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onsemi MC14012BD
- Part No.:
- MC14012BD
- Manufacturer:
- onsemi
- Category:
- Gates and Inverters
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MC14012BD.pdf
- Description:
- IC GATE NAND 2CH 4-INP 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,721
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Product details
Overview
MC14012BD from onsemi is a dual 4-input NAND gate IC built with complementary MOS (CMOS) technology, designed for low-power digital logic functions in noise-sensitive environments. It operates across 3.0–18.0 VDC supply, delivers ±10 mA output drive per pin, supports −55°C to +125°C ambient range, and features double diode input protection - commonly used in industrial control sequencers and battery-powered instrumentation.
For engineers reviewing the MC14012BD datasheet, pinout, applications, or equivalent options, key selection criteria include its wide VDD range, rail-to-rail input compatibility, guaranteed DC noise margins (1.0 V at 5 V), SOIC-14 package footprint, and compatibility with legacy CD4000-series designs.
Technical Context
The MC14012BD implements two independent 4-input NAND gates using P- and N-channel enhancement-mode MOSFETs in a monolithic CMOS structure. Each gate exhibits buffered outputs, defined VIH/VIL thresholds across 5/10/15 VDD, and guaranteed VOL ≤ 0.05 V and VOH ≥ 4.95 V at 5 V.
Its switching behavior is characterized by propagation delays of 50–300 ns (CL = 50 pF, TA = 25°C), rise/fall times scalable with load capacitance, and quiescent current as low as 0.5 µA at 25°C - enabling stable operation in high-impedance, low-noise signal routing paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3.0–18.0 VDC: Enables direct interface with diverse logic families and battery-based systems without level-shifting. |
| Output Drive Capability | ±10 mA per pin: Sufficient to drive two low-power TTL loads or one LS-TTL load across full temperature range. |
| Input Voltage Thresholds | VIL ≤ 1.5 V / VIH ≥ 3.5 V at 5 VDD: Provides 1.0 V DC noise margin - critical for robust operation in electrically noisy industrial settings. |
| Propagation Delay | 50–300 ns (CL = 50 pF): Predictable timing performance suitable for synchronous control logic and state-machine clocking. |
| Quiescent Current | 0.5–30 µA (5–15 VDD, 25°C): Ultra-low static power enables multi-gate integration in energy-constrained embedded subsystems. |
| Operating Temperature | −55°C to +125°C: Qualified for extended industrial and under-hood automotive applications without derating. |
| Input Protection | Double diode clamping on all inputs: Prevents latch-up and ESD-induced damage in unshielded I/O interfaces. |
Pinout & Package
MC14012BD is housed in a 14-pin SOIC-14 (Case 751A) package with 1.27 mm pitch, 8.55–8.75 mm body width, and Pb-free finish. Pin 7 is VSS (ground), Pin 14 is VDD (supply), Pins 6 and 8 are no-connect (NC), and all unused inputs must be tied to VDD.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 13 | OUTA / OUTB | Buffered NAND output terminals - capable of sourcing/sinking ±10 mA with rail-aligned VOH/VOL. |
| 2, 3, 4, 5 / 9, 10, 11, 12 | IN1A–IN4A / IN1B–IN4B | Four dedicated inputs per gate - high-impedance CMOS nodes requiring explicit VDD or VSS termination when unused. |
| 7 | VSS | Ground reference for all internal logic and output stages - must be low-inductance connection for noise immunity. |
| 14 | VDD | Primary power supply terminal - accepts 3–18 VDC; decoupling capacitor required within 1 cm for stable switching. |
| 6, 8 | NC | No internal connection - must remain unconnected; not usable as spare I/O or thermal pad. |
Key Features
| Feature | Design Value |
|---|---|
| Wide Supply Range | 3.0–18.0 VDC operation eliminates need for separate voltage regulators in mixed-supply systems. |
| Rail-to-Rail Input Compatibility | Inputs accept voltages from VSS to VDD - simplifies interfacing with analog comparators, microcontroller GPIO, and sensor outputs. |
| Guaranteed Noise Immunity | 1.0 V minimum DC noise margin at 5 V ensures reliable logic decisions in presence of coupled transients or ground bounce. |
| Pb-Free & RoHS Compliant | Meets global environmental compliance requirements without performance trade-offs or solderability degradation. |
| CD4000-Series Drop-in Replacement | Pin-for-pin compatible with CD4012B - enables legacy design refresh without PCB revision or firmware changes. |
Applications
| Industrial PLC I/O Modules | Battery-Powered Sensor Nodes |
|---|---|
Use Scenario: Logic-level translation and signal conditioning in programmable logic controller backplanes where multiple discrete sensors feed into centralized decision circuitry. IC Role / Device Role / Timing Role: Dual NAND gate performs active-low enable decoding and status flag combination before transmission to microcontroller. Use Value: Wide VDD range allows direct 12 V bus powering; low IDD minimizes standby current draw across dozens of parallel modules. |
Use Scenario: Wake-up logic and data-ready arbitration in ultra-low-power environmental monitoring nodes powered by coin-cell batteries. IC Role / Device Role / Timing Role: One gate monitors sensor interrupt and system ready signals; second gate controls RF transmit enable based on combined conditions. Use Value: Sub-microamp quiescent current extends battery life beyond 5 years; input protection prevents false triggers from ESD-prone sensor cables. |
| Automotive Body Control Units | Legacy Equipment Interface Adapters |
Use Scenario: Interfacing mechanical switch arrays and LED drivers in door module assemblies subject to wide temperature swings and conducted noise. IC Role / Device Role / Timing Role: Debounces switch inputs and generates synchronized enable pulses for local power switches and indicator drivers. Use Value: −55°C to +125°C rating ensures reliability under hood; double-diode input protection withstands ISO 7637-2 pulse transients. |
Use Scenario: Bridging vintage 15 V logic systems (e.g., test equipment, lab instruments) with modern 3.3 V or 5 V controllers via level-tolerant gating. IC Role / Device Role / Timing Role: Performs AND/NAND logic on mixed-voltage control lines while preserving signal integrity and timing predictability. Use Value: Single-supply operation up to 18 V eliminates external level shifters; guaranteed VOL/VOH specs ensure clean transitions across voltage domains. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual 4-input NAND gate applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CD4012BE | Same pinout and logic function but rated only to +85°C; higher typical IDD (1 µA vs. 0.5 µA at 5 V); no AEC-Q100 qualification. | Suitable for commercial-grade consumer electronics but not for extended-temperature industrial or automotive use. | Select CD4012BE only if cost is primary constraint and operating temperature remains below 85°C. |
| 74HC20D | Higher speed (tPD ≈ 13 ns @ 5 V), narrower VDD range (2–6 V), lower drive (±4 mA), and no input protection diodes. | Preferred in high-speed digital systems with regulated 5 V supplies, but requires external ESD protection and cannot replace MC14012BD in wide-VDD or harsh-environment roles. | Choose 74HC20D when timing-critical 5 V logic is needed; avoid where supply varies or ESD risk exists. |
Compared with CD4012BE and 74HC20D, MC14012BD uniquely combines extended temperature support, wide supply tolerance, integrated input protection, and ultra-low standby current - making it the sole choice for ruggedized, battery-operated, or mixed-voltage industrial logic functions.
Availability
MC14012BD is available at Aetrix Electronics and suitable for industrial control systems, battery-powered instrumentation, and automotive body electronics requiring stable component supply across long product lifecycles.
Supply support for MC14012BD 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 is a global semiconductor supplier specializing in energy-efficient, high-reliability components for automotive, industrial, and cloud power applications.
The MC14012BD belongs to onsemi's legacy CMOS logic family, engineered for robustness in harsh environments and backward compatibility with industry-standard 4000-series designs.
FAQ
What is the maximum supply voltage rating for MC14012BD?
The MC14012BD has an absolute maximum DC supply voltage (VDD) of +18.0 V, with recommended operating range from 3.0 V to 18.0 V. Exceeding 18.0 V risks permanent damage per the Absolute Maximum Ratings table. The device maintains specified VOH/VOL and timing performance across this full range, enabling flexible integration in systems with variable or unregulated rails.
Does MC14012BD require external pull-up or pull-down resistors on unused inputs?
No - unused inputs of the MC14012BD must be tied directly to either VDD or VSS (not left floating), but external resistors are unnecessary. The datasheet explicitly states that unused inputs should be connected to a logic voltage level; internal CMOS structure ensures stable biasing without added components. Leaving inputs unconnected may cause oscillation or excessive current draw.
Is MC14012BD pin-compatible with CD4012B devices?
Yes - the MC14012BD is specified as a pin-for-pin replacement for corresponding CD4000-series B-suffix devices including CD4012B. Pin assignments, electrical behavior, and functional truth tables match exactly. This allows drop-in substitution in existing designs without layout modification, provided temperature and reliability requirements align with MC14012BD's extended −55°C to +125°C rating.
What is the guaranteed output voltage swing for MC14012BD at 5 V supply?
At VDD = 5.0 V, the MC14012BD guarantees VOH ≥ 4.95 V and VOL ≤ 0.05 V under load (IOL = 0.64 mA, IOH = –0.64 mA). These values ensure >4.9 V high-level and <50 mV low-level outputs - sufficient to meet TTL and CMOS input thresholds with margin, even across temperature extremes and process variation.
Can MC14012BD drive standard TTL loads directly?
Yes - the MC14012BD is explicitly rated to drive two low-power TTL (LPTTL) loads or one low-power Schottky TTL (LS-TTL) load over its full −55°C to +125°C operating range. Its ±10 mA output drive capability exceeds the 0.4 mA sink / 0.02 mA source requirements of LSTTL, ensuring reliable interfacing without buffer amplification.
MC14012BD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 4000B
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Logic Type:
- NAND Gate
- Number of Circuits:
- 2
- Number of Inputs:
- 4
- Features:
- -
- Voltage - Supply:
- 3V ~ 18V
- Current - Quiescent (Max):
- 1 µA
- Current - Output High, Low:
- 8.8mA, 8.8mA
- Input Logic Level - Low:
- 1.5V ~ 4V
- Input Logic Level - High:
- 3.5V ~ 11V
- Max Propagation Delay @ V, Max CL:
- 100ns @ 15V, 50pF
- Operating Temperature:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
MC14012BD FAQ
1.How can I place an order for MC14012BD through Aetrix?
Please submit a Request for Quotation (RFQ) for MC14012BD 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 MC14012BD reliable?
The price and inventory of MC14012BD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC14012BD is usually 5 days.
3.What payment methods are accepted for MC14012BD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC14012BD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC14012BD?
MC14012BD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC14012BD 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 MC14012BD?
For technical support, including MC14012BD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC14012BD requirements.
6.How does Aetrix verify that MC14012BD is sourced from the original manufacturer or authorized distributors?
All MC14012BD 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 MC14012BD meets industry standards.
7.What is the process for return or replacement of MC14012BD?
All MC14012BD units undergo pre-shipment inspection (PSI). If there is an issue with MC14012BD, 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 MC14012BD part is unused and in its original packaging.
Return procedure for MC14012BD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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