The RCA-CD54/74AC564 and CD54/74AC574 and the CD54/74ACT564 and CD54/74ACT574 octal D-type, 3-state, positive-edge-triggered flip-flops use the RCA ADVANCED CMOS technology. The eight flip-flops enter data into their registers on the LOW-to-HIGH transition of the clock (CP). The Output Enable (OE\) controls the 3-state outputs and is independent of the register operation. When the Output Enable (OE\) is HIGH, the outpus are in the high-impendance state. The CD54/74AC/ACT564 and CD54/74AC/ACT574 share the same pin configurations; the CD54/74AC/ACT564, however, has inverted outputs and the CD54/74AC/ACT574 has non-inverted outputs.

The CD74AC/ACT564 and CD74AC/ACT574 are supplied in 20-lead dual-in-line plastic packages (E suffix) and in 20-lead dual-in-line small-outline plastic pakcages (M suffix). Both package types are operable over the following temperature range: Commercial (0- to 70°C); Industrial (-40 to +85°C); and Extended Industrial/Military (-55 to +125°C).

The CD54AC/ACT564 and CD54AC/ACT574, available in chip form (H suffix), are operable over the -55 to +125°C temperature range.

• Buffered inputs
• Typical propagation delay: 6.5 ns @ VCC = 5 V, TA = 25°C, CL = 50 pF
• Exceeds 2-kV ESD Protection - MIL-STD-883, Method 3015
• SCR-Latchup-resistant CMOS process and circuit design
• Speed of bipolar FAST*/AS/S with significantly reduced power consumption
• Balanced propagation delays
• AC types feature 1.5-V to 5.5-V operation and balanced noise immunity at 30% of the supply
• ±24-mA output drive current -Fanout to 15 FAST* ICs -Drives 50-ohm transmission lines
• Characterized for operation from 40° to 85°C

*FAST is a Registered Trademark of Fairchild Semiconductor Corp.

• 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)
• 125
• IOL (Max) (mA)
• 24
• IOH (Max) (mA)
• -24
• ICC (Max) (uA)
• 80
• Features
• Balanced outputs, Very high speed (tpd 5-10ns), Positive input clamp diode

CD74ACT574的完整型号有：CD74ACT574E、CD74ACT574M、CD74ACT574M96，以下是这些产品的关键参数及官网采购报价：

CD74ACT574E，工作温度：-55 to 125，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CD74ACT574E的批量USD价格：0.409（1000+）

CD74ACT574M，工作温度：-55 to 125，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CD74ACT574M的批量USD价格：0.455（1000+）

CD74ACT574M96，工作温度：-55 to 125，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CD74ACT574M96的批量USD价格：0.394（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。