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

NXP Semiconductors HEF4011UBT,652

Name: HEF4011UBT,652
Brand: NXP Semiconductors
SKU: HEF4011UBT,652
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: HEF4011UBT,652

Manufacturer:: NXP Semiconductors

Category:: Gates and Inverters

Package:: 14-SOIC (0.154", 3.90mm Width)

Datasheet:: HEF4011UBT,652.pdf

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

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Product details

Overview

HEF4011UBT,652 from NXP Semiconductors (formerly Philips) is a quadruple 2-input unbuffered NAND gate IC in 14-lead SO plastic package (SOT108-1), operating from 3 V to 15 V supply, with propagation delays as low as 17 ns at 15 V and input capacitance of 10 pF. It serves as a discrete logic building block in timing, oscillator, and analog-compatible digital interface circuits.

For engineers reviewing the HEF4011UBT,652 datasheet, HEF4011UBT,652 pinout, HEF4011UBT,652 application, or HEF4011UBT,652 equivalent, key selection considerations include unbuffered gate architecture, supply voltage range (3–15 V), load-dependent propagation delay, input capacitance, and suitability for mixed-signal oscillator and amplifier configurations.

Technical Context

The HEF4011UBT,652 implements four independent 2-input NAND gates using unbuffered CMOS transistors - no internal buffering stage, resulting in asymmetric output drive and voltage-dependent switching thresholds. Its transfer characteristics and forward transconductance (g_fs) are explicitly characterized across 5 V, 10 V, and 15 V supply conditions.

Propagation delays (t_PHL, t_PLH) and output transition times (t_THL, t_TLH) follow linear CL-dependent formulas per supply voltage, enabling precise timing prediction in capacitive-loaded designs. Input rise/fall times ≤20 ns are specified for AC characterization.

Key Specifications

Parameter	Value and Actual Design Meaning
Logic Function	Quadruple 2-input NAND - four independent gates, no internal buffering
Supply Voltage Range	3 V to 15 V - supports wide-voltage industrial and legacy systems
Input Capacitance	10 pF - defines high-frequency loading on driving stages
Propagation Delay (15 V)	17 ns (t_PLH) / 20 ns (t_PHL) at CL = 50 pF - enables ~30 MHz max toggle rate
Dynamic Power (10 V)	5000 f_i + Σ(f_oC_L) × V_DD² µW - quantifies switching power vs. frequency and load
Output Transition Time (10 V)	30 ns (t_THL) / 30 ns (t_TLH) at CL = 50 pF - impacts signal integrity in RC-loaded nodes

Pinout & Package

HEF4011UBT,652 is housed in a 14-lead small-outline (SO) plastic package per SOT108-1 outline, with 1.27 mm lead pitch and gull-wing terminations suitable for surface-mount reflow assembly.

Pin/Terminal	Circuit Role	Design Meaning
1, 2, 5, 6, 8, 9, 12, 13	Input	Eight total inputs across four NAND gates (A1/B1, A2/B2, A3/B3, A4/B4)
3, 4, 10, 11	Output	Four independent NAND outputs (Y1–Y4); unbuffered, asymmetrical drive
7	VSS	Ground reference for all gates; must be low-impedance return path
14	VDD	Positive supply rail (3–15 V); decoupling required near pin

Key Features

Feature	Design Value
Unbuffered CMOS architecture	Enables analog-compatible operation (e.g., linear amplifier, crystal oscillator) via controlled biasing
Supply-voltage-scalable timing	Propagation and transition times defined by explicit CL-dependent formulas per VDD (5/10/15 V)
High-noise-immunity inputs	VIH/VIL thresholds scale with VDD (e.g., VIH ≈ 0.7×VDD), reducing false triggering in noisy environments
Low static current	IDD negligible in static state - supports ultra-low-power standby in battery-backed systems

Applications

Astable Relaxation Oscillator	Crystal Oscillator
Use Scenario: Generating square-wave clock signals in low-cost microcontroller peripherals or LED flashers where precision timing is not critical. IC Role / Device Role / Timing Role: Two gates configured as cross-coupled inverters with RC feedback; third gate buffers output. Use Value: Eliminates need for dedicated oscillator ICs; frequency set by R1C1 with <10% variation over 3–15 V supply range.	Use Scenario: Building compact, low-component-count crystal oscillators for real-time clocks or sensor interfaces. IC Role / Device Role / Timing Role: Single gate biased into linear region to act as gain element; crystal and load capacitors complete Pierce topology. Use Value: Leverages unbuffered gate's analog gain (measured up to 20× at 10 V) and low input capacitance for stable 32.768 kHz or fundamental-mode operation.
Analog Inverter Amplifier	Mixed-Signal Level Shifter
Use Scenario: Converting slow-rising analog sensor outputs (e.g., thermistor divider) into clean digital thresholds in data acquisition front-ends. IC Role / Device Role / Timing Role: One input tied to VDD to configure gate as symmetrical inverting amplifier; second input receives analog signal. Use Value: Provides rail-to-rail output swing and adjustable gain via external feedback, without requiring op-amps or external bias networks.	Use Scenario: Interfacing 5 V logic to 12 V control lines in industrial PLC I/O modules or motor driver enable circuits. IC Role / Device Role / Timing Role: NAND gate used with pull-up on one input to create active-low level translator with hysteresis. Use Value: Uses inherent VIH/VIL scaling (e.g., VIH ≈ 3.5 V at VDD = 5 V) to reject noise while translating between non-standard voltage domains.

Astable Relaxation Oscillator

Crystal Oscillator

Use Scenario: Generating square-wave clock signals in low-cost microcontroller peripherals or LED flashers where precision timing is not critical.

IC Role / Device Role / Timing Role: Two gates configured as cross-coupled inverters with RC feedback; third gate buffers output.

Use Value: Eliminates need for dedicated oscillator ICs; frequency set by R1C1 with <10% variation over 3–15 V supply range.

Use Scenario: Building compact, low-component-count crystal oscillators for real-time clocks or sensor interfaces.

IC Role / Device Role / Timing Role: Single gate biased into linear region to act as gain element; crystal and load capacitors complete Pierce topology.

Use Value: Leverages unbuffered gate's analog gain (measured up to 20× at 10 V) and low input capacitance for stable 32.768 kHz or fundamental-mode operation.

Analog Inverter Amplifier

Mixed-Signal Level Shifter

Use Scenario: Converting slow-rising analog sensor outputs (e.g., thermistor divider) into clean digital thresholds in data acquisition front-ends.

IC Role / Device Role / Timing Role: One input tied to VDD to configure gate as symmetrical inverting amplifier; second input receives analog signal.

Use Value: Provides rail-to-rail output swing and adjustable gain via external feedback, without requiring op-amps or external bias networks.

Use Scenario: Interfacing 5 V logic to 12 V control lines in industrial PLC I/O modules or motor driver enable circuits.

IC Role / Device Role / Timing Role: NAND gate used with pull-up on one input to create active-low level translator with hysteresis.

Use Value: Uses inherent VIH/VIL scaling (e.g., VIH ≈ 3.5 V at VDD = 5 V) to reject noise while translating between non-standard voltage domains.

Equivalent & Alternatives

The following parts are listed as comparable options for similar unbuffered NAND gate applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
CD4011BE	Same unbuffered 4×2-input NAND function; 14-lead PDIP package; identical AC/DC specs except minor VDD=5 V delay variance	Through-hole mounting only; no SO option; same oscillator/amplifier behavior confirmed in TI datasheet Fig 22–24	Select CD4011BE for through-hole prototyping or legacy board reuse where SO footprint is unavailable
MC14011BDR2G	Onsemi variant with identical SOT108-1 SO package; same 3–15 V range and 10 pF CIN; propagation delays match within 5% at 10/15 V	Qualified to AEC-Q100 Grade 3; preferred for automotive-qualified designs requiring extended temperature validation	Select MC14011BDR2G when automotive-grade qualification or enhanced ESD robustness (±4 kV HBM) is required

Compared with HEF4011UBT,652, CD4011BE offers identical logic and analog functionality but lacks surface-mount packaging, while MC14011BDR2G provides drop-in SO compatibility plus automotive qualification - neither is pin-to-pin identical in marking or thermal resistance, but both support the same circuit topologies without redesign.

Availability

HEF4011UBT,652 is available at Aetrix Electronics and suitable for astable oscillators, crystal timing circuits, analog-compatible inverters, and mixed-signal level-shifting applications requiring stable component supply across industrial, instrumentation, and legacy system upgrades.

Supply support for HEF4011UBT,652 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

NXP Semiconductors is a global semiconductor leader focused on secure connectivity solutions, automotive processing, and industrial edge control ICs.

The HEF4011UBT,652 belongs to the legacy LOCMOS HE4000B logic family - designed specifically for wide-supply-voltage, unbuffered CMOS logic where analog-digital coexistence (e.g., oscillator, amplifier, threshold detection) is required.

FAQ

What is the maximum recommended supply voltage for HEF4011UBT,652?

The absolute maximum supply voltage for HEF4011UBT,652 is 15 V DC, as specified in the Philips 1995 datasheet. Operation above this level risks permanent damage to the unbuffered CMOS structure. At 15 V, propagation delays improve to 17–20 ns (CL = 50 pF), but power dissipation rises quadratically - design margins should include derating for temperature and long-term reliability. HEF4011UBT,652 must never be operated beyond 15 V under any condition.

Can HEF4011UBT,652 be used as a linear amplifier?

Yes - HEF4011UBT,652 can operate in the linear region when one input is tied to VDD and the other receives an analog signal, as documented in Figure 11 and Application Note Fig. 16. Its unbuffered architecture allows controlled biasing, delivering measurable voltage gain (up to ~20× at 10 V). However, gain and linearity depend on supply voltage and load; HEF4011UBT,652 is not a precision amplifier and requires external feedback for stability.

Does HEF4011UBT,652 have built-in input protection diodes?

Yes - HEF4011UBT,652 includes standard CMOS input protection diodes to VDD and VSS, as implied by the "protection diodes" reference in Figure 9 application note and confirmed by LOCMOS family design. These diodes clamp transient overvoltage but limit input voltage to VDD + 0.6 V or VSS − 0.6 V; exceeding these violates absolute maximum ratings. External series resistors are recommended for inputs exposed to >1 mA surge current.

What is the input capacitance of HEF4011UBT,652 and how does it affect high-speed use?

The input capacitance of HEF4011UBT,652 is 10 pF per input, as measured and specified in the AC Characteristics table. This value directly loads upstream drivers, increasing propagation delay and limiting maximum toggle frequency - especially critical in cascaded logic or RC oscillator designs. For example, driving two HEF4011UBT,652 inputs adds 20 pF load; combined with trace capacitance, this may degrade edge rates beyond the ≤20 ns input transition time requirement for guaranteed AC performance.

Is HEF4011UBT,652 RoHS compliant?

HEF4011UBT,652 was originally manufactured pre-RoHS era (1995 datasheet), but current production lots supplied by NXP and authorized distributors meet RoHS Directive 2011/65/EU. The SOT108-1 package uses lead-free terminations and halogen-free molding compound. Always verify compliance via NXP's official product change notices (PCNs) and the HEF4011UBT,652 landing page on nxp.com for the specific date-code batch.

HEF4011UBT,652 Specifications

Product attributes: Attribute value

Manufacturer:: NXP Semiconductors

Series:: 4000B

Package/Case:: 14-SOIC (0.154", 3.90mm Width)

Packaging:: Tube

Product Status:: Obsolete

Logic Type:: NAND Gate

Number of Circuits:: 4

Number of Inputs:: 2

Features:: -

Voltage - Supply:: 3V ~ 15V

Current - Quiescent (Max):: 4 µA

Current - Output High, Low:: 3mA, 3mA

Input Logic Level - Low:: 1V ~ 2.5V

Input Logic Level - High:: 4V ~ 12.5V

Max Propagation Delay @ V, Max CL:: 40ns @ 15V, 50pF

Operating Temperature:: -40°C ~ 85°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 14-SO

HEF4011UBT,652 FAQ

1.How can I place an order for HEF4011UBT,652 through Aetrix?

Please submit a Request for Quotation (RFQ) for HEF4011UBT,652 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 HEF4011UBT,652 reliable?

The price and inventory of HEF4011UBT,652 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HEF4011UBT,652 is usually 5 days.

3.What payment methods are accepted for HEF4011UBT,652?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HEF4011UBT,652 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for HEF4011UBT,652?

HEF4011UBT,652 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your HEF4011UBT,652 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 HEF4011UBT,652?

For technical support, including HEF4011UBT,652 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HEF4011UBT,652 requirements.

6.How does Aetrix verify that HEF4011UBT,652 is sourced from the original manufacturer or authorized distributors?

All HEF4011UBT,652 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 HEF4011UBT,652 meets industry standards.

7.What is the process for return or replacement of HEF4011UBT,652?

All HEF4011UBT,652 units undergo pre-shipment inspection (PSI). If there is an issue with HEF4011UBT,652, 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 HEF4011UBT,652 part is unused and in its original packaging.

Return procedure for HEF4011UBT,652:

1.Submit a request within 90 days.

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

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