74LS74 - Motorola

74LS74 DUAL D-TYPE POSITIVE EDGE-TRIGGERED FLIP-FLOP

SN54/74LS74A DUAL D-TYPE POSITIVE EDGE-TRIGGERED FLIP-FLOP The SN54 / 74LS74A dual edge-triggered flip-flop utilizes Schottky TTL circuitry to produce high speed D-type flip-flops. Each flip-flop has individual clear and set inputs, and also complementary Q and Q outputs. Information at input D is transferred to the Q output on the positive-going edge of the.

Features

(Set) Load “0” (Reset) L H L H H SD H L L H H D X X X h l Q H L H H L Q L H H L H OUTPUTS SN54LSXXJ SN74LSXXN SN74LSXXD Ceramic Plastic SOIC LOGIC SYMBOL 4 2 3 D SD Q CP CD Q 1 VCC = PIN 14 GND = PIN 7 6 5 12 11 10 D SD Q CP CD Q 13 8 9
* Both outputs will be HIGH while both SD and CD are LOW, but the output states are unpredictable if SD and CD go HIGH simultaneously. If the levels at the set and clear are near VIL maximum then we cannot guarantee to meet the minimum level for VOH. H, h = HIGH Voltage Level L, I = LOW Voltage Level X = Don’t Care i, h (q) = Lower case letters indicate the .