54HCT74 - Texas Instruments

54HCT74 Dual D-Type Positive-Edge-Triggered Flip-Flips

The ’HCT74 devices 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 positi.

Features

• Operating voltage range of 4.5 V to 5.5 V
• Outputs can drive up to 10 LSTTL loads
• Low power consumption, 40-μA max ICC
• Typical tpd = 17 ns
• ±4-mA output drive at 5 V
• Low input current of 1 μA max
• Inputs are TTL-voltage compatible 2 Description The ’HCT74 devices 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 outp.