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

NXP Semiconductors 74HC2G66DC-Q100125

Name: 74HC2G66DC-Q100125
Brand: NXP Semiconductors
SKU: 74HC2G66DC-Q100125
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 74HC2G66DC-Q100125

Manufacturer:: NXP Semiconductors

Category:: Analog Switches, Multiplexers, Demultiplexers

Package:: 8-VFSOP (0.091", 2.30mm Width)

Datasheet:: 74HC2G66DC-Q100125.pdf

Description:: 74HC2G66DC-Q100 - SPST, 2 FUNC

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Product details

Overview

74HC2G66DC-Q100 from Nexperia is a dual SPST analog switch qualified to AEC-Q100 Grade 1 for automotive use, operating from −40 °C to +125 °C with supply voltage range 2.0 V to 10.0 V. It features typ. 41 Ω ON resistance at 4.5 V, <13 ns propagation delay, and ±1.0 μA leakage current. It routes analog or digital signals in infotainment audio paths and sensor signal conditioning circuits.

For engineers reviewing the 74HC2G66DC-Q100 datasheet, 74HC2G66DC-Q100 pinout, 74HC2G66DC-Q100 application, or 74HC2G66DC-Q100 equivalent, key selection criteria include guaranteed automotive temperature range, low ON-resistance flatness across VCC, channel-to-channel isolation >−60 dB at 1 MHz, and VSSOP8 package compatibility with high-density PCB layouts.

Technical Context

This device implements two independent CMOS transmission gates, each controlled by an active-HIGH enable (nE). Switch conduction occurs only when nE = HIGH, with bidirectional analog signal routing between Y and Z terminals. Clamp diodes on all inputs allow safe interfacing to voltages exceeding VCC when used with current-limiting resistors.

It complies with JEDEC JESD8C (2.7–3.6 V) and JESD7A (2.0–6.0 V), supports HBM ESD >2000 V and CDM >1000 V, and exhibits latch-up immunity >100 mA per JESD78 Class II Level B - confirming robust operation in noisy automotive environments.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	2.0 V to 10.0 V - supports wide-battery automotive systems including 3.3 V, 5 V, and 9 V rails without level shifting.
ON Resistance (typ.)	41 Ω at VCC = 4.5 V - ensures minimal signal attenuation and distortion in audio and sensor front-end paths.
Propagation Delay	2 ns (typ.) at VCC = 4.5 V - enables fast switching for multiplexed sensor data acquisition and real-time control loops.
OFF-State Isolation	−60 dB at 1 MHz - prevents crosstalk between adjacent channels in multi-signal automotive modules.
Operating Temperature	−40 °C to +125 °C - meets full under-hood and cabin ambient requirements per AEC-Q100 Grade 1.
ESD Robustness	HBM >2000 V, CDM >1000 V - withstands handling and system-level transients in production and field environments.
Leakage Current	±1.0 μA max (−40 °C to +125 °C) - preserves accuracy in high-impedance sensor interfaces and battery-powered subsystems.

Pinout & Package

VSSOP8 package (SOT765-1): plastic very thin shrink small outline, 8 leads, body width 2.3 mm, lead pitch 0.5 mm, pin 1 indicator at lower-left corner below marking code "H66".

Pin/Terminal	Circuit Role	Design Meaning
1Y, 5Y	Switch terminal A (channel 1 & 2)	Bidirectional analog/digital I/O; connects to source or load depending on system topology.
2Z, 6Z	Switch terminal B (channel 1 & 2)	Paired with corresponding Y pin; forms complete SPST path when enabled.
7, 3	nE (enable input)	Active-HIGH logic control - HIGH enables conduction, LOW forces high-impedance OFF state.
4	GND	Analog and digital ground reference; must be low-impedance connection to minimize noise coupling.
8	VCC	Positive supply rail; powers internal logic and switch elements; decoupling capacitor required near pin.

Key Features

Feature	Design Value
AEC-Q100 Grade 1 qualification	Validated for automotive use across −40 °C to +125 °C ambient, enabling deployment in engine control, ADAS, and body electronics.
Input clamp diodes	Allow safe interface to signals up to VCC + 0.5 V using external current-limiting resistors - eliminates need for external protection in many sensor applications.
Low ON-resistance mismatch	ΔRON ≤ 5 Ω (typ.) between channels at 4.5 V - ensures matched gain/attenuation in differential or dual-path signal routing.
High OFF-state isolation	−60 dB at 1 MHz between switches - critical for preventing interference in multi-channel audio switching and sensor multiplexing.
CMOS low-power operation	ICC ≤ 20 μA (max) at 5.5 V - reduces quiescent current in always-on vehicle subsystems such as telematics wake-up circuits.

Applications

Infotainment Audio Routing	Automotive Sensor Multiplexing
Use Scenario: Selecting between multiple microphone inputs or speaker outputs in head unit or amplifier modules. IC Role / Device Role / Timing Role: Dual SPST analog switch providing bidirectional, low-distortion signal path selection under microcontroller GPIO control. Use Value: 0.04 % THD at 4.5 V/4 V_PP and −60 dB crosstalk ensure clean audio without audible artifacts or channel bleed.	Use Scenario: Time-division multiplexing of analog outputs from multiple temperature, pressure, or position sensors onto shared ADC input. IC Role / Device Role / Timing Role: Precision analog switch enabling sequential sampling with <2 ns propagation delay and matched ON resistance. Use Value: ΔRON ≤ 5 Ω and 41 Ω typical R_ON minimize gain error and channel-to-channel measurement offset in sensor fusion algorithms.
Body Control Module Signal Conditioning	ADAS Camera Interface Protection
Use Scenario: Isolating legacy analog sensor signals (e.g., door lock status, seat occupancy) during ECU firmware updates or diagnostics. IC Role / Device Role / Timing Role: Fail-safe analog gate that disconnects sensitive circuitry when enable signal is deasserted. Use Value: −60 dB isolation and <1.0 μA leakage preserve signal integrity and prevent false triggers during sleep or diagnostic modes.	Use Scenario: Protecting high-speed camera video lines (e.g., LVDS or analog CVBS) from ESD events during connector mating/unmating. IC Role / Device Role / Timing Role: Low-capacitance (8 pF CS(ON)) analog switch placed upstream of receiver IC to shunt transients via clamped inputs. Use Value: HBM >2000 V and integrated clamp diodes eliminate need for discrete TVS, reducing BOM count and board area in compact camera modules.

Infotainment Audio Routing

Automotive Sensor Multiplexing

Use Scenario: Selecting between multiple microphone inputs or speaker outputs in head unit or amplifier modules.

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

Use Value: 0.04 % THD at 4.5 V/4 V_PP and −60 dB crosstalk ensure clean audio without audible artifacts or channel bleed.

Use Scenario: Time-division multiplexing of analog outputs from multiple temperature, pressure, or position sensors onto shared ADC input.

IC Role / Device Role / Timing Role: Precision analog switch enabling sequential sampling with <2 ns propagation delay and matched ON resistance.

Use Value: ΔRON ≤ 5 Ω and 41 Ω typical R_ON minimize gain error and channel-to-channel measurement offset in sensor fusion algorithms.

Body Control Module Signal Conditioning

ADAS Camera Interface Protection

Use Scenario: Isolating legacy analog sensor signals (e.g., door lock status, seat occupancy) during ECU firmware updates or diagnostics.

IC Role / Device Role / Timing Role: Fail-safe analog gate that disconnects sensitive circuitry when enable signal is deasserted.

Use Value: −60 dB isolation and <1.0 μA leakage preserve signal integrity and prevent false triggers during sleep or diagnostic modes.

Use Scenario: Protecting high-speed camera video lines (e.g., LVDS or analog CVBS) from ESD events during connector mating/unmating.

IC Role / Device Role / Timing Role: Low-capacitance (8 pF CS(ON)) analog switch placed upstream of receiver IC to shunt transients via clamped inputs.

Use Value: HBM >2000 V and integrated clamp diodes eliminate need for discrete TVS, reducing BOM count and board area in compact camera modules.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
74HCT2G66DC-Q100	TTL-compatible inputs (VIH = 2.0 V min); identical R_ON, timing, and package.	Required when driving from 5 V microcontrollers with standard TTL logic thresholds.	Select when interfacing with legacy 5 V logic families; otherwise 74HC2G66DC-Q100 offers wider VCC flexibility.
TS5A23157DCURQ1	Lower R_ON (0.9 Ω typ. at 4.5 V), higher supply limit (5.5 V), same VSSOP8 footprint.	Better suited for ultra-low-loss audio or precision instrumentation where sub-1 Ω R_ON is critical.	Choose when R_ON < 2 Ω is mandatory; note reduced VCC range excludes 9 V battery operation.

Compared with 74HCT2G66DC-Q100, the 74HC2G66DC-Q100 provides broader supply flexibility (2–10 V vs. 4.5–5.5 V) but requires CMOS-level inputs; versus TS5A23157DCURQ1, it trades lower R_ON for higher VCC tolerance and AEC-Q100 Grade 1 assurance across full temperature range.

Availability

74HC2G66DC-Q100 is available at Aetrix Electronics and suitable for automotive infotainment systems, body control modules, and ADAS sensor interfaces requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74HC2G66DC-Q100 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 leading semiconductor manufacturer specializing in high-performance, high-reliability logic, analog, and discrete components for automotive, industrial, and consumer markets.

The 74HC2G66-Q100 product line delivers AEC-Q100-qualified analog switches optimized for signal routing in harsh automotive environments, emphasizing low distortion, high isolation, and robust ESD performance.

FAQ

What is the maximum supply voltage rating for the 74HC2G66DC-Q100?

The absolute maximum supply voltage (VCC) for the 74HC2G66DC-Q100 is +11.0 V, though recommended operation is limited to 2.0 V to 10.0 V per datasheet Section 9. Exceeding 10.0 V continuously may impact reliability or parametric performance. The 74HC2G66DC-Q100 must not be operated above 11.0 V under any condition to avoid permanent damage.

Does the 74HC2G66DC-Q100 support bidirectional analog signal routing?

Yes, the 74HC2G66DC-Q100 supports fully bidirectional analog signal routing between its Y and Z terminals on both channels. Each switch operates symmetrically with no intrinsic directionality - signal flow from Y to Z or Z to Y is electrically identical, with matching ON resistance and capacitance characteristics. This behavior is confirmed in Figures 2 and 5 of the 74HC2G66DC-Q100 datasheet.

What is the typical ON resistance of the 74HC2G66DC-Q100 at 9.0 V supply?

The typical ON resistance (RON(peak)) of the 74HC2G66DC-Q100 is 21 Ω at VCC = 9.0 V and ISW = 1.0 mA, as specified in Table 8 of the datasheet. This value applies when the switch input voltage is between GND and VCC. At VI = GND or VI = VCC, RON drops further to 18 Ω or 19 Ω respectively - all values measured at Tamb = 25 °C.

How does the 74HC2G66DC-Q100 handle input voltages exceeding VCC?

The 74HC2G66DC-Q100 includes integrated input clamp diodes on all pins (nY, nZ, nE), enabling safe operation with input voltages up to VCC + 0.5 V when used with external current-limiting resistors. This capability is explicitly documented in Section 1 and Table 5, allowing direct interface to overvoltage sources like certain sensor outputs without additional protection circuitry.

Is the 74HC2G66DC-Q100 pin-compatible with the 74HCT2G66DC-Q100?

Yes, the 74HC2G66DC-Q100 is pin-compatible with the 74HCT2G66DC-Q100 - both use identical VSSOP8 (SOT765-1) packaging and share identical pin numbering, function mapping, and physical layout per Section 6.1 and Figure aaa-038070. The only functional difference lies in input threshold compatibility: 74HC2G66DC-Q100 uses CMOS thresholds, while 74HCT2G66DC-Q100 uses TTL-compatible thresholds.

74HC2G66DC-Q100125 Specifications

Product attributes: Attribute value

Manufacturer:: NXP Semiconductors

Series:: 74HC

Packaging:: Bulk

Product Status:: Active

Switch Circuit:: SPST - NO

Multiplexer/Demultiplexer Circuit:: 1:1

Number of Circuits:: 2

On-State Resistance (Max):: 70Ohm

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

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

Voltage - Supply, Dual (V±):: -

Switch Time (Ton, Toff) (Max):: 20ns, 27ns

-3db Bandwidth:: 200MHz

Charge Injection:: -

Channel Capacitance (CS(off), CD(off)):: -

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

Crosstalk:: -60dB @ 1MHz

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

Grade:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount

Supplier Device Package:: 8-VSSOP

74HC2G66DC-Q100125 FAQ

1.How can I place an order for 74HC2G66DC-Q100125 through Aetrix?

Please submit a Request for Quotation (RFQ) for 74HC2G66DC-Q100125 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 74HC2G66DC-Q100125 reliable?

The price and inventory of 74HC2G66DC-Q100125 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HC2G66DC-Q100125 is usually 5 days.

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74HC2G66DC-Q100125 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 74HC2G66DC-Q100125 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 74HC2G66DC-Q100125?

For technical support, including 74HC2G66DC-Q100125 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HC2G66DC-Q100125 requirements.

6.How does Aetrix verify that 74HC2G66DC-Q100125 is sourced from the original manufacturer or authorized distributors?

All 74HC2G66DC-Q100125 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 74HC2G66DC-Q100125 meets industry standards.

7.What is the process for return or replacement of 74HC2G66DC-Q100125?

All 74HC2G66DC-Q100125 units undergo pre-shipment inspection (PSI). If there is an issue with 74HC2G66DC-Q100125, 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 74HC2G66DC-Q100125 part is unused and in its original packaging.

Return procedure for 74HC2G66DC-Q100125:

1.Submit a request within 90 days.

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

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