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Product Detailed Parameters
- Description：IC PWR DRVR BIPOLAR 1:32 44PLCC
- Series：-
- Mfr：Allegro MicroSystems
- Package：Tube
- 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 A6818EEP 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-PLCC package (16.59x16.59 mm) and supports a supply voltage range of 3V to 5.5V. Key electrical parameters include a maximum load voltage of 60V, a maximum output current of 40mA, and an operating temperature range of -40°C to 85°C. It utilizes parallel and serial interfaces for control.
Feature Summary
- Integrates 32-bit CMOS shift register and data latches with bipolar sourcing outputs
- Features PNP active pull-downs for improved performance
- Designed primarily for driving vacuum-fluorescent displays
- Supports high-speed data storage and increased data-input rates
Applications
- Vacuum-fluorescent display drivers
- Peripheral power driver applications
- Dot matrix display systems
Procurement Notes
Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status as the standard A6818EEP may not be compliant, while specific suffixes like T indicate lead-free versions. Check for end-of-life status and ensure replacement parts are qualified for your specific application requirements before procurement.
Selection Notes
Select this component when a 32-channel high-voltage source driver is required for vacuum-fluorescent displays. Ensure the system design accommodates the 44-PLCC surface mount package dimensions. Verify that the logic supply voltage falls within the 3V to 5.5V range and that the interface timing meets the high-speed data-input rate specifications provided in the datasheet.
Part Context
The A6818 belongs to Allegro's DABiC-IV technology family, designed for robust power driver applications. It serves as an improved replacement for legacy components such as SN75518N, SN75518NF, UCN5818x, and UCQ5818x. The device combines low-power CMOS logic with bipolar outputs to deliver reliable performance in demanding environments.
Replacement Considerations
Public confirmed substitutes include SN75518N, SN75518NF, UCN5818x, and UCQ5818x. Verify pin compatibility and electrical ratings before substitution.
FAQ
What is the primary intended application for the A6818EEP?
The A6818EEP is designed primarily to drive vacuum-fluorescent displays.
Does the A6818EEP include active pull-downs?
Yes, the device features PNP active pull-downs to improve output performance.
