HD74LS273RPEL Datasheet PDF - Renesas Electronics

The HD74LS273, positive-edge-triggered flip-flops utilize LS TTL circuitry to implement D-type flip-flop logic with a direct clear input.

●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 output.