General description
The 74HC574; 74HCT574 is an 8-bit positive-edge triggered D-type flip-flop with 3-state
outputs. The device features a clock (CP) and output enable (OE) inputs. The flip-flops will
store the state of their individual D-inputs that meet the set-up and hold time requirements
on the LOW-to-HIGH clock (CP) transition. A HIGH on OE causes the outputs to assume
a high-impedance OFF-state. Operation of the OE input does not affect the state of the
flip-flops. Inputs include clamp diodes. This enables the use of current limiting resistors to
interface inputs to voltages in excess of VCC.
2. Features and benefits
? Input levels:
? For 74HC574: CMOS level
? For 74HCT574: TTL level
? 3-state non-inverting outputs for bus oriented applications
? 8-bit positive, edge-triggered register
? Common 3-state output enable input
? Complies with JEDEC standard no. 7 A
? Multiple package options
? ESD protection:
? 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