TJA1128FTK/1Z

Specialized Overview

The TJA1128FTK/1Z is a LIN Mini System Basis Chip (SBC) from NXP Semiconductors, designed for automotive applications with a nominal 12 V system. It integrates a LIN transceiver compliant with ISO 17987-4:2016 and SAE J2602 standards, supporting baud rates up to 20 kBd. The device includes a low-dropout voltage regulator (LDO) providing 3.3 V output with ±2% accuracy and an 85 mA current capability. Key features include two WAKE inputs, a window watchdog, and a high-voltage multipurpose output (HVMPO). It operates within a battery supply range of 5.0 V to 28 V and supports quasi one-time configuration via SPI.

Specialized Feature Summary

• Integrates a LIN transceiver, LDO, watchdog, and multiple I/Os in a single HVSON14 package
• Supports configurable local wake-up via WAKE1 and WAKE2 pins with level-sensitive or cyclic detection
• Features a programmable HVMPO for limp home, bias control, or general purpose functions
• Includes a window watchdog with selectable periods and autonomous mode

Specialized Applications

• Body Control Modules (BCM)
• Seat control units
• Sensor nodes in automotive environments

Specialized Procurement Notes

Verify the specific suffix '1Z' against the manufacturer's official documentation to confirm the exact factory preset CRC value and initial configuration state. Ensure that the ordering information matches the required LDO voltage and wake-up input count defined in the family overview table. Cross-reference the package type HVSON14 with your PCB footprint requirements.

Specialized Selection Notes

Select this variant when a 3.3 V LDO output is required alongside a window watchdog and two local wake-up inputs. Confirm compatibility with the target microcontroller's reset timing and SPI interface requirements. Evaluate the need for the specific initial CRC value associated with the 'F' device code to ensure proper nonvolatile memory programming during production.

Specialized Part Context

The TJA1128FTK/1Z belongs to the TJA1128 LIN mini SBC family. Variants are distinguished by LDO output voltage (3.3 V or 5.0 V), number of WAKE inputs (1 or 2), presence of a watchdog, and initial CRC values. This specific model corresponds to the 'F' device code, indicating a 3.3 V LDO, one WAKE input, and a watchdog feature set.

Specialized Replacement Considerations

Direct substitutes within the same family include TJA1128ETK/1Z (5.0 V LDO, 1 WAKE, Watchdog) and TJA1128GTK/1Z (5.0 V LDO, 2 WAKE, Watchdog). Verify pin compatibility and electrical specifications before substitution.