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Texas Instruments SN74HC365D
- Part No.:
- SN74HC365D
- Manufacturer:
- Texas Instruments
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SN74HC365D.pdf
- Description:
- IC BUFFER NON-INVERT 6V 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,192
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Product details
Overview
SN74HC365D from Texas Instruments is a hex noninverting buffer/line driver with dual 3-state outputs, designed for bus interface and memory address buffering in industrial and embedded systems. It operates from 2 V to 6 V, delivers ±6 mA output drive at 5 V, exhibits typical propagation delay of 10 ns, and draws ≤80 µA quiescent current - enabling low-power, high-density bus driving in mixed-voltage logic systems.
For engineers reviewing the SN74HC365D datasheet, SN74HC365D pinout, SN74HC365D application, or SN74HC365D equivalent, key selection criteria include its dual OE control architecture, SOIC-16 package compatibility, 3-state output timing (ten/tdis), voltage-level translation capability across 2–6 V, and direct replacement suitability for legacy HC365-based bus drivers.
Technical Context
The SN74HC365D implements six independent CMOS buffer channels, each with true (noninverting) output logic and dual-gated 3-state enable control via OE1 and OE2 pins. Outputs enter high-impedance state when either OE1 or OE2 is high, allowing flexible bus arbitration across two independent groups of three buffers.
Its design supports TTL-load compatibility (up to 15 LSTTL loads), features low input current (≤1 µA), and maintains stable switching characteristics over −40°C to +85°C - making it suitable for noise-sensitive digital interfaces where output contention avoidance and voltage-level flexibility are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 6 V - enables interoperability between 3.3 V and 5 V logic domains without level shifters. |
| Output Drive Capability | ±6 mA at 5 V - sufficient to directly drive 15 LSTTL loads or terminate short PCB traces. |
| Propagation Delay (tpd) | 10 ns typical at VCC = 4.5 V, CL = 50 pF - ensures timing compliance in medium-speed bus applications up to ~50 MHz. |
| Quiescent Current (ICC) | ≤80 µA max - minimizes static power in always-on control logic or battery-backed subsystems. |
| Input Leakage Current | ≤1 µA max - prevents unintended logic transitions on unterminated or high-impedance control lines. |
| 3-State Enable/Disable Time | ten = 24 ns, tdis = 41 ns typical at VCC = 6 V - defines minimum bus turnaround window for bidirectional data transfer. |
| Operating Temperature | −40°C to +85°C - qualified for industrial-grade operation without derating. |
Pinout & Package
SN74HC365D is housed in a 16-pin SOIC (Small Outline Integrated Circuit) package measuring 9.90 mm × 3.90 mm, with standard 1.27 mm lead pitch and gull-wing leads compatible with IPC-7351 land patterns.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6 (A1–A6) | Buffer Input | Noninverting data inputs for six independent buffer channels. |
| 7, 8, 9, 10, 11, 12 (Y1–Y6) | Buffer Output | True (noninverted) 3-state outputs; high-impedance when OE1 or OE2 = high. |
| 13 (OE1) | Output Enable 1 | Active-low enable for Y1–Y3; controls first group of three buffers. |
| 14 (GND) | Ground Reference | Primary return path for all I/O and supply currents; must be low-impedance. |
| 15 (VCC) | Power Supply | CMOS supply rail (2–6 V); requires local 0.1 µF bypass capacitor per device. |
| 16 (OE2) | Output Enable 2 | Active-low enable for Y4–Y6; controls second group of three buffers. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent 3-state enable control | OE1 and OE2 allow partitioned bus access - Y1–Y3 and Y4–Y6 can be enabled/disabled separately for multi-segment bus architectures. |
| Wide supply voltage range | 2 V to 6 V operation supports direct interfacing with 3.3 V microcontrollers and 5 V peripherals without external level translation. |
| High-current 3-state outputs | ±6 mA drive at 5 V ensures robust signal integrity into capacitive loads up to 50 pF and fan-out to 15 LSTTL inputs. |
| Low power consumption | 80 µA max ICC enables use in power-constrained systems such as remote sensors or portable instrumentation. |
| True output logic | Noninverting behavior simplifies signal routing and eliminates need for logic inversion in address/data path buffering. |
Applications
| Memory Address Buffering | Microcontroller Bus Expansion |
|---|---|
Use Scenario: Driving 16-bit address lines from an MCU to multiple SRAM or flash devices sharing a common data bus. IC Role / Device Role / Timing Role: SN74HC365D acts as a noninverting address latch buffer with 3-state control, isolating address signals during data read/write cycles. Use Value: Prevents bus contention by enabling/disabling address segments via OE1/OE2 while maintaining timing margins under 10 ns propagation delay. | Use Scenario: Expanding GPIO count of an ARM Cortex-M0+ MCU to control eight discrete peripheral enable lines. IC Role / Device Role / Timing Role: SN74HC365D serves as a buffered, 3-state-controlled output expander - each Y output drives one peripheral's chip-select line. Use Value: Enables dynamic peripheral power gating via OE control, reducing system standby current by isolating unused peripherals. |
| Industrial PLC I/O Module | Digital Test Equipment Signal Routing |
Use Scenario: Isolating field-side digital inputs from a PLC's internal 3.3 V logic using optocoupler-compatible voltage levels. IC Role / Device Role / Timing Role: SN74HC365D provides level-shifted, buffered input conditioning - A inputs accept 5 V field signals, Y outputs feed 3.3 V FPGA logic. Use Value: Eliminates need for discrete level translators; 2–6 V supply range accommodates both field-side and logic-side rails. | Use Scenario: Routing test pattern signals from a pattern generator to multiple DUT inputs while preventing back-driving. IC Role / Device Role / Timing Role: SN74HC365D functions as a controllable signal gate - OE1/OE2 synchronize output enable with test vector timing windows. Use Value: Ensures precise signal launch timing (10 ns tpd) and clean bus isolation (high-Z state) between test phases. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar hex buffer with 3-state output applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74HCT365D | TTL-compatible input thresholds (VIH = 2 V min at 4.5 V); identical pinout and output specs. | Better suited for mixed 5 V TTL/CMOS systems where input noise immunity matters more than ultra-low ICC. | Select SN74HCT365D when interfacing with legacy 5 V TTL outputs; otherwise prefer SN74HC365D for lower power and wider VCC range. |
| 74LVC125AD | Quad buffer (4 channels), 1.65–5.5 V operation, lower tpd (5.5 ns typ), but no dual-OE grouping. | Lacks channel grouping - all four outputs share one OE; less flexible for segmented bus control. | Choose 74LVC125AD only when higher speed and smaller footprint are prioritized over independent 3-state control per channel group. |
Compared with SN74HCT365D and 74LVC125AD, the SN74HC365D uniquely balances wide voltage operation, dual-group 3-state control, and industrial temperature support - making it optimal for modular bus designs requiring selective segment enablement and mixed-supply compatibility.
Availability
SN74HC365D is available at Aetrix Electronics and suitable for industrial automation, embedded controller expansion, and test equipment signal routing requiring stable component supply and long-term obsolescence management.
Supply support for SN74HC365D 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 decades of heritage in industry-standard logic families.
The SN74HC365D belongs to TI's 74HC high-speed CMOS logic product line, engineered for low-power, high-noise-immunity digital interfacing in industrial, automotive, and communications equipment.
FAQ
What is the maximum operating temperature for the SN74HC365D?
The SN74HC365D is rated for operation from −40°C to +85°C ambient temperature. This industrial-grade specification is confirmed in Section 5.2 of the official TI datasheet SCLS308E, and applies specifically to the SN74HC365D variant in SOIC (D) package. Thermal performance remains stable within this range without derating, supporting deployment in factory-floor controllers and outdoor-rated electronics where thermal cycling occurs.
Does the SN74HC365D support 3.3 V logic levels?
Yes, the SN74HC365D fully supports 3.3 V logic operation. Its recommended VCC range is 2 V to 6 V, and input thresholds scale proportionally - VIH = 2.0 V min and VIL = 0.8 V max at VCC = 3.3 V (per Section 5.2). The SN74HC365D drives 3.3 V-compatible outputs with VOH ≥ 3.1 V and VOL ≤ 0.33 V under 4 mA load, ensuring reliable interfacing with modern microcontrollers and FPGAs.
How are the output-enable pins OE1 and OE2 used in the SN74HC365D?
In the SN74HC365D, OE1 controls Y1–Y3 and OE2 controls Y4–Y6 - both are active-low inputs. When either OE1 or OE2 is high, its corresponding group enters high-impedance state regardless of input values. Only when both OE1 and OE2 are low do all six outputs pass noninverted A-input signals to Y-outputs. This dual-OE architecture enables independent bus segment control, as documented in Table 7-1 and Figure 7-1 of the SN74HC365D datasheet.
Can the SN74HC365D replace older 74LS365 devices?
The SN74HC365D is functionally compatible with 74LS365 but not a direct drop-in replacement due to differing input thresholds and output drive strength. While pinout matches, the SN74HC365D uses CMOS-compatible VIH/VIL (not TTL), and delivers ±6 mA vs. LS's ±8 mA. It is suitable for LS replacement in 5 V systems if input logic levels are verified, but requires validation of timing margins (tpd = 10 ns vs. LS's ~25 ns) and bus loading behavior.
Is the SN74HC365D RoHS compliant?
Yes, the SN74HC365D is RoHS compliant. Per TI's Package Option Addendum (SCLS308E, July 2026), the active orderable variant SN74HC365DR.A carries "Yes" in the RoHS column and uses NiPdAu (NIPDAU) lead finish. The obsolete SN74HC365D variant is also RoHS-compliant per TI's historical compliance records, though current procurement should use DR or DR.A tape-and-reel versions for full environmental certification traceability.
SN74HC365D Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74HC
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- 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-SOIC
SN74HC365D FAQ
1.How can I place an order for SN74HC365D through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74HC365D 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 SN74HC365D reliable?
The price and inventory of SN74HC365D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74HC365D is usually 5 days.
3.What payment methods are accepted for SN74HC365D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74HC365D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74HC365D?
SN74HC365D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74HC365D 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 SN74HC365D?
For technical support, including SN74HC365D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74HC365D requirements.
6.How does Aetrix verify that SN74HC365D is sourced from the original manufacturer or authorized distributors?
All SN74HC365D 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 SN74HC365D meets industry standards.
7.What is the process for return or replacement of SN74HC365D?
All SN74HC365D units undergo pre-shipment inspection (PSI). If there is an issue with SN74HC365D, 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 SN74HC365D part is unused and in its original packaging.
Return procedure for SN74HC365D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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