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STMicroelectronics M74HC365TTR
- Part No.:
- M74HC365TTR
- Manufacturer:
- STMicroelectronics
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
M74HC365TTR.pdf
- Description:
- IC BUFFER NON-INVERT 6V 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,658
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Product details
Overview
M74HC365TTR from STMicroelectronics is a hex non-inverting 3-state bus buffer IC used for bidirectional data bus isolation and load driving in digital logic systems. It operates from 2 V to 6 V, delivers 6 mA output drive (min), exhibits 10 ns typical propagation delay at 6 V, and supports industrial temperature range (–55 °C to +125 °C) in TSSOP16 package.
For engineers reviewing the M74HC365TTR datasheet, M74HC365TTR pinout, M74HC365TTR application, or M74HC365TTR equivalent, key selection criteria include dual enable control logic, high noise immunity (28 % VCC), symmetrical output impedance, low quiescent current (4 μA max), and compatibility with legacy 74-series bus buffers.
Technical Context
The M74HC365TTR implements six independent non-inverting buffers, each with output enable controlled by the logical AND of two active-low inputs (G1 and G2). All outputs enter high-impedance state unless both enables are low - enabling precise bus arbitration in multi-master systems.
Designed in silicon gate C2MOS technology, it achieves balanced tPLH/tPHL delays and robust ESD protection (2 kV HBM). Its input thresholds scale with VCC (VIH = 3.15 V min at 4.5 V), and output voltage swing reaches rail-to-rail under light loads (VOH = 4.4 V min at 4.5 V, IO = –20 μA).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2 V to 6 V - supports mixed-voltage system interfacing (e.g., 3.3 V logic driving 5 V peripherals) |
| tPD (typ) | 10 ns at VCC = 6 V - enables reliable operation up to ~50 MHz clock domains in buffered paths |
| IOL / IOH (min) | 6 mA - sufficient to drive standard TTL loads or multiple CMOS inputs without fanout limitation |
| VNIH / VNIL | 28 % VCC (min) - provides strong noise margin against ground bounce and crosstalk in dense PCB layouts |
| ICC (max) | 4 μA at TA = 25 °C - ensures ultra-low static power in battery-backed or always-on subsystems |
| ESD Rating | HBM: 2 kV - meets basic handling robustness requirements for automated assembly and field service |
| Operating Temp | –55 °C to +125 °C - qualified for extended industrial and under-hood automotive environments |
Pinout & Package
TSSOP16 package: 4.9 mm × 6.4 mm body, 0.65 mm pitch, 1.2 mm height, lead-free and RoHS-compliant per ECOPACK® specifications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 15 | G1, G2 | Active-low dual enable inputs - both must be low to activate all six buffers; enables hierarchical bus gating |
| 2, 4, 6, 10, 12, 14 | 1A–6A | Input terminals for six independent data channels - compatible with standard 74-series signal naming convention |
| 3, 5, 7, 9, 11, 13 | 1Y–6Y | Non-inverting buffered outputs - high-impedance when G1/G2 not both low; supports wired-OR and bus sharing |
| 8 | GND | Digital ground reference - requires low-inductance connection to minimize switching noise coupling |
| 16 | VCC | Positive supply rail - decoupling capacitor (100 nF ceramic) recommended within 5 mm of pin |
Key Features
| Feature | Design Value |
|---|---|
| High-speed propagation | 10 ns typical tPD at 6 V - reduces timing skew across parallel data paths in memory or address buses |
| 3-state output control | Dual active-low enable (G1 ∧ G2) - prevents bus contention during power-up, reset, or partial system shutdown |
| Input noise immunity | 28 % VCC minimum noise margin - suppresses false triggering from EMI or simultaneous switching noise |
| Rail-to-rail output swing | VOH ≥ 4.4 V / VOL ≤ 0.26 V at 4.5 V, 6 mA - ensures full logic-level compatibility with downstream 74HC/74HCT devices |
| Low static power | ICC ≤ 4 μA at 25 °C - enables use in energy-constrained applications such as sensor nodes or standby controllers |
Applications
| Industrial PLC I/O Expansion | Legacy Microcontroller Bus Interface |
|---|---|
|
Use Scenario: Isolating microcontroller GPIO banks from high-capacitance industrial backplane wiring while maintaining signal integrity over 10+ cm traces. IC Role / Device Role / Timing Role: Non-inverting 3-state buffer providing level-shifted, slew-controlled drive to reduce reflections and ground bounce. Use Value: Enables direct connection of 3.3 V MCU ports to 5 V industrial sensors without external level shifters or series resistors. |
Use Scenario: Expanding address/data bus width on an 8-bit microcontroller (e.g., STM8) to interface with external SRAM or EPROM. IC Role / Device Role / Timing Role: Hex bus buffer acting as bi-directional data path controller synchronized with WR/RD strobes via G1/G2 enables. Use Value: Eliminates timing uncertainty from capacitive loading, supporting stable 10 MHz bus cycles with deterministic setup/hold margins. |
| Automotive Body Control Module | Test Equipment Signal Conditioning |
|
Use Scenario: Driving multiple LED indicators and relay drivers from a single microcontroller port in a vehicle door module. IC Role / Device Role / Timing Role: Output-enable-gated buffer isolating MCU pins during CAN bus error recovery resets. Use Value: Prevents unintended actuation during MCU brown-out or watchdog-triggered reset sequences due to controlled high-Z default state. |
Use Scenario: Buffering and conditioning DUT signals in automated test fixtures where signal integrity degrades over long probe cables. IC Role / Device Role / Timing Role: Low-skew, rail-compatible repeater restoring logic levels and edge fidelity before FPGA acquisition. Use Value: Extends usable cable length from 30 cm to >1 m without signal degradation, reducing fixture redesign cost. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar hex non-inverting 3-state buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74HC365N | DIP-16 package only; no automotive qualification; wider temp range (–40 °C to +85 °C) | Limited to lab prototypes or through-hole production; lacks extended temperature support for under-hood use | Select for breadboarding or legacy through-hole assembly where TSSOP reflow is unavailable |
| 74LVC365APW | 3.3 V only (1.65–3.6 V); higher drive (24 mA); lower tPD (5.3 ns typ); smaller TSSOP16 footprint | Not suitable for 5 V systems; requires level translation when interfacing with 5 V peripherals | Prefer for modern 3.3 V-only designs demanding higher speed and lower power than HC family |
Compared with SN74HC365N and 74LVC365APW, the M74HC365TTR uniquely combines wide VCC range (2–6 V), industrial temperature rating, and TSSOP16 packaging - making it optimal for mixed-voltage embedded systems requiring long-term reliability without redesign.
Availability
M74HC365TTR is available at Aetrix Electronics and suitable for industrial automation, automotive body electronics, and test equipment design requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for M74HC365TTR 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, specializing in microcontrollers, power management, analog ICs, and automotive-grade components.
The M74HC365 belongs to ST's high-reliability HC logic family, designed specifically for robust digital interfacing in harsh environments - emphasizing noise immunity, wide voltage operation, and extended temperature capability.
FAQ
Can M74HC365TTR operate reliably at 2.0 V supply?
Yes. The device is fully specified down to 2.0 V: VIH = 1.5 V (min), VOH = 1.9 V (min at IO = –20 μA), and tPD = 90 ns (max). It maintains functional 3-state control and noise margin (28 % VCC) across the entire 2–6 V range, making it suitable for battery-powered systems with brown-out conditions.
What happens if only one enable input (G1 or G2) is low?
All six outputs go to high-impedance state regardless of data input values. The truth table confirms that outputs are active only when both G1 and G2 are low (logic L/L); any other combination (L/H, H/L, H/H) forces Y1–Y6 into high-Z mode - ensuring fail-safe bus isolation.
Is M74HC365TTR pin-compatible with 74HC365 in SO16 package?
Yes - identical pinout and function across SO16 and TSSOP16 packages. Pin numbering, signal names (G1/G2, A1–A6, Y1–Y6), and electrical behavior match exactly. Only mechanical dimensions and thermal characteristics differ, requiring layout adjustment but no schematic change.
Does M74HC365TTR support hot-swap or live-insertion?
No. While it features ESD protection (2 kV HBM), the device lacks powered-off protection diodes or current-limiting circuitry required for true hot-swap operation. Applying signals to inputs or outputs while VCC is unpowered may forward-bias internal clamps and cause excessive current flow - power sequencing must be controlled externally.
M74HC365TTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- 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:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TSSOP
M74HC365TTR FAQ
1.How can I place an order for M74HC365TTR through Aetrix?
Please submit a Request for Quotation (RFQ) for M74HC365TTR 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 M74HC365TTR reliable?
The price and inventory of M74HC365TTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M74HC365TTR is usually 5 days.
3.What payment methods are accepted for M74HC365TTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M74HC365TTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for M74HC365TTR?
M74HC365TTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M74HC365TTR 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 M74HC365TTR?
For technical support, including M74HC365TTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M74HC365TTR requirements.
6.How does Aetrix verify that M74HC365TTR is sourced from the original manufacturer or authorized distributors?
All M74HC365TTR 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 M74HC365TTR meets industry standards.
7.What is the process for return or replacement of M74HC365TTR?
All M74HC365TTR units undergo pre-shipment inspection (PSI). If there is an issue with M74HC365TTR, 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 M74HC365TTR part is unused and in its original packaging.
Return procedure for M74HC365TTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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