HD74LS273FPEL中文资料瑞萨数据手册PDF规格书

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.