simplify interconnect design and reduce BOM count. |
| Legacy Clock Distribution | Test Equipment Signal Conditioning |
|
Use Scenario: Distributing a 25 MHz system clock to multiple FPGA configuration ICs and peripheral controllers in test instrumentation. IC Role / Device Role / Timing Role: Low-skew, noninverting clock driver with 3-state capability for dynamic clock gating during self-test sequences. Use Value: 10 ns typical tpd and <15 ns output transition time maintain setup/hold margins; dual-OE allows synchronized clock disable across all downstream devices. |
Use Scenario: Isolating and conditioning digital stimulus signals from a pattern generator before applying to DUT inputs in automated test equipment. IC Role / Device Role / Timing Role: High-impedance input buffer with controlled drive strength, used to prevent signal reflection and loading on long coaxial cables. Use Value: 64°C/W θJA and 80 µA ICC support dense placement near FPGA I/O banks; NC pins allow clean ground plane routing beneath device body. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar hex buffer/driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74HCT365NSR | CMOS inputs with TTL-compatible thresholds (VIH = 2 V min); identical pinout and function. | Better suited for direct connection to 5 V TTL outputs without level shifting; slightly higher ICC (160 µA max). | Select when interfacing with legacy 5 V TTL logic families where input threshold matching is critical. |
| SN74LVC365APW | 3.3 V only (1.65–3.6 V), lower VCC min, higher speed (tpd = 4.3 ns typ), TSSOP-16 package. | Optimized for modern low-voltage FPGAs and SoCs; not compatible with 5 V buses or wider supply ranges. | Choose for new 3.3 V-only designs requiring faster timing and smaller footprint - not a drop-in replacement for 5 V operation. |
Compared with SN74HC365NSR, SN74HCT365NSR offers tighter input threshold alignment with TTL sources but trades off static power, while SN74LVC365APW delivers superior speed and density at the cost of supply voltage flexibility and 5 V tolerance - making SN74HC365NSR the optimal choice for mixed-voltage, industrial-grade bus buffering where robustness and wide-VCC margin are prioritized.
Availability
SN74HC365NSR is available at Aetrix Electronics and suitable for industrial control systems, legacy bus interface modules, and embedded memory subsystems requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for SN74HC365NSR 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 over 50 years of innovation in industrial, automotive, and communications markets.
The SN74HC365NSR belongs to TI's 74HC logic family - engineered for high noise immunity, low power, and broad supply voltage operation in industrial and commercial digital systems.
FAQ
What is the maximum operating temperature range for the SN74HC365NSR?
The SN74HC365NSR is rated for operation from −40°C to +85°C ambient temperature, meeting industrial-grade environmental requirements. This range is confirmed in the "Recommended Operating Conditions" table of the SCLS308D datasheet and applies specifically to the NSR (SO) package variant. Thermal derating is not required within this range when mounted per JEDEC standards with adequate PCB copper area.
Does the SN74HC365NSR support 3.3 V logic interfaces?
Yes, the SN74HC365NSR fully supports 3.3 V logic interfaces: its 2 V to 6 V supply range includes 3.3 V nominal operation, and its input thresholds (VIH = 2.0 V min at VCC = 3.3 V) are compatible with standard 3.3 V CMOS outputs. The device maintains specified tpd (14 ns typ. at 3.3 V, CL = 50 pF) and output drive (±4 mA) under these conditions.
Are the NC pins on the SN74HC365NSR required to be grounded?
No, the NC pins (pins 9, 10, 11, 12) on the SN74HC365NSR have no internal connection and must remain unconnected - neither grounded nor tied to VCC. Per TI's datasheet note and package drawing NS, routing traces to or placing vias on these pins may cause parasitic coupling or mechanical stress; best practice is to leave them floating and exclude from copper pours.
Can SN74HC365NSR outputs drive a 50 pF capacitive load reliably?
Yes, the SN74HC365NSR is characterized for CL = 50 pF in its switching specifications: typical propagation delay is 10 ns at VCC = 4.5 V, and output transition time (tt) is 6–13 ns across 2–6 V. These values guarantee timing compliance in standard PCB trace environments with ≤50 pF net capacitance, including FR-4 routing and typical connector parasitics.
What is the purpose of having two output-enable inputs (OE1 and OE2) on the SN74HC365NSR?
The dual output-enable inputs (OE1 and OE2) on the SN74HC365NSR require both to be low for output assertion - a hardware AND function that enhances system reliability. This design prevents accidental bus activation during power sequencing or single-point failures; for example, tying OE1 to a system reset signal and OE2 to a peripheral enable flag ensures outputs remain high-Z unless both conditions are simultaneously met.
SN74HC365NSR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74HC
- Package/Case:
- 16-SOIC (0.209", 5.30mm 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:
- 7.8mA, 7.8mA
- Voltage - Supply:
- 2V ~ 6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SO
SN74HC365NSR FAQ
1.How can I place an order for SN74HC365NSR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74HC365NSR 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 SN74HC365NSR reliable?
The price and inventory of SN74HC365NSR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74HC365NSR is usually 5 days.
3.What payment methods are accepted for SN74HC365NSR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74HC365NSR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74HC365NSR?
SN74HC365NSR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74HC365NSR 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 SN74HC365NSR?
For technical support, including SN74HC365NSR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74HC365NSR requirements.
6.How does Aetrix verify that SN74HC365NSR is sourced from the original manufacturer or authorized distributors?
All SN74HC365NSR 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 SN74HC365NSR meets industry standards.
7.What is the process for return or replacement of SN74HC365NSR?
All SN74HC365NSR units undergo pre-shipment inspection (PSI). If there is an issue with SN74HC365NSR, 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 SN74HC365NSR part is unused and in its original packaging.
Return procedure for SN74HC365NSR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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