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Home > Products > Integrated Circuits (ICs) > Logic > Buffers, Drivers, Receivers, Transceivers

Texas Instruments SN74HC365DR

Name: SN74HC365DR
Brand: Texas Instruments
SKU: SN74HC365DR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SN74HC365DR

Manufacturer:: Texas Instruments

Category:: Buffers, Drivers, Receivers, Transceivers

Package:: 16-SOIC (0.154", 3.90mm Width)

Datasheet:: SN74HC365DR.pdf

Description:: IC BUFFER NON-INVERT 6V 16SOIC

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Product details

Overview

SN74HC365DR from Texas Instruments is a hex noninverting 3-state buffer/driver IC designed for bus interface, memory address driving, and clock distribution. It features dual output-enable inputs (OE1/OE2), true (noninverting) outputs, operates from 2 V to 6 V, delivers ±6 mA output drive at 5 V, and achieves typical propagation delay of 10 ns.

For engineers reviewing the SN74HC365DR datasheet, SN74HC365DR pinout, SN74HC365DR application, or SN74HC365DR equivalent, key selection criteria include dual-gated 3-state control logic, high-current bus-driving capability, low ICC (80 µA max), input transition time tolerance (400–1000 ns), and SOIC-16 package compatibility with industrial temperature range (−40°C to 85°C).

Technical Context

The SN74HC365DR implements six independent CMOS buffer channels, each with noninverting logic and dual active-low output-enable control (OE1 and OE2). Both enables must be low for data pass-through; either high forces high-impedance output state.

It uses standard HC-series silicon process with rail-to-rail input voltage thresholds (VIH = 3.15 V @ VCC = 4.5 V, VIL = 1.35 V), supports 50 pF load capacitance, and maintains stable timing across 2–6 V supply - enabling interoperability with LSTTL, CMOS, and mixed-voltage systems.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	2 V to 6 V - supports direct interfacing with 3.3 V and 5 V logic domains without level shifters.
Output Drive Current	±6 mA @ 5 V - sufficient to drive 15 LSTTL loads or terminate short PCB traces on shared buses.
Propagation Delay	10 ns typical @ VCC = 4.5 V, CL = 50 pF - enables reliable operation in sub-100 MHz digital control paths.
Quiescent Current	80 µA max @ VCC = 6 V - ensures low static power in battery-backed or always-on subsystems.
Input Leakage Current	1 µA max - prevents unintended logic transitions when inputs float or connect to high-impedance sources.
3-State Enable Logic	Active-low dual OE (OE1 AND OE2) - provides fault-tolerant bus isolation; either enable high disables all outputs.
Operating Temperature	−40°C to +85°C - qualified for industrial-grade embedded control, instrumentation, and communications equipment.

Pinout & Package

SN74HC365DR is housed in a 16-pin SOIC (D package) with 1.27 mm pitch, JEDEC MS-012AC compliant, RoHS-compliant green finish, and moisture sensitivity level (MSL) 1 (unlimited floor life at ≤30°C/60% RH).

Pin/Terminal	Circuit Role	Design Meaning
1, 15	OE1, OE2	Dual active-low 3-state enable inputs; both must be low for output activation.
2, 4, 5, 7, 9, 12	A1–A6	Noninverting data inputs for six independent buffer channels.
3, 6, 8, 10, 13, 14	Y1–Y6	True (noninverted) buffered outputs; high-impedance when either OE is high.
11	VCC	Positive supply rail (2–6 V); decoupling capacitor required near pin for noise immunity.
16	GND	Ground reference; must be low-inductance connection to minimize switching noise.

Key Features

Feature	Design Value
Wide Supply Range	2 V to 6 V operation enables single-supply use across 3.3 V and 5 V systems without external regulators.
Dual-Gated 3-State Control	Independent OE1/OE2 pins allow hierarchical bus arbitration or redundant enable signaling for fail-safe isolation.
High-Current Outputs	±6 mA drive strength at 5 V meets LSTTL fanout requirements and reduces need for external buffers.
Low Power Consumption	80 µA max ICC allows integration into power-constrained applications like portable test equipment and sensor nodes.
CMOS Input Compatibility	1 µA max II ensures compatibility with high-impedance microcontroller GPIOs and avoids loading sensitive analog sections.

Applications

Memory Address Buffering	Parallel Bus Interface
Use Scenario: Driving address lines from a microcontroller to multiple SRAM or EPROM chips on a shared memory bus. IC Role / Device Role / Timing Role: Noninverting buffer providing current gain and 3-state isolation to prevent bus contention during memory access arbitration. Use Value: Enables clean signal integrity across 15+ LSTTL loads while allowing dynamic bus release via OE control - critical for multi-master memory expansion.	Use Scenario: Interfacing an FPGA I/O bank to legacy parallel peripherals (e.g., LCD controllers, ADC/DAC interfaces). IC Role / Device Role / Timing Role: Level-shifting and fanout buffer with precise 10 ns tpd ensuring setup/hold compliance in 20–50 MHz parallel data transfers. Use Value: Eliminates timing skew between data bits and preserves signal edge rate under capacitive loading - improves data capture reliability.
Industrial I/O Expansion	Programmable Logic Support
Use Scenario: Isolating PLC CPU outputs from field-side relay driver modules using optocoupler input stages. IC Role / Device Role / Timing Role: 3-state buffer acting as programmable gate between controller logic and isolated output stage, controlled by system watchdog or safety logic. Use Value: Dual OE inputs permit hardware-fault-triggered bus disable (e.g., if either OE tied to watchdog reset), enhancing functional safety.	Use Scenario: Feeding clock or control signals from a CPLD to multiple downstream logic blocks in a test fixture or protocol analyzer. IC Role / Device Role / Timing Role: Low-skew, high-drive buffer distributing synchronous enable or strobe signals with minimal added jitter. Use Value: 35 pF typical Cpd and 10 ns tpd ensure predictable clock tree behavior - essential for deterministic timing analysis in logic validation.

Memory Address Buffering

Parallel Bus Interface

Use Scenario: Driving address lines from a microcontroller to multiple SRAM or EPROM chips on a shared memory bus.

IC Role / Device Role / Timing Role: Noninverting buffer providing current gain and 3-state isolation to prevent bus contention during memory access arbitration.

Use Value: Enables clean signal integrity across 15+ LSTTL loads while allowing dynamic bus release via OE control - critical for multi-master memory expansion.

Use Scenario: Interfacing an FPGA I/O bank to legacy parallel peripherals (e.g., LCD controllers, ADC/DAC interfaces).

IC Role / Device Role / Timing Role: Level-shifting and fanout buffer with precise 10 ns tpd ensuring setup/hold compliance in 20–50 MHz parallel data transfers.

Use Value: Eliminates timing skew between data bits and preserves signal edge rate under capacitive loading - improves data capture reliability.

Industrial I/O Expansion

Programmable Logic Support

Use Scenario: Isolating PLC CPU outputs from field-side relay driver modules using optocoupler input stages.

IC Role / Device Role / Timing Role: 3-state buffer acting as programmable gate between controller logic and isolated output stage, controlled by system watchdog or safety logic.

Use Value: Dual OE inputs permit hardware-fault-triggered bus disable (e.g., if either OE tied to watchdog reset), enhancing functional safety.

Use Scenario: Feeding clock or control signals from a CPLD to multiple downstream logic blocks in a test fixture or protocol analyzer.

IC Role / Device Role / Timing Role: Low-skew, high-drive buffer distributing synchronous enable or strobe signals with minimal added jitter.

Use Value: 35 pF typical Cpd and 10 ns tpd ensure predictable clock tree behavior - essential for deterministic timing analysis in logic validation.

Equivalent & Alternatives

The following parts are listed as comparable options for similar hex noninverting buffer applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74HCT365DR	CMOS input thresholds shifted to TTL-compatible levels (VIH = 2 V min); identical pinout and function.	Better suited for legacy 5 V TTL systems where input noise margin must match TTL logic families.	Select when interfacing directly with 74LS or 74ALS outputs without level translation.
SN74LVC365ADBR	Lower VCC range (1.65–5.5 V), higher speed (tPD = 5.5 ns typ), 3.6 V tolerant inputs, different pinout (TSSOP-16).	Enables 1.8 V/3.3 V mixed-signal designs but requires PCB layout change due to TSSOP footprint and pin reassignment.	Choose for new low-voltage designs requiring faster timing and broader voltage flexibility - not drop-in compatible.

Compared with SN74HC365DR, SN74HCT365DR offers TTL-compatible inputs for legacy integration, while SN74LVC365ADBR delivers higher speed and lower voltage support at the cost of pinout and package incompatibility - making SN74HC365DR optimal for cost-sensitive, industrial 5 V bus buffering where proven reliability and SOIC-16 fit are priorities.

Availability

SN74HC365DR is available at Aetrix Electronics and suitable for industrial control panels, test instrumentation, and legacy system upgrades requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for SN74HC365DR 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 founded in 1930, specializing in analog, embedded processing, and logic solutions for industrial, automotive, and communications markets.

The SN74HC365DR belongs to TI's 74HC logic family - engineered for high noise immunity, low power, and robust 3-state bus interface performance in industrial and commercial applications.

FAQ

What is the maximum operating voltage for SN74HC365DR?

The absolute maximum supply voltage for SN74HC365DR is 7 V, but the recommended operating range is 2 V to 6 V per the datasheet. Operation above 6 V risks permanent damage, while below 2 V may cause unreliable logic thresholds or increased propagation delay. For stable 5 V system design, SN74HC365DR delivers ±6 mA output drive and 10 ns typical tpd - confirming full functionality within spec.

Does SN74HC365DR support 3.3 V logic levels?

Yes, SN74HC365DR fully supports 3.3 V operation: its VIH threshold is 2.0 V min at VCC = 3.3 V (per interpolated specs), and VOL remains ≤0.33 V at 6 mA sink - ensuring clean low-level recognition by 3.3 V receivers. The device draws only 80 µA max ICC at 3.3 V, making it suitable for mixed-voltage boards where SN74HC365DR acts as a bridge between 3.3 V controllers and 5 V peripherals.

How does the dual output-enable (OE1/OE2) logic work on SN74HC365DR?

SN74HC365DR requires both OE1 and OE2 to be low for any output to be active; if either is high, all six Y outputs enter high-impedance state. This AND-gated enable allows hierarchical control - e.g., OE1 from system controller and OE2 from safety monitor - so failure in either path disables the bus. The logic is confirmed in the FUNCTION TABLE and matches pin 1 (OE1) and pin 15 (OE2) assignments in the SOIC-16 top view diagram.

Can SN74HC365DR drive 15 LSTTL loads as stated in the datasheet?

Yes - SN74HC365DR's ±6 mA output drive at 5 V meets the LSTTL standard (IIL = −0.4 mA, IIH = 0.02 mA), allowing one SN74HC365DR output to source/sink current for up to 15 LSTTL inputs. This is validated by the "High-Current 3-State Outputs Drive Bus Lines, Buffer-Memory Address Registers, or Drive Up To 15 LSTTL Loads" statement in the datasheet front page and supported by VOL ≤ 0.26 V at 6 mA sink (VCC = 4.5 V).

Is SN74HC365DR pin-compatible with other packages in the same family?

Yes - SN74HC365DR (SOIC-16) shares identical pinout with SN74HC365N (PDIP-16), SN74HC365NSR (SO-16), and SN74HC365PW (TSSOP-16), as confirmed by the "SN74HC365 . . . D, N, NS, OR PW PACKAGE (TOP VIEW)" diagram. All map OE1 to pin 1, A1 to pin 2, Y1 to pin 3, GND to pin 16, and VCC to pin 11 - enabling direct PCB footprint substitution between SOIC, PDIP, and TSSOP variants of SN74HC365DR's family.

SN74HC365DR Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: 74HC

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:: 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

SN74HC365DR FAQ

1.How can I place an order for SN74HC365DR through Aetrix?

Please submit a Request for Quotation (RFQ) for SN74HC365DR 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 SN74HC365DR reliable?

The price and inventory of SN74HC365DR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74HC365DR is usually 5 days.

3.What payment methods are accepted for SN74HC365DR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74HC365DR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SN74HC365DR?

SN74HC365DR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SN74HC365DR 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 SN74HC365DR?

For technical support, including SN74HC365DR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74HC365DR requirements.

6.How does Aetrix verify that SN74HC365DR is sourced from the original manufacturer or authorized distributors?

All SN74HC365DR 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 SN74HC365DR meets industry standards.

7.What is the process for return or replacement of SN74HC365DR?

All SN74HC365DR units undergo pre-shipment inspection (PSI). If there is an issue with SN74HC365DR, 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 SN74HC365DR part is unused and in its original packaging.

Return procedure for SN74HC365DR:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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