74AC74

74AC74, 74ACT74 — Dual D-Type Positive Edge-Triggered Flip-Flop January 2008 74AC74, 74ACT74 Dual D-Type Positive Edge-Triggered Flip-Flop Features ■ ICC reduced by 50% ■ Output source/sink 24mA ■ ACT74 has TTL-compatible inputs General Description The AC/ACT74 is a dual D-type flip-flop with Asynchronous Clear and Set inputs and complementary (Q, Q) outputs. Information at the input is transferred to the outputs on the positive edge of the clock pulse. Clock triggering occurs at a voltage level of the clock pulse and is not directly related to the transition time of the positivegoing pulse. After the Clock Pulse input threshold voltage has been passed, the Data input is locked out and information present will not be transferred to the outputs until the next rising edge of the Clock Pulse input. Asynchronous Inputs: ■ LOW input to SD (Set) sets Q to HIGH level ■ LOW input to CD (Clear) sets Q to LOW level ■ Clear and Set are independent of clock ■ Simultaneous LOW o...