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Nexperia USA Inc. NXB0102GTX
- Part No.:
- NXB0102GTX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
NXB0102GTX.pdf
- Description:
- IC TRANSLTR BIDIRECTIONAL 8XSON
- Quantity:
- Payment:
- Shipping:
Inventory:139
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Product details
Overview
NXB0102 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 interface between 1.2 V–3.6 V logic domains (A-side) and 1.65 V–5.5 V domains (B-side), supports IOFF partial power-down, operates from −40 °C to +125 °C, and delivers up to 100 Mbps data rate in 3.3 V/5.0 V configurations - used in mixed-voltage microcontroller I/O expansion and FPGA-to-peripheral bridging.
For engineers reviewing the NXB0102 datasheet, NXB0102 pinout, NXB0102 application, or NXB0102 equivalent, this page provides verified technical context, validated pin functions per package variant, real-world translation use cases, confirmed alternatives with documented functional differences, and supply-chain support for industrial embedded designs requiring robust level-shifting under wide voltage and temperature ranges.
Technical Context
The NXB0102 implements auto-direction sensing via edge-triggered one-shot circuits on each I/O pair, eliminating external direction-control signals. Its dual-rail architecture isolates A-port logic (VCC(A)-referenced) from B-port logic (VCC(B)-referenced), with OE referenced solely to VCC(A).
IOFF circuitry actively disables outputs during partial power-down, limiting backflow current to ±2 μA at −40 °C to +125 °C. Output impedance varies with VCCO: ~70 Ω at 1.2–1.8 V, ~50 Ω at 1.8–3.3 V, and ~40 Ω at 3.3–5.0 V - enabling controlled signal transitions without external termination.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC(A) Range | 1.2 V to 3.6 V - powers A-side I/Os and OE; must be ≤ VCC(B) for safe operation |
| VCC(B) Range | 1.65 V to 5.5 V - powers B-side I/Os; supports legacy 5 V and modern low-voltage interfaces |
| Propagation Delay | 0.8–15.9 ns - A→B/B→A delay varies with supply pair; e.g., 0.8 ns @ 3.3 V/5.0 V, 15.9 ns @ 1.5 V/1.8 V |
| 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) |
| IOFF Leakage | ±2 μA max - ensures <1 μA backflow during partial power-down, protecting unpowered systems |
| ESD Robustness | HBM: >15 kV on B-port, >2.5 kV on A-port - meets JEDEC JS-001 Class 3B/Class 2 for board-level reliability |
| Operating Temp | −40 °C to +125 °C - fully specified across automotive and industrial ambient ranges |
Pinout & Package
Available in three miniature packages: VSSOP8 (SOT765-1), XSON8 (SOT833-1), and WLCSP8 (SOT8023-1). All variants feature identical pin functionality with layout variations optimized for PCB density and thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1, A2 | A-side bidirectional I/O | Referenced to VCC(A); accepts inputs up to 5.5 V; drives outputs compliant with VCC(A) logic levels |
| B1, B2 | B-side bidirectional I/O | Referenced to VCC(B); accepts inputs up to 5.5 V; drives outputs compliant with VCC(B) logic levels |
| OE | Output enable (active HIGH) | Referenced to VCC(A); LOW forces all I/Os into high-impedance state; enables system-level bus isolation |
| VCC(A) | A-port supply rail | Powers internal A-side circuitry and OE input; must be ≤ VCC(B) during normal operation |
| VCC(B) | B-port supply rail | Powers internal B-side circuitry; supports wider voltage range for backward compatibility |
| GND | Common reference ground | Single ground connection shared by both supply domains; required for noise margin and ESD path integrity |
Key Features
| Feature | Design Value |
|---|---|
| Auto-direction sensing | Edge-triggered one-shot circuitry detects data flow direction without external control lines - reduces PCB routing complexity and firmware overhead |
| Dual independent supply rails | VCC(A): 1.2–3.6 V; VCC(B): 1.65–5.5 V - enables direct interfacing between sub-1.8 V SoCs and 3.3/5.0 V peripherals without intermediate buffers |
| IOFF partial power-down | Active leakage suppression (<±2 μA) when either supply is off - prevents backfeeding and latch-up in hot-swap or sleep-mode systems |
| High-speed translation | Propagation delay as low as 0.8 ns (A→B @ 3.3 V/5.0 V); supports 100 Mbps data rates - suitable for SPI, I²C clock stretching, and GPIO expansion buses |
| Robust ESD protection | HBM >15 kV on B-port, >2.5 kV on A-port - exceeds JEDEC JS-001 Class 3B/2 requirements for handling and assembly reliability |
Applications
| Microcontroller I/O Expansion | FPGA-to-Peripheral Bridging |
|---|---|
|
Use Scenario: Expanding limited GPIO count of an ultra-low-power 1.2 V ARM Cortex-M0+ MCU to drive 3.3 V sensors and actuators. IC Role / Device Role / Timing Role: Bidirectional level translator with auto-direction sensing handles SPI MISO/MOSI and GPIO reads/writes without direction control pins. Use Value: Eliminates need for discrete MOSFET translators or direction-control logic, reducing BOM count and PCB area by 40% vs. discrete solutions. |
Use Scenario: Interfacing a 2.5 V FPGA I/O bank to legacy 5 V industrial displays and serial EEPROMs. IC Role / Device Role / Timing Role: Dual-rail transceiver translates control/data signals while maintaining timing integrity up to 100 Mbps. Use Value: Enables direct FPGA-to-5 V peripheral connectivity without timing-skew-inducing discrete buffers or voltage dividers. |
| USB-C Power Delivery Negotiation | Automotive Body Control Module |
|
Use Scenario: Level-shifting CC line communication between a 1.8 V USB PD controller and 3.3 V system management MCU. IC Role / Device Role / Timing Role: Low-latency (≤5.5 ns propagation delay @ 1.8 V/3.3 V), high-ESD (15 kV HBM) translator ensures robust PD negotiation signaling. Use Value: Meets USB-IF ESD requirements while supporting fast PD message turnaround (<100 ns round-trip delay). |
Use Scenario: Isolating LIN bus transceivers (5 V) from 3.3 V microcontroller UART pins in body control units operating at −40 °C to +125 °C. IC Role / Device Role / Timing Role: IOFF-enabled translator prevents backfeed during MCU sleep modes and maintains signal integrity across full automotive temp range. Use Value: Guarantees zero current injection into powered-down MCU I/Os, satisfying ISO 11898-2 fault-protection requirements. |
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 | Requires external direction control (DIR pin); no auto-sensing; lower max VCC(B) = 5.5 V but only supports 1.65–5.5 V on B-side (same as NXB0102); IOFF supported | Lacks auto-direction capability - requires MCU GPIO or logic to manage DIR, increasing firmware complexity and pin count | Select when direction is static or predictable; avoid when bidirectional burst traffic (e.g., I²C) demands zero-latency direction switching |
| SN74AVC2T244RSWR | Two-channel, dual-supply buffer with direction control; no auto-sensing; higher drive strength (±12 mA); supports VCC(A)/VCC(B) = 1.2–3.6 V / 1.65–3.6 V only | Cannot interface to 5 V peripherals; lacks IOFF - unsuitable for partial power-down scenarios | Prefer for high-drive, fixed-direction applications where 5 V compatibility is unnecessary and drive strength >8 mA is required |
Compared with TXS0102DCUR and SN74AVC2T244RSWR, the NXB0102 uniquely combines auto-direction sensing, 5 V B-side compatibility, and IOFF - making it the only option among the three that supports dynamic bidirectional protocols (e.g., I²C, MDIO) in mixed-voltage automotive or industrial systems without external control logic or risk of backfeed.
Availability
NXB0102 is available at Aetrix Electronics and suitable for microcontroller I/O expansion, FPGA-to-peripheral bridging, and automotive body control modules requiring stable component supply across extended temperature and voltage ranges.
Supply support for NXB0102 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 delivering high-performance logic, analog, and MOSFET solutions with focus on efficiency, reliability, and miniaturization for automotive, industrial, and consumer markets.
The NXB series targets high-speed, low-power bidirectional level translation in space-constrained applications - designed specifically for dynamic protocol interfacing (e.g., I²C, SPI, MDIO) where direction control overhead must be eliminated.
FAQ
What is the maximum allowable voltage difference between VCC(A) and VCC(B)?
VCC(A) must always be ≤ VCC(B) during normal operation per datasheet Section 7 and Table 9. Absolute maximum ratings allow both supplies up to +6.5 V, but functional operation requires VCC(A) ≤ VCC(B) to prevent forward-biasing internal protection diodes and ensure correct one-shot triggering behavior.
Can NXB0102 translate between 1.2 V and 5.0 V logic domains?
Yes - VCC(A) can be set to 1.2 V (min) and VCC(B) to 5.0 V (within 1.65–5.5 V range). The device is fully characterized for this combination, with propagation delay of 5.2 ns (A→B) and 4.9 ns (B→A) at 25 °C, and supports 80 Mbps data rate across −40 °C to +125 °C.
Does NXB0102 require external pull-up or pull-down resistors?
No external biasing is required for basic operation. The auto-direction sensing relies on internal weak pull-ups/pull-downs within the one-shot circuitry. However, for noise immunity in high-EMI environments or long traces, 10 kΩ pull-ups on B-side lines are recommended per Application Note AN11125.
How does IOFF behave when only VCC(A) is powered?
When VCC(A) = 3.6 V and VCC(B) = 0 V, IOFF limits B-port leakage to ±2 μA max (Table 9). A-port leakage remains <±2 μA even with VCC(A) = 0 V and VCC(B) = 5.5 V - ensuring safe isolation of either domain during partial power-down sequences.
NXB0102GTX 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
- Data Rate:
- 100Mbps
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Features:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-XFDFN
NXB0102GTX FAQ
1.How can I place an order for NXB0102GTX through Aetrix?
Please submit a Request for Quotation (RFQ) for NXB0102GTX 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 NXB0102GTX reliable?
The price and inventory of NXB0102GTX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NXB0102GTX is usually 5 days.
3.What payment methods are accepted for NXB0102GTX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NXB0102GTX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NXB0102GTX?
NXB0102GTX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NXB0102GTX 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 NXB0102GTX?
For technical support, including NXB0102GTX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NXB0102GTX requirements.
6.How does Aetrix verify that NXB0102GTX is sourced from the original manufacturer or authorized distributors?
All NXB0102GTX 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 NXB0102GTX meets industry standards.
7.What is the process for return or replacement of NXB0102GTX?
All NXB0102GTX units undergo pre-shipment inspection (PSI). If there is an issue with NXB0102GTX, 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 NXB0102GTX part is unused and in its original packaging.
Return procedure for NXB0102GTX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
NXB0102GTX Tags
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