74AHC574BQ数据手册集成电路（IC）的触发器规格书PDF

描述 Description

The 74AHC574; 74AHCT574 are high-speed Si-gate CMOS devices and are pin compatible with Low Power Schottky TTL (LSTTL). They are specified in compliance with JEDEC standard no. 7A.
The 74AHC574; 74AHCT574 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 (OE) 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 OE is LOW the contents of the 8 flip-flops are available at the outputs. When OE is HIGH, the outputs go to the high-impedance OFF-state. Operation of the OE input does not affect the state of the flip-flops.
The 74AHC574; 74AHCT574 is functionally identical to the 74AHC564; 74AHCT564, but has non-inverting outputs. The 74AHC574; 74AHCT574 is functionally identical to the 74AHC374; 74AHCT374, but has a different pinning.

特性 Features

• Balanced propagation delays
• All inputs have a Schmitt-trigger action
• 3-state non-inverting outputs for bus orientated applications
• 8-bit positive, edge-triggered register
• Independent register and 3-state buffer operation
• Common 3-state output enable input
• For 74AHC574 only: operates with CMOS input levels
• For 74AHCT574 only: operates with TTL input levels
• ESD protection:
• HBM JESD22-A114E exceeds 2000 V
• MM JESD22-A115-A exceeds 200 V
• CDM JESD22-C101C exceeds 1000 V

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