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NXP Semiconductors FXTH8715116T1
- Part No.:
- FXTH8715116T1
- Manufacturer:
- NXP Semiconductors
- Category:
- Specialized Sensors
- Package:
- Datasheet:
-
FXTH8715116T1.pdf
- Description:
- SENSOR TIRE PRESSURE RF
- Quantity:
- Payment:
- Shipping:
Inventory:1,860
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Product details
Overview
FXTH8715116T1 from NXP Semiconductors is a fully integrated tire pressure monitoring sensor (TPMS) IC combining pressure, temperature, and XZ-axis accelerometer sensing with an 8-bit S08 MCU, 10-bit ADC, internal 315/434 MHz RF transmitter, and LF receiver - all in a single 24-pin QFN package. It delivers calibrated pressure measurement from 100 to 1500 kPa, operates at 3.0 V, and supports OOK/FSK modulation for automotive TPMS applications.
For engineers reviewing the FXTH8715116T1 datasheet, FXTH8715116T1 pinout, FXTH8715116T1 application, or FXTH8715116T1 equivalent, this page provides verified technical context, validated pin functions, real-world use cases in direct-fit TPMS transmitters, and confirmed alternative parts for design flexibility and supply continuity.
Technical Context
The FXTH8715116T1 integrates a pressure-sensing die, temperature sensor, and optional XZ-axis accelerometer into a multi-chip module (MCM) architecture. Its S08 MCU executes factory firmware and user-configurable measurement sequences, while dedicated state machines manage low-power wake-up, sensor acquisition, and RF transmission without CPU intervention.
RF functionality relies on a PLL-based transmitter with fractional-N divider, external crystal oscillator, and programmable data rate generator supporting Manchester, Bi-Phase, or NRZ encoding. The differential LF detector enables bidirectional communication with vehicle base stations via 125 kHz carrier detection and telegram verification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Pressure Range | 100–1500 kPa calibrated range - enables direct fitment in passenger car and light-truck TPMS systems per ISO 21848. |
| Accelerometer Axis | XZ-axis configuration - supports motion-triggered wake-up and orientation-aware transmission scheduling. |
| RF Output Frequency | 315 MHz or 434 MHz selectable - compliant with regional ISM band regulations for North America and ETSI regions. |
| RF Power Consumption | <8 mA at 434 MHz, 5 dBm, 3.0 V, 25 °C - extends battery life to >10 years in typical TPMS deployments. |
| ADC Resolution | 10-bit with six channels - provides sufficient dynamic range for simultaneous pressure, temperature, and voltage reference digitization. |
| MCU Core | S08 with 8 KB flash + 512 B RAM - hosts embedded firmware for sensor calibration, RF packet formatting, and low-power state management. |
| Package | 24-pin QFN, 7 × 7 mm, 1-hole lid - optimized for high-volume automated placement and hermetic sealing in rubber-mounted TPMS sensors. |
Pinout & Package
FXTH8715116T1 uses a 24-pin, 7 × 7 mm QFN package with exposed thermal pad and 1-hole lid for mechanical anchoring in tire valve stem assemblies. The package meets AEC-Q100 Grade 2 requirements for automotive under-hood operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PTA0–PTA4, PTB0–PTB1 | GPIO / ADC / TPM input | Seven multipurpose pins: four support STOP4 wakeup; two connect to ADC10; two to TPM1 timer channels. |
| LFA / LFB | Differential LF input | Independent signal pins for 125 kHz LF carrier detection and decoding - enables vehicle-initiated sensor interrogation. |
| X0 / X1 | Crystal oscillator terminals | Connects external 32.768 kHz crystal for precise timing of periodic wake-up and RF transmission intervals. |
| RF | RF output terminal | Direct connection to matching network and PCB antenna - supports 315/434 MHz OOK/FSK transmission with ≤5 dBm output. |
| VDD / VDDA / VSSA / VREG / RFVSS / VSS | Power and ground rails | Separate analog/digital/RF power domains minimize noise coupling between sensing, processing, and RF sections. |
Key Features
| Feature | Design Value |
|---|---|
| Dedicated measurement state machines | Offloads pressure/temperature acquisition and RF transmission sequencing from MCU - reduces active current and firmware complexity. |
| Programmable data rate generator | Enables flexible air-time control for regulatory compliance and interference avoidance in dense TPMS environments. |
| 256-bit variable-length RF buffer | Supports custom packet formats including manufacturer ID, sensor ID, CRC, and diagnostic flags - essential for OEM-specific protocols. |
| Real-Time Interrupt (RTI) | Configurable 2–128 ms intervals driven by LFO - ensures deterministic wake-up timing for periodic pressure reporting. |
| Low-voltage detection & thermal restart | Hardware-level monitoring triggers safe shutdown or reset below 2.2 V or above 125 °C - critical for battery-powered reliability. |
Applications
| Direct-Fit TPMS Transmitter | OEM Tire Valve Assembly |
|---|---|
Use Scenario: Mounted inside tire valve stem to monitor pressure and temperature during vehicle operation and stationary periods. IC Role / Device Role / Timing Role: Primary sensor fusion IC performing autonomous measurement, conditioning, and 434 MHz RF transmission every 30–60 seconds. Use Value: Eliminates need for external MCU or RF IC - reduces BOM count and PCB area while meeting SAE J2657 duty-cycle requirements. |
Use Scenario: Integrated into aluminum or brass valve stem housing with MEMS pressure die and lithium battery. IC Role / Device Role / Timing Role: System-on-package controller managing battery health, motion-triggered wake-up, and encrypted RF telemetry. Use Value: Enables tamper-resistant, long-life (>10 yr) TPMS units qualified to AEC-Q200 and ISO 21848 standards. |
| Aftermarket TPMS Sensor Replacement | TPMS Learning Mode Support |
Use Scenario: Universal replacement sensor programmed via LF activation to match vehicle-specific protocol and ID. IC Role / Device Role / Timing Role: Field-programmable TPMS node using BKGD/PTA4 pin for background debug and LF-triggered reconfiguration. Use Value: Supports multi-OEM compatibility through software-defined packet structure and configurable acceleration thresholds. |
Use Scenario: Responding to 125 kHz LF pulses from diagnostic tools or vehicle ECU during TPMS initialization. IC Role / Device Role / Timing Role: LF receiver front-end with carrier detect, auto-zero sequence, and telegram verification logic. Use Value: Enables reliable sensor ID registration and position learning without physical access to the wheel well. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TPMS sensor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| FXTH8715026T1 | Z-axis only accelerometer; identical pressure range (100–1500 kPa), same package and RF specs. | Lacks X-axis motion detection - unsuitable for roll-angle or lateral-force sensing in advanced driver assistance. | Select when cost optimization is prioritized and XZ-axis functionality is not required for vehicle platform. |
| FXTH8718116T1 | Extended pressure range (100–1800 kPa); same XZ-axis accelerometer and RF architecture. | Supports high-pressure commercial vehicles and run-flat tire monitoring where 1500 kPa ceiling is insufficient. | Choose for heavy-duty or specialty vehicle programs requiring higher burst-pressure margin and extended calibration range. |
Compared with FXTH8715026T1 and FXTH8718116T1, the FXTH8715116T1 uniquely balances XZ-axis motion awareness with the 100–1500 kPa passenger-vehicle pressure range - making it the optimal choice for mainstream OEM TPMS transmitters requiring orientation-triggered wake-up and regulatory-compliant RF output.
Availability
FXTH8715116T1 is available at Aetrix Electronics and suitable for automotive TPMS transmitters, OEM tire valve assemblies, and aftermarket sensor replacements requiring stable component supply, AEC-Q100 qualification, and long-term lifecycle support.
Supply support for FXTH8715116T1 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 leader focused on secure connectivity solutions for automotive, industrial, and IoT applications, with deep expertise in RF, sensor fusion, and automotive-grade microcontrollers.
The FXTH871x6 product line was designed specifically for integrated, battery-operated TPMS transmitters - combining MEMS sensing, ultra-low-power processing, and certified RF transmission in a single AEC-Q100-qualified package.
FAQ
What is the calibrated pressure range of the FXTH8715116T1?
The FXTH8715116T1 features a factory-calibrated pressure range of 100 to 1500 kPa. This range is validated across temperature (-40 °C to +125 °C) and meets ISO 21848 requirements for passenger vehicle TPMS applications. Calibration data is stored in on-chip parameter registers and applied automatically during ADC conversion.
Does the FXTH8715116T1 support both 315 MHz and 434 MHz RF transmission?
Yes, the FXTH8715116T1 supports both 315 MHz and 434 MHz RF transmission via its PLL-based transmitter. Frequency selection is configured in firmware using PLL control registers (PLLCR[1:0] and PLLCR[3:2]), and the device complies with FCC Part 15 and ETSI EN 300 220 regulations at either band.
How does the FXTH8715116T1 achieve ultra-low power consumption in TPMS applications?
The FXTH8715116T1 achieves ultra-low power via dedicated hardware state machines that handle measurement and RF transmission autonomously, minimizing MCU wake time. Combined with STOP modes, programmable RTI intervals, and sub-8 mA RF transmit current at 434 MHz, it enables >10-year battery life in typical deployment conditions.
What interfaces does the FXTH8715116T1 provide for programming and debugging?
The FXTH8715116T1 uses the BKGD/PTA4 pin for background debug communication via NXP's BDC interface. It supports in-circuit programming, real-time register inspection, and firmware updates without requiring a separate debug header - essential for high-volume TPMS manufacturing and field reprogramming.
Is the FXTH8715116T1 qualified for automotive use?
Yes, the FXTH8715116T1 is qualified to AEC-Q100 Grade 2 (−40 °C to +105 °C ambient) and designed for automotive TPMS applications. It includes on-die thermal shutdown, low-voltage detection, and robust LF/RF coexistence - all validated per ISO 16750 and ISO 21848 test requirements.
FXTH8715116T1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Sensor Type:
- Tire Pressure Monitoring (TPMS)
- Output Type:
- RF
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
FXTH8715116T1 FAQ
1.How can I place an order for FXTH8715116T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for FXTH8715116T1 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 FXTH8715116T1 reliable?
The price and inventory of FXTH8715116T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FXTH8715116T1 is usually 5 days.
3.What payment methods are accepted for FXTH8715116T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FXTH8715116T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for FXTH8715116T1?
FXTH8715116T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your FXTH8715116T1 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 FXTH8715116T1?
For technical support, including FXTH8715116T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FXTH8715116T1 requirements.
6.How does Aetrix verify that FXTH8715116T1 is sourced from the original manufacturer or authorized distributors?
All FXTH8715116T1 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 FXTH8715116T1 meets industry standards.
7.What is the process for return or replacement of FXTH8715116T1?
All FXTH8715116T1 units undergo pre-shipment inspection (PSI). If there is an issue with FXTH8715116T1, 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 FXTH8715116T1 part is unused and in its original packaging.
Return procedure for FXTH8715116T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
FXTH8715116T1 Tags
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