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Nexperia USA Inc. NXB0102UNAZ
- Part No.:
- NXB0102UNAZ
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
NXB0102UNAZ.pdf
- Description:
- NXB0102UN/SOT8023/WLCSP8
- Quantity:
- Payment:
- Shipping:
Inventory:4,250
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Product details
Overview
NXB0102UNAZ from Nexperia is a 2-bit dual-supply bidirectional voltage-level translating transceiver with auto-direction sensing and 3-state output control. It enables seamless interfacing between 1.2 V–3.6 V (A-side) and 1.65 V–5.5 V (B-side) domains, supports ±2 mA input drive, delivers up to 100 Mbps data rate at 3.3 V/5.0 V, and operates across −40 °C to +125 °C - used in mixed-voltage I²C, SMBus, and GPIO interconnects between microcontrollers and peripherals.
For engineers reviewing the NXB0102UNAZ datasheet, NXB0102UNAZ pinout, NXB0102UNAZ application, or NXB0102UNAZ equivalent, key selection criteria include its auto-direction architecture (no direction-control pin), IOFF partial power-down compliance, asymmetric supply tolerance (VCC(A) ≤ VCC(B)), and WLCSP8 package suitability for space-constrained portable electronics.
Technical Context
The NXB0102UNAZ implements edge-triggered one-shot circuitry on both A and B ports to autonomously detect data flow direction and enable corresponding output drivers without external control signals. Its dual-reference I/O structure isolates A-port signals to VCC(A) and B-port signals to VCC(B), enabling true bidirectional translation across non-overlapping voltage domains.
Each channel integrates weak-output drivers with transient acceleration via PMOS/NMOS boost transistors, delivering typical output impedances of 70 Ω (1.2–1.8 V), 50 Ω (1.8–3.3 V), and 40 Ω (3.3–5.0 V). The OE input is referenced solely to VCC(A), and IOFF protection ensures <±2 μA leakage when either supply is powered down.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC(A) Range | 1.2 V to 3.6 V - powers A-port logic and OE input; must be ≤ VCC(B) for safe operation |
| VCC(B) Range | 1.65 V to 5.5 V - powers B-port logic and output drivers; supports legacy 5 V interfaces |
| Data Rate | Up to 100 Mbps - achievable at VCC(A) = 3.3 V / VCC(B) = 5.0 V over temperature (−40 °C to +125 °C) |
| Propagation Delay | 0.8 ns (min) to 7.0 ns (max) B→A at 3.3 V/5.0 V - enables high-speed bidirectional signaling with low latency |
| IOFF Leakage | ±2 μA max at −40 °C to +125 °C - prevents backflow current during partial power-down of host systems |
| ESD Rating (B port) | HBM >15 kV - robust protection for high-voltage B-side connections in noisy industrial environments |
| Operating Temp | −40 °C to +125 °C - qualified for automotive under-hood and industrial control applications |
Pinout & Package
Package: WLCSP8 (SOT8023-1), 0.75 × 1.55 × 0.60 mm, wafer-level chip-scale package with 8 solder bumps; suitable for ultra-compact PCB layouts and fine-pitch routing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1, A2 | A-side bidirectional I/O (VCC(A)-referenced) | Connect to low-voltage domain (e.g., 1.2 V/1.8 V MCU GPIO); tolerate up to 3.6 V input |
| B1, B2 | B-side bidirectional I/O (VCC(B)-referenced) | Interface with higher-voltage peripherals (e.g., 3.3 V/5.0 V sensors); accept inputs up to 5.5 V |
| OE | Output enable (active HIGH, VCC(A)-referenced) | Drives all I/Os into high-impedance state when LOW; requires no level shifting |
| VCC(A) | A-port supply | Must be ≤ VCC(B); powers internal logic and OE input |
| VCC(B) | B-port supply | Enables translation to 5 V systems; supplies B-port drivers and clamping diodes |
| GND | Common reference | Single ground connection required; no separate analog/digital GND pins |
Key Features
| Feature | Design Value |
|---|---|
| Auto-direction sensing | Eliminates need for external direction-control signal - reduces PCB routing complexity and firmware overhead |
| Asymmetric supply support | VCC(A) = 1.2–3.6 V, VCC(B) = 1.65–5.5 V with VCC(A) ≤ VCC(B) - enables direct interface between modern low-V MCU and legacy 5 V peripherals |
| IOFF partial power-down | Blocks damaging backflow current when either supply is off - critical for hot-swap and battery-backed subsystems |
| High ESD immunity (B port) | HBM >15 kV - protects against electrostatic discharge in handling and field operation without external TVS |
| WLCSP8 footprint | 0.75 × 1.55 mm area - saves >60% board space vs. VSSOP8; compatible with standard SMT reflow processes |
Applications
| Mobile Sensor Hub Interface | Automotive Body Control Module |
|---|---|
|
Use Scenario: Interfacing a 1.8 V application processor with 3.3 V ambient light and proximity sensors in smartphone bezel modules. IC Role / Device Role / Timing Role: Bidirectional level translator for I²C clock/data lines; auto-detects read/write direction without software intervention. Use Value: Eliminates direction-control GPIO and timing-critical firmware toggling, reducing integration effort and bus arbitration latency. |
Use Scenario: Connecting a 3.3 V microcontroller to 5.0 V LIN transceivers and door-lock actuators in body control units. IC Role / Device Role / Timing Role: Voltage translator for UART and GPIO signals; IOFF prevents backfeed during sleep-mode partial power-down. Use Value: Enables reliable wake-up signaling and diagnostic communication while meeting ISO 11898-2 EMC and leakage requirements. |
| Industrial PLC I/O Expansion | Wearable Health Monitor |
|
Use Scenario: Bridging 2.5 V FPGA-based logic to 5.0 V analog front-end ADCs and DACs in modular I/O cards. IC Role / Device Role / Timing Role: High-speed bidirectional translator for parallel data buses; supports 80 Mbps sustained throughput at 2.5 V/5.0 V. Use Value: Maintains signal integrity across mixed-supply domains without added delay or skew, simplifying timing closure. |
Use Scenario: Linking a 1.2 V ultra-low-power ARM Cortex-M0+ MCU to 1.8 V biopotential sensor ICs in compact ECG patches. IC Role / Device Role / Timing Role: Minimal-footprint level shifter for SPI and interrupt lines; WLCSP8 enables sub-10 mm² total solution size. Use Value: Reduces system standby current by enabling full power gating of sensor rails while preserving communication readiness. |
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 |
|---|---|---|---|
| TXS0102DCUR | VCC(A): 1.2–3.6 V, VCC(B): 1.8–5.5 V; no IOFF; HBM ESD = 4 kV (B port) | Lacks partial power-down protection; lower ESD robustness limits use in unshielded industrial environments | Select when cost sensitivity outweighs IOFF requirement and ESD exposure is controlled |
| SN74AVC2T244RSWR | Direction-controlled (DIR pin required); VCC: 1.2–3.6 V only; no 5 V tolerant B port | Requires additional GPIO and firmware coordination; cannot interface directly to 5 V peripherals | Choose only if existing design already uses DIR-based topology and 5 V compatibility is unnecessary |
Compared with TXS0102DCUR and SN74AVC2T244RSWR, NXB0102UNAZ uniquely combines auto-direction sensing, 5 V-tolerant B-side I/O, IOFF protection, and WLCSP8 packaging - making it optimal for space-constrained, mixed-voltage, and partial-power-down systems where reliability and layout simplicity are critical.
Availability
NXB0102UNAZ is available at Aetrix Electronics and suitable for mobile sensor hubs, automotive body controllers, industrial PLC I/O expansion, and wearable health monitors requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for NXB0102UNAZ 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
Nexperia is a global semiconductor expert focused on essential efficiency technologies, delivering high-performance logic, discrete, and MOSFET solutions optimized for power, space, and reliability.
The NXB series targets high-density, low-power bidirectional voltage translation in portable and automotive applications - designed specifically for systems demanding automatic direction detection, minimal footprint, and robust partial-power-down behavior.
FAQ
What is the maximum allowable voltage difference between VCC(A) and VCC(B)?
VCC(A) must always be less than or equal to VCC(B) during normal operation per datasheet Section 7 and Table 4. No maximum differential is specified beyond this constraint; however, absolute maximum ratings limit each supply to −0.5 V to +6.5 V relative to GND. Violating VCC(A) ≤ VCC(B) risks latch-up or permanent damage.
Can NXB0102UNAZ translate between 1.2 V and 5.0 V domains?
Yes - VCC(A) can be set to 1.2 V (minimum) and VCC(B) to 5.0 V (within 1.65–5.5 V range), satisfying the VCC(A) ≤ VCC(B) requirement. The A-port tolerates inputs up to 3.6 V, and the B-port accepts inputs up to 5.5 V, enabling full bidirectional translation across this voltage pair at up to 40 Mbps (−40 °C to +125 °C).
Is external pull-up resistance required on A or B ports?
No external pull-ups are required for basic operation. The device's auto-direction architecture relies on active driving from both sides. However, weak pull-ups (≥100 kΩ) may be needed on open-drain buses like I²C to ensure defined idle states - values must avoid exceeding ±2 mA input drive requirement per Section 12.3.
Does the WLCSP8 package support reflow soldering with standard lead-free profiles?
Yes - the SOT8023-1 WLCSP8 package is qualified for IPC/JEDEC J-STD-020D reflow profiles, including peak temperatures up to 260 °C for ≤60 seconds. Its 0.4 mm bump pitch and NiAu surface finish ensure reliable solder joint formation with Type 3 or finer solder paste and standard stencil designs.
NXB0102UNAZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Translator Type:
- Voltage Level
- Channel Type:
- Bidirectional
- Number of Circuits:
- 1
- Channels per Circuit:
- 2
- Voltage - VCCA:
- 1.2 V ~ 3.6 V
- Voltage - VCCB:
- 1.65 V ~ 5.5 V
- Input Signal:
- -
- Output Signal:
- -
- Output Type:
- Tri-State, Non-Inverted
- Data Rate:
- 100Mbps
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Features:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-UFBGA, WLCSP
NXB0102UNAZ FAQ
1.How can I place an order for NXB0102UNAZ through Aetrix?
Please submit a Request for Quotation (RFQ) for NXB0102UNAZ 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 NXB0102UNAZ reliable?
The price and inventory of NXB0102UNAZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NXB0102UNAZ is usually 5 days.
3.What payment methods are accepted for NXB0102UNAZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NXB0102UNAZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NXB0102UNAZ?
NXB0102UNAZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NXB0102UNAZ 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 NXB0102UNAZ?
For technical support, including NXB0102UNAZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NXB0102UNAZ requirements.
6.How does Aetrix verify that NXB0102UNAZ is sourced from the original manufacturer or authorized distributors?
All NXB0102UNAZ 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 NXB0102UNAZ meets industry standards.
7.What is the process for return or replacement of NXB0102UNAZ?
All NXB0102UNAZ units undergo pre-shipment inspection (PSI). If there is an issue with NXB0102UNAZ, 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 NXB0102UNAZ part is unused and in its original packaging.
Return procedure for NXB0102UNAZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
NXB0102UNAZ Tags
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