These 8-bit universal shift/storage registers feature multiplexed I/O ports to achieve full 8-bit data handling in a single 20-pin package. Two function-select (S0, S1) inputs and two output-enable (OE1\, OE2\) inputs can be used to choose the modes of operation listed in the function table.

Synchronous parallel loading is accomplished by taking both S0 and S1 high. This places the 3-state outputs in a high-impedance state and permits data that is applied on the I/O ports to be clocked into the register. Reading out of the register can be accomplished while the outputs are enabled in any mode. Clearing occurs when the clear (CLR\) input is low. Taking either OE1\ or OE2\ high disables the outputs but has no effect on clearing, shifting, or storage of data.

• Four Modes of Operation:
  • Hold (Store)
  • Shift Right
  • Shift Left
  • Load Data
• Operates With Outputs Enabled or at High Impedance
• 3-State Outputs Drive Bus Lines Directly
• Can Be Cascaded for N-Bit Word Lengths
• Direct Overriding Clear
• Applications:
  • Stacked or Push-Down Registers
  • Buffer Storage
  • Accumulator Registers

• Configuration
• Universal
• Bits (#)
• 8
• Technology Family
• F
• Supply voltage (Min) (V)
• 4.5
• Supply voltage (Max) (V)
• 5.5
• Input type
• Bipolar
• Output type
• 3-State
• Clock Frequency (MHz)
• 70
• IOL (Max) (mA)
• 24
• IOH (Max) (mA)
• -3
• ICC (Max) (uA)
• 95000
• Features
• High speed (tpd 10-50ns)

SN74F299的完整型号有：SN74F299DW、SN74F299DWR、SN74F299N，以下是这些产品的关键参数及官网采购报价：

SN74F299DW，工作温度：0 to 70，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SN74F299DW的批量USD价格：.392（1000+）

SN74F299DWR，工作温度：0 to 70，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SN74F299DWR的批量USD价格：.327（1000+）

SN74F299N，工作温度：0 to 70，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SN74F299N的批量USD价格：.376（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。