SN54HC195是TI公司的一款移位寄存器产品，SN54HC195是4 位并行访问移位寄存器，本页介绍了SN54HC195的产品说明、应用、特性等，并给出了与SN54HC195相关的TI元器件型号供参考。
SN54HC195 - 4 位并行访问移位寄存器 - 移位寄存器 - 触发器/锁存器/寄存器 - TI公司（Texas Instruments，德州仪器）
These 4-bit registers feature parallel inputs, parallel outputs, J-K serial inputs, shift/load control input, and a direct overriding clear. The registers have two modes of operation: parallel (broadside) load, and shift (in the direction QA and QD).
Parallel loading is accomplished by applying the 4-bits of data and taking the shift/load control input low. The data is loaded into the associated flip-flop and appears at the outputs after the positive transition of the clock input. During loading, serial data flow is inhibited.
Shifting is accomplished synchronously when the shift/load control input is high. Serial data for this mode is entered at the J-K inputs. These inputs permit the first stage to perform as a J-K, D, or T type flip-flop as shown in the function table.
The SN54HC195 is characterized for operation over the full military temperature range of –55°C to 125°C.
- Synchronous Parallel Load
- Positive-Edge-Triggered Clocking
- J and K Inputs to First Stage
- Complementary Outputs From Last Stage
- Package Options: Plastic and Ceramic DIPS and Ceramic Chip Carriers
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