A6818EEPTR-T

Overview

The A6818EEPTR-T is a 32-bit serial input latched source driver manufactured by Allegro MicroSystems. It integrates a CMOS shift register, data latches, and control circuitry with bipolar sourcing outputs and PNP active pull-downs. Designed primarily for vacuum-fluorescent displays, it features a 60 V minimum output breakdown voltage and -40 mA output current capability. The device operates on a 3V to 5.5V supply and accepts standard logic inputs. It is housed in a 44-pin PLCC package.

Feature Summary

• Combines 32-bit CMOS shift register and latches with bipolar sourcing outputs
• Includes PNP active pull-downs for improved drive performance
• Features controlled output slew rate and high-speed data storage
• Compatible with 5V logic supply interfaces

Applications

• Vacuum-fluorescent display driving
• Peripheral power driver applications
• Dot matrix display systems

Procurement Notes

Verify RoHS compliance status as the EE suffix typically indicates lead-free composition, contrasting with non-compliant variants. Confirm package integrity for the 44-PLCC form factor. Check for obsolescence notices or PCN updates regarding tape changes. Ensure compatibility with existing 3V to 5.5V logic levels in the target design.

Selection Notes

Select this component when a high-voltage, high-current source driver is required for vacuum-fluorescent displays. The integrated PNP pull-downs offer advantages over older discrete solutions. Consider the 44-PLCC package constraints for PCB layout. Verify that the 60V breakdown rating meets the specific load requirements of the application.

Part Context

This part belongs to the A6818 family of DABiC-IV technology drivers. It serves as an improved replacement for legacy parts like SN75518N and UCN5818x. The series focuses on providing robust driving capabilities for high-voltage loads while maintaining low-power CMOS logic compatibility.

Replacement Considerations

Officially documented replacements include SN75518N, SN75518NF, UCN5818x, and UCQ5818x.