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onsemi MC14012BDG
- Part No.:
- MC14012BDG
- Manufacturer:
- onsemi
- Category:
- Gates and Inverters
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MC14012BDG.pdf
- Description:
- IC GATE NAND 2CH 4-INP 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:688
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Product details
Overview
MC14012BDG from onsemi is a dual 4-input NAND gate IC built with complementary MOS (CMOS) technology, designed for low-power logic functions in digital control and interface circuits. It operates across 3.0–18.0 VDC supply, delivers ±10 mA output drive per pin, exhibits 5.0 pF typical input capacitance, and supports operation from −55 °C to +125 °C - ideal for industrial timing, power sequencing, and sensor signal conditioning.
For engineers reviewing the MC14012BDG datasheet, pinout, applications, or equivalent options, key selection considerations include its wide VDD range, buffered outputs, double-diode input protection, SOIC-14 Pb-free package, and compatibility with legacy CD4000B-series designs.
Technical Context
The MC14012BDG integrates two independent 4-input NAND gates in a single monolithic CMOS structure using P- and N-channel enhancement-mode transistors. Each gate features fully buffered outputs and double-diode ESD protection on all inputs, ensuring robust noise immunity and latch-up resistance.
It requires unused inputs tied to VDD or VSS to prevent floating states, and supports driving two low-power TTL loads or one low-power Schottky TTL load over its full temperature range. Its propagation delay ranges from 50 ns to 300 ns depending on VDD and load conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3.0 VDC to 18.0 VDC - enables direct use in battery-powered, industrial, and automotive subsystems without level-shifting. |
| Output Drive Current | ±10 mA per pin - sufficient to directly drive multiple low-power TTL loads without external buffers. |
| Input Capacitance | 5.0 pF typical - minimizes capacitive loading on upstream drivers and preserves high-speed signal integrity. |
| Operating Temperature | −55 °C to +125 °C - certified for extended industrial and under-hood automotive environments. |
| Propagation Delay | 50 ns at VDD = 15 V, CL = 50 pF - defines maximum operating frequency in combinational logic paths. |
| Quiescent Current | 0.0015 A at VDD = 15 V - ensures ultra-low static power consumption in always-on monitoring circuits. |
| DC Noise Margin | 2.5 V at VDD = 15 V - provides strong immunity against voltage transients in electrically noisy systems. |
Pinout & Package
MC14012BDG is housed in a 14-pin SOIC-14 (Case 751A) Pb-free surface-mount package measuring 8.55 mm × 3.80 mm × 1.35 mm, with 1.27 mm pitch and gull-wing leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 13 | Input A1, A2 | First and second inputs of Gate A - must be tied to VDD if unused to avoid undefined logic state. |
| 2, 9 | Input A3, A4 | Third and fourth inputs of Gate A - share same logic function as Pins 1 and 13. |
| 3, 10 | Input B1, B2 | First and second inputs of Gate B - electrically identical to Gate A inputs but isolated. |
| 4, 11 | Input B3, B4 | Third and fourth inputs of Gate B - no internal connection to Gate A pins. |
| 5, 12 | Outputs OUTA, OUTB | Active-low NAND outputs - buffered, capable of sourcing/sinking ±10 mA. |
| 6, 8 | No Connection | Internally unconnected - must remain unpopulated and unconnected on PCB. |
| 7 | VSS | Ground reference - common return for all logic and power paths; low-impedance connection required. |
| 14 | VDD | Positive supply rail - decoupling capacitor (0.1 µF) recommended within 5 mm of this pin. |
Key Features
| Feature | Design Value |
|---|---|
| Wide Supply Range | 3.0–18.0 VDC operation eliminates need for separate voltage regulators in multi-rail systems. |
| Input Protection | Double-diode clamping on all inputs prevents damage from ESD events up to ±2 kV (HBM). |
| Buffered Outputs | Internal output buffering isolates gate logic from load variations, stabilizing propagation delay and fan-out. |
| Pb-Free & RoHS | Meets EU RoHS Directive 2011/65/EU and is compatible with lead-free reflow profiles (peak 260 °C). |
| CD4000B Drop-in | Pin-for-pin replacement for CD4012B - allows direct upgrade of legacy 4000-series designs without layout change. |
Applications
| Industrial Power Sequencing | Automotive Sensor Interface |
|---|---|
Use Scenario: Controlling startup order of multiple DC-DC converters in programmable power supplies. IC Role / Device Role / Timing Role: Dual NAND gate implements AND-OR logic for enable signal arbitration and fault lockout. Use Value: Wide VDD range allows direct monitoring of 12 V and 5 V rails; high noise margin prevents false triggering during load transients. | Use Scenario: Signal conditioning and debounce for Hall-effect position sensors in engine control units. IC Role / Device Role / Timing Role: NAND-based SR latch and edge detector for converting analog sensor pulses into clean digital timing signals. Use Value: −55 °C to +125 °C rating matches under-hood thermal requirements; buffered outputs drive long traces to microcontroller GPIOs. |
| Medical Equipment Control Logic | Test & Measurement Instrumentation |
Use Scenario: Safety interlock validation in portable diagnostic devices requiring redundant enable paths. IC Role / Device Role / Timing Role: Dual 4-input NAND performs majority voting across four independent hardware watchdog signals. Use Value: Low quiescent current (1.5 µA at 15 V) extends battery life; double-diode input protection guards against ESD during field servicing. | Use Scenario: Clock gating and trigger synchronization in benchtop oscilloscopes and logic analyzers. IC Role / Device Role / Timing Role: NAND gate combines system clock with user-trigger condition to generate precise acquisition windows. Use Value: 50 pF input capacitance minimizes skew between parallel logic paths; SOIC-14 footprint simplifies prototyping on standard test PCBs. |
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 logic function and pinout, but rated only to +85 °C and not Pb-free; uses older ceramic DIP or PDIP packaging. | Not suitable for automotive or extended-temperature industrial use; requires through-hole assembly. | Select when legacy DIP prototyping or MIL-PRF-38535 compliance is required, not for new surface-mount designs. |
| 74HC20PW | High-speed CMOS variant with 2 V–6 V supply range; faster propagation (15 ns typ), lower drive (±4 mA), and no input protection diodes. | Better for 3.3 V systems and high-frequency logic, but lacks ESD robustness and wide-VDD flexibility. | Choose for speed-critical 5 V or 3.3 V digital systems where noise immunity and temperature range are secondary. |
Compared with CD4012BE and 74HC20PW, MC14012BDG uniquely balances wide supply voltage (3–18 V), extended temperature support (−55 to +125 °C), integrated input protection, and Pb-free SOIC-14 compatibility - making it optimal for ruggedized embedded control where reliability and design longevity matter.
Availability
MC14012BDG is available at Aetrix Electronics and suitable for industrial power sequencing, automotive sensor interface, and medical equipment control logic requiring stable component supply across extended temperature and voltage ranges.
Supply support for MC14012BDG 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 for automotive, industrial, cloud, and medical applications.
The MC14012BDG belongs to onsemi's legacy CMOS logic family, engineered for high noise immunity and low static power in harsh-environment digital control systems.
FAQ
What is the maximum supply voltage for MC14012BDG?
The MC14012BDG supports a DC supply voltage range of −0.5 V to +18.0 V referenced to VSS. The absolute maximum rating is +18.0 V; exceeding this may cause permanent damage. For reliable operation, VDD should be maintained between 3.0 V and 18.0 V, with derating applied above 65 °C in the SOIC-14 package per datasheet Note 1.
Does MC14012BDG require external pull-up resistors on its inputs?
No, MC14012BDG does not require external pull-up resistors because its CMOS inputs have extremely high impedance and defined logic thresholds (VIH/VIL). However, unused inputs must be actively tied to either VDD or VSS - floating inputs can cause excessive current draw and logic instability. This requirement applies to all four inputs per gate in MC14012BDG.
Is MC14012BDG pin-compatible with CD4012B devices?
Yes, MC14012BDG is explicitly specified as a pin-for-pin replacement for corresponding CD4000 series B-suffix devices, including CD4012B. Pin assignments, logic function, and electrical behavior match identically in the SOIC-14 package. No PCB layout changes are needed when upgrading from CD4012B to MC14012BDG.
What is the output drive capability of MC14012BDG at 12 V supply?
At VDD = 12 V, MC14012BDG delivers a minimum sink current (IOL) of 3.4 mA and source current (IOH) of −1.3 mA while maintaining VOH ≥ 11.0 V and VOL ≤ 1.5 V across −55 °C to +125 °C. These values meet the specification for driving one low-power Schottky TTL load, confirmed in the Electrical Characteristics table on page 3 of the datasheet.
Can MC14012BDG be used in automotive applications?
While MC14012BDG itself is not AEC-Q100 qualified, the NLV14012BDR2G variant - sharing identical logic, pinout, and SOIC-14 package - is automotive-grade and PPAP-capable. MC14012BDG may be used in non-safety-critical automotive subsystems where extended temperature operation (−55 °C to +125 °C) and robust ESD protection are beneficial, but formal qualification requires the NLV prefix part.
MC14012BDG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 4000B
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- 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
MC14012BDG FAQ
1.How can I place an order for MC14012BDG through Aetrix?
Please submit a Request for Quotation (RFQ) for MC14012BDG 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 MC14012BDG reliable?
The price and inventory of MC14012BDG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC14012BDG is usually 5 days.
3.What payment methods are accepted for MC14012BDG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC14012BDG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC14012BDG?
MC14012BDG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC14012BDG 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 MC14012BDG?
For technical support, including MC14012BDG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC14012BDG requirements.
6.How does Aetrix verify that MC14012BDG is sourced from the original manufacturer or authorized distributors?
All MC14012BDG 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 MC14012BDG meets industry standards.
7.What is the process for return or replacement of MC14012BDG?
All MC14012BDG units undergo pre-shipment inspection (PSI). If there is an issue with MC14012BDG, 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 MC14012BDG part is unused and in its original packaging.
Return procedure for MC14012BDG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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