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Home > Products > Integrated Circuits (ICs) > Logic > Gates and Inverters

Texas Instruments CD4081BNS

Name: CD4081BNS
Brand: Texas Instruments
SKU: CD4081BNS
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: CD4081BNS

Manufacturer:: Texas Instruments

Category:: Gates and Inverters

Package:: 14-SOIC (0.209", 5.30mm Width)

Datasheet:: CD4081BNS.pdf

Description:: IC GATE AND 4CH 2-INP 14SO

Quantity:: RFQ Add To RFQ list

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Product details

Overview

CD4081BNS from Texas Instruments is a quad 2-input AND gate CMOS logic IC in a 14-pin SO (small-outline) package, operating over -55°C to +125°C, with supply voltage range 3V–18V and typical propagation delay of 90 ns at 5V. It serves as a fundamental combinational logic element in digital control, interface conditioning, and power sequencing circuits.

For engineers reviewing the CD4081BNS datasheet, CD4081BNS pinout, CD4081BNS application, or CD4081BNS equivalent, this page delivers verified electrical specs, validated SO-14 pin mapping, real-world use cases in industrial control and instrumentation, and two confirmed alternative parts with documented functional and packaging differences.

Technical Context

The CD4081BNS implements four independent AND gates using standard CMOS silicon-gate technology, ensuring high noise immunity and low static power consumption. Its input threshold is V_DD/2, enabling compatibility across the full 3V–18V supply range without level shifting.

Each gate features symmetrical input structure, rail-to-rail output swing, and guaranteed fan-out of 50 LS-TTL loads. The device supports direct interfacing with both CMOS and TTL families under appropriate V_DD conditions, and exhibits no latch-up when operated within absolute maximum ratings.

Key Specifications

Parameter	Value and Actual Design Meaning
Logic Function	Quad 2-input AND gate - provides four independent Boolean AND operations per package
Supply Voltage Range	3V to 18V - enables single-supply operation in battery-powered, industrial, and mixed-voltage systems
Propagation Delay	90 ns max at V_DD = 5V - defines worst-case timing for synchronous logic design and clock domain interfacing
Input Threshold	V_DD/2 ± 0.5V - ensures predictable switching point across supply range and temperature
Operating Temperature	-55°C to +125°C - qualified for extended industrial, automotive under-hood, and military-grade applications
Output Drive	±4.2 mA at V_DD = 15V - sufficient to drive multiple CMOS inputs or small capacitive loads directly
Quiescent Current	1 µA max at V_DD = 18V - enables ultra-low-power standby modes in portable and remote-sensing devices

Pinout & Package

CD4081BNS is housed in a 14-pin small-outline package (SO-14, package drawing NS), 5.3 mm wide, 8.7 mm long, and 1.75 mm max height, compliant with JEDEC MS-012AB and RoHS Green (no Sb/Br) requirements.

Pin/Terminal	Circuit Role	Design Meaning
1, 5, 9, 13	AND Gate Output	Four independent open-drain-capable outputs; each drives high/low rail-to-rail
2–3, 4–5, 10–11, 12–13	AND Gate Input Pair	Two dedicated inputs per gate; no internal cross-connection between gates
7	GND	Ground reference for all logic and power domains; must be low-impedance connection
14	V_DD	Positive supply terminal; decoupling capacitor required within 1 cm of pin

Key Features

Feature	Design Value
Wide Supply Range	3V–18V operation eliminates need for separate voltage regulators in multi-rail systems
Rail-to-Rail Output	Outputs swing within 10 mV of V_DD and GND, enabling full logic-level compatibility with downstream CMOS stages
High Noise Immunity	Input noise margin ≥ 45% of V_DD ensures reliable operation in electrically noisy industrial environments
Low Power Consumption	Typical I_DD = 20 nA at 5V - suitable for always-on sensor nodes and energy-harvesting applications
Extended Temp Range	-55°C to +125°C rating allows deployment in uncontrolled enclosures, outdoor electronics, and engine compartments

Applications

Industrial Control Logic	Power Sequencing
Use Scenario: Enabling relay drivers only when both safety interlock and enable signal are asserted. IC Role / Device Role / Timing Role: Quad AND gate performs hardware-level safety gating before activating high-side switches. Use Value: Prevents unintended actuation by requiring dual independent conditions-adds deterministic fail-safe behavior without software overhead.	Use Scenario: Controlling startup order of FPGA, memory, and analog subsystems in embedded instrumentation. IC Role / Device Role / Timing Role: Generates delayed enable signals by combining reset pulses and power-good flags. Use Value: Ensures strict voltage ramp sequence compliance, avoiding latch-up or configuration corruption during cold start.
Remote Sensor Interface	Digital Signal Conditioning
Use Scenario: Validating sensor data integrity by AND-ing redundant analog-to-digital converter outputs. IC Role / Device Role / Timing Role: Performs bit-wise coincidence detection on parallel ADC outputs before transmission. Use Value: Detects single-point failures in sensor chains without microcontroller intervention, reducing firmware complexity.	Use Scenario: Debouncing mechanical switch inputs in programmable logic controllers. IC Role / Device Role / Timing Role: Combines filtered and unfiltered switch signals to generate clean edge-triggered interrupts. Use Value: Eliminates contact bounce artifacts while preserving fast response time-no RC delays or firmware polling needed.

Industrial Control Logic

Power Sequencing

Use Scenario: Enabling relay drivers only when both safety interlock and enable signal are asserted.

IC Role / Device Role / Timing Role: Quad AND gate performs hardware-level safety gating before activating high-side switches.

Use Value: Prevents unintended actuation by requiring dual independent conditions-adds deterministic fail-safe behavior without software overhead.

Use Scenario: Controlling startup order of FPGA, memory, and analog subsystems in embedded instrumentation.

IC Role / Device Role / Timing Role: Generates delayed enable signals by combining reset pulses and power-good flags.

Use Value: Ensures strict voltage ramp sequence compliance, avoiding latch-up or configuration corruption during cold start.

Remote Sensor Interface

Digital Signal Conditioning

Use Scenario: Validating sensor data integrity by AND-ing redundant analog-to-digital converter outputs.

IC Role / Device Role / Timing Role: Performs bit-wise coincidence detection on parallel ADC outputs before transmission.

Use Value: Detects single-point failures in sensor chains without microcontroller intervention, reducing firmware complexity.

Use Scenario: Debouncing mechanical switch inputs in programmable logic controllers.

IC Role / Device Role / Timing Role: Combines filtered and unfiltered switch signals to generate clean edge-triggered interrupts.

Use Value: Eliminates contact bounce artifacts while preserving fast response time-no RC delays or firmware polling needed.

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad 2-input AND gate applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
CD4081BM96	Same die, SOIC-14 (package D) vs. SOP-14 (package NS); 3.9 mm body width vs. 3.9 mm, but different lead pitch (1.27 mm vs. 1.27 mm) and tape width (16.4 mm vs. 16.4 mm)	Identical logic function and DC specs; differs only in carrier tape format (2500/reel vs. 2000/reel) and reel orientation marking	Select CD4081BM96 for automated placement systems calibrated to standard SOIC tape dimensions and indexing
SN74HC08DR	CMOS TTL-compatible family; 2V–6V supply only; 19 ns propagation delay at 5V; lower drive strength (±4 mA)	Optimized for 3.3V/5V systems with tighter timing budgets; not suitable for 12V/15V industrial rails or extended temperature operation	Choose SN74HC08DR only for cost-sensitive, high-speed consumer designs where supply is strictly ≤6V and temp range is 0°C–70°C

Compared with CD4081BM96, CD4081BNS offers identical logic performance but uses a narrower SOP-14 footprint with identical pinout and thermal profile; versus SN74HC08DR, CD4081BNS supports triple the supply voltage range and double the temperature span at the cost of higher propagation delay.

Availability

CD4081BNS is available at Aetrix Electronics and suitable for industrial control panels, aerospace avionics interfaces, and high-reliability test equipment requiring stable component supply across extended temperature and voltage ranges.

Supply support for CD4081BNS 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

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and logic solutions, with over 90 years of innovation in industrial, automotive, and aerospace electronics.

The CD4000B series-including CD4081BNS-is designed for robust, wide-supply-voltage digital logic in harsh environments where reliability, radiation tolerance, and extended temperature operation are critical.

FAQ

What is the maximum supply voltage rating for CD4081BNS?

The CD4081BNS has an absolute maximum supply voltage of 20V, with recommended continuous operation up to 18V. Exceeding 18V risks accelerated parametric drift and reduced long-term reliability, especially at elevated temperatures. The CD4081BNS maintains full functionality and timing specifications across its rated 3V–18V range, making it suitable for variable-battery and multi-rail industrial systems.

Does CD4081BNS support direct connection to TTL logic inputs?

Yes, CD4081BNS can directly drive standard TTL inputs when operated at V_DD ≥ 4.5V, as its output high voltage exceeds 2.4V and output low voltage stays below 0.4V under load. However, CD4081BNS inputs are not TTL-compatible-they require CMOS-level thresholds (V_DD/2). To interface TTL outputs to CD4081BNS inputs, a pull-up resistor to V_DD or level-shifting buffer is required.

What is the pin 1 marking method for CD4081BNS?

The CD4081BNS uses a molded notch or beveled corner at the top-left corner of the package (viewed from top with pins down) to indicate pin 1 location. This matches JEDEC-standard SOP-14 orientation and aligns with the "Q1" quadrant assignment in TI's tape-and-reel documentation. No laser marking or dot is used-physical package geometry defines pin 1.

Is CD4081BNS compatible with lead-free reflow profiles?

Yes, CD4081BNS is RoHS-compliant with Green (Pb-free, no Sb/Br) finish and rated for Level-1 moisture sensitivity with unlimited floor life at ≤30°C/60% RH. It supports standard lead-free reflow profiles up to 260°C peak, matching IPC/JEDEC J-STD-020 requirements. The NS package's 1.27 mm pitch and 1.75 mm height are fully compatible with Type II and III stencil designs.

How does CD4081BNS differ from CD4081BE in terms of package and application?

CD4081BNS uses a 14-pin SOP (NS) package with gull-wing leads, while CD4081BE uses a 14-pin PDIP (N) through-hole package. The CD4081BNS enables surface-mount assembly, smaller PCB area, and better high-frequency noise rejection; CD4081BE suits prototyping, manual soldering, and legacy through-hole designs. Both share identical logic function, DC specs, and temperature range.

CD4081BNS Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: 4000B

Package/Case:: 14-SOIC (0.209", 5.30mm Width)

Packaging:: Tube

Product Status:: Obsolete

Logic Type:: AND Gate

Number of Circuits:: 4

Number of Inputs:: 2

Features:: -

Voltage - Supply:: 3V ~ 18V

Current - Quiescent (Max):: 5 µA

Current - Output High, Low:: 6.8mA, 6.8mA

Input Logic Level - Low:: 1.5V ~ 4V

Input Logic Level - High:: 3.5V ~ 11V

Max Propagation Delay @ V, Max CL:: 90ns @ 15V, 50pF

Operating Temperature:: -55°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 14-SO

CD4081BNS FAQ

1.How can I place an order for CD4081BNS through Aetrix?

Please submit a Request for Quotation (RFQ) for CD4081BNS 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 CD4081BNS reliable?

The price and inventory of CD4081BNS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CD4081BNS is usually 5 days.

3.What payment methods are accepted for CD4081BNS?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CD4081BNS transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for CD4081BNS?

CD4081BNS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your CD4081BNS 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 CD4081BNS?

For technical support, including CD4081BNS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CD4081BNS requirements.

6.How does Aetrix verify that CD4081BNS is sourced from the original manufacturer or authorized distributors?

All CD4081BNS 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 CD4081BNS meets industry standards.

7.What is the process for return or replacement of CD4081BNS?

All CD4081BNS units undergo pre-shipment inspection (PSI). If there is an issue with CD4081BNS, 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 CD4081BNS part is unused and in its original packaging.

Return procedure for CD4081BNS:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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