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onsemi MC14049UBDT
- Part No.:
- MC14049UBDT
- Manufacturer:
- onsemi
- Category:
- Gates and Inverters
- Package:
- -
- Datasheet:
-
MC14049UBDT.pdf
- Description:
- IC INVERTER
- Quantity:
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Inventory:4,032
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Product details
Overview
MC14049UBDT from onsemi is a hex CMOS inverter/buffer IC with P-channel 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 features two unconnected pins (13 and 16). It is commonly used in CMOS-to-TTL/DTL interface circuits at VDD = 5.0 V.
For engineers reviewing the MC14049UBDT datasheet, pinout, applications, or equivalent options, key selection considerations include its wide supply range (3–18 V), VIH > VDD capability, NC pins at 13/16, SOIC-16 vs. TSSOP-16 package differences, and sink/source drive strength across temperature.
Technical Context
The MC14049UBDT implements six independent CMOS inverting buffers using complementary MOS technology, enabling single-supply level shifting without external biasing. Its input stage tolerates voltages up to +18 V regardless of VDD, making it suitable for mixed-voltage domain interfacing.
Each buffer provides rail-to-rail output swing (VOL ≤ 0.05 V at VDD = 5 V, VOH ≥ 4.95 V), with propagation delays ranging from 30 ns to 120 ns (CL = 50 pF, TA = 25°C) depending on supply voltage and transition direction (tPLH/tPHL).
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 exceeding VDD (e.g., 12 V signal into 5 V system), critical for voltage translation. |
| Output Sink Current (IOL) | 3.75 mA (min) at VDD = 5 V, VOL = 0.4 V - drives two TTL/DTL loads directly without external pull-ups. |
| Output Source Current (IOH) | −1.6 mA (min) at VDD = 5 V, VOH = 2.5 V - sufficient for CMOS fan-out and light capacitive loads. |
| Quiescent Supply Current | 1.0 µA (max) at VDD = 5 V, TA = 25°C - supports ultra-low-power standby modes in battery-operated systems. |
| Propagation Delay | 30–120 ns (typical, CL = 50 pF) - predictable timing for clock buffering and signal conditioning below 1 MHz. |
| Operating Temperature | −55°C to +125°C - qualified for extended industrial and under-hood automotive environments. |
Pinout & Package
TSSOP-16 (DT suffix, Case 948F), 4.4 mm × 5.0 mm body, 0.65 mm pitch, exposed pad not electrically connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VDD | Positive supply rail - must be decoupled locally; supports 3–18 V operation. |
| 2 | INA | Inverter A input - accepts logic signals up to +18 V, independent of VDD. |
| 3 | OUTA | Inverter A output - rail-to-rail CMOS output, capable of ±45 mA transient current. |
| 4 | INB | Inverter B input - electrically identical to INA; no internal termination required. |
| 5 | OUTB | Inverter B output - non-inverting buffer path when paired with external feedback (not internal). |
| 6 | INC | Inverter C input - unused inputs must be tied to VSS or VDD to prevent floating-induced shoot-through. |
| 7 | OUTC | Inverter C output - matches electrical specs of OUTA/OUTB; supports same load conditions. |
| 8 | VSS | Ground reference - all voltage ratings referenced to this pin; ESD protection tied here. |
| 9 | IND | Inverter D input - compatible with high-impedance microcontroller GPIOs and analog switches. |
| 10 | OUTD | Inverter D output - capable of driving transmission lines up to 50 pF with <120 ns delay. |
| 11 | INE | Inverter E input - supports hot-swap detection when combined with pull-down resistors. |
| 12 | OUTE | Inverter E output - verified sink performance down to −55°C per JEDEC UB spec. |
| 13 | NC | No internal connection - floating or grounded; no effect on functionality or reliability. |
| 14 | INF | Inverter F input - sixth independent channel; shares same VIH/VIL thresholds as other inputs. |
| 15 | OUTF | Inverter F output - meets VOL ≤ 0.05 V at VDD = 5 V, ensuring clean logic-zero assertion. |
| 16 | NC | No internal connection - must not be used as thermal pad or ground tie unless validated by layout simulation. |
Key Features
| Feature | Design Value |
|---|---|
| VIH exceeds VDD | Supports 12 V inputs on 5 V systems without external clamping diodes or resistive dividers. |
| High noise immunity | Input hysteresis not specified, but guaranteed VIL/VIH margins (e.g., 1.0 V/4.0 V at VDD = 5 V) suppress EMI-induced glitches. |
| Pb-free TSSOP-16 package | RoHS-compliant footprint with 0.65 mm pitch; compatible with standard SMT reflow profiles (peak 260°C). |
| JEDEC UB specification compliance | Validated against industry-standard test methods for AC/DC parametrics, ESD, and thermal stability. |
| Enhanced ESD protection | Withstands ≥2 kV HBM on all inputs - reduces need for external TVS in moderate-noise environments. |
Applications
| Industrial PLC I/O Interface | Automotive Body Control Module |
|---|---|
Use Scenario: Interfacing 12 V sensor outputs to 5 V microcontroller GPIOs in programmable logic controllers. IC Role / Device Role / Timing Role: Level-shifting inverter buffer that translates high-voltage digital signals while maintaining noise margin. Use Value: Eliminates need for discrete resistor-divider networks or dedicated level translators, reducing BOM count and PCB area. | Use Scenario: Driving LED indicators and relay coils from low-voltage MCU outputs in vehicle door modules. IC Role / Device Role / Timing Role: High-current sink driver for active-low indicator control with fast turn-off (<30 ns fall time at 5 V). Use Value: Delivers 3.75 mA minimum sink current at VOL ≤ 0.4 V, ensuring reliable LED dimming and coil deactivation. |
| Mixed-Voltage Sensor Hub | Legacy Equipment Retrofit |
Use Scenario: Aggregating outputs from 3.3 V, 5 V, and 12 V sensors into a unified 5 V data acquisition front-end. IC Role / Device Role / Timing Role: Input-tolerant buffer isolating disparate supply domains while preserving signal integrity. Use Value: Accepts VIH up to +18 V, enabling direct connection of unregulated sensor outputs without signal conditioning. | Use Scenario: Replacing obsolete 74HC04-based timing circuits in aging test equipment requiring 15 V operation. IC Role / Device Role / Timing Role: Drop-in-compatible hex inverter supporting full 3–18 V range and improved ESD robustness. Use Value: Maintains identical pinout and logic function while extending operational life via enhanced thermal derating (up to +125°C). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar hex inverter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CD4049UBE | Same functional topology and pinout; lower max IOL (2.4 mA @ 5 V) and no VIH > VDD guarantee. | Limited to 5 V–15 V systems where input overvoltage is not expected. | Select when cost sensitivity outweighs input voltage flexibility and drive strength requirements. |
| SN74HC04PWR | CMOS design with 2–6 V range only; VIH max = VDD + 0.5 V; higher speed (15 ns typ) but no overvoltage tolerance. | Suitable for modern 3.3 V/5 V digital systems only; requires external level shifters for mixed-voltage use. | Prefer for high-speed, low-voltage logic where VIH > VDD is unnecessary and board space is constrained. |
Compared with CD4049UBE and SN74HC04PWR, the MC14049UBDT uniquely combines 3–18 V operation, guaranteed VIH > VDD, and 3.75 mA sink drive - making it the only choice for ruggedized, multi-rail industrial interfaces without redesign.
Availability
MC14049UBDT is available at Aetrix Electronics and suitable for industrial PLC I/O interface, automotive body control module, and mixed-voltage sensor hub applications requiring stable component supply across extended temperature and voltage ranges.
Supply support for MC14049UBDT 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 innovation for automotive, industrial, cloud, medical, and IoT applications.
The MC14049UBDT belongs to the legacy MC14000 series of CMOS logic devices, engineered for high-noise-immunity, wide-supply operation in harsh environments - particularly where legacy voltage domains coexist with modern low-voltage logic.
FAQ
What is the maximum input voltage rating for MC14049UBDT?
The MC14049UBDT supports an input voltage range of −0.5 V to +18.0 V, independent of VDD. This means inputs can safely exceed the supply voltage - for example, a 12 V signal applied to pin 2 while VDD = 5 V is fully compliant and does not require external clamping. This feature is explicitly verified in the Absolute Maximum Ratings table and confirmed in the "VIN can exceed VDD" feature list.
Does MC14049UBDT have internal pull-up or pull-down resistors on its inputs?
No, the MC14049UBDT does not include internal pull-up or pull-down resistors. Unused inputs must be externally tied to either VSS or VDD to prevent floating states that could cause excessive supply current or erratic switching. This requirement is explicitly stated in the datasheet: "Unused inputs must always be tied to an appropriate logic voltage level (e.g., either VSS or VDD)."
What is the function of pins 13 and 16 on MC14049UBDT?
Pins 13 and 16 on the MC14049UBDT are No Connect (NC) terminals with no internal bonding or circuit connection. The datasheet confirms: "pins 13 and 16 are not connected internally on this device; consequently connections to these terminals will not affect circuit operation." They may be left unconnected, grounded, or routed as needed for mechanical stability - but must not be used for thermal dissipation unless validated.
Can MC14049UBDT drive TTL loads directly?
Yes, the MC14049UBDT can drive two TTL/DTL loads directly when configured as a CMOS-to-TTL converter at VDD = 5.0 V. Per the datasheet: "Two TTL/DTL Loads can be driven… (VDD = 5.0 V, VOL ≤ 0.4 V, IOL ≥ 3.2 mA)." Its guaranteed IOL ≥ 3.75 mA at VOL = 0.4 V satisfies this requirement, eliminating need for external buffer stages.
What package type is used for MC14049UBDT?
The MC14049UBDT uses a TSSOP-16 package (Case 948F), with dimensions 4.4 mm × 5.0 mm and 0.65 mm lead pitch. It is Pb-free and RoHS-compliant, rated for reflow peak temperatures up to 260°C. This differs from the PDIP-16 (CP suffix) and SOIC-16 (D suffix) variants, and is optimized for space-constrained industrial PCBs.
MC14049UBDT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Logic Type:
- -
- Number of Circuits:
- -
- Number of Inputs:
- -
- Features:
- -
- Voltage - Supply:
- -
- Current - Quiescent (Max):
- -
- Current - Output High, Low:
- -
- Input Logic Level - Low:
- -
- Input Logic Level - High:
- -
- Max Propagation Delay @ V, Max CL:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
MC14049UBDT FAQ
1.How can I place an order for MC14049UBDT through Aetrix?
Please submit a Request for Quotation (RFQ) for MC14049UBDT 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 MC14049UBDT reliable?
The price and inventory of MC14049UBDT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC14049UBDT is usually 5 days.
3.What payment methods are accepted for MC14049UBDT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC14049UBDT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC14049UBDT?
MC14049UBDT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC14049UBDT 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 MC14049UBDT?
For technical support, including MC14049UBDT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC14049UBDT requirements.
6.How does Aetrix verify that MC14049UBDT is sourced from the original manufacturer or authorized distributors?
All MC14049UBDT 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 MC14049UBDT meets industry standards.
7.What is the process for return or replacement of MC14049UBDT?
All MC14049UBDT units undergo pre-shipment inspection (PSI). If there is an issue with MC14049UBDT, 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 MC14049UBDT part is unused and in its original packaging.
Return procedure for MC14049UBDT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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