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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：-20°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 A6818SEPTR-T 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 in a 44-PLCC package. The device supports a supply voltage range of 3V to 5.5V and handles load voltages up to 60V. Each output provides a maximum current of 40mA. It features controlled output slew rates and high-speed data storage capabilities.
Feature Summary
- Integrates 32-bit CMOS shift register with accompanying data latches and control circuitry
- Features bipolar sourcing outputs combined with PNP active pull-downs for efficient drive capability
- Includes controlled output slew rate management to reduce electromagnetic interference
- Supports low-power CMOS logic operation compatible with standard logic supplies
Applications
- Driving vacuum-fluorescent displays
- Peripheral power driver applications requiring high-voltage handling
- Dot matrix display systems
Procurement Notes
Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific suffix indicates tape and reel packaging. Check for RoHS compliance status as documentation varies between versions. Ensure the part number matches the exact 44-pin PLCC configuration required for your PCB layout.
Selection Notes
Select this component when a 32-channel high-side driver with integrated latching is required. It is suitable for designs needing 60V breakdown voltage and 40mA per channel. Consider the serial interface requirements and the 44-PLCC footprint during schematic capture. Evaluate thermal performance based on the total number of active outputs in the application.
Part Context
This device belongs to the DABiC-IV family of drivers from Allegro MicroSystems. It serves as an improved replacement for legacy parts such as the SN75518N and UCN5818x series. The technology combines CMOS control logic with bipolar output stages to optimize performance and power efficiency in display driving scenarios.
Replacement Considerations
Officially documented replacements include SN75518N, SN75518NF, UCN5818x, and UCQ5818x. Verify pin compatibility and electrical specifications before substituting these older components.
