IN74HCT74A

TECHNICAL DATA IN74HCT74A Dual D Flip-Flop with Set and Reset High-Performance Silicon-Gate CMOS The IN74HCT74A is identical in pinout to the LS/ALS74. This device may be used as a level converter for interfacing TTL or NMOS outputs to High Speed CMOS inputs. This device consists of two D flip-flops with individual Set, Reset, and Clock inputs. Information at a D-input is transferred to the corresponding Q output on the next positive going edge of the clock input. Both Q and Q outputs are available from each flip-flop. The Set and Reset inputs are asynchronous. TTL/NMOS Compatible Input Levels Outputs Directly Interface to CMOS, NMOS, and TTL Operating Voltage Range: 4.5 to 5.5 V Low Input Current: 1.0 µA ORDERING INFORMATION IN74HCT74AN Plastic IN74HCT74AD SOIC TA = -55° to 125° C for all packages LOGIC DIAGRAM PIN ASSIGNMENT FUNCTION TABLE Inputs Set L H L PIN 14 =VCC PIN 7 = GND H H H H Reset H L L H H H H L H Clock X X X Data X X X H L X X Outputs Q H L H * Q L H H* L H H L w w w .d e e h s a t a . u t4 m o c No Change No Change H H X No Change *Both outputs will remain high as long as Set and Reset are low, but the output states are unpredictable if Set and Reset go high simultaneously. X = don’t care 1 www.DataSheet4U.com IN74HCT74A MAXIMUM RATINGS* Symbol VCC VIN VOUT IIN IOUT ICC PD Tstg TL * Parameter DC Supply Voltage (Referenced to GND) DC Input Voltage (Referenced to GND) DC Output Voltage (Referenced to GND) DC Input Current, per Pin...