SN7447N is a 16-pin DIP (dual in-line package) TTL (transistor-transistor logic) integrated circuit (IC) manufactured by Texas Instruments (TI). It is a BCD-to-7-segment latch/decoder/driver, which can be used to drive a 7-segment display. Description: The SN7447N is a BCD-to-7-segment latch/decoder/driver that can be used to drive a 7-segment display. It has four BCD inputs (A, B, C, and D) and seven output lines (a–g) that can be used to drive a 7-segment display