These 8-bit flip-flops feature 3-state outputs designed specifically for driving highly capacitive or relatively low-impedance loads. The devices are particularly suitable for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers.

The eight flip-flops of the ’ACT574 devices are D-type edge-triggered flip-flops. On the positive transition of the clock (CLK) input, the Q outputs are set to the logic levels set up at the data (D) inputs.

A buffered output-enable (OE)\ input can be used to place the eight outputs in either a normal logic state (high or low logic levels) or the high-impedance state. In the high-impedance state, the outputs neither load nor drive the bus lines significantly. The high-impedance state and the increased drive provide the capability to drive bus lines in a bus-organized system without need for interface or pullup components.

OE\ does not affect internal operations of the flip-flop. Old data can be retained or new data can be entered while the outputs are in the high-impedance state.

To ensure the high-impedance state during power up or power down, OE\ should be tied to V_CC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.

• 4.5-V to 5.5-V VCC Operation
• Inputs Accept Voltages to 5.5 V
• Max tpd of 9 ns at 5 V
• Inputs Are TTL-Voltage Compatible

• Number of channels (#)
• 8
• Technology Family
• ACT
• Supply voltage (Min) (V)
• 4.5
• Supply voltage (Max) (V)
• 5.5
• Input type
• TTL-Compatible CMOS
• Output type
• 3-State
• Clock Frequency (Max) (MHz)
• 90
• IOL (Max) (mA)
• 24
• IOH (Max) (mA)
• -24
• ICC (Max) (uA)
• 40
• Features
• Balanced outputs, Very high speed (tpd 5-10ns), Positive input clamp diode

SN74ACT574的完整型号有：SN74ACT574DBR、SN74ACT574DW、SN74ACT574DWR、SN74ACT574N、SN74ACT574NSR、SN74ACT574PW、SN74ACT574PWR，以下是这些产品的关键参数及官网采购报价：

SN74ACT574DBR，工作温度：-40 to 85，封装：SSOP (DB)-20，包装数量MPQ：2000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网SN74ACT574DBR的批量USD价格：.349（1000+）

SN74ACT574DW，工作温度：-40 to 85，封装：SOIC (DW)-20，包装数量MPQ：25个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网SN74ACT574DW的批量USD价格：.378（1000+）

SN74ACT574DWR，工作温度：-40 to 85，封装：SOIC (DW)-20，包装数量MPQ：2000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网SN74ACT574DWR的批量USD价格：.32（1000+）

SN74ACT574N，工作温度：-40 to 85，封装：PDIP (N)-20，包装数量MPQ：20个，MSL 等级/回流焊峰值温度：N/A for Pkg Type，引脚镀层/焊球材料：NIPDAU，TI官网SN74ACT574N的批量USD价格：.364（1000+）

SN74ACT574NSR，工作温度：-40 to 85，封装：SO (NS)-20，包装数量MPQ：2000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网SN74ACT574NSR的批量USD价格：.349（1000+）

SN74ACT574PW，工作温度：-40 to 85，封装：TSSOP (PW)-20，包装数量MPQ：70个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网SN74ACT574PW的批量USD价格：.378（1000+）

SN74ACT574PWR，工作温度：-40 to 85，封装：TSSOP (PW)-20，包装数量MPQ：2000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网SN74ACT574PWR的批量USD价格：.32（1000+）

14-24-LOGIC-EVM 支持 14 到 24 引脚 PW、DB、D、DW、NS、DYY 和 DGV 封装的通用逻辑 EVM

该 EVM 设计用于支持采用 14 至 24 引脚 D、DW、DB、NS、PW、DYY 或 DGV 封装的任何逻辑器件。