CD74HCT165 - 高速 CMOS 逻辑 8 位并行输入/串行输出移位寄存器

CD74HCT165是TI德州仪器公司的一款移位寄存器产品，CD74HCT165是高速 CMOS 逻辑 8 位并行输入/串行输出移位寄存器，本站介绍了CD74HCT165的封装应用图解、特点和优点、功能等，并给出了与CD74HCT165相关的TI元器件型号供参考。

CD74HCT165 - 高速 CMOS 逻辑 8 位并行输入/串行输出移位寄存器 - 移位寄存器 - 触发器/锁存器/寄存器 - 德州仪器

产品描述

The ’HC165 and ’HCT165 are 8-bit parallel or serial-in shift registers with complementary serial outputs (Q7 and Q\7) available from the last stage. When the parallel load (PL\) input is LOW, parallel data from the D0 to D7 inputs are loaded into the register asynchronously. When the PL\ is HIGH, data enters the register serially at the DS input and shifts one place to the right (Q0 → Q1 → Q2, etc.) with each positive-going clock transition. This feature allow parallel-to-serial converter expansion by typing the Q7 output to the DS input of the succeeding device.

For predictable operation the LOW-to-HIGH transition of CE\ should only take place while CP is HIGH. Also, CP and CE\ should be LOW before the LOW-to-HIGH transition of PL to prevent shifting the data when PL\ goes HIGH.

产品特性

Buffered Inputs
Asynchronous Parallel Load
Complementary Outputs
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 1µA at VOL, VOH

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