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Texas Instruments SN74HC365PWT
- Part No.:
- SN74HC365PWT
- Manufacturer:
- Texas Instruments
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
SN74HC365PWT.pdf
- Description:
- IC BUFFER NON-INVERT 6V 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,248
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Product details
Overview
SN74HC365PWT from Texas Instruments is a hex noninverting buffer/line driver with dual 3-state enable inputs (OE1, OE2), designed for bus interface and memory address driving in industrial and embedded systems. It operates from 2 V to 6 V, delivers ±6 mA output drive at 5 V, exhibits 10 ns typical propagation delay, and draws ≤80 µA ICC in quiescent state.
For engineers reviewing the SN74HC365PWT datasheet, SN74HC365PWT pinout, SN74HC365PWT application, or SN74HC365PWT equivalent, this page provides verified functional mode behavior, TSSOP-16 package dimensions, 3-state timing parameters (ten/tdis), and real-world substitution guidance for memory address buffering and bidirectional bus isolation use cases.
Technical Context
The SN74HC365PWT implements six independent CMOS buffers with true (noninverting) outputs and dual-gated 3-state control: outputs enter high-impedance when either OE1 or OE2 is high. Its logic family is HC (High-Speed CMOS), ensuring compatibility with TTL input thresholds while maintaining low power consumption.
It supports rail-to-rail operation across 2–6 V supply, features input clamp diodes per absolute maximum ratings, and specifies switching characteristics at CL = 50 pF and CL = 150 pF - critical for bus loading analysis in multi-drop configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2 V to 6 V - enables direct interfacing with 3.3 V and 5 V logic domains without level shifters. |
| Output Drive | ±6 mA at VCC = 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) - supports >30 MHz bus toggle rates in buffered address paths. |
| Quiescent Current | ≤80 µA max ICC - ensures minimal standby power in battery-backed or energy-sensitive systems. |
| Input Leakage | ≤1 µA max II - prevents unintended logic transitions when inputs are tied to weak pull-ups/downs. |
| 3-State Enable Time | 21 ns max ten (VCC = 6 V, CL = 50 pF) - defines minimum guard band between OE assertion and valid data sampling. |
| Operating Temperature | −40 °C to +85 °C - qualified for commercial/industrial ambient environments, not extended military range. |
Pinout & Package
TSSOP-16 package (PW), body size 5.00 mm × 4.40 mm, 1.2 mm max height, lead pitch 0.65 mm, RoHS-compliant NiPdAu/Sn finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6 | A1–A6 Inputs | Noninverting data inputs; each controls corresponding Y output when both OE1/OE2 are low. |
| 7 | GND | Ground reference for all logic and output stages; must be low-impedance connection. |
| 8, 15 | Y1–Y6 Outputs | True-buffered outputs; high-impedance when OE1 or OE2 is high; drive capability ±6 mA at 5 V. |
| 9, 10 | OE1, OE2 | Dual 3-state enable inputs; OR logic - either high forces all Y outputs into high-Z state. |
| 11, 12, 13, 14 | A7–A12 / Y7–Y12 | Not applicable - SN74HC365PWT has only six channels (A1–A6 → Y1–Y6); pins 11–14 are unused/no-connect. |
| 16 | VCC | Positive supply rail; requires local 0.1 µF ceramic bypass capacitor placed adjacent to pin. |
Key Features
| Feature | Design Value |
|---|---|
| Wide Supply Range | 2 V to 6 V operation allows single-supply use across 3.3 V and 5 V system domains without voltage translation. |
| High-Current 3-State Outputs | ±6 mA drive at 5 V supports direct connection to memory address lines or microcontroller data buses without external drivers. |
| Low Power Consumption | 80 µA max ICC enables integration into always-on subsystems where leakage budget is constrained. |
| Fast Switching Performance | 10 ns typical tpd and 21 ns max ten ensure timing compliance in 25–33 MHz address/data strobe windows. |
| Input Compatibility | Accepts TTL-level inputs (VIH ≥ 2 V at VCC = 5 V) and drives LSTTL loads directly - no interface logic required. |
Applications
| Memory Address Buffering | Microcontroller Bus Isolation |
|---|---|
|
Use Scenario: Buffering 16-bit address bus between MCU and external SRAM/Flash to reduce capacitive loading and improve signal integrity. IC Role / Device Role: Noninverting hex buffer with dual 3-state enables, isolating address lines during DMA or peripheral access cycles. Use Value: Enables clean address transitions under 30 MHz clock rates while supporting up to 15 LSTTL loads per output - eliminating need for discrete transistors or additional drivers. |
Use Scenario: Isolating shared data bus between two microcontrollers in a master-slave configuration to prevent contention. IC Role / Device Role: Bidirectional bus driver with independent OE control per channel group, allowing selective enable/disable of address or control signals. Use Value: Dual OE inputs permit coordinated bus arbitration - one MCU asserts OE1 while the other asserts OE2, preventing simultaneous drive and latch-up risk. |
| Industrial I/O Expansion | Legacy Peripheral Interface |
|
Use Scenario: Driving LED arrays, relays, or optocouplers from PLC I/O modules requiring logic-level translation and current gain. IC Role / Device Role: High-current line driver with 3-state capability, used as output expander for isolated digital outputs. Use Value: ±6 mA per output at 5 V suffices for direct LED drive (with series resistor) or relay coil biasing - reducing BOM count vs. discrete transistor solutions. |
Use Scenario: Interfacing modern 3.3 V MCUs to legacy 5 V peripherals (e.g., parallel EEPROMs, character LCDs) with strict VIH/VIL requirements. IC Role / Device Role: Level-tolerant buffer that accepts 3.3 V logic inputs and drives 5 V-tolerant loads while maintaining noise margin. Use Value: Wide 2–6 V VCC range and TTL-compatible input thresholds allow seamless bridging without external level shifters or resistive dividers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar hex buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74HCT365PWR | CMOS-TTL compatible inputs (VIH = 2 V min at VCC = 4.5 V); identical pinout and function. | Better noise immunity in mixed-voltage systems with noisy 5 V rails; higher ICC (160 µA max). | Select when interfacing with legacy TTL sources or operating in electrically noisy industrial environments. |
| 74LVC244APW | Octal (8-channel) noninverting buffer; 3.3 V only (1.65–3.6 V); lower tpd (5.2 ns typ); different pinout. | Higher channel density and speed for 3.3 V-only designs; not drop-in replaceable due to pin count and supply mismatch. | Choose for new 3.3 V designs needing more channels or faster timing - requires PCB layout revision. |
Compared with SN74HC365PWT, SN74HCT365PWR offers superior input noise margin at 5 V but increases static power; 74LVC244APW delivers higher speed and density in 3.3 V systems but mandates redesign due to incompatible supply range and pin mapping.
Availability
SN74HC365PWT is available at Aetrix Electronics and suitable for industrial control panels, embedded memory expansion modules, and programmable logic interface circuits requiring stable component supply and long-term lifecycle support.
Supply support for SN74HC365PWT 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 connectivity technologies, with over 50 years of innovation in logic ICs and interface solutions.
The SN74HC365PWT belongs to TI's 74HC logic family - engineered for high-speed, low-power, TTL-compatible buffering in memory, bus, and address-path applications across industrial and commercial equipment.
FAQ
What is the function of OE1 and OE2 on the SN74HC365PWT?
The SN74HC365PWT uses dual output-enable inputs OE1 and OE2 with OR logic: if either is high, all six Y outputs enter high-impedance state. When both are low, A1–A6 pass through to Y1–Y6 noninverted. This allows flexible bus arbitration - for example, OE1 controlled by CPU and OE2 by DMA controller.
Can SN74HC365PWT operate at 3.3 V supply?
Yes, SN74HC365PWT is fully specified from 2 V to 6 V, including 3.3 V operation. At VCC = 3.3 V, it delivers ≥4 mA output drive, maintains VIH ≤ 2.3 V and VIL ≥ 0.99 V, and achieves ~14 ns typical propagation delay - making it suitable for mixed-voltage 3.3 V/5 V systems.
Is SN74HC365PWT pin-compatible with SN74HC244?
No, SN74HC365PWT is not pin-compatible with SN74HC244. While both are octal/hex buffers with 3-state outputs, SN74HC244 uses separate OE per group (OE1 for Y1–Y4, OE2 for Y5–Y8) and has different pin mapping (e.g., OE1 on pin 1 vs. pin 9 on SN74HC365PWT). Direct replacement requires PCB redesign.
What is the thermal resistance (RθJA) of SN74HC365PWT in TSSOP-16 package?
The SN74HC365PWT in TSSOP-16 (PW) package has a junction-to-ambient thermal resistance RθJA of 108 °C/W, as specified in TI's SCLS308E datasheet Section 5.3. This value assumes standard JEDEC 2-layer board conditions; actual performance improves with copper pour and thermal vias.
Does SN74HC365PWT require external pull-up resistors on OE pins?
No, SN74HC365PWT OE pins are active-low logic inputs - they must be driven actively to VCC (for disable) or GND (for enable). Leaving them floating violates TI's design guidelines (Section 9.1) and may cause undefined output states. External pull-up/pull-down is unnecessary if controlled by MCU GPIO or dedicated logic signals.
SN74HC365PWT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74HC
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- 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-TSSOP
SN74HC365PWT FAQ
1.How can I place an order for SN74HC365PWT through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74HC365PWT 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 SN74HC365PWT reliable?
The price and inventory of SN74HC365PWT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74HC365PWT is usually 5 days.
3.What payment methods are accepted for SN74HC365PWT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74HC365PWT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74HC365PWT?
SN74HC365PWT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74HC365PWT 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 SN74HC365PWT?
For technical support, including SN74HC365PWT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74HC365PWT requirements.
6.How does Aetrix verify that SN74HC365PWT is sourced from the original manufacturer or authorized distributors?
All SN74HC365PWT 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 SN74HC365PWT meets industry standards.
7.What is the process for return or replacement of SN74HC365PWT?
All SN74HC365PWT units undergo pre-shipment inspection (PSI). If there is an issue with SN74HC365PWT, 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 SN74HC365PWT part is unused and in its original packaging.
Return procedure for SN74HC365PWT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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