The 4543 is a CMOS BCD-to-7-segment latch/decoder/driver IC designed for driving 7-segment displays. It accepts 4-bit BCD inputs, latches data, and outputs signals for common-cathode displays. Operating at 3V–18V, it features high noise immunity, a blanking input for display control, and a latch enable for data retention. Ideal for digital clocks, counters, and meters.
| Input | 4-bit BCD |
|---|---|
| Supply Voltage | 3V to 18V |
| Output | 7-segment (common-cathode compatible) |
| Features | Latch Enable, Blanking Input |
| Inputs | BCD (A-D), LE, BI |
| Outputs | 7 (a-g segments) |
