L9658TR

Specialized ICS Overview

The L9658TR is an octal squib driver and quad sensor interface ASIC designed for automotive safety applications. It deploys up to eight squibs and interfaces with four satellite sensors, including Hall effect support on channels three and four. The device delivers a minimum of 1.2 A for 2 ms or 1.75 A for 1 ms during load dump conditions under 35 V. It features a 5.5 MHz SPI interface for diagnostics, programmable current trip points, and Manchester protocol support for variable bit rate detection.

Specialized ICS Feature Summary

• Octal deployment drivers sized for 1.2 A (min) / 2 ms and 1.75 A (min) / 1 ms
• Quad satellite interface supporting Manchester decoder and Hall sensors
• Independent high-side and low-side MOS control for diagnostic purposes
• Analog output available for squib resistance measurement

Specialized ICS Applications

• Automotive airbag system deployment
• Seatbelt pretensioner control
• Pedestrian protection systems

Specialized ICS Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and reel specifications. Confirm that the component meets the required automotive qualification standards for the intended safety application before procurement.

Specialized ICS Selection Notes

Select this component when designing systems requiring simultaneous deployment of multiple pyrotechnic actuators. Ensure the microcontroller supports the 5.5 MHz SPI interface for real-time diagnostic feedback and fault reporting.

Specialized ICS Part Context

This part belongs to STMicroelectronics' specialized interface IC family for automotive safety. It utilizes proprietary BCD5s technology to integrate high-current drivers with sensitive sensor interfaces in a single 64-lead LQFP package.

Specialized ICS Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Consult the manufacturer's datasheet for recommended alternatives if this specific revision is discontinued.