Description:

The ’HC74 contain two independent D-type

positive-edge-triggered flip-flops. A low level at

the preset (PRE) or clear (CLR) inputs sets or

resets the outputs regardless of the levels of the

other inputs. When PRE and CLR are inactive

(high), data at the data (D) input meeting the setup

time requirements are transferred to the outputs

on the positive-going edge of the clock (CLK)

pulse. Clock triggering occurs at a voltage level

and is not directly related to the rise time of CLK.

Following the hold-time interval, data at the

D input can be changed without affecting the

levels at the outputs.

The SN54HC74 is characterized for operation

over the full military temperature range –55°C to

125°C. The SN74HC74 is characterized for

operation from –40°C to 85°C. 

Kit include:

1 X SN74HC74N DIP Flip Flop gate

Documents:

74HC74.pdf