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NXP Semiconductors NTS0102GU8,125
- Part No.:
- NTS0102GU8,125
- Manufacturer:
- NXP Semiconductors
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
NTS0102GU8,125.pdf
- Description:
- IC TRANSLTR BIDIRECTIONAL 8XQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,393
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Product details
Overview
NTS0102GU8,125 from NXP Semiconductors is a 2-bit dual-supply auto-sensing bidirectional voltage-level translating transceiver in XQFN8 package, supporting 1.65–3.6 V on side A and 2.3–5.5 V on side B, with 50 Mbps push-pull data rate and IOFF partial power-down protection. It enables I²C/SMBus and GPIO interfacing between 1.8 V/2.5 V/3.3 V and 5.0 V domains without external direction control.
For engineers reviewing the NTS0102GU8,125 datasheet, NTS0102GU8,125 pinout, NTS0102GU8,125 application, or NTS0102GU8,125 equivalent, key selection criteria include its open-drain-compatible auto-direction sensing architecture, −40 °C to +125 °C operation, IOFF-enabled safe power-down behavior, and guaranteed 50 Mbps performance across full voltage and temperature ranges.
Technical Context
The NTS0102GU8,125 implements a switch-type voltage translation architecture using pass-gate NMOS (T3) biased at ~VTH above the lower supply rail, enabling seamless bidirectional conduction. Its edge-rate accelerator (one-shot circuit) actively boosts rising edges by temporarily enabling PMOS drivers (T1/T2), reducing tTLH to ≤9.5 ns (A port, 3.3 V) while maintaining <0.8 ns inter-channel skew.
Direction sensing is fully autonomous-no external DIR signal required-and relies on internal gate bias tracking and dynamic edge detection. The device incorporates integrated 10 kΩ pull-up resistors per I/O (to respective VCC rails), disables internal pull-ups when OE = LOW, and enforces VCC(A) ≤ VCC(B) during steady-state operation to prevent latch-up.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC(A) Range | 1.65 V to 3.6 V: supports 1.8 V and 2.5 V logic domains as low-side interface |
| VCC(B) Range | 2.3 V to 5.5 V: compatible with 3.3 V and 5.0 V systems as high-side interface |
| Max Data Rate | 50 Mbps: verified push-pull performance across full temp range (−40 °C to +125 °C) |
| IOFF Protection | Active when either VCC rail is at GND: prevents backflow current and enables safe partial power-down |
| ESD Rating (B port) | HBM Class 3B >8000 V: robust protection for 5 V I/O lines exposed to system-level ESD events |
| Operating Temp | −40 °C to +125 °C: qualified for automotive under-hood and industrial control applications |
| Propagation Delay | A→B tPHL ≤7.3 ns @ +125 °C: ensures timing margin in high-speed I²C clock stretching scenarios |
Pinout & Package
XQFN8 package (SOT1309-1): plastic extremely thin quad flat package, no leads, 8 terminals, body size 1.40 × 1.20 × 0.50 mm, wettable flank terminals for automated optical inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: VCC(A) | Low-side supply input | Reference for A1, A2, and OE inputs; must be ≤ VCC(B) during operation |
| 2: A1 | Bi-directional I/O (A side) | Referenced to VCC(A); includes internal 10 kΩ pull-up to VCC(A) |
| 3: A2 | Bi-directional I/O (A side) | Referenced to VCC(A); identical electrical behavior to A1 |
| 4: OE | Output enable (active HIGH) | Referenced to VCC(A); LOW forces all I/Os into high-impedance OFF-state |
| 5: B1 | Bi-directional I/O (B side) | Referenced to VCC(B); includes internal 10 kΩ pull-up to VCC(B) |
| 6: B2 | Bi-directional I/O (B side) | Referenced to VCC(B); identical electrical behavior to B1 |
| 7: GND | Ground reference | Common return path for both supply domains; mandatory connection for IOFF and ESD integrity |
| 8: VCC(B) | High-side supply input | Reference for B1 and B2; enables translation up to 5.5 V logic levels |
Key Features
| Feature | Design Value |
|---|---|
| Auto-direction sensing | Eliminates need for external direction-control signals or microcontroller GPIO overhead in I²C/SMBus bridges |
| Integrated pull-up resistors | 10 kΩ per I/O (to respective VCC rail) reduces external component count and PCB area in open-drain applications |
| Edge-rate acceleration | One-shot circuit cuts tTLH by up to 40% vs passive translation, enabling reliable 50 Mbps operation with standard 10 kΩ pull-ups |
| IOFF partial power-down | Prevents damaging back-current when one supply is off-critical for hot-swap and multi-rail power sequencing |
| Wide voltage compatibility | Single device supports all common level-shift combinations: 1.8↔3.3 V, 2.5↔5.0 V, 3.3↔5.0 V without redesign |
Applications
| I²C Bus Level Translation | UART Signal Bridging |
|---|---|
Use Scenario: Interfacing a 1.8 V microcontroller's I²C master to a 3.3 V sensor node in an industrial IoT gateway. IC Role / Device Role / Timing Role: Bidirectional voltage translator with auto-direction sensing, preserving I²C protocol timing including clock stretching and arbitration. Use Value: Eliminates external direction logic and discrete MOSFET translators; maintains 400 kHz standard-mode and 1 MHz fast-mode timing margins. | Use Scenario: Connecting a 2.5 V UART peripheral (e.g., GPS module) to a 5.0 V host MCU in automotive telematics hardware. IC Role / Device Role / Timing Role: Asymmetric voltage translator handling TX/RX lines independently, with guaranteed 50 Mbps capability exceeding typical UART baud rates. Use Value: Supports 3 Mbps UART (RS-232 level tolerant) without signal degradation; IOFF protects against bus contention during MCU reset sequences. |
| GPIO Expansion Interface | Hot-Swappable Module Communication |
Use Scenario: Extending GPIOs from a 3.3 V SoC to control 5.0 V actuators and status LEDs in programmable logic controllers. IC Role / Device Role / Timing Role: General-purpose bidirectional level shifter with active drive strength, enabling push-pull or open-drain signaling on either side. Use Value: Delivers <10 ns propagation delay and <0.8 ns skew-preserves timing-critical GPIO toggling for PWM or encoder feedback. | Use Scenario: Enabling hot-plug communication between a mainboard (3.3 V) and modular daughter cards (5.0 V) in telecom base station chassis. IC Role / Device Role / Timing Role: Safe isolation element with IOFF and robust ESD (8 kV HBM on B port) during insertion/removal events. Use Value: Prevents backfeed current into powered-down modules; eliminates need for mechanical interlocks or sequenced power connectors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-supply translating transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TXS0102DSGR | TI part uses different edge-acceleration architecture; max 32 Mbps rated; no IOFF circuitry | Lacks partial power-down protection; unsuitable for hot-swap or asymmetric power sequencing | Select only if IOFF is not required and 50 Mbps headroom is unnecessary |
| SN74AVC2T244RSWR | TI part requires explicit DIR control; push-pull only; no auto-sensing or open-drain support | Cannot replace NTS0102GU8,125 in I²C/SMBus without adding direction logic and pull-up management | Choose only for unidirectional or controlled-bidirectional applications where DIR signal is available |
Compared with TXS0102DSGR and SN74AVC2T244RSWR, the NTS0102GU8,125 uniquely combines auto-direction sensing, IOFF-enabled safe power-down, and 50 Mbps performance-making it the only drop-in solution for robust, protocol-transparent I²C bridging across wide voltage domains.
Availability
NTS0102GU8,125 is available at Aetrix Electronics and suitable for industrial automation, automotive infotainment, and telecom infrastructure requiring stable component supply, extended temperature operation, and certified ESD robustness.
Supply support for NTS0102GU8,125 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 markets.
The NTS0102 product line delivers high-speed, auto-sensing bidirectional level translation for open-drain protocols like I²C and SMBus-designed specifically for mixed-voltage system integration without compromising signal integrity or safety.
FAQ
What is the maximum allowable voltage difference between VCC(A) and VCC(B) for reliable operation of the NTS0102GU8,125?
The NTS0102GU8,125 requires VCC(A) ≤ VCC(B) during steady-state operation, with VCC(A) ranging from 1.65 V to 3.6 V and VCC(B) from 2.3 V to 5.5 V. This allows up to 3.85 V differential (e.g., 1.65 V / 5.5 V), but the absolute maximum ratings limit each supply to −0.5 V to +6.5 V referenced to GND. Exceeding VCC(A) > VCC(B) risks latch-up and is prohibited per datasheet Section 14.5.
Does the NTS0102GU8,125 support true open-drain operation on both sides, and how are pull-up resistors handled?
Yes-the NTS0102GU8,125 natively supports open-drain signaling on both A and B ports. Each I/O includes an internal 10 kΩ pull-up resistor to its respective supply rail (VCC(A) for A1/A2, VCC(B) for B1/B2). These pull-ups are automatically disabled when OE = LOW, ensuring clean high-impedance isolation. External pull-ups may be added in parallel if faster rise times or lower VOL are required.
How does the IOFF circuit in the NTS0102GU8,125 protect the device during partial power-down?
The IOFF circuit in the NTS0102GU8,125 detects when either VCC(A) or VCC(B) drops to GND and immediately disables all output paths, preventing damaging backflow current through the pass-gate transistor. This behavior is specified in Section 1.1 and Table 4 (Function Table), and is critical for hot-swap applications where one domain powers down while the other remains active.
Can the NTS0102GU8,125 be used for UART level translation, and what timing constraints apply?
Yes-the NTS0102GU8,125 supports UART TX/RX bridging across voltage domains. With guaranteed 50 Mbps data rate and propagation delays ≤7.3 ns (A→B, +125 °C), it easily handles standard UART baud rates up to 3 Mbps. Critical constraints include maintaining VCC(A) ≤ VCC(B), using short PCB traces (<15 cm) to avoid one-shot re-triggering, and ensuring external drivers have ≤50 Ω output impedance for full spec compliance.
What is the significance of the "s2" marking code on the NTS0102GU8,125 package?
The "s2" top-side marking code identifies the NTS0102GU8,125 as a production-grade variant within the NTS0102 family, consistent with NXP's standardized laser marking scheme per Table 2. It confirms the device meets full specification for −40 °C to +125 °C operation, IOFF functionality, and ESD ratings, distinguishing it from earlier revisions or temperature-binned variants marked "s02".
NTS0102GU8,125 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Translator Type:
- Voltage Level
- Channel Type:
- Bidirectional
- Number of Circuits:
- 1
- Channels per Circuit:
- 2
- Voltage - VCCA:
- 1.65 V ~ 3.6 V
- Voltage - VCCB:
- 2.3 V ~ 5.5 V
- Input Signal:
- -
- Output Signal:
- -
- Output Type:
- Open Drain, Tri-State
- Data Rate:
- 50Mbps
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Features:
- Auto-Direction Sensing
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-XFQFN
NTS0102GU8,125 FAQ
1.How can I place an order for NTS0102GU8,125 through Aetrix?
Please submit a Request for Quotation (RFQ) for NTS0102GU8,125 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 NTS0102GU8,125 reliable?
The price and inventory of NTS0102GU8,125 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NTS0102GU8,125 is usually 5 days.
3.What payment methods are accepted for NTS0102GU8,125?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NTS0102GU8,125 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NTS0102GU8,125?
NTS0102GU8,125 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NTS0102GU8,125 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 NTS0102GU8,125?
For technical support, including NTS0102GU8,125 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NTS0102GU8,125 requirements.
6.How does Aetrix verify that NTS0102GU8,125 is sourced from the original manufacturer or authorized distributors?
All NTS0102GU8,125 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 NTS0102GU8,125 meets industry standards.
7.What is the process for return or replacement of NTS0102GU8,125?
All NTS0102GU8,125 units undergo pre-shipment inspection (PSI). If there is an issue with NTS0102GU8,125, 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 NTS0102GU8,125 part is unused and in its original packaging.
Return procedure for NTS0102GU8,125:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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