74HC76

The IC 7476 is a 16-pin integrated circuit containing two independent J-K master-slave flip-flops. Its primary function is to act as a 1-bit memory storage device, making it a fundamental building block for digital circuits like shift registers, counters, and frequency dividers.

Core Functionality
Each flip-flop features J and K inputs, a clock pulse, and asynchronous Preset and Clear overrides.
Memory/Hold (J=0, K=0): Retains the previous output state.
Reset (J=0, K=1): Forces output Q to LOW (0).
Set (J=1, K=0): Forces output Q to HIGH (1).
Toggle (J=1, K=1): Reverses the current output state.
Preset & Clear: Overrides the clock and inputs. Activating Preset forces Q HIGH; activating Clear forces Q LOW.
Depending on the specific manufacturer’s datasheet, the J-K inputs are captured on the clock’s leading edge, and data transfers to the output on the clock’s falling edge (HIGH-to-LOW transition).

Common Applications
Frequency Division: Dividing clock signals (e.g., using a toggle state to divide a frequency exactly in half).
Counters: Building binary and decade counters for digital clocks or timers.
Shift Registers: Serial data storage and movement

Packages: Available in DIP-14, SOIC-14, SSOP-14, and TSSOP-14