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Product Detailed Parameters
- Description：CONSUMER CIRCUIT, PDIP24
- Series：-
- Mfr：National Semiconductor
- Package：Bulk
- Applications：Bias Clamp, CRT Driver
- Output Type：-
- Number of Circuits：3
- Slew Rate：-
- Current - Supply：3.1 mA
- Current - Output / Channel：-
- Voltage - Supply, Single/Dual (±)：-
- Mounting Type：Through Hole
- Package / Case：24-DIP (0.300", 7.62mm)
- Supplier Device Package：24-PDIP
- -3db Bandwidth：-
- Grade：-
- Qualification：-
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Overview
The LM2485NA is a triple bias clamp integrated circuit manufactured by National Semiconductor. It features an integrated G1 blank amplifier and supports high-voltage operation up to 220V. The device provides three independent output channels designed for CRT driver applications, combining bias clamping functionality with signal amplification in a single monolithic package.
Feature Summary
- Integrates a dedicated G1 blank amplifier alongside the primary bias clamping circuitry
- Supports high-voltage operation with a maximum rating of 220V
- Provides three independent output channels within a single monolithic structure
Applications
- CRT driver circuits requiring combined bias clamping and amplification
- Display systems utilizing G1 blanking control mechanisms
- High-voltage analog signal conditioning for cathode ray tube interfaces
Procurement Notes
Verify component authenticity as National Semiconductor was acquired by Texas Instruments. Confirm datasheet revision status to ensure compatibility with current design specifications. Check for equivalent TI part numbers if original sourcing is restricted. Validate manufacturing origin against project requirements.
Selection Notes
Select this component when a monolithic solution for high-voltage CRT biasing and G1 blanking is required. It eliminates the need for discrete clamping diodes and separate amplifier stages. Ensure the 220V voltage rating aligns with the specific display technology constraints.
Part Context
This component belongs to the LM248x series of triple bias clamps from National Semiconductor. It is functionally related to parts like the LM2479 and LM2483 but distinguishes itself through the inclusion of the G1 blank amplifier feature. The series targets specialized display driver applications.
Replacement Considerations
Direct substitutes include other members of the LM248x family such as the LM2483 or LM2481, provided the G1 blank amplifier is not required. Verify pinout compatibility and voltage ratings before substitution.
