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Nexperia USA Inc. LSF0202GSX
- Part No.:
- LSF0202GSX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
LSF0202GSX.pdf
- Description:
- LSF0202GS/SOT1203/X2SON8
- Quantity:
- Payment:
- Shipping:
Inventory:3,497
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Product details
Overview
LSF0202GSX from Nexperia is a 2-bit bidirectional multi-voltage level translator supporting open-drain and push-pull interfaces, with up-translation ≤100 MHz and down-translation ≥100 MHz at ≤30 pF load, 5 V-tolerant I/O pins, and operation from −40 °C to +125 °C in XSON8 (SOT1203) package. It enables voltage translation between 0.95 V–5.0 V pairs without direction control, used in I²C, SMBus, and GPIO interconnects across telecom and industrial systems.
For engineers reviewing the LSF0202GSX datasheet, LSF0202GSX pinout, LSF0202GSX application, or LSF0202GSX equivalent, key selection criteria include channel-wise independent reference voltage assignment (refA/refB), EN-controlled high-impedance state, low RON (≤7 Ω), and compatibility with hot-insertion and mixed-voltage SoC-to-peripheral signaling.
Technical Context
The LSF0202GSX implements passive FET-based bidirectional translation with no internal direction logic-voltage levels on refA and refB define translation thresholds per channel, enabling asymmetric up/down translation paths. Its architecture supports simultaneous 0.95 V ↔ 3.3 V and 1.8 V ↔ 5.0 V translation on separate channels.
EN pin activation enables/disables both channels; when low, all I/O pins enter high-impedance state. The device operates with no external biasing beyond pull-up resistors on open-drain nets and requires no power supply other than the referenced I/O domains (refA/refB).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channels | 2 independent bidirectional data paths (A1/B1 and A2/B2) |
| Up-translation speed | ≤100 MHz at CL = 30 pF - supports fast peripheral read-back in PMBus/SMBus |
| Down-translation speed | ≥100 MHz at CL = 30 pF - enables high-speed host-initiated writes to low-voltage sensors |
| Reference voltage range | refA/refB each support 0.95 V to 5.0 V - allows mixed-voltage domain bridging (e.g., 1.2 V MCU ↔ 3.3 V sensor) |
| ON-resistance (RON) | ≤7 Ω at VrefA = 1.0 V - minimizes signal distortion and voltage drop on translated lines |
| ESD protection | HBM >2000 V, CDM >1000 V - ensures robustness during board handling and system integration |
| Operating temperature | −40 °C to +125 °C - qualified for industrial and telecom infrastructure environments |
Pinout & Package
XSON8 (SOT1203) package: extremely thin small outline, no leads, 8-terminal surface-mount, body size 1.35 × 1.0 × 0.35 mm, thermal pad optional, pin 1 indicator at lower-left corner below marking code 'h6'.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| B2 | Data I/O Channel 2 (B-side) | Translates bidirectionally with A2; connects to 3.3 V or 5.0 V bus segment |
| B1 | Data I/O Channel 1 (B-side) | Translates bidirectionally with A1; commonly tied to I²C SDA/SCL or GPIO net |
| GND | Ground reference | Common return for internal FET body ties and ESD structures; must be low-inductance |
| refB | Reference voltage B | Sets voltage threshold for B-side I/O; defines high-level logic for B1/B2 pins |
| A2 | Data I/O Channel 2 (A-side) | Translates bidirectionally with B2; connects to 0.95 V–2.5 V domain (e.g., core logic) |
| A1 | Data I/O Channel 1 (A-side) | Translates bidirectionally with B1; supports sub-1 V operation down to 0.95 V |
| refA | Reference voltage A | Sets voltage threshold for A-side I/O; independent of refB for asymmetric translation |
| EN | Enable input (active HIGH) | Drives both channels into high-Z when LOW; synchronously disables translation path |
Key Features
| Feature | Design Value |
|---|---|
| No direction pin required | Reduces PCB routing complexity and eliminates timing-critical direction-control signals |
| Independent refA/refB per channel | Enables concurrent 1.2 V ↔ 3.3 V and 1.8 V ↔ 5.0 V translation on same device |
| 5 V-tolerant I/O | Allows direct connection to legacy TTL/CMOS buses without external clamping |
| Hot-insertion support | Prevents bus contention during live module replacement in telecom line cards |
| Flow-through pinout (GS variant) | Minimizes trace crossovers in dense routing; A1/B1 and A2/B2 aligned on opposite edges |
Applications
| Industrial PLC I/O Expansion | Server Baseboard Management (BMC) |
|---|---|
|
Use Scenario: Bridging 1.8 V FPGA GPIO to 3.3 V analog sensor interface and 5.0 V relay driver ICs. IC Role / Device Role / Timing Role: Bidirectional level shifter enabling real-time sensor readout and actuator control without protocol translation. Use Value: Eliminates need for two discrete translators; single-device solution reduces BOM count and layout area by 40% vs dual-channel alternatives. |
Use Scenario: Interfacing 3.3 V BMC microcontroller to 1.0 V DDR5 memory SPD EEPROM and 5.0 V fan tachometer inputs. IC Role / Device Role / Timing Role: Voltage domain isolator for SMBus and PMBus transactions with strict timing compliance. Use Value: Meets SMBus 3.0 tBUF and tLOW requirements at 100 kHz due to ≤1.3 ns propagation delay (CL = 50 pF). |
| Telecom Optical Module Control | Automotive Infotainment Debug Interface |
|
Use Scenario: Connecting 1.2 V DSP core to 2.5 V SFP+ MDIO management bus and 3.3 V laser bias DAC. IC Role / Device Role / Timing Role: Multi-rail translator for hot-pluggable optical transceivers requiring isolated voltage domains. Use Value: Supports hot insertion via EN-controlled isolation; prevents bus lockup during module swap in live systems. |
Use Scenario: Linking 0.95 V automotive SoC debug port to 3.3 V UART-to-USB bridge and 5.0 V CAN transceiver diagnostics line. IC Role / Device Role / Timing Role: Low-voltage interface conditioner for production test and field firmware update paths. Use Value: Enables reliable UART communication at 2 Mbps with <1 ns skew between TX/RX paths under −40 °C cold-start conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional level translation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TXS0102DCUR | Requires external VREF bias; higher standby current (10 µA vs 1 µA); no 0.95 V support | Limited to ≥1.2 V domains; unsuitable for sub-1 V SoC interfaces | Select when existing design uses TI ecosystem and 1.2 V minimum is acceptable |
| PCA9306DCUR | Fixed 2-channel architecture; no EN pin; max 3.3 V ref; CL-limited to 60 MHz down-translation | Cannot support 5 V-tolerant buses or >3.3 V translation; lacks enable control | Choose only for cost-sensitive 3.3 V ↔ 1.8 V I²C links where EN functionality is unused |
Compared with TXS0102DCUR and PCA9306DCUR, LSF0202GSX uniquely supports 0.95 V operation, integrated EN control, 5 V tolerance, and ≥100 MHz down-translation-making it the sole option for high-speed, ultra-low-voltage, and hot-swap-capable designs.
Availability
LSF0202GSX is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, telecom optical module control, and server baseboard management requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for LSF0202GSX 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 high-volume, high-reliability essential semiconductors including logic, discrete, and MOSFET devices.
The LSF series targets mixed-voltage system interconnects in telecom, computing, and industrial equipment-designed specifically for seamless, pin-efficient bridging between legacy and next-generation low-power interfaces.
FAQ
Does LSF0202GSX require external pull-up resistors?
Yes-external pull-up resistors are mandatory on all open-drain or push-pull I/O lines (A1/B1/A2/B2) to establish valid HIGH logic levels. Typical values range from 2.2 kΩ to 10 kΩ depending on bus capacitance and speed; the device itself contains no internal pull-ups.
Can refA and refB be set to the same voltage?
Yes-refA and refB may be tied to identical voltages (e.g., both at 3.3 V) to configure symmetric translation, but doing so forfeits the device's key advantage: independent domain bridging. The architecture fully supports identical or disparate references per channel.
What happens to I/O pins when EN = LOW?
When EN is driven LOW, all A1/B1/A2/B2 pins enter high-impedance (Z) state-effectively disconnecting both translation channels. This provides clean bus isolation during power sequencing, reset, or hot-swap events without signal contention.
Is LSF0202GSX qualified for automotive applications?
No-LSF0202GSX is not AEC-Q100 qualified and is specified only for industrial temperature range (−40 °C to +125 °C). Nexperia explicitly states non-automotive qualification in its legal disclaimers; use in automotive systems requires formal validation and is at customer's own risk.
LSF0202GSX 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:
- 0.95 V ~ 5 V
- Voltage - VCCB:
- 0.95 V ~ 5 V
- Input Signal:
- -
- Output Signal:
- -
- Output Type:
- Open Drain, Push-Pull, Tri-State
- Data Rate:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Features:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-XFDFN
LSF0202GSX FAQ
1.How can I place an order for LSF0202GSX through Aetrix?
Please submit a Request for Quotation (RFQ) for LSF0202GSX 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 LSF0202GSX reliable?
The price and inventory of LSF0202GSX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LSF0202GSX is usually 5 days.
3.What payment methods are accepted for LSF0202GSX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LSF0202GSX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LSF0202GSX?
LSF0202GSX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LSF0202GSX 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 LSF0202GSX?
For technical support, including LSF0202GSX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LSF0202GSX requirements.
6.How does Aetrix verify that LSF0202GSX is sourced from the original manufacturer or authorized distributors?
All LSF0202GSX 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 LSF0202GSX meets industry standards.
7.What is the process for return or replacement of LSF0202GSX?
All LSF0202GSX units undergo pre-shipment inspection (PSI). If there is an issue with LSF0202GSX, 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 LSF0202GSX part is unused and in its original packaging.
Return procedure for LSF0202GSX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LSF0202GSX Tags
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74LVC1T45GW,125
Nexperia USA Inc.
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74LVCH2T45DC,125
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74LVC2T45GT,115
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