The ’HC597 and CD74HCT597 are high-speed silicon gate CMOS devices that are pin compatible with the LSTTL 597 devices. Each device consists of an 8-flip-flop input register and an 8-bit parallel-in/serial-in, serial-out shift register. Each register is controlled by its own clock. A "low" on the parallel load input (PL\) shifts parallel stored data asynchronously into the shift register. A "low" master input (MR\) clears the shift register. Serial input data can also be synchronously shifted through the shift register when PL\ is high.

• Buffered Inputs
• Asynchronous Parallel Load
• Fanout (Over Temperature Range)
  • Standard Outputs...10 LSTTL Loads
  • Bus Driver Outputs...15 LSTTL Loads
• Wide Operating Temperature Range... 55°C to 125°C
• Balanced Propagation Delay and Transition Times
• Significant Power Reduction Compared to LSTTL Logic ICs
• HC Types
  • 2V to 6V Operation
  • High Noise Immunity: NIL = 30%, NIH = 30% of VCC at VCC = 5V
• HCT Types
  • 4.5V to 5.5V Operation
  • Direct LSTTL Input Logic Compatibility, VIL = 0.8V (Max), VIH = 2V (Min)
  • CMOS Input Compatibility, Il ≤ 1A at VOL, VOH

Data sheet acquired from Harris Semiconductor

• Configuration
• Universal
• Bits (#)
• 8
• Technology Family
• HC
• Supply voltage (Min) (V)
• 2
• Supply voltage (Max) (V)
• 6
• Input type
• Standard CMOS
• Output type
• Push-Pull
• Clock Frequency (MHz)
• 24
• IOL (Max) (mA)
• 5.2
• IOH (Max) (mA)
• -5.2
• ICC (Max) (uA)
• 160
• Features
• Balanced outputs, High speed (tpd 10-50ns), Positive input clamp diode

CD74HC597的完整型号有：CD74HC597E、CD74HC597M、CD74HC597M96、CD74HC597MT、CD74HC597NSR，以下是这些产品的关键参数及官网采购报价：

CD74HC597E，工作温度：-55 to 125，封装：PDIP (N)-16，包装数量MPQ：25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CD74HC597E的批量USD价格：.183（1000+）

CD74HC597M，工作温度：-55 to 125，封装：SOIC (D)-16，包装数量MPQ：40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CD74HC597M的批量USD价格：.339（1000+）

CD74HC597M96，工作温度：-55 to 125，封装：SOIC (D)-16，包装数量MPQ：2500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CD74HC597M96的批量USD价格：.126（1000+）

CD74HC597MT，工作温度：-55 to 125，封装：SOIC (D)-16，包装数量MPQ：250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CD74HC597MT的批量USD价格：.339（1000+）

CD74HC597NSR，工作温度：-55 to 125，封装：SO (NS)-16，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CD74HC597NSR的批量USD价格：.151（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。