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NXP Semiconductors NX3L2T384GD,125
- Part No.:
- NX3L2T384GD,125
- Manufacturer:
- NXP Semiconductors
- Package:
- 8-XFDFN
- Datasheet:
-
NX3L2T384GD,125.pdf
- Description:
- IC SW SPST-NCX2 750MOHM 8XSON
- Quantity:
- Payment:
- Shipping:
Inventory:2,979
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Product details
Overview
NX3L2T384GD,125 from NXP Semiconductors is a dual low-ohmic SPST analog switch with two independent 1Y/1Z and 2Y/2Z bidirectional channels, active-low enable inputs (1E, 2E), 0.5 Ω typical ON resistance at 4.3 V, ±350 mA continuous current handling, and operation from −40 °C to +125 °C. It enables 4.3 V analog signal routing under 1.8 V digital control in portable audio interfaces.
For engineers reviewing the NX3L2T384GD,125 datasheet, NX3L2T384GD,125 pinout, NX3L2T384GD,125 application, or NX3L2T384GD,125 equivalent, key selection criteria include bidirectional signal integrity up to VCC, Schmitt-triggered enable inputs for slow-edge tolerance, ultra-low charge injection (<6 pC), −90 dB OFF-state isolation, and compatibility with 1.4–4.3 V supply rails.
Technical Context
The NX3L2T384GD,125 implements a CMOS transmission-gate architecture with independent channel control, where each switch conducts bidirectionally between Y and Z terminals when its corresponding E input is LOW. Its Schmitt-triggered enable inputs accept logic levels up to VCC and tolerate slow rise/fall times (≤200 ns/V), enabling direct interfacing with low-voltage microcontrollers without level shifters.
Static performance is characterized by sub-1 Ω ON resistance across 1.4–4.3 V VCC, <0.13 Ω flatness ensuring minimal signal distortion, and <±500 nA leakage over temperature. Dynamic behavior includes 11–50 ns enable/disable times, 60 MHz −3 dB bandwidth, and <0.02% THD at 2.7 V and above - confirming suitability for high-fidelity audio switching.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ON Resistance (typ) | 0.50 Ω at VCC = 4.3 V - ensures <10 mV drop at 20 mA, preserving signal amplitude in precision analog paths |
| Supply Range | 1.4 V to 4.3 V - supports direct integration with Li-ion battery-powered systems (2.7–4.2 V) and 1.8 V logic domains |
| Switch Current | ±350 mA continuous - enables routing of headphone drivers, sensor excitation, or DAC outputs without external buffering |
| Isolation (OFF) | −90 dB at 100 kHz - prevents crosstalk between adjacent audio channels or mixed-signal signal paths |
| Charge Injection | ≤6 pC at VCC = 4.3 V - minimizes voltage glitches on high-impedance nodes (e.g., SAR ADC sample capacitors) |
| Operating Temp | −40 °C to +125 °C - qualified for extended-temperature industrial and automotive cabin applications |
| ESD Rating | ±4000 V IEC61000-4-2 contact discharge - protects switch ports against real-world handling and system-level ESD events |
Pinout & Package
Package: XSON8 (SOT996-2), plastic extremely thin small outline package, no leads, 8 terminals, body 3 × 2 × 0.5 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1Y, 5 | Channel 1 bidirectional I/O | Connects to first analog signal path (e.g., left-channel audio line); interchangeable as input or output |
| 2Y, 6 | Channel 2 bidirectional I/O | Connects to second analog signal path (e.g., right-channel audio line); fully independent of Channel 1 |
| 1Z, 2 | Channel 1 bidirectional I/O | Paired with 1Y; forms complete SPST switch path - no internal polarity or directionality |
| 2Z, 6 | Channel 2 bidirectional I/O | Paired with 2Y; electrically isolated from Channel 1; supports differential or single-ended routing |
| 1E, 7 | Channel 1 enable (active LOW) | Drives LOW to close Channel 1; Schmitt trigger allows reliable switching even with slow GPIO edges |
| 2E, 3 | Channel 2 enable (active LOW) | Independent control of Channel 2; accepts voltages up to VCC, enabling 1.8 V logic control of 3.3 V signals |
| GND, 4 | Ground reference | Common return for all analog and digital circuitry; must be low-impedance to minimize noise coupling |
| VCC, 8 | Positive supply | Defines maximum analog signal swing (up to VCC); powers both analog switch core and digital interface |
Key Features
| Feature | Design Value |
|---|---|
| 1.8 V logic-compatible control | Enables direct drive from 1.8 V microcontrollers at VCC = 3.6 V - eliminates level translators in mixed-voltage designs |
| Ultra-low ON resistance flatness | 0.13 Ω (typ) - maintains consistent gain and phase response across full analog signal range (0–VCC) |
| High OFF-state isolation | −90 dB at 100 kHz - suppresses audible crosstalk in stereo audio routing and prevents interference in sensor multiplexing |
| Low charge injection | ≤6 pC - avoids step errors in precision sampling circuits and reduces need for blanking or settling delay |
| Extended temperature operation | Rated from −40 °C to +125 °C - supports deployment in automotive infotainment, industrial HMI, and outdoor IoT devices |
Applications
| Audio Signal Routing | Sensor Multiplexing |
|---|---|
Use Scenario: Switching stereo audio signals between multiple sources (e.g., Bluetooth receiver, FM tuner, USB DAC) and headphone amplifier inputs in portable media players. IC Role / Device Role / Timing Role: Dual SPST analog switch providing independent left/right channel path selection with simultaneous enable control. Use Value: 0.5 Ω ON resistance and <0.02% THD preserve audio fidelity; −90 dB isolation prevents audible crosstalk between channels. |
Use Scenario: Selecting among multiple analog sensors (e.g., temperature, pressure, humidity) feeding a shared ADC input in compact industrial data loggers. IC Role / Device Role / Timing Role: Low-leakage bidirectional switch isolating inactive sensors to prevent loading and offset errors on the measurement node. Use Value: <±500 nA OFF-state leakage at 125 °C ensures <1 LSB error in 16-bit systems; 1.4–4.3 V supply flexibility matches sensor output ranges. |
| USB Interface Protection | Headphone Jack Detection |
Use Scenario: Isolating USB D+/D− lines during hot-plug events or ESD transients in USB-C accessory docks with integrated analog switches. IC Role / Device Role / Timing Role: High-isolation analog switch placed in series with USB data lines to block fault currents while maintaining signal integrity. Use Value: ±4000 V IEC61000-4-2 contact ESD rating protects downstream PHY; 60 MHz bandwidth preserves USB 2.0 eye diagram. |
Use Scenario: Detecting insertion/removal of 3.5 mm TRRS headphones and routing microphone/audio paths accordingly in smartphones. IC Role / Device Role / Timing Role: Bidirectional switch connecting detection resistors and bias networks to baseband processor GPIOs. Use Value: Schmitt-triggered enable inputs tolerate slow mechanical switch bounce; 1.8 V logic compatibility aligns with application processor I/O voltage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TS5A23157DCUR | Single-supply 1.65–5.5 V; 0.9 Ω typical RON at 3.3 V; no Schmitt trigger on enable; −75 dB isolation | Limited to commercial temp (−40 °C to +85 °C); lower isolation impacts stereo crosstalk performance | Preferred for cost-sensitive consumer designs where extended temperature and ultra-low crosstalk are not required |
| ADG721BRMZ-REEL | 1.8–5.5 V supply; 0.6 Ω typical RON at 3 V; 125 °C rated; but only single-channel, higher 15 pC charge injection | Requires two devices for dual-channel function; higher charge injection may affect precision sampling accuracy | Applicable where board space permits dual placement and charge injection sensitivity is relaxed |
Compared with TS5A23157DCUR and ADG721BRMZ-REEL, the NX3L2T384GD,125 delivers superior thermal robustness (+125 °C), tighter ON resistance flatness (0.13 Ω vs ≥0.3 Ω), and −90 dB isolation - making it optimal for high-integrity portable audio and industrial sensor routing where signal purity and reliability are critical.
Availability
NX3L2T384GD,125 is available at Aetrix Electronics and suitable for portable media players, industrial data loggers, and USB-C accessory docks requiring stable component supply, extended-temperature operation, and high-fidelity analog switching.
Supply support for NX3L2T384GD,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 specializing in secure connectivity solutions for automotive, industrial, and consumer applications, with leadership in analog, RF, and mixed-signal ICs.
The NX3L2T384GD,125 belongs to NXP's NX3L low-ohmic analog switch family, engineered for high-performance signal routing in battery-powered portable electronics where power efficiency, signal integrity, and small-footprint packaging are essential.
FAQ
What is the maximum analog signal voltage the NX3L2T384GD,125 can switch?
The NX3L2T384GD,125 supports analog signals from GND to VCC. With a maximum VCC of 4.3 V, it can reliably switch signals up to 4.3 V peak-to-peak without distortion or clipping. This rail-to-rail capability enables direct connection to DAC outputs, sensor bridges, and audio amplifiers operating within the same supply domain as the NX3L2T384GD,125.
Does the NX3L2T384GD,125 require external pull-up or pull-down resistors on its enable inputs?
No, the NX3L2T384GD,125 does not require external pull-up or pull-down resistors on its 1E and 2E inputs. Its enable pins feature integrated Schmitt triggers with defined VIH/VIL thresholds (e.g., VIH = 1.4 V min at VCC = 4.3 V), allowing direct connection to GPIOs. Internal design ensures stable logic states without external biasing under normal operating conditions.
Can the NX3L2T384GD,125 be used to switch differential audio signals?
Yes, the NX3L2T384GD,125 supports differential audio switching via independent channel pairing: one channel (1Y/1Z) handles the positive leg, the other (2Y/2Z) the negative leg. Its matched ON resistance (<0.1 Ω mismatch), low crosstalk (−90 dB), and identical dynamic response ensure common-mode rejection and preserve signal integrity - confirmed by <0.02% THD measurements at 2.7 V and above.
What is the thermal performance of the NX3L2T384GD,125 in the XSON8 (SOT996-2) package?
In the XSON8 (SOT996-2) package, the NX3L2T384GD,125 has a specified total power dissipation of 250 mW at ambient temperatures from −40 °C to +125 °C. Its thermal resistance (RθJA) is optimized for the 3 × 2 × 0.5 mm body, enabling operation at full rated current (±350 mA) without derating below +118 °C. Above that, Ptot derates linearly at 7.8 mW/K.
How does the NX3L2T384GD,125 handle logic signals exceeding VCC on its enable inputs?
Per the datasheet, the NX3L2T384GD,125 allows enable input voltages up to VCC + 0.5 V (absolute max), and its inputs are explicitly rated to accept voltages above VCC. This enables safe interfacing with higher-voltage controllers (e.g., 3.3 V GPIO driving a 2.7 V VCC device) without clamping diodes or external protection - a key advantage over many competing analog switches.
NX3L2T384GD,125 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Switch Circuit:
- SPST - NC
- 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):
- 40ns, 15ns
- -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-XSON, SOT996-2 (2x3)
NX3L2T384GD,125 FAQ
1.How can I place an order for NX3L2T384GD,125 through Aetrix?
Please submit a Request for Quotation (RFQ) for NX3L2T384GD,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 NX3L2T384GD,125 reliable?
The price and inventory of NX3L2T384GD,125 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NX3L2T384GD,125 is usually 5 days.
3.What payment methods are accepted for NX3L2T384GD,125?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NX3L2T384GD,125 transactions.
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4.How is shipping managed for NX3L2T384GD,125?
NX3L2T384GD,125 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NX3L2T384GD,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 NX3L2T384GD,125?
For technical support, including NX3L2T384GD,125 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NX3L2T384GD,125 requirements.
6.How does Aetrix verify that NX3L2T384GD,125 is sourced from the original manufacturer or authorized distributors?
All NX3L2T384GD,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 NX3L2T384GD,125 meets industry standards.
7.What is the process for return or replacement of NX3L2T384GD,125?
All NX3L2T384GD,125 units undergo pre-shipment inspection (PSI). If there is an issue with NX3L2T384GD,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 NX3L2T384GD,125 part is unused and in its original packaging.
Return procedure for NX3L2T384GD,125:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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