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Home > Products > Integrated Circuits (ICs) > Interface > Analog Switches, Multiplexers, Demultiplexers

NXP Semiconductors 74HC4066PW/AUJ

Name: 74HC4066PW/AUJ
Brand: NXP Semiconductors
SKU: 74HC4066PW/AUJ
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 74HC4066PW/AUJ

Manufacturer:: NXP Semiconductors

Category:: Analog Switches, Multiplexers, Demultiplexers

Package:: 14-TSSOP (0.173", 4.40mm Width)

Datasheet:: 74HC4066PW/AUJ.pdf

Description:: IC SW SPST-NOX4 95OHM 14TSSOP

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Product details

Overview

74HC4066PW/AUJ from Nexperia is a quad SPST analog switch IC with active-HIGH enable inputs, 14-pin TSSOP package, 45 Ω typical ON resistance at 6 V, ±25 mA switch current rating, and operation from -40 °C to +125 °C. It routes analog or digital signals in test equipment multiplexers, sensor interface conditioning, and audio signal path switching.

For engineers reviewing the 74HC4066PW/AUJ datasheet, 74HC4066PW/AUJ pinout, 74HC4066PW/AUJ application, or 74HC4066PW/AUJ equivalent, key selection criteria include ON-resistance flatness across V_SW, channel-to-channel crosstalk (< -60 dB), isolation in OFF state (-50 dB), and compatibility with 2–10 V supply rails while maintaining CMOS-level input thresholds.

Technical Context

The 74HC4066PW/AUJ implements four independent bidirectional analog switches, each controlled by a dedicated active-HIGH enable (nE) input. Each switch features symmetrical Y/Z terminals with no intrinsic directionality, enabling true analog signal routing in either direction.

Its CMOS-compatible input logic accepts voltages from GND to V_CC, and internal clamp diodes allow safe interfacing to signals exceeding V_CC when used with external current-limiting resistors. The device operates across 2.0–10.0 V supply range and maintains low THD (0.02% typical at 9 V, 1 kHz).

Key Specifications

Parameter	Value and Actual Design Meaning
ON Resistance	45 Ω typical at V_CC = 6 V - ensures minimal voltage drop and signal attenuation in precision analog paths
Switch Current	±25 mA per channel - supports driving moderate loads such as ADC inputs or op-amp feedback networks
Supply Range	2.0 V to 10.0 V - enables use in both low-voltage portable systems and industrial 5/9 V rails
Turn-on Time	10 ns typical at V_CC = 6 V - suitable for high-speed digital multiplexing up to ~35 MHz
Crosstalk	-60 dB at 1 MHz - prevents interference between active and inactive channels in multi-signal systems
Isolation (OFF)	-50 dB at 1 MHz - blocks leakage between disconnected signal paths in measurement front-ends
THD	0.02% typical at 9 V, 1 kHz - preserves fidelity in audio and sensor signal conditioning

Pinout & Package

74HC4066PW/AUJ uses the SOT402-1 (TSSOP14) package: plastic thin shrink small outline, 14 leads, 4.4 mm body width, 0.65 mm pitch, and exposed pad not electrically connected.

Pin/Terminal	Circuit Role	Design Meaning
1, 4, 8, 11	Y1–Y4 (switch terminal)	Bidirectional analog/digital I/O; interchangeable with Z pins for flexible routing
2, 3, 9, 10	Z1–Z4 (switch terminal)	Bidirectional analog/digital I/O; paired with corresponding Y pin
5, 6, 12, 13	E1–E4 (enable)	Active-HIGH control: HIGH enables conduction, LOW disables (high-impedance state)
7	GND	Reference ground for all analog and digital circuitry; must be low-impedance
14	V_CC	Positive supply rail; powers internal logic and switch channel; decoupling required

Key Features

Feature	Design Value
Bidirectional analog switching	Enables signal routing in either direction without polarity constraints-ideal for shared bus or differential pair applications
Input clamp diodes	Permits safe overvoltage tolerance on Y/Z pins up to V_CC + 0.5 V when used with series current-limiting resistors
Low ON-resistance mismatch	ΔR_ON ≤ 3 Ω peak - ensures matched gain/attenuation across channels in instrumentation amplifier front-ends
High OFF-state isolation	-50 dB at 1 MHz - critical for preventing cross-talk in multi-channel data acquisition systems
Wide temperature range	Specified from -40 °C to +125 °C - supports automotive under-hood and industrial control environments

Applications

Automated Test Equipment (ATE) Multiplexer	Sensor Signal Conditioning
Use Scenario: Routing multiple sensor outputs to a single ADC input in a programmable data logger. IC Role / Device Role / Timing Role: Quad SPST analog switch providing channel-selectable signal path under microcontroller GPIO control. Use Value: 45 Ω R_ON minimizes gain error; -60 dB crosstalk prevents contamination between thermocouple or RTD channels.	Use Scenario: Isolating and selecting between bridge-based pressure, load cell, or strain gauge outputs before instrumentation amplifier input. IC Role / Device Role / Timing Role: Low-leakage analog switch enabling sequential sensor excitation and readout without hardware reconfiguration. Use Value: ±1.0 μA OFF-state leakage preserves bridge balance; 0.02% THD maintains measurement linearity.
Audio Signal Path Switching	Digital Logic Level Translation & Multiplexing
Use Scenario: Selecting between microphone preamp outputs or line-level sources in a mixer or audio codec interface. IC Role / Device Role / Timing Role: Bidirectional analog switch handling AC-coupled audio signals up to 20 kHz with minimal distortion. Use Value: 0.02% THD at 1 kHz and -50 dB OFF isolation prevent audible artifacts and source bleed-through.	Use Scenario: Sharing a single UART or SPI bus among multiple peripherals using GPIO-controlled signal gating. IC Role / Device Role / Timing Role: Digital signal switch enabling time-division access to shared communication lines. Use Value: 10 ns turn-on time supports 35 Mbps digital signaling; CMOS input thresholds ensure compatibility with 3.3 V/5 V logic families.

Automated Test Equipment (ATE) Multiplexer

Sensor Signal Conditioning

Use Scenario: Routing multiple sensor outputs to a single ADC input in a programmable data logger.

IC Role / Device Role / Timing Role: Quad SPST analog switch providing channel-selectable signal path under microcontroller GPIO control.

Use Value: 45 Ω R_ON minimizes gain error; -60 dB crosstalk prevents contamination between thermocouple or RTD channels.

Use Scenario: Isolating and selecting between bridge-based pressure, load cell, or strain gauge outputs before instrumentation amplifier input.

IC Role / Device Role / Timing Role: Low-leakage analog switch enabling sequential sensor excitation and readout without hardware reconfiguration.

Use Value: ±1.0 μA OFF-state leakage preserves bridge balance; 0.02% THD maintains measurement linearity.

Audio Signal Path Switching

Digital Logic Level Translation & Multiplexing

Use Scenario: Selecting between microphone preamp outputs or line-level sources in a mixer or audio codec interface.

IC Role / Device Role / Timing Role: Bidirectional analog switch handling AC-coupled audio signals up to 20 kHz with minimal distortion.

Use Value: 0.02% THD at 1 kHz and -50 dB OFF isolation prevent audible artifacts and source bleed-through.

Use Scenario: Sharing a single UART or SPI bus among multiple peripherals using GPIO-controlled signal gating.

IC Role / Device Role / Timing Role: Digital signal switch enabling time-division access to shared communication lines.

Use Value: 10 ns turn-on time supports 35 Mbps digital signaling; CMOS input thresholds ensure compatibility with 3.3 V/5 V logic families.

Equivalent & Alternatives

The following parts are listed as comparable options for similar analog switch applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
74HCT4066PW	TTL-compatible inputs (VIH = 2.0 V min); identical R_ON, timing, and package	Required when driving from legacy 5 V TTL logic without level shifters	Select 74HCT4066PW only if system uses 5 V TTL output drivers; otherwise 74HC4066PW/AUJ offers wider V_CC flexibility
TS5A23157DCUR	Lower R_ON (0.9 Ω typ), 5 V-only supply, smaller 8-pin VSSOP package, no ESD clamps on Y/Z	Better for ultra-low-loss, space-constrained, single-supply 5 V designs where overvoltage protection is externally managed	Choose TS5A23157DCUR for <1 Ω R_ON needs at 5 V; retain 74HC4066PW/AUJ for 2–10 V operation, robust clamping, and quad-channel density

Compared with 74HCT4066PW and TS5A23157DCUR, the 74HC4066PW/AUJ uniquely balances wide supply range (2–10 V), integrated input clamping, and industry-standard TSSOP14 footprint-making it optimal for mixed-voltage industrial and test systems requiring field-serviceable reliability.

Availability

74HC4066PW/AUJ is available at Aetrix Electronics and suitable for automated test equipment multiplexing, sensor signal conditioning, and audio path switching requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74HC4066PW/AUJ 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

Nexperia is a global semiconductor expert focused on essential efficiency technologies, delivering high-performance logic, analog, and discrete components with rigorous automotive and industrial qualification.

The 74HC4066PW/AUJ belongs to Nexperia's HC-series logic portfolio, engineered for robust analog signal switching in harsh environments where supply voltage flexibility, ESD resilience, and channel matching are critical.

FAQ

What is the maximum allowable voltage on the Y or Z pins of the 74HC4066PW/AUJ relative to GND?

The 74HC4066PW/AUJ allows Y/Z pin voltages from GND to V_CC under normal operation. With external current-limiting resistors, it tolerates voltages up to V_CC + 0.5 V due to internal clamp diodes-verified per JEDEC JS-001 HBM >2000 V and JS-002 CDM >1000 V specifications. Exceeding this risks permanent damage.

Can the 74HC4066PW/AUJ be used to switch negative analog signals?

No. The 74HC4066PW/AUJ requires all Y/Z pin voltages to remain within GND to V_CC; negative voltages forward-bias internal protection diodes and may cause latch-up or excessive current. For bipolar signal switching, consider rail-to-rail analog switches like the MAX4617 or ADG1419.

Does the 74HC4066PW/AUJ require external pull-down resistors on its enable (E) inputs?

No. The 74HC4066PW/AUJ enable inputs have no internal pull-downs, but their CMOS structure draws negligible leakage current (<±1.0 μA). External pull-downs are only needed if floating E pins could cause unintended switch activation in noisy environments-designers commonly use 10–100 kΩ resistors to GND for deterministic OFF-state default.

How does ON-resistance variation affect precision applications using the 74HC4066PW/AUJ?

The 74HC4066PW/AUJ exhibits R_ON variation with input voltage (e.g., 20–105 Ω across V_SW at 4.5 V), which introduces gain nonlinearity in analog paths. For precision DC or low-frequency use, operate switches near mid-rail V_SW or calibrate out error; for AC signals, keep V_SW amplitude <20% of V_CC to minimize distortion.

Is the thermal pad on the 74HC4066PW/AUJ's TSSOP14 package electrically connected?

No. The exposed thermal pad on the 74HC4066PW/AUJ (SOT402-1) is not electrically connected to any internal node. Nexperia specifies it may remain floating or be connected to V_CC-but never to GND-to avoid unintended coupling. PCB layout should follow SOT402-1 mechanical drawings for solder mask and paste stencil design.

74HC4066PW/AUJ Specifications

Product attributes: Attribute value

Manufacturer:: NXP Semiconductors

Series:: -

Packaging:: Tape & Reel (TR)

Product Status:: Active

Switch Circuit:: SPST - NO

Multiplexer/Demultiplexer Circuit:: 1:1

Number of Circuits:: 4

On-State Resistance (Max):: 95Ohm

Channel-to-Channel Matching (ΔRon):: 3Ohm

Voltage - Supply, Single (V+):: 2V ~ 10V

Voltage - Supply, Dual (V±):: -

Switch Time (Ton, Toff) (Max):: 30ns, 20ns

-3db Bandwidth:: 200MHz

Charge Injection:: -

Channel Capacitance (CS(off), CD(off)):: 3.5pF

Current - Leakage (IS(off)) (Max):: 1µA

Crosstalk:: -60dB @ 1MHz

Operating Temperature:: -40°C ~ 125°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 14-TSSOP

74HC4066PW/AUJ FAQ

1.How can I place an order for 74HC4066PW/AUJ through Aetrix?

Please submit a Request for Quotation (RFQ) for 74HC4066PW/AUJ 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 74HC4066PW/AUJ reliable?

The price and inventory of 74HC4066PW/AUJ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HC4066PW/AUJ is usually 5 days.

3.What payment methods are accepted for 74HC4066PW/AUJ?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HC4066PW/AUJ transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 74HC4066PW/AUJ?

74HC4066PW/AUJ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 74HC4066PW/AUJ 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 74HC4066PW/AUJ?

For technical support, including 74HC4066PW/AUJ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HC4066PW/AUJ requirements.

6.How does Aetrix verify that 74HC4066PW/AUJ is sourced from the original manufacturer or authorized distributors?

All 74HC4066PW/AUJ 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 74HC4066PW/AUJ meets industry standards.

7.What is the process for return or replacement of 74HC4066PW/AUJ?

All 74HC4066PW/AUJ units undergo pre-shipment inspection (PSI). If there is an issue with 74HC4066PW/AUJ, 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 74HC4066PW/AUJ part is unused and in its original packaging.

Return procedure for 74HC4066PW/AUJ:

1.Submit a request within 90 days.

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

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