HD74LS175P

The purpose of the direct clear input in these flip-flops is to ensure that when the clock input is at either the high or low level, the D input signal has no effect at the outputs. This feature allows for the clearing of the flip-flop outputs when needed, providing a way to reset the state of the flip-flops independently of the clock signal.

Information at the D inputs meeting the setup time requirements is transferred to the Q outputs on the positive-going edge of the clock pulse. When the clock input is at either the high or low level, the D input signal has no effect at the outputs.

The HD74LS174 and HD74LS175 are Hex/Quadruple D-type flip-flops with clear inputs. They utilize TTL circuitry to implement D-type flip-flop logic and have positive-edge triggering. The HD74LS175 features complementary outputs from each flip-flop. Information at the D inputs meeting setup time requirements is transferred to the Q outputs on the positive-going edge of the clock pulse. When the clock input is at either the high or low level, the D input signal has no effect at the outputs.