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Impossible Design









7474
Dual D-Type Flip Flop Positive-Edge Triggered Flip Flops with Preset and Clear
POSITIVE LOGIC

74LS74 14 Pin DIP ... Only $0.50 USD!
Function Table of the 7474 Dual-Type D Flip Flop

74LS74 picture
7474 Dual D-Type Flip Flop 7400 series logic chip Pinout
7474 DATASHEET


These Integrated Circuits contain two independent D-type positive-edge triggered flip flop circuits. A low level at the preset or clear input pins set or resets the outputs regardless of the levels of the other inputs. When preset and clear are disabled (high logic level), data at the D input meeting the setup time requirements are transferred to the outputs on the positive-going edge of the clock pulse. Following the hold time interval, data at the D input may be changed without affecting the levels at the outputs.









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