U6812B-MFPG3

Drivers, Receivers, Transceivers Overview

The U6812B-MFPG3Y is a bipolar monolithic K-line bus transceiver manufactured by Atmel, designed for bidirectional serial communication in automotive diagnostic applications. It supports ISO 9141 compatible baud rates up to 250 kBaud and operates with a supply voltage range of 7V to 26V on the VS pin and 4.5V to 5.5V on the VCC pin. The device features three short-circuit protected 40-mA open-collector buffers and a digital 1-mA push-pull RxD output. It includes built-in load-dump protection according to ISO 7637-1/4 and channel-specific over-temperature switch-off mechanisms.

Drivers, Receivers, Transceivers Feature Summary

• Provides a wide power supply voltage range suitable for automotive environments
• Includes three short-circuit protected 40-mA open-collector buffers with built-in 28-V clamping
• Features CMOS compatible digital inputs with hysteresis and an internal pull-up resistor
• Offers load-dump and interference protection compliant with ISO 7637-1/4 standards

Drivers, Receivers, Transceivers Applications

• Automotive diagnostic applications requiring ISO 9141 compatibility
• K-line bus transceivers for bi-directional serial communication
• Signal decoupling using universally applicable open-collector buffers

Drivers, Receivers, Transceivers Procurement Notes

Verify the manufacturer origin carefully, as the datasheet identifies Atmel Corporation as the producer while the model prefix suggests Microchip Technology. Confirm that the MFPG3 suffix corresponds to the SO16 tape and reel packaging variant specified in the ordering information. Ensure compliance with automotive industry specifications before integration into vehicle systems.

Drivers, Receivers, Transceivers Selection Notes

Select this component when designing circuits requiring robust K-line interface capabilities with high current drive for external loads. The integrated short-circuit protection and thermal shutdown features make it suitable for harsh automotive electrical environments. Verify that the required baud rate does not exceed 250 kBaud and that the system voltage remains within the specified operating limits.

Drivers, Receivers, Transceivers Part Context

This part belongs to the U6812B series of K-line bus transceivers originally developed by Atmel Corporation. The specific suffix indicates a particular packaging configuration optimized for automated assembly processes. As Atmel was acquired by Microchip Technology, this component represents a transition period product line often referenced under both manufacturer names in technical documentation.

Drivers, Receivers, Transceivers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.