The 74HC574; 74HCT574 is a high-speed Si-gate CMOS device and is pin compatible with Low-power Schottky TTL. It is specified in compliance with JEDEC standard no. 7A. The 74HC574; 74HCT574 are octal D-type flip-flops featuring separate D-type inputs for each flip-flop and 3-state outputs for bus-oriented applications. A clock (CP) and an output enable input are common to all flip-flops. The 8 flip-flops will store the state of their individual D-inputs that meet the set-up and hold times requirements on the LOW-to-HIGH CP transition. When output enable is LOW the contents of the 8 flip-flops are available at the outputs. When output enable is HIGH, the outputs go to the high-impedance OFF-state. Operation of the output enable input does not affect the state of the flip-flops.
3-state non-inverting outputs for bus oriented applications
8-bit positive, edge-triggered register
Common 3-state output enable input
HBM JESD22-A114F exceeds 2 000 V
MM JESD22-A115-A exceeds 200 V
Specified from -40 °C to +85 °C and from -40 °C to +125 °C