A6841ELW-20-T

Overview

The A6841ELW-20-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 an 8-channel output configuration with a 1:8 input-to-output ratio, housed in a 20-SOIC package. It supports parallel and serial interfaces, operates with a supply voltage of 3V to 5.5V, and handles load voltages up to 50V. The maximum output current per channel is 500mA, and it functions within a temperature range of -20°C to 85°C.

Feature Summary

• Integrates low-power CMOS logic inputs with bipolar output power drivers for enhanced interface flexibility.
• Features a serial-input latched sink driver architecture suitable for peripheral power driver applications.
• Supports both parallel and serial interface modes for versatile system integration.

Applications

• Peripheral power driver applications
• Interface systems requiring flexibility beyond standard logic buffers
• Medium-power switching circuits

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific suffix 'ELW' matches the required package and temperature grade specifications. Check for end-of-life status as this series may be discontinued. Ensure compatibility with existing PCB footprints for the 20-SOIC package before procurement.

Selection Notes

Select this component when a high-current bipolar output driver is needed alongside CMOS-compatible logic inputs. The 1:8 ratio allows controlling eight outputs from a single input line via serial data. Consider the 20-SOIC package constraints and thermal requirements for the operating environment. Verify that the 500mA output capability meets the load requirements of the connected peripherals.

Part Context

The A6841 belongs to the A68xx family of medium-power serial-input latched sink drivers from Allegro MicroSystems. This family leverages the DABiC-5 technology to merge bipolar and CMOS processes. The A6841 specifically provides an 8-channel output configuration, distinguishing it from other variants in the series that may offer different channel counts or interface options.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Consult Allegro MicroSystems for current alternative recommendations if this specific part number is unavailable.