A6841ELWTR-T

Overview

The A6841ELWTR-T is a medium-power serial-input latched sink driver integrated circuit manufactured by Allegro MicroSystems. It utilizes the DABiC-5 merged bipolar/CMOS/DMOS process, combining low-power CMOS logic inputs with bipolar output power drivers. The device features eight outputs with a 1:8 input-to-output ratio, configured as low-side switches. It supports parallel and serial interfaces and accepts non-inverting inputs. Electrical specifications include a maximum load voltage of 50V, a supply voltage range of 3V to 5.5V, and a maximum output current of 500mA per channel. The component operates within a temperature range of -20°C to +85°C and is available in a 20-SOIC surface-mount package.

Feature Summary

• Integrates low-power CMOS logic inputs with bipolar output power drivers for interface flexibility
• Features eight latched sink outputs suitable for peripheral power driver applications
• Supports both parallel and serial input interfaces for system integration

Applications

• Peripheral power driver applications
• Medium-power serial-input latch driver circuits
• General purpose load switching

Procurement Notes

Verify the specific suffix 'ELWTR' against official datasheets to confirm package type and tape/reel configuration. Check manufacturer status as some variants may be discontinued. Ensure compatibility with existing PCB footprints for the 20-SOIC package. Confirm RoHS compliance status for regulatory requirements. Validate supply chain sources for authenticity.

Selection Notes

Select this component when a medium-power solution with multiple latched outputs is required. The DABiC-5 process offers a balance of speed and drive capability. Consider the 50V load voltage limit and 500mA output current for load matching. Evaluate interface needs between parallel and serial modes. Assess thermal performance within the specified operating temperature range.

Part Context

The A6841 belongs to Allegro's family of medium-power serial-input latched sink drivers. It shares architectural similarities with the A6821 and A6841 models, leveraging the same DABiC-5 technology. This family targets applications requiring interface flexibility beyond standard logic buffers. The part serves as a bridge between low-voltage control logic and higher-power loads.

Replacement Considerations

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