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NXP Semiconductors 74HCT4066D,112
- Part No.:
- 74HCT4066D,112
- Manufacturer:
- NXP Semiconductors
- Package:
- -
- Datasheet:
-
74HCT4066D,112.pdf
- Description:
- NEXPERIA 74HCT4066D - SPST, 4 FU
- Quantity:
- Payment:
- Shipping:
Inventory:9,709
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Product details
Overview
74HCT4066D,112 from Nexperia is a quad SPST analog switch IC with TTL-compatible enable inputs, 45 Ω typical ON resistance at 5 V, ±25 mA switch current rating, and operation from -40 °C to +125 °C. It routes bidirectional analog or digital signals in test equipment multiplexers, audio signal switching, and microcontroller peripheral selection circuits.
For engineers reviewing the 74HCT4066D,112 datasheet, 74HCT4066D,112 pinout, 74HCT4066D,112 application, or 74HCT4066D,112 equivalent, key selection criteria include its 5 V TTL-level logic compatibility, low 8 ns typical turn-on time, 0.04% THD at 1 kHz, -50 dB OFF-state isolation, and SO14 package thermal performance up to 125 °C ambient.
Technical Context
The 74HCT4066D,112 implements four independent bilateral analog switches, each controlled by an active-HIGH TTL-compatible enable input (1E–4E). Each switch features symmetrical Y/Z terminals with clamp diodes enabling overvoltage-tolerant interfacing via current-limiting resistors.
Its CMOS-based transmission gate architecture delivers rail-to-rail analog signal handling within GND–VCC, with static ON resistance varying predictably across input voltage (e.g., 35 Ω peak at VCC = 9 V, 42 Ω at VCC = 6 V), and dynamic performance validated per JEDEC JESD7A with HBM >2000 V ESD protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switch Type | Quad SPST analog switch - enables independent routing of four bidirectional signal paths |
| ON Resistance (Typ) | 45 Ω at VCC = 4.5 V - ensures minimal insertion loss for audio and sensor signals |
| Supply Voltage Range | 4.5 V to 5.5 V - matches standard 5 V TTL logic systems without level translation |
| Turn-On Time (Typ) | 12 ns at VCC = 4.5 V - supports fast-switching applications like data acquisition sampling control |
| THD @ 1 kHz | 0.04 % at VCC = 4.5 V - preserves fidelity in low-distortion audio path switching |
| OFF-State Isolation | -50 dB at 1 MHz - prevents crosstalk between inactive channels in multiplexed sensor arrays |
| ESD Protection | HBM >2000 V, CDM >1000 V - withstands handling and board-level electrostatic events |
Pinout & Package
74HCT4066D,112 uses the SO14 (SOT108-1) plastic small outline package: 14-pin, 3.9 mm body width, 1.27 mm lead pitch, surface-mount compatible with standard reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1Y, 2Y, 3Y, 4Y | Switch terminal A | Bidirectional analog/digital I/O; interchangeable with Z pins for flexible routing |
| 1Z, 2Z, 3Z, 4Z | Switch terminal B | Paired with corresponding Y pin; forms closed path when enabled |
| 1E, 2E, 3E, 4E | Enable input (active HIGH) | TTL-compatible logic control; LOW disables switch, HIGH enables conduction |
| VCC | Positive supply | 5 V nominal supply; powers internal logic and switch bias circuitry |
| GND | Ground reference | 0 V return for all logic and analog paths; must be low-impedance |
Key Features
| Feature | Design Value |
|---|---|
| TTL-compatible enable inputs | VIH = 2.0 V min, VIL = 0.8 V max at VCC = 5 V - eliminates need for level shifters in 5 V MCU systems |
| Low ON resistance mismatch | ΔRON ≤ 3 Ω peak - ensures matched gain/attenuation across channels in precision multiplexing |
| Clamp diode protection | Enables safe interface to signals exceeding VCC using external current-limiting resistors |
| Wide temperature range | Specified from -40 °C to +125 °C - suitable for automotive under-hood and industrial control environments |
| Low dynamic power dissipation | CPD = 12 pF per switch - reduces switching-induced supply noise in mixed-signal PCBs |
Applications
| Test Equipment Multiplexer | Audio Signal Routing |
|---|---|
Use Scenario: Channel selection in automated test equipment scanning multiple DUTs. IC Role / Device Role / Timing Role: Quad analog switch routing sensor outputs or stimulus signals to shared ADC/DAC resources. Use Value: 45 Ω ON resistance and <12 ns turn-on time ensure minimal measurement delay and signal degradation across 16+ channel scans. |
Use Scenario: Selecting between microphone inputs or speaker outputs in portable audio devices. IC Role / Device Role / Timing Role: Bidirectional analog path selector controlled by baseband processor GPIOs. Use Value: 0.04 % THD at 1 kHz and -60 dB crosstalk preserve audio clarity during real-time source switching. |
| Microcontroller Peripheral Expansion | Sensor Interface Multiplexing |
Use Scenario: Sharing limited UART/SPI pins among multiple peripherals via software-controlled routing. IC Role / Device Role / Timing Role: Digital signal switch enabling one MCU interface to serve multiple sensors or displays. Use Value: TTL-level enables direct connection to 5 V MCU I/O; 25 mA per switch supports LED driver or logic-level translation loads. |
Use Scenario: Scanning thermistor, RTD, or pressure sensor bridges in HVAC or industrial monitoring systems. IC Role / Device Role / Timing Role: Precision analog multiplexer feeding single high-resolution ADC input. Use Value: Matched ΔRON ≤ 3 Ω and -50 dB OFF isolation prevent channel-to-channel gain error and leakage-induced offset drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74HC4066D,112 | CMOS-level enable inputs (VIH = 3.15 V min); wider 2–10 V VCC range | Better suited for mixed-voltage systems (e.g., 3.3 V logic controlling 9 V analog rails) | Select when interfacing with CMOS logic or requiring extended supply flexibility |
| TS5A23157DCUR | Lower 0.9 Ω ON resistance at 3.3 V; 1.65–5.5 V supply; smaller 8-pin VSSOP package | Optimized for low-voltage portable designs; lacks quad configuration (dual only) | Select for ultra-low RON in space-constrained 3.3 V applications; requires two devices for quad function |
Compared with 74HC4066D,112 and TS5A23157DCUR, the 74HCT4066D,112 provides deterministic TTL-level compatibility in legacy 5 V systems while maintaining robust 125 °C operation and SO14 manufacturability - critical for industrial control where logic family alignment and thermal reliability outweigh ultra-low RON needs.
Availability
74HCT4066D,112 is available at Aetrix Electronics and suitable for test equipment multiplexing, audio signal routing, and microcontroller peripheral expansion requiring stable component supply across industrial temperature grades.
Supply support for 74HCT4066D,112 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 delivering high-performance logic, analog, and MOSFET solutions optimized for efficiency, reliability, and manufacturability in high-volume applications.
The 74HCT4066D,112 belongs to Nexperia's industry-standard 74-series logic portfolio, engineered for robust analog switching in mixed-signal systems where TTL compatibility, thermal resilience, and long-term supply stability are essential.
FAQ
What is the maximum allowable switch voltage for 74HCT4066D,112?
The 74HCT4066D,112 supports switch voltages from GND to VCC only. With VCC rated 4.5 V to 5.5 V, the absolute maximum analog signal swing is 0 V to 5.5 V. Exceeding VCC risks latch-up or damage unless external clamping resistors and diodes are used per the datasheet's input protection guidance.
Can 74HCT4066D,112 operate with a 3.3 V supply?
No - the 74HCT4066D,112 is specified only for 4.5 V to 5.5 V supply operation. At 3.3 V, VIH and VIL thresholds fall outside guaranteed logic levels, risking unreliable enable control. For 3.3 V systems, use the 74LVC4066 or similar 3.3 V–compatible analog switch instead of 74HCT4066D,112.
Does 74HCT4066D,112 support bidirectional signal flow?
Yes - each of the four switches in the 74HCT4066D,112 is fully bidirectional: signals pass equally well from Y to Z or Z to Y when the corresponding enable (nE) is HIGH. This enables flexible routing in both analog sensor interfaces and digital bus-sharing applications using the same 74HCT4066D,112 device.
What is the thermal derating behavior of 74HCT4066D,112 in SO14 package?
In the SO14 (SOT108-1) package, the 74HCT4066D,112 total power dissipation derates linearly at 10.1 mW/K above +100 °C ambient. At +125 °C, maximum allowed Ptot drops to ~475 mW from the 500 mW rating at +100 °C - a critical constraint for high-density PCB layouts where 74HCT4066D,112 operates near thermal limits.
How does the 74HCT4066D,112 handle overvoltage on Y/Z pins?
The 74HCT4066D,112 integrates input clamp diodes on all Y/Z terminals. When voltages exceed VCC or drop below GND, current flows through these diodes - but only if external series resistors limit current to ≤±20 mA (per limiting values table). Without such resistors, overvoltage risks permanent damage to the 74HCT4066D,112.
74HCT4066D,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- *
- Packaging:
- Bulk
- Product Status:
- Active
- Switch Circuit:
- -
- Multiplexer/Demultiplexer Circuit:
- -
- Number of Circuits:
- -
- On-State Resistance (Max):
- -
- Channel-to-Channel Matching (ΔRon):
- -
- Voltage - Supply, Single (V+):
- -
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- -
- -3db Bandwidth:
- -
- Charge Injection:
- -
- Channel Capacitance (CS(off), CD(off)):
- -
- Current - Leakage (IS(off)) (Max):
- -
- Crosstalk:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
74HCT4066D,112 FAQ
1.How can I place an order for 74HCT4066D,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HCT4066D,112 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 74HCT4066D,112 reliable?
The price and inventory of 74HCT4066D,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HCT4066D,112 is usually 5 days.
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Once your 74HCT4066D,112 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 74HCT4066D,112?
For technical support, including 74HCT4066D,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HCT4066D,112 requirements.
6.How does Aetrix verify that 74HCT4066D,112 is sourced from the original manufacturer or authorized distributors?
All 74HCT4066D,112 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 74HCT4066D,112 meets industry standards.
7.What is the process for return or replacement of 74HCT4066D,112?
All 74HCT4066D,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74HCT4066D,112, 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 74HCT4066D,112 part is unused and in its original packaging.
Return procedure for 74HCT4066D,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74HCT4066D,112 Tags
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SN74LV4052APWR
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74HC4051D,653
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