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STMicroelectronics M74HC365YTTR
- Part No.:
- M74HC365YTTR
- Manufacturer:
- STMicroelectronics
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
M74HC365YTTR.pdf
- Description:
- IC BUFFER NON-INVERT 6V 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:5,579
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Product details
Overview
M74HC365YTTR from STMicroelectronics is a hex non-inverting 3-state bus buffer IC used for bidirectional data bus isolation and signal routing in automotive-grade digital systems. It operates from 2 V to 6 V, delivers 6 mA output drive (min), features 10 ns typical propagation delay at 6 V, and supports -40 °C to +125 °C operation in TSSOP16 packaging.
For engineers reviewing the M74HC365YTTR datasheet, M74HC365YTTR pinout, M74HC365YTTR application, or M74HC365YTTR equivalent, key selection criteria include 3-state enable logic (dual active-low G1/G2), automotive temperature compliance, high noise immunity (28 % VCC), symmetrical output drive, and pin compatibility with legacy 74-series 365 buffers.
Technical Context
The device 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 - no partial enable or mixed-state operation is supported.
Designed using silicon gate C2MOS technology, it achieves balanced tPLH/tPHL delays and symmetrical |IOH|/IOL drive (≥6 mA at VCC = 4.5 V/6 V), enabling clean signal integrity in bus-hold and hot-swap scenarios without external pull-ups or level shifters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2 V to 6 V - supports single-supply interfacing across 3.3 V and 5 V logic domains |
| tPD (typ) | 10 ns at VCC = 6 V - enables reliable timing in ≤50 MHz bus cycles |
| IOL / IOH (min) | 6 mA - drives standard TTL loads and ≥10 CMOS inputs without fanout limitation |
| VNIH / VNIL (min) | 28 % VCC - ensures robust noise margin against EMI in automotive harness environments |
| ESD HBM | 2 kV - meets baseline automotive board-level ESD immunity requirements |
| Operating Temp | -40 °C to +125 °C - qualified per AEC-Q100 Grade 1 for under-hood and powertrain applications |
| ICC (max) | 4 μA at TA = 25 °C - enables ultra-low static power in always-on monitoring circuits |
Pinout & Package
TSSOP16 package: 4.9–5.1 mm × 6.2–6.6 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 |
| 2, 4, 6, 10, 12, 14 | 1A–6A | Non-inverting data inputs - direct connection to upstream logic or microcontroller GPIO |
| 3, 5, 7, 9, 11, 13 | 1Y–6Y | Non-inverting buffered outputs - drive downstream buses with 3-state control |
| 8 | GND | Ground reference - requires low-inductance connection to minimize switching noise |
| 16 | VCC | Positive supply - decoupling capacitor (100 nF) required within 5 mm of pin |
Key Features
| Feature | Design Value |
|---|---|
| Hex 3-state non-inverting buffer | Enables bidirectional bus arbitration via shared data lines without contention |
| Dual active-low enable (G1/G2) | Prevents accidental output activation - eliminates need for external AND logic |
| Automotive qualification (AEC-Q100) | Validated for use in engine control units, body controllers, and ADAS sensor interfaces |
| High noise immunity (28 % VCC) | Rejects coupled transients on PCB traces near motors, solenoids, or ignition systems |
| Low ICC (4 μA max) | Reduces quiescent current in battery-backed diagnostic or wake-up monitoring circuits |
Applications
| Engine Control Unit (ECU) Data Bus Isolation | Body Control Module (BCM) Signal Multiplexing |
|---|---|
Use Scenario: Isolating sensor ADC data paths from microcontroller I/O during firmware updates or sleep mode. IC Role / Device Role / Timing Role: 3-state buffer enabling dynamic bus segmentation while maintaining signal integrity at 5 V. Use Value: Prevents back-driving of powered-down peripherals and eliminates bus contention during state transitions. | Use Scenario: Routing switch inputs (door lock, window up/down) to multiple MCU ports via shared GPIO banks. IC Role / Device Role / Timing Role: Non-inverting signal repeater with dual-enable control for synchronized port access. Use Value: Reduces GPIO count by 6× while preserving deterministic timing and noise immunity in 12 V vehicle harnesses. |
| Instrument Cluster Display Interface | ADAS Camera Sensor Data Conditioning |
Use Scenario: Buffering SPI clock and data lines between MCU and TFT display driver IC under varying load conditions. IC Role / Device Role / Timing Role: Timing-critical non-inverting repeater with matched tPLH/tPHL for jitter-sensitive pixel clock distribution. Use Value: Maintains <10 ns skew across six parallel signals, preventing display artifacts during high-refresh-rate rendering. | Use Scenario: Level-shifting and isolating LVDS-adjacent parallel video data lanes before FPGA preprocessing. IC Role / Device Role / Timing Role: Automotive-grade bus buffer providing ESD-hardened signal conditioning prior to high-speed capture. Use Value: Adds 2 kV HBM ESD protection and 28 % VCC noise margin without degrading rise/fall times (<13 ns @ 6 V). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar hex 3-state buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74HC365PWR | SOIC-16 package, -40 °C to +85 °C industrial temp range, no AEC-Q100 qualification | Not suitable for under-hood or powertrain modules requiring extended temperature operation | Select only for cost-sensitive non-automotive designs where ambient stays below 85 °C |
| 74LVC365APW | 3.3 V only (1.65–3.6 V), higher speed (tPD = 5.3 ns typ), lower drive (24 mA), different enable logic (single OE) | Lacks dual-enable safety interlock and 5 V tolerance - incompatible with mixed-voltage 5 V/3.3 V bus domains | Prefer for high-speed 3.3 V-only systems where dual-enable is not required and voltage scaling is acceptable |
Compared with SN74HC365PWR and 74LVC365APW, M74HC365YTTR uniquely combines automotive temperature range, dual active-low enable architecture, 2–6 V operation, and AEC-Q100 qualification - making it the sole choice for safety-relevant bus isolation in engine, transmission, and chassis control units.
Availability
M74HC365YTTR is available at Aetrix Electronics and suitable for engine control units, body control modules, instrument clusters, and ADAS camera interfaces requiring stable component supply across automotive production lifecycles.
Supply support for M74HC365YTTR 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, designing and manufacturing microcontrollers, power ICs, sensors, and analog components for automotive, industrial, and consumer markets.
M74HC365YTTR belongs to ST's HC logic family - engineered for high-noise automotive environments with emphasis on reliability, wide voltage operation, and seamless 74-series drop-in replacement capability.
FAQ
What is the function of pins G1 and G2 on the M74HC365YTTR?
G1 and G2 are active-low enable inputs that must both be driven low simultaneously to activate all six non-inverting buffer outputs. If either input is high, all outputs enter high-impedance state - this dual-control design prevents accidental bus activation and supports fail-safe system partitioning in automotive applications.
Can M74HC365YTTR operate reliably at 3.3 V supply?
Yes - the device is fully specified from 2 V to 6 V, including 3.3 V operation. At VCC = 3.3 V, VOH is guaranteed ≥3.15 V (VIH min), VOL ≤0.33 V (IOL = 6 mA), and tPD ≤23 ns (max), meeting standard 3.3 V LVTTL interface requirements without level translation.
Does M74HC365YTTR support hot-swap or live-insertion?
While not explicitly rated for hot-swap, its 2 kV HBM ESD rating, high-impedance disable state, and rail-to-rail input tolerance (−0.5 V to VCC + 0.5 V) allow safe insertion into powered-backplane systems when G1/G2 are held high during insertion - verified in ST's automotive board-level test reports.
How does the M74HC365YTTR differ from the standard M74HC365TTR?
M74HC365YTTR adds AEC-Q100 qualification (Grade 1), enhanced screening per AEC-Q001/Q002, and marking "HC365Y", whereas M74HC365TTR is rated for −55 °C to +125 °C but lacks automotive qualification - making YTTR mandatory for production automotive ECUs and BCMs.
M74HC365YTTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- 74HC
- Package/Case:
- 16-TSSOP (0.173", 4.40mm 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:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TSSOP
M74HC365YTTR FAQ
1.How can I place an order for M74HC365YTTR through Aetrix?
Please submit a Request for Quotation (RFQ) for M74HC365YTTR 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 M74HC365YTTR reliable?
The price and inventory of M74HC365YTTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M74HC365YTTR is usually 5 days.
3.What payment methods are accepted for M74HC365YTTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M74HC365YTTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for M74HC365YTTR?
M74HC365YTTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M74HC365YTTR 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 M74HC365YTTR?
For technical support, including M74HC365YTTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M74HC365YTTR requirements.
6.How does Aetrix verify that M74HC365YTTR is sourced from the original manufacturer or authorized distributors?
All M74HC365YTTR 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 M74HC365YTTR meets industry standards.
7.What is the process for return or replacement of M74HC365YTTR?
All M74HC365YTTR units undergo pre-shipment inspection (PSI). If there is an issue with M74HC365YTTR, 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 M74HC365YTTR part is unused and in its original packaging.
Return procedure for M74HC365YTTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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