The SNJ5491AJ is an integrated circuit (IC) component manufactured by Texas Instruments. It is a BCD-to-7-segment latch/decoder/driver IC, commonly used in digital display applications. This IC serves as a multipurpose interface between binary-coded decimal (BCD) data and a 7-segment LED display.
Key Features:
1. 4-bit BCD Input: The SNJ5491AJ accepts a 4-bit BCD input, allowing it to encode and drive up to 16 different decimal numbers (0-9 and six additional characters).
2. Latch Functionality: It includes a built-in latch that facilitates the storage and display of the BCD data. The latch ensures that the current value is maintained even when the input changes.
3. 7-Segment Decoder and Driver: The IC possesses a built-in 7-segment decoder, which accurately decodes the BCD inputs into signals that can drive a 7-segment LED display. It simplifies the design of driving a 7-segment display, eliminating the need for complex external circuitry.
4. Open-Collector Outputs: The SNJ5491AJ's outputs are open-collector, which means they require an external resistor to function correctly. This design allows flexibility in choosing the voltage levels and current limitations based on the specific requirements of the target LED display
