SN74LVC2G66DCU Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
SN74LVC2G66DCU is a dual-channel SPST analog switch from Texas Instruments supporting 3 V and 5 V supply operation in an 8-pin VSSOP package. It provides low on-resistance signal switching with LVC-level logic control inputs, operating across -40°C to 125°C for use in portable devices, data acquisition, and general-purpose signal routing.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- SN74LVC2G66DCU Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of SN74LVC2G66DCU?
- Dual-channel SPST analog switch with independent channel control
- Wide supply voltage range: 1.65 V to 5.5 V supporting 3.3 V and 5 V systems
- Low on-resistance for minimal signal distortion during switching
- LVC logic-compatible control inputs enabling direct GPIO drive
- 8-pin VSSOP package offering compact footprint for space-constrained designs
- Operating temperature range of -40°C to 125°C for industrial applications
What is SN74LVC2G66DCU used for?
SN74LVC2G66DCU is used in portable consumer devices and handheld instruments to route analog signals such as audio, sensor outputs, or reference voltages between different circuit blocks. It suits data acquisition front ends where 2 analog signal paths must be selectively connected to an ADC input without adding significant resistance. The device also serves in mixed-voltage systems where 3.3 V logic controls switching of 5 V analog signal lines.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the SN74LVC2G66DCU datasheet?
SN74LVC2G66DCU Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for SN74LVC2G66DCU?
Compatible alternatives and drop-in replacements for SN74LVC2G66DCU:
Frequently Asked Questions
Over what supply voltage range does SN74LVC2G66DCU operate and can it handle both 3.3 V and 5 V systems?
SN74LVC2G66DCU operates from 1.65 V to 5.5 V supply, making it compatible with 1.8 V, 3.3 V, and 5 V system designs. Both analog signal and digital control can operate from the same supply rail, simplifying power distribution in mixed-voltage boards.
For an audio routing application, what switching characteristics does SN74LVC2G66DCU offer?
SN74LVC2G66DCU provides low on-resistance in the range of a few ohms at 5 V supply, minimizing voltage drop and signal attenuation for audio-frequency signals. The dual SPST configuration allows independent routing of left and right audio channels, and the flat on-resistance versus signal voltage characteristic reduces harmonic distortion.
How many independent switch channels does SN74LVC2G66DCU provide within its 8-pin package?
SN74LVC2G66DCU contains 2 independent SPST switch channels within the compact 8-pin VSSOP package. Each channel is controlled by a separate digital input, allowing simultaneous or independent switching of 2 analog signal paths under microcontroller GPIO control.
Is SN74LVC2G66DCU suitable for industrial temperature environments and what is the rated range?
SN74LVC2G66DCU is rated for the extended industrial temperature range of -40°C to 125°C, covering most outdoor and industrial enclosure conditions. This specification ensures consistent on-resistance and leakage performance even at elevated temperatures found in motor drives, HVAC controls, and factory automation equipment.
Compared to a reed relay, what advantage does SN74LVC2G66DCU offer in a compact PCB design?
Unlike a reed relay which typically measures 20 mm or more in length, SN74LVC2G66DCU in the 8-pin VSSOP package occupies approximately 3 mm × 3 mm of PCB area. It switches in under 100 ns, draws no DC coil current, and operates at 3.3 V logic levels directly, eliminating the driver transistor and flyback diode required by mechanical relays.
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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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