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NXP Semiconductors 74LVC2G66GD,125
- Part No.:
- 74LVC2G66GD,125
- Manufacturer:
- NXP Semiconductors
- Package:
- 8-XFDFN
- Datasheet:
-
74LVC2G66GD,125.pdf
- Description:
- NEXPERIA 74LVC2G66GD - SPST, 2 F
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
74LVC2G66GD,125 from NXP Semiconductors is a dual SPST analog switch IC with Schmitt-trigger enable inputs, operating from 1.65 V to 5.5 V supply, offering 6 Ω typical ON resistance at 5 V, ±32 mA switch current capability, and –40 °C to +125 °C temperature range. It enables bidirectional signal routing in low-voltage mixed-signal systems such as sensor multiplexing and audio path switching.
For engineers reviewing the 74LVC2G66GD,125 datasheet, 74LVC2G66GD,125 pinout, 74LVC2G66GD,125 application, or 74LVC2G66GD,125 equivalent, key selection criteria include ON-resistance flatness across rail-to-rail input voltage, sub-1 ns propagation delay at 5 V, isolation >46 dB (OFF-state), charge injection ≤7.5 pC, and compatibility with 3.3 V TTL logic levels.
Technical Context
The 74LVC2G66GD,125 implements two independent bilateral analog switches using low-threshold CMOS transmission gates, each controlled by a dedicated active-HIGH enable input with Schmitt-trigger hysteresis for noise immunity across the full 1.65–5.5 V VCC range. Its architecture supports rail-to-rail analog signal handling without level-shifting.
Switch operation is defined by a simple function table: nE = LOW forces OFF-state (high-impedance), nE = HIGH enables conduction between nY and nZ terminals. The device exhibits symmetric ON-resistance behavior-measured as RON(rail) at VSW = GND or VCC-and maintains <1.5 Ω flatness at 5 V/32 mA, critical for precision signal integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.65 V to 5.5 V - supports direct interface with 1.8 V, 2.5 V, 3.3 V, and 5 V logic/system rails without level shifters |
| Typical ON Resistance | 6 Ω at VCC = 5 V - ensures minimal insertion loss and voltage drop for analog signals up to ±32 mA |
| Propagation Delay | 0.2 ns (typ) at VCC = 5 V - enables high-speed signal routing in timing-critical paths like ADC/DAC multiplexing |
| OFF-State Isolation | –46 dB at 1 MHz - suppresses crosstalk between inactive channels in multi-channel sensor interfaces |
| Charge Injection | 7.5 pC at VCC = 5.5 V - limits voltage glitch on sampled-hold nodes in precision data acquisition circuits |
| Enable Input Voltage Tolerance | Up to 5.5 V - allows direct connection to higher-voltage control logic without external clamping |
| Operating Temperature | –40 °C to +125 °C - qualified for under-hood automotive, industrial PLC, and extended-range embedded applications |
Pinout & Package
XSON8 package: plastic extremely thin small outline package, no leads, 8 terminals, body dimensions 3 mm × 2 mm × 0.5 mm, thermal pad not present, pin 1 index located at lower-left corner below marking code.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1Y | Switch 1 input/output | Bidirectional analog terminal for first switch; connects to 1Z when 1E = HIGH |
| 1Z | Switch 1 input/output | Bidirectional analog terminal for first switch; connects to 1Y when 1E = HIGH |
| 2E | Switch 2 enable (active HIGH) | Controls conduction of second switch; Schmitt-trigger input rejects slow/noisy control edges |
| GND | Ground reference | 0 V reference for all analog and digital signals; must be low-impedance for noise-sensitive analog paths |
| VCC | Power supply | Single supply rail powering both analog switch core and digital control logic |
| 1E | Switch 1 enable (active HIGH) | Controls conduction of first switch; identical electrical behavior to 2E |
| 2Z | Switch 2 input/output | Bidirectional analog terminal for second switch; connects to 2Y when 2E = HIGH |
| 2Y | Switch 2 input/output | Bidirectional analog terminal for second switch; connects to 2Z when 2E = HIGH |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog signal handling | Supports input voltages from GND to VCC on both Y and Z terminals - eliminates need for external biasing in AC-coupled or DC-coupled signal chains |
| Low ON-resistance flatness | ≤1.5 Ω variation across full input voltage range at 5 V - preserves amplitude accuracy in precision instrumentation front-ends |
| High OFF-state isolation | –46 dB at 1 MHz - prevents signal leakage between unselected channels in 8:1 sensor multiplexers |
| Sub-nanosecond switching | 0.2 ns propagation delay at 5 V - meets timing budgets in high-speed serial link test equipment and FPGA I/O expansion |
| ESD robustness | HBM >2000 V, MM >200 V - withstands handling and board-level ESD events without protection diodes |
Applications
| Sensor Multiplexing | Audio Signal Routing |
|---|---|
Use Scenario: Selecting among eight thermistor or RTD inputs feeding a single ADC channel in an industrial temperature controller. IC Role / Device Role / Timing Role: Dual SPST analog switch providing channel isolation and low-distortion signal pass-through during sampling windows. Use Value: 6 Ω ON resistance and <7.5 pC charge injection minimize gain error and settling time degradation in 16-bit measurement systems. | Use Scenario: Dynamically routing line-level stereo signals between multiple codecs and output amplifiers in a smart speaker platform. IC Role / Device Role / Timing Role: Bidirectional analog switch enabling mute, source select, and headphone jack detection functions. Use Value: –46 dB OFF-isolation and <0.005% THD at 3 V suppress audible crosstalk and distortion in 96 kHz playback paths. |
| Test Equipment Signal Path | Automotive Body Control Module |
Use Scenario: Switching calibration reference voltages into DMM input stages during self-test sequences. IC Role / Device Role / Timing Role: Precision analog switch ensuring metrology-grade signal integrity with minimal offset drift over temperature. Use Value: 0.2 ns propagation delay and ±32 mA current rating support fast, repeatable auto-calibration cycles without timing skew. | Use Scenario: Isolating LIN bus transceiver I/O from microcontroller pins during sleep mode to reduce quiescent current. IC Role / Device Role / Timing Role: Low-leakage analog switch disconnecting digital control lines while maintaining wake-up signal integrity. Use Value: ±5 µA max OFF-state leakage at 125 °C ensures <1 µA total sleep current contribution per switched line. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC2G66DCUR | VSSOP8 package (2.3 mm width); identical electrical specs; same 1.65–5.5 V range and 6 Ω ON resistance at 5 V | Requires PCB layout change due to different footprint and lead pitch; better thermal dissipation at high ambient temperatures | Select when board space permits larger package or thermal performance outweighs miniaturization needs |
| 74LVC1G66GW,125 | Single-channel variant in XSON6 package; shares same ON resistance, voltage range, and Schmitt-trigger enable but lacks second switch | Not suitable for dual-path applications; requires two devices to match 74LVC2G66GD,125 functionality | Select only when system requires exactly one switch channel and ultra-compact 1.25 × 1.25 mm footprint is mandatory |
Compared with SN74LVC2G66DCUR and 74LVC1G66GW,125, the 74LVC2G66GD,125 delivers dual-switch functionality in the smallest XSON8 footprint (3 × 2 mm), enabling higher channel density in space-constrained test fixtures and portable medical devices without sacrificing rail-to-rail performance or thermal reliability up to +125 °C.
Availability
74LVC2G66GD,125 is available at Aetrix Electronics and suitable for industrial sensor interfaces, audio subsystems, automated test equipment, and automotive body electronics requiring stable component supply across extended temperature ranges.
Supply support for 74LVC2G66GD,125 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
NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT applications.
The 74LVC2G66GD,125 belongs to NXP's LVC logic family, designed specifically for low-voltage, high-speed analog signal switching in mixed-signal systems where power efficiency, signal fidelity, and wide supply tolerance are critical.
FAQ
What is the maximum allowable switch voltage for the 74LVC2G66GD,125?
The 74LVC2G66GD,125 supports switch voltages from –0.5 V to VCC + 0.5 V in both ON- and OFF-states. At VCC = 5.5 V, this allows analog signals ranging from –0.5 V to +6.0 V, making it suitable for bipolar signal routing in instrumentation front-ends without external clamping diodes.
Does the 74LVC2G66GD,125 require external pull-up or pull-down resistors on its enable inputs?
No, the 74LVC2G66GD,125 does not require external pull-up or pull-down resistors on its enable inputs because both 1E and 2E feature integrated Schmitt-trigger circuitry with defined VIH/VIL thresholds across the full 1.65–5.5 V supply range. This ensures clean, noise-immune switching even with slow-rising control signals.
Can the 74LVC2G66GD,125 be used to switch differential analog signals?
The 74LVC2G66GD,125 is not designed for differential pair switching. Each switch (1Y–1Z and 2Y–2Z) operates independently as a single-ended bidirectional path. For differential signals, two matched 74LVC2G66GD,125 devices would be required-one per polarity-with careful layout to maintain skew and impedance balance.
What is the thermal resistance (RθJA) of the 74LVC2G66GD,125 in its XSON8 package?
The 74LVC2G66GD,125 in SOT996-2 (XSON8) package has a junction-to-ambient thermal resistance of 128 °C/W, based on JEDEC JESD51-7 standard conditions (single-layer 1-oz copper, 100 mm² pad). This value assumes no thermal vias or enhanced copper pours; actual performance improves with PCB-level thermal design.
Is the 74LVC2G66GD,125 pin-compatible with other members of the 74LVC2G66 family?
Yes, the 74LVC2G66GD,125 shares identical pinout with all 74LVC2G66 variants (e.g., 74LVC2G66DP, 74LVC2G66DC, 74LVC2G66GT) across SOT505-2, SOT765-1, SOT833-1, and SOT996-2 packages. Pin assignments for 1Y, 1Z, 2E, GND, VCC, 1E, 2Z, and 2Y are fully consistent, enabling drop-in replacement within the same package type.
74LVC2G66GD,125 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74LVC
- Packaging:
- Bulk
- Product Status:
- Active
- Switch Circuit:
- SPST - NO
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 2
- On-State Resistance (Max):
- 10Ohm
- Channel-to-Channel Matching (ΔRon):
- -
- Voltage - Supply, Single (V+):
- 1.65V ~ 5.5V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 3.9ns, 5ns
- -3db Bandwidth:
- 500MHz
- Charge Injection:
- 7.5pC
- Channel Capacitance (CS(off), CD(off)):
- 5pF
- Current - Leakage (IS(off)) (Max):
- -
- Crosstalk:
- -56dB @ 1MHz
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-XSON (2x3)
74LVC2G66GD,125 FAQ
1.How can I place an order for 74LVC2G66GD,125 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVC2G66GD,125 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 74LVC2G66GD,125 reliable?
The price and inventory of 74LVC2G66GD,125 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVC2G66GD,125 is usually 5 days.
3.What payment methods are accepted for 74LVC2G66GD,125?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVC2G66GD,125 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVC2G66GD,125?
74LVC2G66GD,125 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVC2G66GD,125 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 74LVC2G66GD,125?
For technical support, including 74LVC2G66GD,125 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVC2G66GD,125 requirements.
6.How does Aetrix verify that 74LVC2G66GD,125 is sourced from the original manufacturer or authorized distributors?
All 74LVC2G66GD,125 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 74LVC2G66GD,125 meets industry standards.
7.What is the process for return or replacement of 74LVC2G66GD,125?
All 74LVC2G66GD,125 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVC2G66GD,125, 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 74LVC2G66GD,125 part is unused and in its original packaging.
Return procedure for 74LVC2G66GD,125:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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