74HCT574DB数据手册集成电路（IC）的触发器规格书PDF

描述 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.

特性 Features

• 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 2000 V
• MM JESD22-A115-A exceeds 200 V

• Specified from -40 °C to +85 °C and from -40 °C to +125 °C