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STMicroelectronics M74HC86M1R
- Part No.:
- M74HC86M1R
- Manufacturer:
- STMicroelectronics
- Category:
- Gates and Inverters
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
M74HC86M1R.pdf
- Description:
- IC GATE XOR 4CH 2-INP 14SO
- Quantity:
- Payment:
- Shipping:
Inventory:3,665
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Product details
Overview
M74HC86M1R from STMicroelectronics is a high-speed CMOS quad 2-input XOR gate in SO-14 package, delivering tPD = 12 ns (typ.) at VCC = 6 V, symmetrical IOH/IOL ≥ 4 mA, and operating across 2 V to 6 V. It serves as a logic-level combinatorial gate in digital control, parity generation, and signal comparison circuits within industrial PLC I/O modules.
For engineers reviewing the M74HC86M1R datasheet, M74HC86M1R pinout, M74HC86M1R application, or M74HC86M1R equivalent, key selection criteria include propagation delay matching, rail-to-rail input voltage tolerance (VI = 0 to VCC), output drive capability under 4 mA load, and compatibility with legacy 74-series logic families in mixed-voltage systems.
Technical Context
The M74HC86 implements four independent XOR gates using silicon gate C2MOS technology, enabling balanced tPLH ≅ tPHL propagation delays and high noise immunity (VNIH/VNIL ≥ 28% VCC). Each gate features buffered inputs and outputs, integrated ESD protection diodes, and rail-referenced switching thresholds.
It operates over an extended temperature range (–55 °C to +125 °C) with quiescent ICC ≤ 1 µA at 25 °C and supports input rise/fall times up to 1000 ns at VCC = 2 V - making it suitable for low-power, noise-prone environments where deterministic timing and static robustness are required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2 V to 6 V - enables direct interface with 3.3 V and 5 V logic domains without level shifters |
| tPD (Typ.) | 12 ns at VCC = 6 V - ensures sub-15 ns gate delay for synchronous control timing in 40+ MHz clock domains |
| IOH / IOL | ≥ 4 mA - drives standard TTL loads and multiple 74HC inputs without fanout limitation |
| VIL / VIH | 0.5 V / 1.5 V (at VCC = 2 V); 1.8 V / 4.2 V (at VCC = 6 V) - guarantees reliable logic recognition across full supply range |
| ICC (Max) | 20 µA at –55 °C to +125 °C - supports always-on monitoring functions in battery-backed systems |
| CIN | 10 pF - limits capacitive loading on driving stages, preserving signal edge integrity |
| Operating Temp | –55 °C to +125 °C - qualified for under-hood automotive and industrial motor control applications |
Pinout & Package
Package: SO-14 (Small Outline, 14-pin, surface-mount, 3.9 mm body width per PO13G mechanical drawing).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4, 9, 12 | 1A–4A | Independent data inputs for each XOR gate; CMOS-compatible, protected against ±20 mA transient current |
| 2, 5, 10, 13 | 1B–4B | Second data inputs per gate; enable differential logic evaluation (e.g., A ⊕ B) with matched threshold tracking |
| 3, 6, 8, 11 | 1Y–4Y | CMOS push-pull outputs; deliver symmetrical sourcing/sinking capability and support wired-OR via external pull-up if needed |
| 7 | GND | Dedicated ground reference for all internal logic and ESD structures; requires low-impedance PCB connection |
| 14 | VCC | Single positive supply rail; decoupling capacitor (100 nF) recommended within 5 mm of pin for AC noise suppression |
Key Features
| Feature | Design Value |
|---|---|
| Quad XOR functionality | Four fully isolated 2-input XOR gates in one SO-14 package - reduces board space vs discrete gate arrays |
| High noise immunity | VNIH/VNIL ≥ 28% VCC minimum - rejects common-mode transients on industrial I/O lines without external filtering |
| Symmetrical output drive | |IOH| = IOL ≥ 4 mA - eliminates duty-cycle distortion in clocked XOR-based modulators or choppers |
| Wide voltage operation | VCC = 2 V to 6 V - interoperable with both 3.3 V microcontrollers and legacy 5 V peripherals |
| ESD-protected inputs | Integrated diode clamps per input - withstands ±2 kV HBM without external TVS components |
Applications
| Parity Generator for Serial Data Links | Phase Comparator in Clock Recovery Circuits |
|---|---|
Use Scenario: Generating odd/even parity bits for RS-485 or CAN FD frame transmission in industrial gateways. IC Role / Device Role / Timing Role: Combinatorial XOR tree computing cumulative bitwise XOR across 4-bit nibbles before UART framing. Use Value: Enables real-time parity insertion with <15 ns added latency and zero additional power overhead beyond baseline ICC. | Use Scenario: Detecting phase misalignment between recovered clock and reference clock in optical line terminals. IC Role / Device Role / Timing Role: XOR-based phase detector feeding loop filter in analog PLL architectures. Use Value: Delivers linear phase-to-voltage conversion slope with matched tPLH/tPHL ensuring minimal detection dead zone. |
| Motor Direction Logic in H-Bridge Controllers | Secure Key XOR Masking in Embedded Crypto Modules |
Use Scenario: Translating dual-quadrature encoder signals into forward/reverse direction flags for BLDC motor commutation. IC Role / Device Role / Timing Role: Real-time XOR decoding of A/B quadrature edges to determine rotation direction prior to PWM generation. Use Value: Guarantees glitch-free direction output with <20 ns worst-case metastability window under 10 MHz encoder rates. | Use Scenario: Performing bitwise XOR between AES round keys and plaintext blocks in side-channel resistant firmware implementations. IC Role / Device Role / Timing Role: Hardware-accelerated XOR engine offloading CPU during key whitening or mask generation phases. Use Value: Provides deterministic, constant-time XOR execution independent of operand values - mitigating timing-based side-channel leakage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad XOR gate applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74HC86DR | TI part with identical pinout and DC specs; tPD = 13 ns (typ.) at VCC = 6 V; ICC = 2 µA (max) at 25 °C | Same functional role but slightly higher quiescent current; validated for TI-specific reference designs only | Select when sourcing from TI-aligned supply chains or requiring TI's enhanced thermal derating profile |
| 74VHC86M | ON Semiconductor part; VCC = 2–5.5 V; tPD = 7.5 ns (typ.) at VCC = 5 V; IOH/IOL = 8 mA (min) | Higher speed and drive strength, but narrower VCC range excludes 6 V operation | Prefer for 5 V-only systems needing faster toggle rates or heavier capacitive loads |
Compared with SN74HC86DR and 74VHC86M, the M74HC86M1R offers the widest supply range (2–6 V), lowest ICC (1 µA max), and best noise margin (28% VCC), making it optimal for mixed-voltage, ultra-low-power, and electrically noisy industrial control nodes.
Availability
M74HC86M1R is available at Aetrix Electronics and suitable for industrial motor controllers, automotive body electronics, and secure embedded crypto subsystems requiring stable component supply across extended temperature and voltage ranges.
Supply support for M74HC86M1R 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, designing and manufacturing microcontrollers, analog ICs, power devices, and logic families for industrial, automotive, and consumer applications.
The M74HC86 belongs to ST's high-speed HC logic product line, engineered for drop-in replacement of legacy 74LS/74F devices while delivering CMOS power efficiency and enhanced noise resilience in harsh electrical environments.
FAQ
Is M74HC86M1R pin-compatible with standard 74HC86 devices?
Yes - M74HC86M1R uses the industry-standard SO-14 footprint and matches the exact pin assignment of 74HC86 across all 14 terminals, including VCC (pin 14), GND (pin 7), and identical XOR gate input/output mapping. No PCB redesign is needed for migration from through-hole DIP or other SO-14 variants.
What is the maximum capacitive load this device can drive reliably?
The M74HC86M1R is characterized for CL = 50 pF in AC testing, and its output drive (≥4 mA) supports stable operation into ≤75 pF total load capacitance at VCC = 6 V with tPLH/tPHL remaining within 28 ns max. For loads exceeding 50 pF, series termination or reduced slew rate may be required to avoid ringing.
Does this device support partial power-down or I/O isolation when VCC = 0 V?
No - M74HC86M1R lacks Ioff or power-down logic. When VCC = 0 V, inputs and outputs enter high-impedance states only if no external voltage is applied; applying signals to inputs or outputs with VCC unpowered risks latch-up or damage due to forward-biased protection diodes.
Can M74HC86M1R operate at 1.8 V supply?
No - the absolute minimum recommended VCC is 2.0 V per ST's datasheet. At 1.8 V, VIH/VIL thresholds become undefined, propagation delay increases unpredictably (>200 ns), and output drive collapses below usable levels; use 74LVC86 or similar 1.65–5.5 V logic for 1.8 V systems.
M74HC86M1R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- 74HC
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Logic Type:
- XOR (Exclusive OR)
- Number of Circuits:
- 4
- Number of Inputs:
- 2
- Features:
- -
- Voltage - Supply:
- 2V ~ 6V
- Current - Quiescent (Max):
- 1 µA
- Current - Output High, Low:
- 5.2mA, 5.2mA
- Input Logic Level - Low:
- 0.5V ~ 1.8V
- Input Logic Level - High:
- 1.5V ~ 4.2V
- Max Propagation Delay @ V, Max CL:
- 19ns @ 6V, 50pF
- Operating Temperature:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SO
M74HC86M1R FAQ
1.How can I place an order for M74HC86M1R through Aetrix?
Please submit a Request for Quotation (RFQ) for M74HC86M1R 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 M74HC86M1R reliable?
The price and inventory of M74HC86M1R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M74HC86M1R is usually 5 days.
3.What payment methods are accepted for M74HC86M1R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M74HC86M1R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for M74HC86M1R?
M74HC86M1R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M74HC86M1R 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 M74HC86M1R?
For technical support, including M74HC86M1R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M74HC86M1R requirements.
6.How does Aetrix verify that M74HC86M1R is sourced from the original manufacturer or authorized distributors?
All M74HC86M1R 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 M74HC86M1R meets industry standards.
7.What is the process for return or replacement of M74HC86M1R?
All M74HC86M1R units undergo pre-shipment inspection (PSI). If there is an issue with M74HC86M1R, 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 M74HC86M1R part is unused and in its original packaging.
Return procedure for M74HC86M1R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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