SN75491AN MC75491 QUAD Segment Driver
Description
SN75491AN MC75491 Quad Segment Driver
Classic quad LED segment driver for retro electronics and repairs. The SN75491 from Texas Instruments is a proven monolithic integrated circuit (IC) designed specifically to interface between logic circuits (e.g., MOS logic) and common-cathode LED displays. The IC contains four independent Darlington driver stages, enabling high gain while minimizing input currents. Whether for the authentic restoration of vintage calculators, pinball machines, or test equipment, or for your own retro projects, this classic component in a DIP-14 package delivers reliable performance for multiplexed displays.
Classic quad LED segment driver for retro electronics and repairs. The SN75491 from Texas Instruments is a proven monolithic integrated circuit (IC) designed specifically to interface between logic circuits (e.g., MOS logic) and common-cathode LED displays. The IC contains four independent Darlington driver stages, enabling high gain while minimizing input currents. Whether for the authentic restoration of vintage calculators, pinball machines, or test equipment, or for your own retro projects, this classic component in a DIP-14 package delivers reliable performance for multiplexed displays.
Key Features
- Quad driver: Contains 4 separate channels for directly driving LED segments.
- Darlington configuration: High current gain with minimal input current.
- Integrated pull-down resistors: Allows direct connection to MOS outputs without additional external components.
- Optimized for multiplex operation: Perfectly matched for use with digit drivers such as the SN75492.
Technical Specifications
- Manufacturer: Texas Instruments
- Type: Interface IC / Segment Driver (LED)
- Package type: DIP14 / DIL14
- Mounting type: THT (Through-Hole)
- Number of channels: 4 independent driver stages
- Output configuration: Darlington transistor array
- Display type: Common-cathode LED displays
- Max. operating voltage: 20 V
- Collector output current: Up to 50 mA per segment
- Input resistance (typical): 2.2 k?
- Operating temperature range: 0°C to +70°C
