Description
74LS377 Flip Flop 1 Element D-Type 8 Bit Positive Edge
General Description
These monolithic, positive-edge-triggered flip-flops utilize TTL circuitry to implement O-type flip-flop logic with an enable input. The ‘LS377, ‘LS378, and ‘LS379 devices are similar to ‘LS273, ‘LS174, and
‘LS175, respectively, but feature a common enable instead of a common clear. Information at the O inputs meeting the setup time requirements is transferred to the O outputs on the positive-going edge of the clock pulse if the enable input G is low. Clock triggering occurs at a particular voltage level and is not directly related to the transition time of the positive-going pulse. When the clock input is at either the high or low level, the D input signal has no effect at the output. The circuits are designed to prevent false clocking by transitions at the G input. These flip-flops are guaranteed to respond to clock
frequencies ranging from O to 30 MHz while maximum clock frequency is typically 40 megahertz. Typical power dissipation is 10 milliwatts per flip-flop.
Features
• ‘LS377 and ‘LS378 Contain Eight and Six Flip-Flops, Respectively, with Single Rail Outputs
• ‘LS379 Contains Four Flip-Flops with Double-Rail Outputs
• Individual Data Input to Each Flip-Flop
• Applications Include:
description
Buffer /Storage Registers
Shift Registers
Pattern Generators
