IS32IO1028B-GRLA2-TR

Overview

The IS32IO1028B-GRLA2-TR is a LIN bus transceiver with an integrated LDO, designed for automotive and industrial networking. It complies with LIN 2.X/SAE J2602 standards and supports data rates up to 20kBaud. The device operates on a battery supply voltage (VBAT) ranging from 6V to 30V. The built-in low-dropout regulator provides a stable 3.3V output at VCC, capable of supplying up to 100mA to external components like microcontrollers. It features sleep, standby, and normal modes to optimize power consumption, alongside robust fail-safe mechanisms including over-temperature shutdown and TXD dominant time-out protection.

Feature Summary

• Compliant with LIN 2.X and SAE J2602 specifications for secure vehicle communication
• Integrated 3.3V LDO regulator supporting loads up to 100mA with short-circuit protection
• Supports remote wakeup detection and local wakeup via the EN pin
• Includes TXD dominant time-out function to prevent bus line overpowering

Applications

• Automotive convenience electronics slave nodes
• Industrial networking systems requiring LIN physical layer compliance
• Smart grid devices utilizing analog I/O modules

Procurement Notes

Verify the specific ordering suffix against the manufacturer's latest documentation to confirm package type and temperature grade. Ensure the required VCC output voltage matches the 'B' variant specification before finalizing procurement orders. Cross-reference the datasheet revision date to ensure all electrical characteristics align with current design requirements.

Selection Notes

Select the IS32IO1028B variant when a 3.3V internal regulator output is required for the connected microcontroller or peripheral circuits. Verify that the application environment stays within the specified operating temperature range of -40°C to +125°C. Confirm that the system battery voltage remains between 6V and 30V to ensure proper operation of the undervoltage protection features.

Part Context

This component belongs to the IS32IO1028 family of LIN transceivers manufactured by Lumissil Microsystems. The 'B' designation specifically indicates the version equipped with a 3.3V LDO output, distinguishing it from the 'A' variant which provides a 5V output. Both variants share identical physical layer capabilities and are housed in eSOP-8 packages.

Replacement Considerations

IS32IO1028A-GRLA3-TR serves as a functional substitute if the system requires a 5V LDO output instead of 3.3V. Ensure the replacement part number matches the desired regulator voltage configuration before implementation.