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Product Detailed Parameters
- Description：IC PWR DRVR BIPOLAR 1:32 44PLCC
- Series：-
- Mfr：Allegro MicroSystems
- Package：Tape & Reel (TR)
- Switch Type：Latched Driver
- Number of Outputs：32
- Ratio - Input:Output：1:32
- Output Configuration：High Side
- Output Type：Bipolar
- Interface：Strobe, Serial
- Voltage - Load：60V (Max)
- Voltage - Supply (Vcc/Vdd)：3V ~ 5.5V
- Current - Output (Max)：40mA
- Rds On (Typ)：-
- Input Type：Non-Inverting
- Features：-
- Fault Protection：-
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Supplier Device Package：44-PLCC (16.59x16.59)
- Package / Case：44-LCC (J-Lead)
- Grade：-
- Qualification：-
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Overview
The A6818EEPTR is a 32-bit serial input latched source driver manufactured by Allegro MicroSystems. It integrates a CMOS shift register, data latches, and bipolar sourcing outputs with PNP active pull-downs. The device features a 44-pin PLCC package (16.59 x 16.59 mm) and operates within a supply voltage range of 3V to 5.5V. It supports a minimum output breakdown voltage of 60V and provides up to -40mA output current per channel. The component functions across an extended temperature range from -40°C to +85°C.
Feature Summary
- Combines high-speed 32-bit serial data storage with accompanying latches for efficient control
- Features controlled output slew rates and low output-saturation voltages for precise drive characteristics
- Integrates PNP active pull-downs alongside bipolar sourcing outputs for robust load handling
Applications
- Driving vacuum-fluorescent displays
- Peripheral power driver applications requiring high voltage tolerance
- Dot matrix display systems
Procurement Notes
Verify the specific suffix 'EEP' against official Allegro documentation to confirm lead-free compliance status, as datasheets may list variations such as 'SEPTR' or 'KEPTR'. Ensure the 44-PLCC package dimensions match the target PCB footprint. Confirm RoHS3 certification requirements align with the specific manufacturing batch data provided by the supplier.
Selection Notes
Select this component when a 32-channel high-voltage source driver with serial interface is required. It serves as an improved replacement for legacy parts like SN75518N and UCN5818x. Consider its 60V breakdown rating and -40mA output capability for driving inductive or capacitive loads in automotive or industrial environments where space efficiency is critical.
Part Context
The A6818 belongs to Allegro's DABiC-IV technology family, designed for high-performance peripheral drivers. This series emphasizes low-power CMOS logic combined with bipolar output stages. The device is part of a broader portfolio of display and power drivers intended for demanding electronic applications requiring reliable signal latching and high-voltage isolation.
Replacement Considerations
Officially documented direct replacements include SN75518N, SN75518NF, UCN5818x, and UCQ5818x. Verify pin compatibility and electrical parameters before substituting these legacy components.
