U74LCX74

DESCRIPTION 

The U74LCX74 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. 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 on CD and SD makes both Q and Q high 

FEATURES 

* 2.3V-3.6V VCC specifications provided 

* 5V tolerant inputs 

* 7.0 ns tPD max (VCC=3.3V), ICC=10μA (max.) 

* Power down high impedance inputs and outputs 

* ±24mA output drive (VCC=3.0V) 

规格书U74LCX74