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NXP Semiconductors NX3L2T66GM,125
- Part No.:
- NX3L2T66GM,125
- Manufacturer:
- NXP Semiconductors
- Package:
- 8-XFQFN Exposed Pad
- Datasheet:
-
NX3L2T66GM,125.pdf
- Description:
- IC SW SPST-NOX2 750MOHM 8XQFNU
- Quantity:
- Payment:
- Shipping:
Inventory:1,073
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Product details
Overview
NX3L2T66GM,125 from NXP Semiconductors is a dual low-ohmic SPST analog switch in XQFN8 (SOT902-2) package, operating from 1.4 V to 4.3 V supply. Each channel features independent Y/Z bidirectional signal paths and active-HIGH enable (nE), with 0.5 Ω typical ON resistance at 4.3 V and ±350 mA continuous current handling - enabling high-fidelity audio routing in portable media players.
For engineers reviewing the NX3L2T66GM,125 datasheet, NX3L2T66GM,125 pinout, NX3L2T66GM,125 application, or NX3L2T66GM,125 equivalent, key selection criteria include its 1.8 V logic-compatible enable input, sub-0.13 Ω ON-resistance flatness, Schmitt-triggered nE for slow-edge tolerance, and -40 °C to +125 °C industrial temperature rating.
Technical Context
The NX3L2T66GM,125 implements two independent CMOS transmission gates with Schmitt-trigger action on both enable inputs (1E, 2E), allowing robust switching even with slow-rising control signals. Its bidirectional architecture supports signal transmission from Y to Z or Z to Y up to VCC amplitude without polarity restriction.
Each switch exhibits ultra-low charge injection (≤6 pC at 4.3 V) and high OFF-state isolation (−90 dB at 100 kHz), while maintaining <30 ns enable/disable times across 1.4–4.3 V supply range - critical for low-distortion audio and precision sensor multiplexing in space-constrained designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.4 V to 4.3 V - enables direct interface with 1.8 V, 2.5 V, 3.3 V, and 4.3 V systems without level shifters. |
| ON Resistance (typ) | 0.50 Ω at VCC = 4.3 V - ensures minimal voltage drop and signal attenuation for analog audio or sensor signals. |
| ON Resistance Flatness | 0.13 Ω max - guarantees consistent signal integrity across full input voltage swing (0 V to VCC). |
| Enable Input Threshold | VIH = 1.4 V min at VCC = 4.3 V; VIL = 0.6 V max - allows reliable 1.8 V logic control even at full 4.3 V supply. |
| Switch Current Rating | ±350 mA continuous - supports high-drive applications like headphone switching or battery path control. |
| Operating Temperature | −40 °C to +125 °C - qualified for extended industrial and automotive-adjacent environments. |
| ESD Robustness | IEC61000-4-2 contact discharge ≥4000 V on switch ports - reduces need for external protection in handheld interfaces. |
Pinout & Package
XQFN8 package (SOT902-2): plastic extremely thin quad flat no-lead package, 1.6 mm × 1.6 mm × 0.5 mm body, 8 terminals, thermal pad exposed on bottom.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | 1Z | Channel 1 bidirectional analog signal terminal - connects to source/sink of audio line or sensor output. |
| 2 | 2Z | Channel 2 bidirectional analog signal terminal - electrically isolated from Channel 1; supports independent routing. |
| 3 | 1Y | Channel 1 bidirectional analog signal terminal - paired with 1Z; forms fully symmetric SPST switch path. |
| 4 | VCC | Positive supply rail - powers internal CMOS switches and logic; must be decoupled locally with 100 nF ceramic capacitor. |
| 5 | 2E | Channel 2 enable input (active HIGH) - Schmitt-triggered; accepts 1.8 V logic directly at 4.3 V VCC. |
| 6 | 1E | Channel 1 enable input (active HIGH) - identical electrical behavior to 2E; enables independent channel control. |
| 7 | GND | Ground reference - shared return for supply, logic, and analog paths; requires low-impedance connection to PCB ground plane. |
| 8 | 2Y | Channel 2 bidirectional analog signal terminal - paired with 2Z; completes second independent SPST switch. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent SPST switches | Enables simultaneous but isolated routing of two analog signals (e.g., left/right audio channels) without crosstalk. |
| 1.8 V logic-compatible enable | Eliminates need for external level translators when controlled by low-voltage microcontrollers or baseband processors. |
| Schmitt-trigger enable inputs | Accepts slow-rising/falling digital edges (up to 200 ns/V) without false triggering - improves noise immunity in noisy PCB environments. |
| Ultra-low charge injection (≤6 pC) | Minimizes voltage glitches on sensitive nodes (e.g., ADC inputs or filter capacitors) during switching transitions. |
| High OFF-state isolation (−90 dB) | Prevents signal leakage between inactive channels - essential for multi-source audio muxing or sensor selection. |
Applications
| Smartphone Audio Routing | Portable Media Player Signal Mux |
|---|---|
Use Scenario: Switching between headset jack, speaker amplifier, and microphone input in compact smartphone PCB layouts. IC Role / Device Role / Timing Role: Dual SPST analog switch managing bidirectional audio paths with minimal distortion and zero DC offset. Use Value: 0.5 Ω ON resistance and 0.13 Ω flatness preserve audio fidelity; −90 dB isolation prevents audible crosstalk between playback and record paths. |
Use Scenario: Selecting between line-in, FM radio tuner output, and DAC output in battery-powered MP3 players. IC Role / Device Role / Timing Role: Low-power analog multiplexer enabling dynamic signal path reconfiguration under firmware control. Use Value: 1.4 V minimum supply allows operation during brown-out; 350 mA current rating supports direct drive of 32 Ω headphones. |
| Industrial Sensor Multiplexer | USB-C Alternate Mode Switching |
Use Scenario: Scanning multiple thermistor or RTD inputs into a single ADC channel in compact industrial controllers. IC Role / Device Role / Timing Role: Precision analog switch providing matched channel characteristics and low THD (<0.02 %) for measurement accuracy. Use Value: Sub-6 pC charge injection avoids ADC settling errors; ±350 mA rating accommodates bias current for 4-wire RTD sensing. |
Use Scenario: Routing USB-C CC logic lines and sideband use (SBU) signals during DisplayPort Alt Mode negotiation. IC Role / Device Role / Timing Role: Bidirectional signal switch supporting hot-plug detection and protocol handshaking without signal inversion. Use Value: 4.3 V max VCC aligns with USB-C VBUS tolerance; Schmitt-triggered enables ensure clean edge detection on noisy CC pins. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TXS0102DCUR | 2-channel level translator with auto-direction sensing; not a true analog switch - lacks bidirectional Y/Z symmetry and 0.5 Ω RON. | Designed for I²C/SMBus voltage translation, not analog signal routing; unsuitable for audio or sensor mux where signal integrity is critical. | Select only if level translation-not analog switching-is the primary requirement; verify signal bandwidth and THD constraints. |
| MAX4617EUA+ | Single SPST switch in µMAX-8; higher RON (1.5 Ω typ), narrower supply (2.7–5.5 V), no Schmitt trigger on enable. | Limited to single-channel use; requires external level shifting for 1.8 V control; less suitable for space-constrained dual-path designs. | Consider only when dual-channel integration is unnecessary and board area permits discrete single-switch implementation. |
Compared with TXS0102DCUR and MAX4617EUA+, the NX3L2T66GM,125 uniquely delivers dual-channel, bidirectional, low-RON analog switching with 1.8 V logic compatibility and Schmitt-triggered enables - making it optimal for compact, high-fidelity portable audio and sensor interface applications where channel matching and signal fidelity are design-critical.
Availability
NX3L2T66GM,125 is available at Aetrix Electronics and suitable for smartphone audio routing, portable media player signal multiplexing, industrial sensor scanning, and USB-C Alternate Mode interface applications requiring stable component supply and guaranteed long-term availability.
Supply support for NX3L2T66GM,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 consumer electronics.
The NX3L2T66GM,125 belongs to NXP's NX3L low-voltage analog switch family, engineered specifically for high-fidelity, low-power signal routing in space-constrained portable devices operating across wide supply ranges.
FAQ
What is the maximum continuous current rating for each switch in the NX3L2T66GM,125?
The NX3L2T66GM,125 supports ±350 mA continuous current per switch channel under 3.3 V supply conditions, as specified in the datasheet limiting values table. This rating applies to both forward and reverse current flow between Y and Z terminals, enabling robust headphone driver or sensor bias current routing without derating at ambient temperatures up to +125 °C.
Can the NX3L2T66GM,125 operate with a 1.8 V supply and still accept 1.8 V logic on its enable inputs?
Yes - the NX3L2T66GM,125 is fully functional at VCC = 1.8 V, and its enable inputs (1E/2E) feature Schmitt-trigger action with VIH = 0.9 V (min) and VIL = 0.4 V (max) at that supply. This ensures reliable activation using standard 1.8 V GPIOs without external level-shifting circuitry, preserving timing margins and reducing BOM count.
Does the NX3L2T66GM,125 support bidirectional analog signal transmission?
Yes - each switch in the NX3L2T66GM,125 is fully bidirectional: signals may pass from Y to Z or Z to Y with identical ON resistance, capacitance, and distortion performance. The device imposes no polarity restrictions, and the maximum signal amplitude is limited only by VCC, enabling flexible routing in audio, sensor, and data-line applications.
What is the thermal pad configuration for the XQFN8 package of the NX3L2T66GM,125?
The NX3L2T66GM,125 in SOT902-2 (XQFN8) package includes an exposed thermal pad on the underside of the die attach area. This pad must be soldered to a dedicated PCB copper pour connected to GND for optimal thermal dissipation and EMI suppression. The datasheet recommends a 1.2 mm × 1.2 mm stencil aperture and Type 3 solder paste for reliable assembly.
How does the NX3L2T66GM,125 achieve high noise immunity on its enable inputs?
The NX3L2T66GM,125 achieves high noise immunity through integrated Schmitt-trigger circuitry on both 1E and 2E inputs, providing hysteresis of approximately 0.3 V at VCC = 3.3 V. This design rejects transient noise below the hysteresis threshold and tolerates slow input edges up to 200 ns/V - eliminating false switching in electrically noisy environments such as smartphone baseband sections.
NX3L2T66GM,125 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Switch Circuit:
- SPST - NO
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 2
- On-State Resistance (Max):
- 750mOhm
- Channel-to-Channel Matching (ΔRon):
- 20mOhm
- Voltage - Supply, Single (V+):
- 1.4V ~ 4.3V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 28ns, 20ns
- -3db Bandwidth:
- 60MHz
- Charge Injection:
- 6pC
- Channel Capacitance (CS(off), CD(off)):
- 35pF
- Current - Leakage (IS(off)) (Max):
- 10nA
- Crosstalk:
- -90dB @ 100kHz
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-XQFNU (1.6x1.6)
NX3L2T66GM,125 FAQ
1.How can I place an order for NX3L2T66GM,125 through Aetrix?
Please submit a Request for Quotation (RFQ) for NX3L2T66GM,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 NX3L2T66GM,125 reliable?
The price and inventory of NX3L2T66GM,125 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NX3L2T66GM,125 is usually 5 days.
3.What payment methods are accepted for NX3L2T66GM,125?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NX3L2T66GM,125 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NX3L2T66GM,125?
NX3L2T66GM,125 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NX3L2T66GM,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 NX3L2T66GM,125?
For technical support, including NX3L2T66GM,125 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NX3L2T66GM,125 requirements.
6.How does Aetrix verify that NX3L2T66GM,125 is sourced from the original manufacturer or authorized distributors?
All NX3L2T66GM,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 NX3L2T66GM,125 meets industry standards.
7.What is the process for return or replacement of NX3L2T66GM,125?
All NX3L2T66GM,125 units undergo pre-shipment inspection (PSI). If there is an issue with NX3L2T66GM,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 NX3L2T66GM,125 part is unused and in its original packaging.
Return procedure for NX3L2T66GM,125:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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