These monolithic, positive-edge-triggered flip-flops utilize
TTL circuitry to implement D-type flip-flop logic with a direct clear input. Information at the D inputs meeting the setup requirements is transferred to the Q outputs on the positive-going edge of the clock pulse. Clock triggering occurs at a particular voltage level and is not directly related to the transition time of the positive-going pulse. When the clock input is at either the high or low level, the D input signal has no effect at the output.
Switching specifications at 50 pF
Switching specifications guaranteed over full temperature and VCC range
Buffer-type outputs and improved AC offer significant advantage over 'LS273
Advanced oxide-isolated, ion-implanted Schottky TTL process
Functionally and pin-for-pin compatible with 'LS273
20 pin DIP. Actual brand may vary from picture.