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Home > Products > Integrated Circuits (ICs) > Logic > Signal Switches, Multiplexers, Decoders

STMicroelectronics 74LVQ4066TTR

Name: 74LVQ4066TTR
Brand: STMicroelectronics
SKU: 74LVQ4066TTR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 74LVQ4066TTR

Manufacturer:: STMicroelectronics

Category:: Signal Switches, Multiplexers, Decoders

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

Datasheet:: 74LVQ4066TTR.pdf

Description:: IC BILATERAL SW 1 X 1:1 14TSSOP

Quantity:: RFQ Add To RFQ list

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Product details

Overview

74LVQ4066TTR from STMicroelectronics is a low-voltage CMOS quad bilateral analog/digital switch with four independent enable-controlled channels, 12 Ω typical ON-resistance at 5 V, 0.1 ns typical propagation delay, and 2 µA max quiescent current - deployed in precision signal routing for mixed-signal instrumentation and low-noise audio switching.

For engineers reviewing the 74LVQ4066TTR datasheet, 74LVQ4066TTR pinout, 74LVQ4066TTR application, or 74LVQ4066TTR equivalent, key selection criteria include guaranteed 2–5.5 V operation, ±60 dB feedthrough attenuation at 1 MHz, 150 MHz bandwidth (3.3 V), and TSSOP-14 package compatibility with legacy 74-series footprints.

Technical Context

The device implements four independent bilateral transmission gates, each controlled by a dedicated active-high enable input (1C–4C), supporting bidirectional analog/digital signal flow up to V_CC peak amplitude without ground bounce generation. Its sub-micron C2MOS process delivers latch-up immunity and ESD protection on all I/O pins.

Switching behavior is defined by voltage-controlled channel conduction: R_ON varies from 9.5 Ω (min, 5 V) to 32 Ω (max, 3.3 V), while distortion remains ≤0.04% THD at 1 kHz and crosstalk between switches is ≤−60 dB - enabling high-fidelity signal path isolation in multi-channel systems.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CC Range	2 V to 5.5 V - supports direct interface with 3.3 V and 5 V logic domains without level shifters
t_PD (Typ.)	0.1 ns at 5 V - enables high-speed digital multiplexing in timing-critical control paths
R_ON (Typ.)	12 Ω at 5 V, 14 Ω at 3.3 V - ensures minimal signal attenuation and channel matching in precision analog routing
Feedthrough Attenuation	−60 dB at 1 MHz - suppresses unwanted coupling between disabled channels in multi-signal environments
THD	0.04% at 1 kHz, 2.75 V_P-P - preserves waveform integrity in low-distortion audio and sensor signal conditioning
I_CC (Max)	2 µA at 25°C - enables battery-powered or always-on monitoring circuits with negligible standby drain

Pinout & Package

TSSOP-14 package: 4.9–5.1 mm width, 6.2–6.6 mm length, 0.65 mm pitch, 1.2 mm max height, lead-free and RoHS compliant.

Pin/Terminal	Circuit Role	Design Meaning
1, 4, 8, 11	I/O (Channel 1–4)	Bidirectional analog/digital signal terminal - accepts signals from 0 V to V_CC, no polarity restriction
2, 3, 9, 10	O/I (Channel 1–4)	Complementary bidirectional terminal paired with Pin 1/4/8/11 - forms full bilateral switch path
5, 6, 12, 13	1C–4C (Enable)	Active-HIGH control inputs - switch conducts only when corresponding C pin ≥0.7×V_CC
7	GND	Reference ground for all internal circuitry and signal return path
14	V_CC	Positive supply rail - powers internal logic and switch driver stages

Key Features

Feature	Design Value
Quad independent enable control	Four separate C inputs allow per-channel activation - eliminates need for external gating logic in multi-path routing
Low R_ON variation	≤2 Ω mismatch between channels - maintains amplitude and phase consistency across parallel signal paths
High OFF-state isolation	−60 dB feedthrough attenuation - prevents signal leakage into adjacent inactive channels during multiplexed acquisition
ESD-protected I/O	±20 mA diode current rating on all pins - withstands handling and board-level transients without external clamps

Applications

Audio Signal Routing

Instrumentation Multiplexer

Use Scenario: Selecting between multiple microphone inputs or line-level sources in a portable mixer or voice recorder.

IC Role / Device Role / Timing Role: Bilateral analog switch providing low-distortion, low-crosstalk signal path selection under microcontroller GPIO control.

Use Value: 0.04% THD and −60 dB inter-channel isolation preserve signal fidelity across gain-staged audio paths.

Use Scenario: Scanning thermocouple, RTD, and strain gauge inputs into a single ADC in industrial data loggers.

IC Role / Device Role / Timing Role: Precision analog multiplexer enabling sequential sensor sampling without introducing offset or gain error.

Use Value: 12 Ω R_ON and ≤2 Ω channel matching minimize measurement uncertainty in ratiometric bridge measurements.

Logic-Level Translation Interface

Test Equipment Signal Switching

Use Scenario: Isolating or routing digital control lines between 3.3 V FPGA I/O banks and 5 V peripheral interfaces.

IC Role / Device Role / Timing Role: Bidirectional level-agnostic switch enabling safe voltage-domain bridging without direction control logic.

Use Value: 0.1 ns t_PD and 2–5.5 V V_CC range support glitch-free handshaking across mixed-voltage subsystems.

Use Scenario: Reconfiguring stimulus/sense paths in automated test equipment (ATE) for IC functional validation.

IC Role / Device Role / Timing Role: High-isolation signal router enabling programmable DUT interface topologies under PC-based controller.

Use Value: −60 dB crosstalk and 150 MHz bandwidth support accurate high-frequency parametric testing up to 100 MHz.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
74LVC4066PW	Higher R_ON (30 Ω typ. @ 3.3 V), slower t_PD (1.5 ns), same TSSOP-14 footprint	Suitable for lower-speed digital routing where ON-resistance tolerance >20 Ω is acceptable	Select when cost sensitivity outweighs analog performance requirements
ADG1412BRUZ	Lower R_ON (1.3 Ω typ.), higher supply voltage (up to 36 V), SPI interface instead of parallel enables	Required for high-voltage analog switching or microcontroller SPI-bus constrained designs	Select when precision <1 Ω R_ON or wide supply range is mandatory

Compared with 74LVC4066PW and ADG1412BRUZ, the 74LVQ4066TTR uniquely balances ultra-low propagation delay (0.1 ns), sub-15 Ω R_ON, and parallel enable architecture - making it optimal for real-time mixed-signal routing where timing predictability and pin-count efficiency are critical.

Availability

74LVQ4066TTR is available at Aetrix Electronics and suitable for audio signal routing, instrumentation multiplexing, logic-level translation interface, and test equipment signal switching requiring stable component supply and long-term manufacturability.

Supply support for 74LVQ4066TTR 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, designing and manufacturing microcontrollers, power management ICs, analog switches, and sensors for industrial, automotive, and consumer markets.

The 74LVQ series targets low-voltage, low-power analog/digital interface applications - emphasizing speed, noise immunity, and compatibility with legacy 74-series logic families in space-constrained designs.

FAQ

What is the maximum signal amplitude the 74LVQ4066TTR can pass?

The device passes signals with amplitudes up to V_CC (peak) in either direction - e.g., ±2.5 V with 5 V supply or ±1.65 V with 3.3 V supply - provided input voltage stays within −0.5 V to V_CC + 0.5 V absolute limits and current remains below ±50 mA per terminal.

Does the 74LVQ4066TTR require external pull-up or pull-down resistors on enable pins?

No. The enable inputs (1C–4C) have CMOS-compatible thresholds (VIH = 0.7×V_CC, VIL = 0.3×V_CC) and internal input leakage ≤1.0 µA, allowing direct connection to microcontroller GPIOs or logic gates without biasing components.

Can the 74LVQ4066TTR be used with AC-coupled signals?

Yes - its bilateral structure supports true AC coupling. However, DC bias must be maintained within 0 V to V_CC at both I/O and O/I terminals during operation; use external bias networks if signal swing exceeds this range.

Is the 74LVQ4066TTR pin-compatible with standard 74HC4066 devices?

Yes - it is pin- and function-compatible with 74-series 4066 devices, including 74HC4066 and 74HCT4066, sharing identical TSSOP-14 pinout and truth table. However, its lower R_ON and faster t_PD may affect timing margins in legacy designs originally specified for HC-family delays.

74LVQ4066TTR Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: 74LVQ

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

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Type:: Bilateral, FET Switches

Circuit:: 1 x 1:1

Independent Circuits:: 4

Current - Output High, Low:: -

Voltage Supply Source:: Single Supply

Voltage - Supply:: 2V ~ 5.5V

Operating Temperature:: -55°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 14-TSSOP

74LVQ4066TTR FAQ

1.How can I place an order for 74LVQ4066TTR through Aetrix?

Please submit a Request for Quotation (RFQ) for 74LVQ4066TTR 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 74LVQ4066TTR reliable?

The price and inventory of 74LVQ4066TTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVQ4066TTR is usually 5 days.

3.What payment methods are accepted for 74LVQ4066TTR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVQ4066TTR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 74LVQ4066TTR?

74LVQ4066TTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 74LVQ4066TTR 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 74LVQ4066TTR?

For technical support, including 74LVQ4066TTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVQ4066TTR requirements.

6.How does Aetrix verify that 74LVQ4066TTR is sourced from the original manufacturer or authorized distributors?

All 74LVQ4066TTR 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 74LVQ4066TTR meets industry standards.

7.What is the process for return or replacement of 74LVQ4066TTR?

All 74LVQ4066TTR units undergo pre-shipment inspection (PSI). If there is an issue with 74LVQ4066TTR, 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 74LVQ4066TTR part is unused and in its original packaging.

Return procedure for 74LVQ4066TTR:

1.Submit a request within 90 days.

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

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