The HC174 and HCT174 are edge triggered flip-flops which utilize silicon gate CMOS circuitry to implement D-type flip-flops. They possess low power and speeds comparable to low power Schottky TTL circuits. The devices contain six master-slave flip-flops with a common clock and common reset. Data on the D input having the specified setup and hold times is transferred to the Q output on the low to high transition of the CLOCK input. The MR\ input, when low, sets all outputs to a low state.
●Each output can drive ten low power Schottky TTL equivalent loads. The HCT174 is functional as well as, pin compatible to the LS174.
● Buffered Positive Edge Triggered Clock
● Asynchronous Common Reset
● Fanout (Over Temperature Range)
● Standard Outputs. . . . . . . . . . . . . . . 10 LSTTL Loads
● Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads
● Wide Operating Temperature Range . . . -55°C to 125°C
● Balanced Propagation Delay and Transition Times
● Significant Power Reduction Compared to LSTTL Logic ICs
● HC Types
● 2V to 6V Operation
● High Noise Immunity: NIL = 30%, NIH = 30% of VCC at VCC = 5V
● HCT Types
● 4.5V to 5.5V Operation
● Direct LSTTL Input Logic Compatibility, VIL = 0.8V (Max), VIH = 2V (Min)
● CMOS Input Compatibility, Il 1µA at VOL, VOH
