CD74HC4066MTG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The CD74HC4066MTG4 is a quad bilateral analog switch from Texas Instruments with four independent SPST channels and a 70-ohm typical on-resistance in a 14-pin SOIC package. It delivers 72 dB typical off-state isolation and operates from 2 V to 10 V supply for mixed-signal multiplexing. This high-speed CMOS device suits audio routing, analog signal multiplexing, and data bus switching applications.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 14
- Lifecycle
- OBSOLETE
- Datasheet
- CD74HC4066MTG4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -55.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Four independent SPST bilateral switches with 70 Ω typical on-resistance for low-loss analog signal routing across 2 V to 10 V supplies
- 72 dB typical off-state isolation minimizes signal crosstalk in audio mixing and RF analog multiplexer designs
- High-speed CMOS logic-compatible control inputs allow direct interfacing with 3.3 V or 5 V MCU GPIO pins without level shifters
Applications
The CD74HC4066MTG4 is used in audio mixers, test and measurement signal routers, and analog multiplexer circuits where four independent bidirectional signal paths must be switched under digital control. It fits mixed-signal PCB designs in industrial sensor hubs and programmable gain amplifier stages where its 70-ohm on-resistance and 72 dB isolation maintain signal fidelity. The device also applies to sample-and-hold circuits and communication bus switching where CMOS-compatible control and wide 2 V to 10 V supply range simplify multi-voltage system integration.
Specifications
| Pbfree Code | Yes |
| Reach Compliance Code | Unknown |
| YTEOL | 0 |
| Analog IC - Other Type | SPST |
| JESD-30 Code | R-PDSO-G14 |
| JESD-609 Code | e4 |
| Normal Position | NO |
| Number of Channels | 1 |
| Number of Functions | 4 |
| Off-state Isolation-Nom | 72dB |
| On-state Resistance Match-Nom | 1Ω |
| On-state Resistance-Max (Ron) | 95Ω |
| Output | SEPARATE OUTPUT |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP14,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 10V |
| Supply Voltage-Min (Vsup) | 2V |
| Supply Voltage-Nom (Vsup) | 4.5V |
| Surface Mount | YES |
| Switch-off Time-Max | 45ns |
| Switch-on Time-Max | 30ns |
| Switching | MAKE-BEFORE-BREAK |
| Technology | CMOS |
| Temperature Grade | MILITARY |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| HTS Code | 8542.39.00.60 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for CD74HC4066MTG4:
Frequently Asked Questions
How does the 72 dB off-state isolation of the CD74HC4066MTG4 affect audio multiplexer performance?
The 72 dB typical off-state isolation means that a 1 V audio signal on an inactive channel leaks only about 0.25 mV into the selected signal path, which is well below the noise floor of most 16-bit audio converters operating at 48 kHz. This makes the CD74HC4066MTG4 suitable for mixing consoles and DAW interfaces requiring channel separation better than 60 dB.
What is the on-resistance of the CD74HC4066MTG4 and how does it affect signal attenuation?
The CD74HC4066MTG4 has a typical on-resistance of 70 Ω. When driving a 10 kΩ load, the resistive voltage divider formed by the 70 Ω switch and load creates less than 0.7% signal attenuation, which is negligible for most analog routing applications. For lower-impedance loads such as 1 kΩ, the attenuation rises to about 6.5%, which must be accounted for in precision signal chains.
Over what supply voltage range does the CD74HC4066MTG4 operate and how does supply affect its analog signal range?
The CD74HC4066MTG4 operates from 2 V to 10 V supply, and the analog signal passing through the switch must stay within the 0 V to VCC window. On a 5 V supply, signals up to 5 V peak can be switched, while a 10 V supply allows analog voltages up to 10 V, supporting industrial 0–10 V sensor signal routing without external clamping.
Can the CD74HC4066MTG4 replace the CD4066B in legacy analog switch designs?
The CD74HC4066MTG4 is largely pin-compatible with the classic CD4066B in the 14-pin SOIC footprint and performs the same quad SPST bilateral switch function. The HC variant offers faster switching speeds and CMOS-compatible logic thresholds suited for 5 V or 3.3 V MCU control, compared to the CD4066B which targets 5 V to 15 V CMOS logic — making the upgrade straightforward for designs moving to 3.3 V logic controllers.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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