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onsemi MC14049UBFELG
- Part No.:
- MC14049UBFELG
- Manufacturer:
- onsemi
- Category:
- Gates and Inverters
- Package:
- 16-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
MC14049UBFELG.pdf
- Description:
- IC INVERTER 6CH 1-INP 16SOEIAJ
- Quantity:
- Payment:
- Shipping:
Inventory:4,419
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Product details
Overview
MC14049UBFELG from onsemi is a hex CMOS inverter/buffer IC with P- and N-channel enhancement-mode MOSFETs in a monolithic structure, designed for low-power logic-level translation and high-noise-immunity applications. It operates from 3.0 V to 18 V, supports input voltages exceeding VDD, delivers ±45 mA output current per pin, and drives two TTL/DTL loads at 5 V. It is used in industrial control interfaces requiring voltage-level shifting between CMOS and legacy logic families.
For engineers reviewing the MC14049UBFELG datasheet, pinout, applications, or equivalent options, key selection criteria include its wide supply range (3–18 V), VIH > VDD capability, NC pins (13 & 16), SOEIAJ-16 package footprint, and compatibility with mixed-voltage system interfacing.
Technical Context
The MC14049UBFELG implements six independent CMOS inverting buffers using complementary P- and N-channel enhancement-mode transistors. Its architecture enables true logic-level conversion without dual supplies - inputs can swing up to 18 V while VDD is as low as 3 V, making it suitable for bridging disparate logic families.
Each buffer provides rail-to-rail output swing (VOL ≤ 0.05 V at 5 V, VOH ≥ 4.95 V), sink current up to 30 mA (at VDD = 15 V), and source current up to −10 mA (at VDD = 15 V). Unused inputs must be tied to VSS or VDD; pins 13 and 16 are unconnected internally and must remain floating or unused.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3.0 V to 18 V - enables operation across industrial, automotive, and legacy logic systems without level-shifter ICs. |
| Input Voltage Range | −0.5 V to +18.0 V - allows inputs to exceed VDD, supporting high-side signal injection and mixed-supply interface. | Output Drive (Sink) | 30 mA max at VDD = 15 V - sufficient to directly drive two TTL/DTL loads or small LEDs without external buffers. |
| Quiescent Current | ≤ 4.0 µA at VDD = 15 V - ensures ultra-low static power in battery-backed or energy-sensitive systems. |
| Propagation Delay | 30 ns typical at VDD = 10 V, CL = 50 pF - balances speed and noise immunity for medium-speed control logic. |
| ESD Protection | Improved ESD protection on all inputs - enhances robustness in handling and board-level assembly environments. |
| Operating Temp | −55 °C to +125 °C - qualified for extended industrial and under-hood automotive applications. |
Pinout & Package
MC14049UBFELG is housed in a 16-pin SOEIAJ (Small Outline Package, EIAJ standard) - case 966, Pb-free, tape-and-reel packaging (2000 units/reel). This surface-mount package measures 9.90–10.50 mm × 5.10–5.45 mm with 1.27 mm pitch, optimized for automated assembly and space-constrained PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VDD | Positive supply rail - accepts 3.0–18.0 V DC; decoupling capacitor required near pin for noise suppression. |
| 2 | INA | Inverter A input - accepts logic signals up to 18 V regardless of VDD value; must be tied to VSS or VDD if unused. |
| 3 | OUTA | Inverter A output - provides inverted, rail-to-rail CMOS output; capable of sourcing/sinking up to ±45 mA. |
| 4 | INB | Inverter B input - electrically identical to INA; shares same VIH/VIL thresholds and noise margin. |
| 5 | OUTB | Inverter B output - fully independent buffer stage; no internal coupling to other channels. |
| 6 | INC | Inverter C input - supports same overvoltage-tolerant input behavior as pins 2 and 4. |
| 7 | OUTC | Inverter C output - delivers logic inversion with propagation delay < 50 ns (max) at 15 V. |
| 8 | VSS | Ground reference - all input/output voltage levels referenced to this pin; must be low-impedance connection. |
| 9 | IND | Inverter D input - compatible with high-noise environments due to CMOS threshold hysteresis. |
| 10 | OUTD | Inverter D output - supports direct TTL/DTL load driving when VDD = 5.0 V (IOL ≥ 3.2 mA). |
| 11 | INE | Inverter E input - VIH minimum = 4.0 V at VDD = 5 V, ensuring reliable recognition of TTL-high signals. |
| 12 | OUTE | Inverter E output - VOL ≤ 0.05 V at VDD = 5 V, enabling clean low-state signaling into downstream CMOS gates. |
| 13 | NC | No internal connection - no electrical function; must be left unconnected or grounded only if mechanical stability requires. |
| 14 | INF | Inverter F input - identical VIH/VIL specs as other inputs; supports same overvoltage tolerance. |
| 15 | OUTF | Inverter F output - completes the hex-buffer set; usable as standalone level translator or buffer stage. |
| 16 | NC | No internal connection - no bonding wire or circuit tie; floating by design and electrically inert. |
Key Features
| Feature | Design Value |
|---|---|
| Single-supply level translation | Converts logic signals between different voltage domains (e.g., 12 V sensor → 5 V MCU) using only VDD and no auxiliary rails. |
| VIN > VDD tolerance | Accepts input voltages up to 18 V even when VDD = 3 V - eliminates need for external clamping diodes in mixed-voltage I/O. |
| High sink/source capability | Delivers 30 mA sink current at 15 V - drives multiple TTL loads or small actuators without discrete transistors. |
| Wide temperature operation | Rated from −55 °C to +125 °C - validated for use in motor controls, power supplies, and under-hood electronics. |
| Pb-free & RoHS compliance | Meets JEDEC UB specifications and environmental regulations - suitable for global industrial and automotive production. |
Applications
| Industrial PLC I/O Interface | Automotive Body Control Module |
|---|---|
Use Scenario: Interfacing 12 V analog sensor outputs or switch inputs to a 5 V microcontroller in programmable logic controllers. IC Role / Device Role / Timing Role: Level-shifting inverter buffer that translates 12 V logic states to 5 V CMOS-compatible signals while rejecting EMI. Use Value: Eliminates need for discrete resistor-divider networks or dedicated level translators - reduces BOM count and layout area. | Use Scenario: Driving 5 V CAN transceiver enable lines or LED indicators from 12 V vehicle battery-sensed GPIOs in body control units. IC Role / Device Role / Timing Role: High-voltage tolerant buffer providing clean, low-jitter enable/disable control with fast rise/fall times (< 60 ns). Use Value: Ensures robust switching despite battery voltage fluctuations (9–16 V), improving system reliability during cold-crank conditions. |
| Mixed-Voltage Sensor Hub | Legacy Equipment Retrofit |
Use Scenario: Aggregating signals from diverse sensors (3.3 V, 5 V, 12 V) into a single 3.3 V ADC interface in IoT edge gateways. IC Role / Device Role / Timing Role: Six-channel bidirectional voltage translator operating as non-inverting buffer (via double inversion) or true inverter. Use Value: Enables unified firmware handling of heterogeneous sensor inputs without custom per-channel circuitry. | Use Scenario: Replacing obsolete 74HCT series buffers in aging test equipment where 12 V logic coexists with modern 3.3 V controllers. IC Role / Device Role / Timing Role: Pin-compatible functional replacement offering wider VDD range, lower quiescent current, and improved noise immunity. Use Value: Extends service life of legacy systems with zero PCB redesign - only firmware timing validation required. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar hex inverter/buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CD4049UBE | Same pinout and function but rated only to 15 V max VDD; lacks VIN > VDD specification and has lower sink current (16 mA @ 15 V). | Suitable for 5–15 V systems without overvoltage input requirements; not recommended for 18 V operation or >12 V input scenarios. | Select CD4049UBE only if supply stays ≤15 V and inputs never exceed VDD - otherwise MC14049UBFELG offers superior margin. |
| SN74HC04DR | CMOS hex inverter with 2–6 V VDD range; VIH/VIL fixed to VDD-dependent thresholds; no VIN > VDD support; 4 mA IOL max at 5 V. | Optimized for 3.3 V/5 V digital logic only; requires level shifters for >6 V interfacing; unsuitable for direct 12 V sensor input. | Choose SN74HC04DR for pure low-voltage logic buffering; use MC14049UBFELG when interfacing higher-voltage subsystems without added components. |
Compared with CD4049UBE and SN74HC04DR, the MC14049UBFELG uniquely supports 18 V operation and input overvoltage tolerance - delivering design flexibility in mixed-voltage industrial and automotive systems where other hex inverters require supplemental protection or translation circuitry.
Availability
MC14049UBFELG is available at Aetrix Electronics and suitable for industrial automation, automotive body electronics, and legacy equipment retrofit requiring stable component supply across extended temperature and voltage ranges.
Supply support for MC14049UBFELG 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
onsemi (formerly ON Semiconductor) is a global semiconductor supplier focused on energy-efficient electronics, delivering silicon solutions for automotive, industrial, cloud, medical, and IoT applications.
The MC14049UBFELG belongs to the legacy MC14000-series CMOS logic family, engineered for robust, wide-supply-range interfacing in harsh environments - emphasizing reliability, noise immunity, and mixed-voltage compatibility over raw speed.
FAQ
What is the maximum input voltage allowed on MC14049UBFELG inputs?
The MC14049UBFELG permits input voltages from −0.5 V to +18.0 V, regardless of VDD setting. This means inputs can safely exceed VDD - for example, a 12 V signal may be applied while VDD = 5 V. Exceeding +18.0 V risks permanent damage per the Absolute Maximum Ratings table.
Does MC14049UBFELG support true TTL-load driving at 5 V?
Yes - when VDD = 5.0 V, the MC14049UBFELG guarantees VOL ≤ 0.4 V and IOL ≥ 3.2 mA per output, meeting the definition of "two TTL/DTL loads" per the datasheet. This makes MC14049UBFELG suitable for direct interface to legacy TTL circuits without pull-up resistors.
Are pins 13 and 16 on MC14049UBFELG required to be left unconnected?
Yes - pins 13 and 16 are explicitly marked "NC" (No Connection) in the datasheet and have no internal bond wires or circuit connections. They must remain unconnected; grounding or tying them to VDD provides no benefit and may risk mechanical stress or solder bridging.
What is the quiescent supply current of MC14049UBFELG at 15 V?
At VDD = 15 V and TA = 25 °C, the MC14049UBFELG draws ≤ 4.0 µA of quiescent current per package (IDD). This ultra-low static power enables use in always-on monitoring circuits and battery-operated systems where standby current is critical.
Can MC14049UBFELG be used as a non-inverting buffer?
Yes - by cascading two MC14049UBFELG inverters (e.g., INA → OUTA → INB → OUTB), the net result is a non-inverting buffer with predictable delay and drive strength. Each stage retains full VIH/VIL and output drive specs, preserving signal integrity across the pair.
MC14049UBFELG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 4000B
- Package/Case:
- 16-SOIC (0.209", 5.30mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Logic Type:
- Inverter
- Number of Circuits:
- 6
- Number of Inputs:
- 1
- Features:
- -
- Voltage - Supply:
- 3V ~ 18V
- Current - Quiescent (Max):
- 4 µA
- Current - Output High, Low:
- 10mA, 40mA
- Input Logic Level - Low:
- 1V ~ 2.5V
- Input Logic Level - High:
- 4V ~ 12.5V
- Max Propagation Delay @ V, Max CL:
- 50ns @ 15V, 50pF
- Operating Temperature:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOEIAJ
MC14049UBFELG FAQ
1.How can I place an order for MC14049UBFELG through Aetrix?
Please submit a Request for Quotation (RFQ) for MC14049UBFELG 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 MC14049UBFELG reliable?
The price and inventory of MC14049UBFELG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC14049UBFELG is usually 5 days.
3.What payment methods are accepted for MC14049UBFELG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC14049UBFELG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC14049UBFELG?
MC14049UBFELG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC14049UBFELG 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 MC14049UBFELG?
For technical support, including MC14049UBFELG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC14049UBFELG requirements.
6.How does Aetrix verify that MC14049UBFELG is sourced from the original manufacturer or authorized distributors?
All MC14049UBFELG 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 MC14049UBFELG meets industry standards.
7.What is the process for return or replacement of MC14049UBFELG?
All MC14049UBFELG units undergo pre-shipment inspection (PSI). If there is an issue with MC14049UBFELG, 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 MC14049UBFELG part is unused and in its original packaging.
Return procedure for MC14049UBFELG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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