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UNISONIC TECHNOLOGIES CO., LTD U74AHC574
OCTAL EDGE-TRIGGERED
D-TYPE FLIP-FLOPS WITH
3-STATE OUTPUTS
DESCRIPTION
The U74AHC574 is a octal edge-triggered D-type flip-flops with 3-state outputs, and it has 8 channels.
When the OE input is low, on the positive transition of the clock (CLK) input, the Q outputs are set to the logic levels of the data (D) inputs.
When the OE input is high, the outputs are in the high-impedance.
To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pull-up resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
FEATURES
* Operate from 2V to 5.5V * Max tpd of 13.2 ns at at VCC=3.3V, CL=15pF * Max ICC of 4uA * Typical VOL< 0.36V at VCC=4.